twin disscussion

[freakboy]

Well this is for all those guys who like the twins!!heheeh :D

Opposed,inline,v etc.

Share your tips and tricks here.
Modifications to yours.
what type is yours.
This general stuff.

I thought it would be nice to have a place to talk about them.

[jr dragster Tyler]

Arctic Cat Sno Pro 440 twin:)

Inline twin.

V-Force 3 reeds:)

[freakboy]

How high does that baby rev? what kinda power you looking at with it?

[BriggsTwins]

Yay twin thread!!!!!!

[freakboy]

Well we can tell someones exited about it lol.

[BriggsTwins]

nah just spent an hour with my best friend and couldnt be happier, and the thread is nice too!

[freakboy]

lol thats awsome Is it a girl???? hehehe

So ummm lets not talk about those "twins" and get onto engine topics what kinda twin you got cubic inches? factory sticker hp? any special things bout it which orentation and what its going on.

[anderkart]

Well this is for all those guys who like the twins!!heheeh :D




Mmmm... twins :drool5:

[BriggsTwins]

yes a girl and......(distracted)

18 horse twin revived from lt18 lawn tractor
runs 690cc or 42 cubic inches with a 9 amp alternator
repainted and runs really good!
http://www.youtube.com/watch?v=X4gER3ZOeIM


here is a video of it running. still needs a dipstick assembly fuel pump, and an air filter.....and then just need a kart frame to put it on

[Rotore]

725cc 25hp Kohler Commando, full pressure lub w/ oil cooler, electric start, diaphram carb and pump and dual PTO w/ a beefy as$ flywheel.

[BriggsTwins]

i love that chopper vid, these kohlers have a big cam

[Rotore]

i love that chopper vid, these kohlers have a big cam

yea the quad lobe cam is huge compare to some of the cams seen in these small engines

[jr dragster Tyler]

Mmmm... twins :drool5:

DISTRACTION AHEM...My twin is a 440 cc liquid cooled inline 2 pumping out around 130 HP at around 10,000 RPM. All modifications internally are unknown till I completely disassemble the engine. I know for sure it was V Force 3 reeds though.

[modelengineer]

Niiiiiiice. 2-strokes are insane.

Mine is a 487cc (nearly 30 cu in) inline twin.
4 stroke
Air and oil cooled
9.0:1 compression ratio
47hp stock
11,000 rpm redline because of valve float
Custom adjustable on-the-fly rev limiter 0 - 11,000 rpm
Twin 34mm Mikuni carbs
6" Autometer monster tacho
Performance stainless steel exhaust (loud! See pic)
Rejetted from 17.5-60-130 to 20-60-145
Larger than stock oil cooler
Soon to have uni filter pods
6 spd sequential gearbox
Wet multi plate clutch

Best pic I have of the engine:

http://i231.photobucket.com/albums/ee224/jones_pbkt/9809.jpg

[BriggsTwins]

nice, all of u guys are running like 6K and above, i top out at 3700

[freakboy]

Hahaha im runnin 6k

[Rotore]

i'll see how far i can push the kohler rpm wise.

[BriggsTwins]

nice

[BriggsTwins]

i dont wanna push mine, i get the feeling it would toss a rod before it floats a valve

[freakboy]

Is urs a splash lubed? and what orrentation?

[BriggsTwins]

splash horiz, you missed the video? :D

[Rotore]

full pressure lub

[BriggsTwins]

dont rub it in

[Rotore]

found specs on my kohler:

Engine
Cylinders V-Twin
Cooling Air
Engine 4-cycle, gasoline, OHV, cast iron cylinder liner, aluminum block
Rated Horsepower 25 hp (18.64 kW) @ 3600 RPM
Displacement 44.0 cu. in. (725 cc)
Bore x Stroke 3.27 in. (83 mm) x 2.64 in. (67 mm)
Torque 39.9 ft (54.1 Nm) @ 2800
Compression Ratio 9.0:1
Oil Capacity 2.0 quarts (1.9 l)
Lubrication Full pressure w/full-flow filter


Dimensions
Weight 94 lbs (43 kg)
Dimensions (LxWxH) 13.8" x 17.7" x 19.0"

[freakboy]

Haha i got full pressure lubed too. and yeah firefox blocks vids sometimes all that comes up is a link.

[BriggsTwins]

ah ok, i wish i had a v twin
check this thing out http://www.youtube.com/watch?v=K-WFF8C7qvc

[BriggsTwins]

one hell of a lope on that cam

[Rotore]

either that or he gave it a smaller valve gap lol.

[BriggsTwins]

sure did something, thats why i want a vtwin

[crazycart]

That's just a stock engine.... seen these with 70+ hp

[BriggsTwins]

That golf cart one has a cam in it, costs like 200 for it

[Rotore]

yea there are lots of parts for our engines, i saw a guy on heymow making 50hp of his kohler which was 27hp stock.

[freakboy]

Dude they make more sometimes man you can get like 70 hp out of these things if you do it right.

[Rotore]

yea i wonder if one of us did a turbo setup with a kp31 like lemgacool has on is honda lol i think we'd need a blow off valve :p

[freakboy]

lol mabey

[Rotore]

hell yea

[freakboy]

try it out man! you got a engine fix the rod and turbo the ****er.

[BriggsTwins]

i want to run 2 carbs on the twin, it probably wouldnt matter, but i think it would be cool

[freakboy]

they run good with dual carbs just make 2 eaqual length intake manifolds for it. about 4 inches long each.

[Rotore]

i want to run 2 carbs on the twin, it probably wouldnt matter, but i think it would be cool

actually it would dude more response!!! A mikuni on each cyl. :devil2:


well i took the base plate off the kohler and thought of hunting down the last owner :censored:. one connecting rod was totally crushed into little pieces and other was pretty bent, camshaft was broken in half, pistons were chipped, exhaust valve was chipped and a small piece on the very bottom of the cylinder wall was chipped. i'm see if i can still use the block since my old shop teacher lives near by to get his opinion on the cylinders (piston rings get no where near the damaged are but just to be safe)

So if that doesnt work out i'll take a trip to the junk yard and get a 18hp Kohler opposed.

[freakboy]

You can definitly use the block as long as the bore aint scored like hell. is the crank good?

[Rotore]

no the bore is perfect dude and i havent had enough time to inspect the crank but will do on thursday plus i found where most of the weight was coming from lol that steel flywheel is about 24lbs.

but i'll have to order pistons, connecting rods, piston rings, a new camshaft, exhaust valve and a gasket set which would be about $280 estimate

[freakboy]

OUCH! i would look at the local junk yard for a complete engine and then get the junk yard engine to run.

[Rotore]

lol i can get the parts for free from my old shop teacher or take this time to build it up with aftermarket parts

[Kaptain Krunch]

For $280 u could buy a motorcycle engine. And trust me, it IS worth it.

[freakboy]

remember if its free its for me!

[BriggsTwins]

yea really, i got mine out of a burned tractor for 40 delivered, unless you really want that sucker to run with some aftermarket parts.

[Rotore]

oh yea it's worth it when you see the power that can be made from this engine and besides im getting the parts for free from my old shop teacher i just got his call so YEAH!!!!!!!!!

and bad news i will end up building a rail instead of a reverse trike bmikarts doesnt have my parts in stock so cancelling that order.

[modelengineer]

A mikuni on each cyl

Like a set of these...?

http://i231.photobucket.com/albums/ee224/jones_pbkt/Sidewinder/Carburetors2.jpg

http://i231.photobucket.com/albums/ee224/jones_pbkt/Sidewinder/Carburetors3.jpg

:roflol: they're epic

[freakboy]

what parts you need?

[Rotore]

Like a set of these...?

http://i231.photobucket.com/albums/ee224/jones_pbkt/Sidewinder/Carburetors2.jpg

http://i231.photobucket.com/albums/ee224/jones_pbkt/Sidewinder/Carburetors3.jpg

:roflol: they're epic

exactly what i was thinking dude :roflol:
what parts you need?

axle, hubs, sprocket, clutch, bearingings, lock collars ect basically the whole rear end of a kart so i have to go cancel the order and shop around so instead of a reverse trike i'll make some kind of a rail/dragster type kart

[BriggsTwins]

heheh they are good engines.... ran the twin today, and she is just fine

[Rotore]

heheh they are good engines.... ran the twin today, and she is just fine

you should mod that engine and throw it on the kart :wai:

[freakboy]

Go with the reverse trike there cool as hell

[Rotore]

really they are freakin awsome dude especially w/ a good engine

[freakboy]

yeah so just shop around alittle instead of changin ideas every 10 seconds lol.

[BriggsTwins]

this engine is going on a kart. i have a transmission thats going along with it. i am gonna find a yerf dog or equivalent and cut the rear off and build it up. i promised that twin a home and she IS GETTING ONE

[Rotore]

yeah so just shop around alittle instead of changin ideas every 10 seconds lol.
lol i have to many ideas dude but ill jus go with a simple kart that you guys have on this site for now aiming for 31mph :wai:


this engine is going on a kart. i have a transmission thats going along with it. i am gonna find a yerf dog or equivalent and cut the rear off and build it up. i promised that twin a home and she IS GETTING ONE

what kind of tranny? BTW there are some twin brigs on hey mow going up to 11k rpm.

but i was wondering they make a connecting rod for the ch730 series engine thats .010 longer and was wondering if i could use it with the factory crank and wouldnt it give the engine a higher comp and longer stroke since its driving the piston up higher.

[BriggsTwins]

the trans is off the tractor i revived the twin from, 6 speed with reverse, and its a heavy mother. 11K on a twin.....scary...... and yes with a longer stroke youll get compression increases, but stuff specially sized especially billet rods is gonna cost u

[Rotore]

the trans is off the tractor i revived the twin from, 6 speed with reverse, and its a heavy mother. 11K on a twin.....scary...... and yes with a longer stroke youll get compression increases, but stuff specially sized especially billet rods is gonna cost u

stock rods are good enough for now dude

[Kaptain Krunch]

Rods dont determine stroke, cranks do. That rod will give you higher compression, but it will not increase stroke at all.

[BriggsTwins]

that was a duh on my part! :D

[Rotore]

Rods dont determine stroke, cranks do. That rod will give you higher compression, but it will not increase stroke at all.

lol good thanks guys

[jr dragster Tyler]

The longer rod will just increase the piston pop up. Measure how much its in the hole and how much room you have to work with first.

[BriggsTwins]

just millthe head!

[freakboy]

you dont want it popin out father then it should dude not good.

[Rotore]

The longer rod will just increase the piston pop up. Measure how much its in the hole and how much room you have to work with first.

The piston is 2mm away from the head at TDC. ANd as of now it does kinda touch the head but it wont after i get all that carbon of the heads.

so would it be safe to go with a .010 longer connecting rod or should i just go with the standard size?

[freakboy]

a .010 should be alright but you can shave the piston a bit like .05 so you get a lighter piston. just make sure the first pison ring dont come anywere closer to the deck then 1/32

[Rotore]

will do!

[freakboy]

what cubic inch is that engine?

[jr dragster Tyler]

If it where me I would be getting the standered sized connecting rods. You want to measure piston top to deck height with a dial indicator or something equivalent. Remember changing the rod length and nothing else affects the thrust side geometry. Just something to think about...

[Rotore]

what cubic inch is that engine?
its a 44 cubic inch v twin dude here are the specs on it
Engine 4-cycle, gasoline, OHV, cast iron cylinder liner, aluminum block
Rated Horsepower 25 hp (18.64 kW) @ 3600 RPM
Displacement 44.0 cu. in. (725 cc)
Bore x Stroke 3.27 in. (83 mm) x 2.64 in. (67 mm)
Torque 39.9 ft (54.1 Nm) @ 2800
Compression Ratio 9.0:1
Oil Capacity 2.0 quarts (1.9 l)
Lubrication Full pressure w/full-flow filter
If it where me I would be getting the standered sized connecting rods. You want to measure piston top to deck height with a dial indicator or something equivalent. Remember changing the rod length and nothing else affects the thrust side geometry. Just something to think about...

your right i should just get it running at factory specs first and then mod it.

[BriggsTwins]

so who is putting their twin on what....or already put on :D

[modelengineer]

I'd mill the head or mill the deck, rather than buy a .010 longer rod.

[Rickracer]

A longer rod (with a piston that has the correct deck height), will be easier on the piston and make more power. IDK if .01 longer would help much though, probably not worth the trouble unless the plan is just a stronger rod, but the piston MUST match, or it will stick out of the block. :cool:

[Rotore]

so who is putting their twin on what....or already put on :D
Well my kohler is poop i cleaned the block to inspect it and found huge cracks and chips in so cant its trash :mad2: will be takind off the carb, starter, oil cooler, coils and fuel pump and through it on a 18hp kohler opposed...

[kazkepox]

hmm, I'm not sure wether to put my briggs V on a single seat kart or a reverse trike like Irenaat made. his was basically a reverse trike racing kart lol.

[BriggsTwins]

hmmmm
doesnt sosound too bad there. im kinda thinking a chopper maybe

[Rotore]

hmm, I'm not sure wether to put my briggs V on a single seat kart or a reverse trike like Irenaat made. his was basically a reverse trike racing kart lol.

go for the reverse trike dude its awsome!

hmmmm
doesnt sosound too bad there. im kinda thinking a chopper maybe

again go for it

[kazkepox]

go for the reverse trike dude its awsome!



again go for it

I want to try and Find a racing kart and build up a reverse trike with that, if not I will just find a single seat kart

[anderkart]

I checked my inventory for any twins and found this old 1343cc. thang under a couple inches of dust out in the garage. I was thinking maybe I could build a chopper out of it or something... ;)

http://i72.photobucket.com/albums/i172/Mybigpics/DSCN6742.jpg

[kazkepox]

oh and yeah, im back...

[Rotore]

I want to try and Find a racing kart and build up a reverse trike with that, if not I will just find a single seat kart

would work but it would kinda be a hassle converting a race kart into a reverse trike dude since you have to widen the front end and find a way to mount the engine as low as possible. Why not start from scratch?

[BriggsTwins]

hey u leave that bike alone!!!!!!!

[anderkart]

How wide of a front track do you recommend for reverse trikes?

And whats the big advantage of a reverse trike over a regular 4-wheeled go kart anyway? I dont get it. Is it just to be weird, tip over easyer or have less traction?

[anderkart]

hey u leave that bike alone!!!!!!!

Oh, I'll leave it alone alright. It hasn't even seen the light of day or been washed since 1999... :D

[Rotore]

How wide of a front track do you recommend for reverse trikes?

And whats the big advantage of a reverse trike over a regular 4-wheeled go kart anyway? I dont get it. Is it just to be weird, tip over easyer or have less traction?

geometry w/ a reverse trike is different from a 4 wheel kart kinda like human feet which are wider in the front then the heel for balance dude. i'd recommend the front to be 40" and have the engine mounted as low as possible for balance purposes but easier to do burn outs and drifts on a reverse trike then a 4 wheel kart because your only trying to brake traction on one wheel.

[Kaptain Krunch]

geometry w/ a reverse trike is different from a 4 wheel kart kinda like human feet which are wider in the front then the heel for balance dude. i'd recommend the front to be 40" and have the engine mounted as low as possible for balance purposes but easier to do burn outs and drifts on a reverse trike then a 4 wheel kart because your only trying to brake traction on one wheel.

Or you could just build an overpowered 4 wheeled kart and break the tires loose anytime. I've had no problem diggin ruts with mine.

[Rotore]

Or you could just build an overpowered 4 wheeled kart and break the tires loose anytime. I've had no problem diggin ruts with mine.

exactly but in the end it all comes down to preference.

BTW i just got word that i'll be getting another free twin on friday sooooooooooo HELL YEAH!!!! hope this one that atleast the block is good...

[Rotore]

I checked my inventory for any twins and found this old 1343cc. thang under a couple inches of dust out in the garage. I was thinking maybe I could build a chopper out of it or something... ;)

http://i72.photobucket.com/albums/i172/Mybigpics/DSCN6742.jpg

i say make a drag kart dude

[anderkart]

would work but it would kinda be a hassle converting a race kart into a reverse trike dude since you have to widen the front end and find a way to mount the engine as low as possible. Why not start from scratch?

i'd recommend the front to be 40" and have the engine mounted as low as possible for balance purposes but easier to do burn outs and drifts on a reverse trike then a 4 wheel kart because your only trying to brake traction on one wheel.

Sprint karts (like mine) come with extra long front spindles and a stack of wheel spacers that can be instaled in any combonation of inside or outside the front wheel hubs, to adjust the front track width to anywhere between around 36" to a 44" overall width. (depending on kart, wheel and tire brand/sizing)

The bottom of my race kart engine only sits about 2" off the ground.

So my whole point here is... meyby a race kart could be a good candidate for a reverse trike conversion.

Of course just instaling inexpensive skinny, hard tires on a 4-wheeled kart would also create poor traction characteristics and allow for easy drifting.

[anderkart]

i say make a drag kart dude

Back in the early 80's, I briefly considered using this engine in a Dwarf race car but thankfully came to my senses. :D

http://www.youtube.com/watch?v=MApxO4SczXQ

[Rotore]

lol wow dude really

[BriggsTwins]

fun but eh.... not my thing

[kazkepox]

those things can be made street legal, which I find quite funny..

[spiflilas]

yea the quad lobe cam is huge compare to some of the cams seen in these small engines

[hd4ou]

As the owner of a 2002 H-D myself, I say get the bike out and resurrect it as is!!

[BriggsTwins]

what does the briggs twins have? i havent ripped mine open yet cuz i havent had to

[freakboy]

lets see they have a crank a cam two rods and a piston for each rod and valve train and some other stuff.

[Rotore]

what does the briggs twins have? i havent ripped mine open yet cuz i havent had to

lol take the baseplate off and take a look dude

[anderkart]

As the owner of a 2002 H-D myself, I say get the bike out and resurrect it as is!!

Yeah I need to get It goin again but seems like none of my old Buddy's ever wanna ride anymore. (traffic is freakin insaaane here). I might move out in the country pretty soon and I'll get her goin then for sure.

[BriggsTwins]

well i have a honda CX500....she needs some work before shes roadworthy

[Rotore]

Fixer up dude I'm in the search for another twin

[BriggsTwins]

hehe, back to karting..... i found a 2 seater yerfdog on CL worth it?

[freakboy]

how much and what condition?

[Rotore]

Don't kno never really like yerf dog

[Kaptain Krunch]

what does the briggs twins have? i havent ripped mine open yet cuz i havent had to

Thought u rebuilt your twin.

[BriggsTwins]

outside rebuild, never had to take her virginity....yet.... anyway that dog is clean and running.

[Kaptain Krunch]

outside rebuild, never had to take her virginity....yet.... anyway that dog is clean and running.

:roflol:
Doesn't count as a rebuild then, you just replaced some parts and added some paint.

[freakboy]

lol pop that engines cherry.

[Rotore]

If I get a vertical v twin w/ full pressure lub cab can I just re-route the oil pick up and run it as a horizontal?

[modelengineer]

Dry sump it!

[Rotore]

Dry sump it!

what do you mean dry sump it?

[anderkart]

Dry sump is an external oil reservoir tank instead of the normal crankcase method.

[Rotore]

ok but how would i go about ding that dude?

[BriggsTwins]

lol pop that engines cherry.

well i pulled her heads to inspect and drool over the massive bore

[Rotore]

well i pulled her heads to inspect and drool over the massive bore

Nice Now pop the baseplate and drool over the cam

[BriggsTwins]

tempting but its cold outside and i dont have gaskets for her.

[anderkart]

ok but how would i go about ding that dude?

One method would be to corectly relocate the oil pickup. Tap into the oil galley after the pump, run this into the top of your dry sump tank, and then connect the tanks (bottom mounted) return line back into your engines oil galley thats feeding the engine. The tank, cap and lines would have to hold pressure. Theres a lot that could go wrong here and I'm not necessarily suggesting you should attempt this, I'm just answering your questions.

[BriggsTwins]

thats complex.

[Rotore]

One method would be to corectly relocate the oil pickup. Tap into the oil galley after the pump, run this into the top of your dry sump tank, and then connect the tanks (bottom mounted) return line back into your engines oil galley thats feeding the engine. The tank and cap would have to hold pressure. Theres a lot that could go wrong here and I'm not necessarily suggesting you should attempt this, I'm just answering your questions.

thats confusing buddy lol

[anderkart]

If you could mount the dry sump tank under the engine, you could just drill out a sufficient drain hole in the bottom of the engine to allow gravity to fill the tank. Then you'd just need to plumb the oil pickup to draw oil from the bottom of the tank.

Thing is, even in a pressure lubed engine, it still might need the crank splashing oil around to help lube things and you wouldnt be getting this with a dry sump setup.

[Rotore]

If you could mount the dry sump tank under the engine, you could just drill out a sufficient drain hole in the bottom of the engine to allow gravity to fill the tank. Then you'd just need to plumb the oil pickup to draw oil from the bottom of the tank.

Oh ok i get where your going with this dude i think i might just wait it out a friend said he a horizontal laying around his shop bringing it by on monday

[anderkart]

Good idea :D

[Rotore]

lol dude you actually gave me an idea but idk if it would be worth it?

my in-law said that i has a 400cc briggs that i can use its a vertical and single cyl.

do you think that would work if i add a oil pump and tap holes in the block. 1 in the that has a fitting aiming towards the bore and another aiming to the valve tappets?

Then use the coil and carb from the 25hp on it?

[anderkart]

It might, but from what I've learned: Splash oil systems at higher rpm's create a fine mist of oil that lubes everything. I dont know how you could duplicate that with an external pump. (meyby nozzles that sprayed a mist everywhere instead of streams of oil directed at certain componets?)

[Rotore]

It might, but from what I've learned: Splash oil systems at higher rpm's create a fine mist of oil that lubes everything. I dont know how you could duplicate that with an external pump. (meyby nozzles that sprayed a mist everywhere instead of streams of oil directed at certain componets?)

around what rpms?

idk? i might go for it

[anderkart]

I have no idea, probably starts creating a mist at idle.

[Rotore]

I have no idea, probably starts creating a mist at idle.

ok dude im start another thread so i dont flood this one...

[BriggsTwins]

i spied this on craigslist. that is a monster of torque

http://pittsburgh.craigslist.org/grd/1433571748.html

[Rotore]

Nice engine dude wish i had the money for it lol

[BriggsTwins]

it aint bad, ask him for 100$ maybe he will take it

[Rotore]

lol ill call on monday since i was offered another twin from a friend ill catch if its usable if not then ill go for it

[BriggsTwins]

sounds good, that engine looks nice but i dont need another

[Rotore]

Yes it does it'd be a blast to turbocharge it

[BriggsTwins]

oh god they have at least 4.25" pistons, they move air

[Rotore]

Thats massive dude lol i crackd open my in-laws briggs and looks great since he had it running 23hours only thing is it was a bit dirt in the cranj case and cyl and the head gasket looks freakin new so ill be keeping it as a back up.

[BriggsTwins]

good, these engines are unique, i like how the opposed twins stumble when decelerating its such a specific sound

[Rotore]

U want to here one with a bov

[BriggsTwins]

bov?

[Rotore]

Blow off valve u kno wit a turbo set up

[BriggsTwins]

oh i thought so, but wasnt sure

[Rotore]

Lol ok

[BriggsTwins]

i am considering a turbo on the twin.... i moves enough pressure to make decent boost. but i look at it and realize im going to keep the RPM low and use the low end.....

[Rotore]

You can get up to 5000rpm on your twin dude thats a decent amount of exhaust gases to move a rather small turbo liKe a kp31 maybe a 14b or t25 if you add an emissions pump of a v8 to the exhaust manifold to increase exhaust pressure.

[BriggsTwins]

but i dont wanna push her that hard, im leaving the GOV on!!!!! ill take her to 4k at the most

[freakboy]

with the gov on you wont get 4000 rpm

[Rotore]

but i dont wanna push her that hard, im leaving the GOV on!!!!! ill take her to 4k at the most

Ok? Then youll either need a small as$ turbo or a big as$ smog pump buddy

[BriggsTwins]

i can, just needs tweaked.

[Rotore]

You can adjust it by moving the govener arm right?

[BriggsTwins]

actually by tightening a spring on it, it is actually built to run at what ever speed. the screw can give the governer more spring tension and thus more RPM

[Rotore]

So i could set my govener for 6000rpm by using a tighter spring?

Btw the turbo that would fit our engines are kp31 smart car, gt15 saab 9 or mazda 323

[NJOHC]

I did that with my subaru and it worked. It wasnt a twin though......wish it was.

[BriggsTwins]

So i could set my govener for 6000rpm by using a tighter spring?

Btw the turbo that would fit our engines are kp31 smart car, gt15 saab 9 or mazda 323

yes tighter springs fight the governer's pull and keep it low, on the throttle, a spring change will change that

[modelengineer]

Somehow I don't think a mazda 323 turbo would work. Thats a 1.6L or 1.8L engine (can't remember which) making over 80hp without turbo, and reving to 6,000+. A ~20hp ~750cc twin isn't going to cut it.

[Rotore]

Somehow I don't think a mazda 323 turbo would work. Thats a 1.6L or 1.8L engine (can't remember which) making over 80hp without turbo, and reving to 6,000+. A ~20hp ~750cc twin isn't going to cut it.

Gt15 is exactly used on 30hp rhinos and 600's too dude if it does cut it say hello to a v8 emissions pump :p

besides 6000rpm is just the start im hoping to be turning over 8500rpm by next summer

[modelengineer]

Ooooh, well I've got 11000 rpm, so I win. :roflol: :roflol: :roflol:

:auto:

[Rotore]

Lol ill give you that lol hopefully ill be over 50hp by next summer

[freakboy]

i got 20,000 rpm but it aint a twin =( nor a turbo... nor a electric engine lol.

[Rotore]

Then what is it?

[Kaptain Krunch]

one of them lil nitro RC car engines.

[freakboy]

yup

[BriggsTwins]

hehe, i have a couple of those running around.

[modelengineer]

*waits for lemegacool to post saying he's got 80,000 rpm from his turbine "engine"*

[Rotore]

Lol wow

[BriggsTwins]

where has he been?

sooooo who wants to make signatures for the twin jug coalition

[Rotore]

Idk how

[BriggsTwins]

im not sure what it should look like....

[freakboy]

we cant put images in our sigs dude

[BriggsTwins]

yes but what they would look like.... we need examples

[freakboy]

why make something if we cant use it?

[freakboy]

http://pix.4gifs.com/gallery/d/136962-1/Bikini_twins.jpg
how bout that with diygokarts twin posse written on top and bottom?

[BriggsTwins]

hmmmmm
im liking where this is going....

[freakboy]

lmao dont get a hard one buddy

[Rotore]

I gots a chubby

[freakboy]

http://blog.internetnews.com/apatrizio/do-not-want-dog.jpg

[BriggsTwins]

hehehh

[Rotore]

Lmao

[BriggsTwins]

oh dear god

[Rotore]

That dog reminds me of my brothers wife

[freakboy]

Omg lmao

[Kaptain Krunch]

You cant use pics in the sigs here anyways.

[freakboy]

i already mentoned that

[BriggsTwins]

woot lets make text jugs

[Rotore]

Make twin avatars

[freakboy]

ill make one here for ya guys

[BriggsTwins]

ok
sounds good ill cad one up

[Rotore]

Awsome

[freakboy]

It might need a little more editing so we can see the txt when there in our avatars.

[Rotore]

Lol nice work dude

[freakboy]

Thanks.

[BriggsTwins]

sounds like a plan, ill put it up soon! :D

[Rotore]

Sup guys i should be getting another free twin today so expect pictures

[BriggsTwins]

*you dirty...... NICE!!! Lol twins are fun keep em breathing!!!!!

[Rotore]

*you dirty...... NICE!!! Lol twins are fun keep em breathing!!!!!

Get your mind out of the gutter dude :worried2:

Well its kinda dark and all the pictures i took came out pitch black BUT its the same Kohler 25hp Ch730 series 725cc and my parts arrived clutch axle and what not so its been a pretty good day. :wai:

The crank case is perfect except the govener fell off the base plate for some reason, i didnt get a chance to the heads off but the crank case, crank, connecting rods and cam look good.

BTW the engine wont turn over i thought would be because everything in the crank case was broken but they look fine what could it be?

And a quick question i was looking at the specs on the engine and it said 1.9L and its a 725cc so what is it a 1.9L or 0.725L?

[freakboy]

are the rods seized up? on the crank? do the pistons move up or down are they melted to the cylinders. and are the rods melted to the crank?

[Rotore]

are the rods seized up? on the crank? do the pistons move up or down are they melted to the cylinders. and are the rods melted to the crank?
No the rods are fine and the crank journals aré ok for the abuse it's been through the pistons not sure since he said it was sitting outside i was guessing water got into the cylinders and formed some rust on the rings freezing the motor? But i wont be sure till i pop the heads tomarrow.

[modelengineer]

725cc = 0.725L, it's not a 1.9L.

[Rotore]

Ok then that site needs to get it straight... Thanks dude

[freakboy]

But its much easyer to use the ci of the block

[BriggsTwins]

PB or MMO the cylinders you need something to break it loose, and if its a no-go then a bearing might be locked up....

[Rotore]

Yea could be the bearings because i remeber the rods had a bit of play but the crank shaft wouldnt move at all

[BriggsTwins]

ok. well lube them up, a spun bearing in these engines spells death

[Rotore]

Probably hope it usable

[BriggsTwins]

hope so

[Rotore]

Well i took the heads and the rest of the block off and found a bolt melted in the cyl and is permanantly on the head and yes water did get into the cylinders. It had about an 1" of dirt on it so it did over heat and the rings on one piston melted in the groves so cyl needs to be honed and not sure about the bronz pistón and rods.

But will post piks an a couple mins

[Kaptain Krunch]

I think you should just save up for a motorcycle engine, it'll have more power, a transmission, and wind out high/faster.

[Rotore]

Lol im broke for now dude im just using the kohler because i got it for free.

http://www.mocospace.com/html/album/photoalbum-view.jsp?postid=82230455&u=23150608&fbc_channel=1#%7B%22id%22%3A0%2C%22sc%22%3A%22http %3A%2F%2Fwww.facebook.com%2Fxd_receiver_v0.4.php%2 2%2C%22sf%22%3A%22loginStatus%22%2C%22sr%22%3A2%2C %22h%22%3A%22loginServer%22%2C%22sid%22%3A%220.422 %22%2C%22t%22%3A0%7D%5B0%2C%22loginStatus%22%2C%22 InitLogin%22%2C%7B%22session%22%3Anull%2C%22settin gs%22%3A%7B%22feedStorySettings%22%3Anull%2C%22inF acebook%22%3Afalse%2C%22locale%22%3A%22en_US%22%7D %2C%22connectState%22%3A2%2C%22baseDomain%22%3A%22 mocospace.com%22%2C%22publicSessionData%22%3Anull% 7D%2Cfalse%5D http://www.mocospace.com/html/album/photoalbum-view.jsp?postid=82230450&u=23150608&fbc_channel=1#%7B%22id%22%3A0%2C%22sc%22%3A%22http %3A%2F%2Fwww.facebook.com%2Fxd_receiver_v0.4.php%2 2%2C%22sf%22%3A%22loginStatus%22%2C%22sr%22%3A2%2C %22h%22%3A%22loginServer%22%2C%22sid%22%3A%220.063 %22%2C%22t%22%3A0%7D%5B0%2C%22loginStatus%22%2C%22 InitLogin%22%2C%7B%22session%22%3Anull%2C%22settin gs%22%3A%7B%22feedStorySettings%22%3Anull%2C%22inF acebook%22%3Afalse%2C%22locale%22%3A%22en_US%22%7D %2C%22connectState%22%3A2%2C%22baseDomain%22%3A%22 mocospace.com%22%2C%22publicSessionData%22%3Anull% 7D%2Cfalse%5Dhttp://www.mocospace.com/html/album/photoalbum-view.jsp?postid=82230445&u=23150608&fbc_channel=1#%7B%22id%22%3A0%2C%22sc%22%3A%22http %3A%2F%2Fwww.facebook.com%2Fxd_receiver_v0.4.php%2 2%2C%22sf%22%3A%22loginStatus%22%2C%22sr%22%3A2%2C %22h%22%3A%22loginServer%22%2C%22sid%22%3A%220.273 %22%2C%22t%22%3A0%7D%5B0%2C%22loginStatus%22%2C%22 InitLogin%22%2C%7B%22session%22%3Anull%2C%22settin gs%22%3A%7B%22feedStorySettings%22%3Anull%2C%22inF acebook%22%3Afalse%2C%22locale%22%3A%22en_US%22%7D %2C%22connectState%22%3A2%2C%22baseDomain%22%3A%22 mocospace.com%22%2C%22publicSessionData%22%3Anull% 7D%2Cfalse%5Dhttp://www.mocospace.com/html/album/photoalbum-view.jsp?postid=82230439&u=23150608&fbc_channel=1#%7B%22id%22%3A0%2C%22sc%22%3A%22http %3A%2F%2Fwww.facebook.com%2Fxd_receiver_v0.4.php%2 2%2C%22sf%22%3A%22loginStatus%22%2C%22sr%22%3A2%2C %22h%22%3A%22loginServer%22%2C%22sid%22%3A%220.308 %22%2C%22t%22%3A0%7D%5B0%2C%22loginStatus%22%2C%22 InitLogin%22%2C%7B%22session%22%3Anull%2C%22settin gs%22%3A%7B%22feedStorySettings%22%3Anull%2C%22inF acebook%22%3Afalse%2C%22locale%22%3A%22en_US%22%7D %2C%22connectState%22%3A2%2C%22baseDomain%22%3A%22 mocospace.com%22%2C%22publicSessionData%22%3Anull% 7D%2Cfalse%5D

[freakboy]

pics dont work

[Rotore]

opps sorry here ya go

[Rotore]

and wala

[Kaptain Krunch]

pictures are to small to tell whats goin on

[Rotore]

Well basically the pistons and rings are fired due to an in of dirt on the engine and a bolt on some sort i think fell into the cyl and mated with the head and finally the engine after sitting outside for so long water got in side the cyl

[freakboy]

is this the same engine as your other twin?

[Rotore]

Yea same kohler ch730 series

[freakboy]

swap out bad parts for good parts.

[Rotore]

Thats what i plan on doing dude i have a spare head to swap out, hone the cylinders and new rings and were set.

Btw would the engine be able to push a 18x9.5" tire with a 4.2:1 ratio or should i go with 11" tires?

[freakboy]

idk about the gear ratio but with my 20 hp im running 16x 8.5 tires with it geared to do 50

[Rotore]

Lol **** any torque?

[freakboy]

I'll still be burnin the belts and it's gona have good toruqe and If I want more ill put it in a low gear and I forget what ratio ima run to get them speeds.

[Rotore]

Think i might just go with the smaller tire and set the govener for 5500rpm

[BriggsTwins]

lol, do it if your can rebuild the poor thing

[Rotore]

Oh the block is fine dude it's definately getting rebuilt

[BriggsTwins]

http://www.smallenginewarehouse.com/product.asp?PN=422435-0711&desc=Briggs%20&%20Stratton%20Engine%20%2018hp%20Horizontal%201%22 x2-29/32%22%20Keyed%20Shaft,%20Electric%20Start,%20Twin% 20Opposed,%20Dual%20Alt,%20USED

twins!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[Rotore]

That looks kinda like your engine dude

[BriggsTwins]

it is

[Rotore]

That's awsome lol so what do you have planned for it

[jr dragster Tyler]

Twin puke:ack2:

http://i284.photobucket.com/albums/ll33/juniordragster123/DSC03613.jpg

[freakboy]

That could be a problem

[Kaptain Krunch]

Looks like you got a little chip missing from that piston too

[jr dragster Tyler]

Yeah, Just might be a little bit of a problem lmao. You can see more pictures of my sled motor taken apart in my thread in the photo gallery...

[Rotore]

**** what happened there dude looks like a chocolate eating dog took a crap in your crankcase

[BriggsTwins]

That's awsome lol so what do you have planned for it

gokart

[BriggsTwins]

Twin puke:ack2:

http://i284.photobucket.com/albums/ll33/juniordragster123/DSC03613.jpg

who shot up you CC with a paintball gun?!?!

[Rotore]

gokart

Awsome what kind if I may ask?

[BriggsTwins]

ive been eying a late model yerfdog twin seater, gonna chop the rear, drop in a tractor trans, and the twin

[Rotore]

That's heavy dude

[BriggsTwins]

ill have the power and torque to move it

[Rotore]

I know what kind of tranny hydro?

[freakboy]

try and find a peerless 320 like mine its got 1 inch axles and its beefy

[Kaptain Krunch]

try and find a peerless 320 like mine its got 1 inch axles and its beefy

you mean peerless 820.

[freakboy]

yes that one finger hit the wrong button as teacher went by.

[Kaptain Krunch]

haha i just left school, sucks for you.

[freakboy]

lucky *** basterd why u get to leave? oh well i got gym next and were gona beat the crap out of some kid

[Kaptain Krunch]

tech school is closed today and tomorrow so i get half days....im gonna go work on the (S)crap kart, have fun haha.

[freakboy]

you are one lucky dude expect to get hit by a salmon tonight

[Rotore]

You guys have school this week?

[kazkepox]

since I am home schooled I have to work today and tomorow but i get the rest of the week off :)

[modelengineer]

Ahhh uni, I've been on holidays for a week and a half... and the holidays continue until March.

[BriggsTwins]

hehe, since wed, last week ive been sick as hell. going in tomorrow. the trans came out of the tractor and has a horizontal input with 3 speeds and HI/lo