My engine tuning, performance, and short rides.

[Denny]

In the early days before cam blanks were widely available they most certainly were welded. Also new lobes were made out of heavy plate and pinned to a shaft to make cams. I think welding on the lobes is a great idea and the others are just jealous they did not think of it first. Go man Go!

Denny

 

[FreeRunner15]

Let's take one small analogy of a very small piece of a very complex machine for an example: in the 60's "rails" were front engine machines that smoked the tires almost all the way down the track. Now..."top fuel dragsters" don't smoke the tires unless something goes wrong. Besides the suspension design, the rear engines, the better tires and the top crew chiefs...one little itsy bitsty thing that can escape attention unless attention is paid is the rear tires...despite the fact that years of development have gone into thr development of the rubber compounds to make thrse tires grip...there's a very simple yet ingenious action that goes on there....

These things are nearly flat at take off....giving extra traction...but as they "spool up"...something else happens you can see in slow motion...the "footprint" of these slicks becomes smaller...while the diameter increases dramatically....essentially...an extra gear!

So...unless you REALLY study something..and understand where it started...and where it is now...you are just as likely to follow the road of past failure as blaze a trail through new territory! !!! Sorry...but that's the truth...if you want to buck the status quo....first...you have to know and understand it....

And being unable to capitalize or punctuate properly in a simple post....does NOT inspire confidence in me that you even have a clue....

Just to start with: what lift/duration / and lobe separation are you starting with....and what are your target numbers...and why?

i do understand the stretching of a weld i was reading about cast iron welding i guess it is why the rod is so expensive being made of nickel.

and as far as cam design i am looking for something that provides phenomenal torque with a high rpm probably around 7000-8500 max. but it has to have the ability to get there quickly.

i'll take care of getting a different torque converter and torque converter accessories such as the driven spring after that. along with a stronger valvetrain if needed.

---------- Post added at 10:19 PM ---------- Previous post was at 10:10 PM ----------

That being said.. are their any cams that fit my needs? I presume the regular black mamba cam would have to suffice.

 

[chancer]

and as far as cam design i am looking for something that provides phenomenal torque with a high rpm probably around 7000-8500 max. but it has to have the ability to get there quickly.
I presume the regular black mamba cam would have to suffice.

I dont know about for a "predator"
But with those "wishes" Look into the Edelbrock Briggs parts for Jr Dragsters.
I would assume they "get there quickly", and must get to those RPMs.

But why. The main reason for higher RPMs on a yard kart is to go a little faster.
Assuming your Mudder tires are 15" and you are geared 6:1 then 8000 RPMs will get you to 60mph. I dont think Dale Earnhardt would drive your kart to that speed.

So why the RPMs?

 

[FreeRunner15]

I dont know about for a "predator"
But with those "wishes" Look into the Edelbrock Briggs parts for Jr Dragsters.
I would assume they "get there quickly", and must get to those RPMs.

But why. The main reason for higher RPMs on a yard kart is to go a little faster.
Assuming your Mudder tires are 15" and you are geared 6:1 then 8000 RPMs will get you to 60mph. I dont think Dale Earnhardt would drive your kart to that speed.

So why the RPMs?

There is a gokart race track near my area. But mainly i would chance it on exploring the roads.and a bit on the highway.
Racing cars as well.
The reason i need it to have high rpms and to get there as quick as possible, well my username is Free..Runner.. FreeRunner. Studying the roads and routes and hiding spots. Not "running" anything other than my kart, Po Boy
Racing my car/t against other racers and/or,hahaha shall i say(all while being subtle)..Challengers? organized stuff.

i would like it to be able to beat a mild cammed 80-something foxbody mustang to 60 would be nice.its either v6 or v8. i am geared for it 4:1 but i believe i've only hit about 45-52mph. It was kinda quick but needs a wider powerband. it seems to run out at about, i dont know, ..5200rpms with 18pound springs? it keeps going but it slows to a crawl.

but yeah.. need for speed and the ability to get there quickly.

 

[mckutzy]

...................
wow......

.....

 

[bob58o]

You also can weld inside the combustion chamber to increase compression.

 

[FreeRunner15]

...................
wow......

.....

lol, i know right? Didnt expect that did ya.
i still have plenty of mods to do .

 

[chancer]

LOL! I do not have the answer. Why'd you post?

I wish I knew. I really should take my own advice!

Its like a black hole! you just get Sucked into
Chancer out!

 

[Poboy kartman]

nope....well...let me rephrase that:nope!!!! See...it's not just the welding that's a problem....

Just to start with: What lift/duration / and lobe separation are you starting with....and what are your target numbers...and why?

there is a gokart race track near my area. Not "running" anything other than my :

mouth?

 

[ChromeRhino]

Nope....well...let me rephrase that:NOPE!!!! See...it's not just the welding that's a problem....you lack the ability and equipment to pull it off. Basically...as the saying goes: you don't stand a snowball's chancer in He77 to pull it off.

Just thinking you can shows a deep void in knowledge. Put it this way: you must intimately understand something before you can improve it...(and you don't....but even IF you did...you simply DON'T have the tools to make it happen.

Let's take one small analogy of a very small piece of a very complex machine for an example: in the 60's "rails" were front engine machines that smoked the tires almost all the way down the track. Now..."top fuel dragsters" don't smoke the tires unless something goes wrong. Besides the suspension design, the rear engines, the better tires and the top crew chiefs...one little itsy bitsty thing that can escape attention unless attention is paid is the rear tires...despite the fact that years of development have gone into thr development of the rubber compounds to make thrse tires grip...there's a very simple yet ingenious action that goes on there....

These things are nearly flat at take off....giving extra traction...but as they "spool up"...something else happens you can see in slow motion...the "footprint" of these slicks becomes smaller...while the diameter increases dramatically....essentially...an extra gear!

So...unless you REALLY study something..and understand where it started...and where it is now...you are just as likely to follow the road of past failure as blaze a trail through new territory! !!! Sorry...but that's the truth...if you want to buck the status quo....first...you have to know and understand it....

And being unable to capitalize or punctuate properly in a simple post....does NOT inspire confidence in me that you even have a clue....

Just to start with: what lift/duration / and lobe separation are you starting with....and what are your target numbers...and why?

Something that made me realize just how much research and development goes into those top fuelers is when I learned that they build them big ol cranks certain degrees out of alignment/timing because the engines make so much torque it twists the crank... so at full power they are allowed to make more hp, more efficiently being that it twists the crank to the correct timing Now there's some serious number crunching going on in that design process!

 

[FreeRunner15]

mouth?

more like my money stack when i get done. ha

---------- Post added at 11:32 PM ---------- Previous post was at 11:31 PM ----------

Something that made me realize just how much research and development goes into those top fuelers is when I learned that they build them big ol cranks certain degrees out of alignment/timing because the engines make so much torque it twists the crank... so at full power they are allowed to make more hp, more efficiently being that it twists the crank to the correct timing Now there's some serious number crunching going on in that design process!

wow. this stuff gets deep.

 

[chancer]

Or some serious engine breaking. talk about a test track.
Amazing how smart those guys are. and most of the population looks at them like overglorified grease monkeys. but they some sharp sumbtches.

 

[ChromeRhino]

You also can weld inside the combustion chamber to increase compression.

You, sir, possess a special kind of nonchalant evil, that, when combined with your delegable type encouragement, is humorously unconscionable. Atleast enourage him to design a proper scatter shield first! Lol

 

[FreeRunner15]

You also can weld inside the combustion chamber to increase compression.

i'm not going to say that's a bad idea but i don't think i will do that one especially since the smaller cc heads are fairly cheap on ebay.

good legit suggestion though.

 

[Denny]

In drag racing we welded on heads all the time. Need to change a port shape or runner, weld. Need to change a combustion chamber shape, weld. Need to change a compression ratio, weld. I say get some aluminum wire and go for it. You guys pick on him but he has some really good ideas I think he should run with. Sometimes you guys are just mean.

Denny

 

[ChromeRhino]

Or some serious engine breaking. talk about a test track.
Amazing how smart those guys are. and most of the population looks at them like overglorified grease monkeys. but they some sharp sumbtches.

Yeah, no kidding. I had the opportunity to get a few hints from a major engine builder with a several NASCAR, INDY, Formula 1 and other championships to his credit on his way of building an engine and it completely changed my whole line of thinking about building a fast, efficient engine. His level of intellect was astonishing. He was one of those "innovative" and "out of the box thinkers" everyone laughed at with his custom ground cams, custom heads, goofy carbs, trick Helmholtz matched tuned intake runners, 23:1-28:1 compressions and his opinion that dyno numbers don't matter.... until he started collecting trophies and championships.

I spent atleast the next 3-4 months after that researching, delving into the sciences involved and crunching numbers to try to fully understand what I had learned. Just being in the room with some of these guys might increase your IQ by ten points. Talking to them makes you feel like a retard though lol

 

[Poboy kartman]

Yeah, no kidding. I had the opportunity to get a few hints from a major engine builder with a several NASCAR, INDY, Formula 1 and other championships to his credit on his way of building an engine and it completely changed my whole line of thinking about building a fast, efficient engine. His level of intellect was astonishing. He was one of those "innovative" and "out of the box thinkers" everyone laughed at with his custom ground cams, custom heads, goofy carbs, trick Helmholtz matched tuned intake runners, 23:1-28:1 compressions and his opinion that dyno numbers don't matter.... until he started collecting trophies and championships.

I spent atleast the next 3-4 months after that researching, delving into the sciences involved and crunching numbers to try to fully understand what I had learned. Just being in the room with some of these guys might increase your IQ by ten points. Talking to them makes you feel like a retard though lol

No problem Ron...talking to you makes me feel like you're a retard too!!!!...Just Kidding....(I couldn't help myself! )

 

[Denny]

No problem Ron...talking to you makes me feel like you're a retard too!!!!...Just Kidding....(I couldn't help myself! )

That's some funny stuff right there!

Denny

 

[ChromeRhino]

No problem Ron...talking to you makes me feel like you're a retard too!!!!...Just Kidding....(I couldn't help myself! )

Now that's just plain mean. Funny... but mean. I really hope you become a nicer person once your nipples finish healing from yanking them stickers off. ::okes you hard in the nipple::: And just because your old man saggy sack got tangled in your spurs, Cowboy, it doesn't give you the right to get on here and take it out on me.

Was that a little too far? I can never tell. This post might need approved by a moderator.

 

[landuse]

This thread....