Performance Modifications Thread.

[x-Speedy-212-x]

Fuel Upgrade: This stuff's really good if jetted correctly. Even works good if jetted too rich. Pricey though.$4.50

 

[x-Speedy-212-x]

Filed top 2 piston rings (hopefully not too much) off camera)
and
Bigger Main jet.
https://www.youtube.com/watch?v=KjPN8jRLl4M

---------- Post added at 12:33 AM ---------- Previous post was at 12:26 AM ----------

Remember: every other build is different.
Mine is especially unique.

 

[ezcome-ezgo]

[/COLOR]Remember: every other build is different.

Which means every other build is the same.

 

[x-Speedy-212-x]

I'm too excited.
Filed the piston rings..tested the motor, and the 212 is back in action ! stronger than ever and it doesn't have blow-by like james bond's smoke screen.

Notice: Filing piston rings only required for aggressive cams like mine.

It's always interesting to be me when nearly everyone says it's stupid, cant be done, wont be done , but when it does get done they hardly ever even say "wow" or that they were the wrong one because they're jealous. Only for me to do another "crazy" thing again and the cycle to repeat.

I now need a bigger main jet or a bigger emulsion tube.
When I go past half throttle, you can see in the video it hits a flat spot.

Flames: There's never a moment when this motor doesn't produce flames at idle or deceleration.

 

[Randy H]

I appreciate your out of the box thinking. I spend too much time thinking about the box.

I for one am interested in your thoughts on ring end gap, especially when it comes to forced induction.

In the interest of science though, you have to have documentation of testing.

The most brilliant minds in the world had to prove themselves.

 

[gman3850]

I'm too excited.
Filed the piston rings..tested the motor, and the 212 is back in action ! stronger than ever and it doesn't have blow-by like james bond's smoke screen.

Notice: Filing piston rings only required for aggressive cams like mine

Plz tell me your joking. A cam doesn't determine the ring clearance gap. This is calculated based on bore and piston manufacture. Also based on external power adders (nos, turbo, supercharger). Plz stop giving people stupid advice.

 

[outcrydrummer]

I'm too excited.
Filed the piston rings..tested the motor, and the 212 is back in action ! stronger than ever and it doesn't have blow-by like james bond's smoke screen.

Notice: Filing piston rings only required for aggressive cams like mine.

It's always interesting to be me when nearly everyone says it's stupid, cant be done, wont be done , but when it does get done they hardly ever even say "wow" or that they were the wrong one because they're jealous. Only for me to do another "crazy" thing again and the cycle to repeat.

I now need a bigger main jet or a bigger emulsion tube.
When I go past half throttle, you can see in the video it hits a flat spot.

Flames: There's never a moment when this motor doesn't produce flames at idle or deceleration.

Ok im sorry to be like this but this needs to be said.........too many young impressionable minds here not to point out misinformation.

There are essentially two types of rings ( there are lots but for this point only two.
They are standard rings and file fit rings.
When you buy an engine or replacement rings they are pre gapped...... usually much more than actually needed to be safe.
Excess gap on rings isnt bad but it isnt as efficient as a tighter gapped ring.
When the engine is operating the rings retain heat and expand. The gap is necessary so they dont butt together and marr the cylinder wall (or worse).

The second type of ring is a specific set of file fit rings. These rings are longer or have less gap so they can be file fitted to the cylinder for best performances.


So.........

If you filed your standard rings because of an aggressive cam than your way of base here.
If you had nitrous, turbo, etc that really caused a heck of a lot more heat that would expand the rings more than the gap ( unlikely since the ring gap for predators etc is very geneous) than you just threw hp away.

Like i said this isnt to bash you and there are always exception i just dont want people filing standard rings because they put in an aggresive cam in....

---------- Post added at 12:58 AM ---------- Previous post was at 12:54 AM ----------

Also you keep saying its better or more powerful.....its never been on a moving kart or bike......how do you test or compare an engine under no load????

 

[FreeRunner15]

Plz tell me your joking. A cam doesn't determine the ring clearance gap. This is calculated based on bore and piston manufacture. Also based on external power adders (nos, turbo, supercharger). Plz stop giving people stupid advice.

What has been done is correct. A power adder does what??? Increases compression??
It forces the rings outwards. This is the EXACT equivalent.
Power adders add fuel and oxygen. a Cam lets more air in with mixed fuel.

Try one of my custom cams and see how long your bore lasts without being filed.
A black mamba .275 will not have blowby. But what would you know about that, newbie? You buy yours pre-made while the rare percentage actually study the engineering part of it. You base your knowledge on hearsay. Do you even know what each camshaft spec does? You don't.
THERE'S A REASON you only hear about black mamba. because the custom cams require a LOT of work to get the engine running correctly.

A .290 cam doesn't have blowby. But would you know that? Are you an experienced engine builder? No you aren't. You bought yours premade.

Go buy a .380 , or even a .400 lift cam and let us ALL see what happens when you get your engine running. K?

Why am i even contesting this.
Adding you to the ignore list.

 

[x-Speedy-212-x]

Just going to ignore the above and post this here:
This was after filing the piston rings. Works great. I don't think i have a video of the before affects of non-filed rings. But it smoked really bad.
https://www.youtube.com/watch?v=D_QaJJr4SYo

Only reason it smoked for a half second in this video is because the engine was choked during that moment.

 

[gman3850]

ok do what ever you want and show everyone how retarded you are.

oh and before you go off calling everyone newbies and trying to show how you can google stuff before you fight, remember a few of us on here actually have automotive AND ENGINEERING backgrounds. and of course i buy my motors premade, i dont have the tooling to cnc a block or build parts, but me along with hundreds of people on this site build our motors and do it the right way. Not this hackery bull**** you do.

so go ahead and destroy your engine. For anyone else out there remember do not do what this idiot does and actually take your time to do it the right way

 

[outcrydrummer]

What has been done is correct. A power adder does what??? Increases compression??
It forces the rings outwards. This is the EXACT equivalent.
Power adders add fuel and oxygen. a Cam lets more air in with mixed fuel.

Try one of my custom cams and see how long your bore lasts without being filed.
A black mamba .275 will not have blowby. But what would you know about that, newbie? You buy yours pre-made while the rare percentage actually study the engineering part of it. You base your knowledge on hearsay. Do you even know what each camshaft spec does? You don't.
THERE'S A REASON you only hear about black mamba. because the custom cams require a LOT of work to get the engine running correctly.

A .290 cam doesn't have blowby. But would you know that? Are you an experienced engine builder? No you aren't. You bought yours premade.

Go buy a .380 , or even a .400 lift cam and let us ALL see what happens when you get your engine running. K?

Why am i even contesting this.
Adding you to the ignore list.

Ok so keep proving your lack of real knowledge. Its not because of an increase in compression its because of an increase in heat...heat causes the rings to expand and the gap to decrease....to little gap and they close and thats bad. Standard rings generally have way too much ring gap unless you are using a power adder. Sorry to bust your bubble but your cam doesnt warrant creating an even larger ring gap.

And tell me this.....
How much did you remove from the rings?
What tools did you use?
How did you determine what the proper ring gap should be???

---------- Post added at 02:10 AM ---------- Previous post was at 02:06 AM ----------

Might i also add that you previously didnt even know what static compression was or how to calculate it. Didnt you argue that point with a compression gauge for the longest? Lol

 

[outcrydrummer]

Fyi this is a sbf 347 i built with hellfire nitrous rings file fitted.
This engine gets 200hp worth of nitrous

 

[outcrydrummer]

Just going to ignore the above and post this here:
This was after filing the piston rings. Works great. I don't think i have a video of the before affects of non-filed rings. But it smoked really bad.
https://www.youtube.com/watch?v=D_QaJJr4SYo

Only reason it smoked for a half second in this video is because the engine was choked during that moment.

You have a lot of sparks coming from the exhauat. If it has been running that little it ahouldnt have that much carbon buildup already to be doing that.
Also looks like your insanely rich on the tune.

---------- Post added at 02:39 AM ---------- Previous post was at 02:38 AM ----------

And put an air filter on that thing. Looks like a piece of pipe. You need a filter to prevent contaminents from sucking up into the valves and cylinder.

 

[x-Speedy-212-x]

You have a lot of sparks coming from the exhaust. If it has been running that little it shouldnt have that much carbon buildup already to be doing that.
Also looks like your insanely rich on the tune.

I'm confident enough to say I need to file just a tad more of the piston rings.
Before i filed it had tons of smoke and spit sparks like you see in the video but a lot worse which i'm sure is just hot oil that blew by the rings.
All the extra stuff is oil spraying out of a hole in the crank case. I have two holes there. One was for an oil-return from the turbocharger and the other was a trial-and-error pressure-vent. Just never sealed them up.

You should've seen my previous eBay carburetor. Gas just poured into the engine even while in the "off" position. So bad it was coming out of the intake. Ended up just making a video showing what main jet and carb i run and putting the old one away.

[/COLOR]And put an air filter on that thing. Looks like a piece of pipe. You need a filter to prevent contaminants from sucking up into the valves and cylinder.

It is. I used it to attach the hose from the turbocharger. Now I guess I can use it as an intake runner.
Intake runner explained: http://auto.howstuffworks.com/question517.htm

 

[Randy H]

Ok Speedy X Runner

Let me give you my explanation of blow by.

You build an engine and I build an engine. Mine will BLOW BY yours.

 

[x-Speedy-212-x]

Ok Speedy X Runner

Let me give you my explanation of blow by.

You build an engine and I build an engine. Mine will BLOW BY yours.

Sounds like a Challenge

-------
Blow-by defined:
http://performancetrends.com/Definitions/Blow-By.htm

"Typically, the higher the torque an engine makes ------- the higher the potential for Blow By. "

---------- Post added at 06:38 AM ---------- Previous post was at 06:22 AM ----------

Found the picture : BEFORE I FILED THE PISTON RINGS.
What severe blowby looks like on a small engine:

---------- Post added at 06:41 AM ---------- Previous post was at 06:38 AM ----------

HOW IT LOOKED COMING OUT OF THE TURBOCHARGER:
and man it was an oily mess to clean.

 

[ezcome-ezgo]

This really is a tribute to these Predator engines: even after your repeated attempts to ruin it, it still wants to run.

 

[Whitetrashrocker]

I filed my rings twice, they still don't fit.

 

[Poboy kartman]

There's"thinking outside the box", and then there is being an idiot. Blowby is caused by gasses escaping through the gaps in the piston ring ends so you fix that by making the end gaps larger?

You are a YouTube hore, yet have ABSOLUTELY NO PREVIOUS engine builds save this one, yet you call members with 10 times your experience " newbies". ( Actual engine experience, not smoking smokeless tobacco or guzzling vodka.)

You have to have two accounts , so your "imaginary friend" can pat you on the back.

You don't need this forum, you need therapy.

Get ready for the ban hammer, buddy.

 

[DaiSan76]

This really is a tribute to these Predator engines: even after your repeated attempts to ruin it, it still wants to run.

These engines are amazing. I left one sitting for 3 years (with ethanol gas in it) and it fired up after a few pulls using that 3 year old ethanol gas. I have a Polaris quad that needs a carb clean after sitting for a couple weeks.