stock internals

[kool-aid54]

how much punishment will the stock internals take. will they take a turbo and nos. If they will take turbo how high boost? I want to make my turbo project as cheap as possible.

[bumpermatic]

If you search for a thread called 'stock internals' you will find it. Serious.

[Silent Drifter]

look man bumpermatic only has 24 posts so hes pretty much a noob like you an hes even tellin you to search thats sad. An since Im bored Ill answer your questions otherwise id tell you to search which you shoudlve done in the first place. But first off you get what you pay for. Yes many ppl can have turbo'd 240s for under a grand but there all used parts an arent very reliable. Next either run turbo or nitrous not both, you dont seem like you have the know how to run both safely an again this will cost you more than its worth. As for stock internals they are pretty strong for a stock motor. You must know what kind of shape your motor is in tho, run some leak down tests an compression tests. See if it burns oil an how many miles are on it. Now if you wanna run nitrous theres plenty of threads on it so search. Ive seen ppl with 30 shot blow while others run 125 shot consitantly. An for turbo if your gonna run with bone stock internals most people dont go over say 7-8 psi. With new pistons you can go twice that. But ive typed long enough if you need more info search.

[matt4pl]

12 psi on stock internals and good tuning is mnost ive heard, 15 psi on excellent tuning but thats at the limit, with excellent parts to back up the set-up. search, there is an entire FAQ on this website in the ka-t section, and countless others on other sites

[TopStreet240]

so psi is the new limiting factor...

[Nathan]

A long time ago in a galaxy far far away, a KA made 350RWHP at 15psi. Oh, and there are a LOT of stock internal KA's making serious power, they just dont all hang out on the internet all the time

[WDRacing]

Dennis drives his KA around making 350 as his daily driver, and he's just using the JWT ECU for tuning.

WD

[C-Kwik]

how much punishment will the stock internals take. will they take a turbo and nos. If they will take turbo how high boost? I want to make my turbo project as cheap as possible.

This depends on your definition of punishment. No cast piston will stand up for very long to hard or sustained detonation for very long at all. But they should be able to take a pretty good amount of reasonable cylinder pressures. Doubling the power does not double the peak pressures. The same way we look at the area under the curve of a dyno chart for an overall picture of performance, the same should be done for peak pressures insude a combustion chamber. Adding boost generally increases pressures the most after peak pressure is already obtained. At double the power, you may only expect to see a 50% increase in peak pressure.

Detonation on the other hand, can easily see peak pressures and heat 10 times the peak pressure of normal combustion. This can do some damage very quickly. Forged parts can't even stand up to sustained detonation. The tempurature of parts starts to rise very quickly when detonation occurs. Too much heat not only make detonation more likely to happen, but softens the metal and allows it to fail more reapidly.

The point is, control detonation and you'll probably not see a problem running a moderate to high amount of boost, even on stock internals. This is assuming of course that there are no issues with your motor.