Supra purchase question.

[Guest Vega]

Hello,

 

I am about to buy a MKIV Supra 6-speed and have looked in the FAQ but have not found the answer to this question. Generally speaking, how much rear wheel horsepower (ballpark) does a single turbo supra with stock engine internals create on non-race regular pump gas and at which maximum safe boost level?

 

My other question would be; would upgrading the engine internals help to achieve higher horsepower numbers or would detonation still be the limiting factor on regular pump-gas regardless of how tough the engine is?

 

I have no race fuel or any fuel for that matter above US 93 octane around where I live.

 

Thanks in advance!

[Jake]

Generally speaking, how much rear wheel horsepower (ballpark) does a single turbo supra with stock engine internals create on non-race regular pump gas and at which maximum safe boost level?

It depends. The choice of turbo would be a huge factor, as would a bunch of other things. I afraid it's one of those "how long is a piece of string" questions.

 

would upgrading the engine internals help to achieve higher horsepower numbers or would detonation still be the limiting factor on regular pump-gas regardless of how tough the engine is?

Not really. It would strengthen the engine which obviously would you allow you to run more power than the stock parts could handle but the stock parts are very strong anyway. There are many guys in the USA with 600 (and above) RWHP on stock internals.

[Ian C]

Detonation will fry any engine no matter how tough it's internals are. The beefier internals are there to deal with increased shove from the mix burning and higher intertial forces from increased revs.

 

-Ian