I've made the decision to go turbo on the 9th. I am looking at getting 300-350 to the wheels. I am a little confused on about when I should upgrade my internals. Anytime I have had boost in the past, I have ran 7 psi of boost on the stock internals and it seemed fine and reliable. I know A LOT depends on the tune, but I would like some outside input on whether to go forged with the internals or not.
Turbo Noob right here!
- Thread starter thatSIguy
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The fox marketing sema car had the full-race turbo. It had 450hp and it was running the stock internals. They had updated the clutch, but that was mainly it.
9000 RPM
Well-Known Member
upgrade when yours goes boom
HeelsandEers
Well-Known Member
You can run 7 psi, very safely on these engines. It's nothing.
11-12 psi would put you at about 400whp, and even that is considered a "safe" amount for stock internals.
11-12 psi would put you at about 400whp, and even that is considered a "safe" amount for stock internals.
GSquared
Well-Known Member
^ I am going off of that train of thought. Before I got the turbo I decided on 10.5, but we will see where that goes. I believe there was also talk of the transmission blowing before the engine ever would. I'm not sure if that is true or what -- hopefully someone with that knowledge can chime in.
HeelsandEers
Well-Known Member
Yes, you are far more likely to break your tranny before your engine gives. 300wtq is about the level the 8th gen trannies start to break. I'm not sure if the 9th gen trannies are stronger or not. My guess is they're probably about the same.
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