is it absolutely necessary to replace the stock KA24DE pistons when using a RB T3 turbo or can the stock KA pistons be doable?

 

unless you want your engine to explode... i suggest changing them

make your sig smaller

 

a stock ka can hold 400hp before the ringlands+ rings blow a t3 is nothing and the size of the turbo doesnt mean anything a rb t3 t25 t3/4 wich is bigger etc depends how much u boost it and make sure u add bigger injectors or fmu but a t3 is fine

 

KA can handle 12psi stock headgasket.

You can actually go more with metal head gasket and not need to change internals.

 

u dont measure with psi u measure buy hp 12 psi from a t25 is way differeng than 12psi with a gt35r

 

just about to say that...

 

well PSI is PSI no matter what

CFM is different.

 

no its not 15 psi of a t25 will run hotter than off a bigger turbo hot= less hp, smaller turbos at high boots arent very efficient

 

^ well thats a given.

Its the amount of air that changes not the pressure.

Example.
Meanin that at 12psi on a T25 moves 14CFM of air.

So at 12psi on a T28 i would move 20CFM of air at the exact same boost.

The numbers arent the best but thats the jist of it.

 

listen to levi, he is right. also a ka doesnt hold 400hp, all motors are not alike. it might hold 400hp. good tuning is recomended.

 

yeah im not sure i would try and hit 400hp on stock internals but you can easily get to 270whp of stock internals no prob with fuel managment of course. I've seen plenty of dyno's of people hitting that with the SR20 T25. I think those are some pretty good numbers IMO!

 

T25 is a bit to weak for KA, it dies out way before redline, i suggest T28 or T04Z.

 

lot of good info in here. i was more of a supercharger guy but once my 240 is in my hands im looking to go turbo.

 

hey zenkizen, what kinda addon is that on the rear? who makes and where did u get it? it looks nice!



Try that in a PM next time.

Thanks,
Levi

 

recommendation: dont over-boost the RB T3. the ceramic turbines dont last over 12psi. i found that out the hard way...