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350RWKW out of RB30DET?

RBCalais

By RBCalais,
in Engines & Forced Induction

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RBCalais Enthusiast

RBCalais

Posted
Posted

Hi everyone,

I have bought a complete RB25DET motor and I am putting the head onto a standard 3L bottom end. I beleive the 3L is fairly strong. Provided that it holds up will it be possible to get 350RWKW out of it with only these bolt ons?

GT40, PowerFC, Intake Plenum, FMIC, 3" exhaust, 550cc side fed injectors.

Around how much boost will I need to run? Also if I need to run more boost, what is the best method to prevent detentation? ie water injection?

I wasnt sure whether or not to put this on the other thread but its too long to go through, sorry if something simliar to this has been posted. :Oops:

Thanks Edward

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https://www.sau.com.au/forums/topic/64194-350rwkw-out-of-rb30det/
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Jago Mentor

Jago

Posted
Posted

an aftermarket head gasket would be nice to drop comp ratios a bit more so you can run higher boost.

Uprated fuel system to cope with the demand, just injectors won't be enough, a pump upgrade would be good, or just go the whole hog and get the propper high power fuel setup, with surge tanks etc

Best method to prevent detonation - don't mix high boost with an already high compression ratio. Give it a good dyno tune too, to get the cam timing right and the Fuel:Air ratios

TTT Grand Master

TTT

Posted
Posted

rubbish.

rb30 bottom end and rb25 head will give it 8.3:1 compression... that's not high..!!

as for 350rwkw... it would definitely be pushing the stock rods and pistons at that level.

You really should read the 91 pages that are there in that thread.

also, saying GT40 turbo doesn't really mean anything.. what is it's rating? AR's etc... these will tell you if it will flow enough to produce the power you want.

these have been covered in that thread.

Jago Mentor

Jago

Posted
Posted

i wasn't saying it would give a high compression ratio, i was saying a higher compression ratio is something you want to avoid when running higher boost

Plus if you do change the gaskets then there's one less thing you will need to worry about later on

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