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Rb20 Turbo On Rb25

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hey i got a r33 with a blown turbo, but i have a rb20 turbo in the shed... whould it be a huge downgrade to bolt this on? only want to run 10psi or so

cheers dylan

  • Author

anyone? need car going asap, its my only car with work on monday! needs to be drivable

You can put it on, it'll literally boost on idle though. I'd be keeping the boost fairly low as well just so it's driveable and not blowing hot air into the engine (the turbo will be sitting way out of it's efficiency range)

It is a fairly big downgrade as you're not going to get much oomph out of it, you may also get detonation from all the extra boost low in the rev range.

It will be driveable...and it will be VERY responsive...but power will be down a fair bit...on a rb20 when upgrading to a rb25 turbo we see gains of around 20+rwkw...so in your case probably factor in a loss of around that amount...

  • Author

allrite cheers, ill just buy a standurd 25er

thnx for responces!

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