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What's The Difference

yogibear

By yogibear,
in Engines & Forced Induction

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funkymonkey Grand Master

funkymonkey

Posted
Posted

the blocks are identical as far as I know... well... identical as long as you're comparing an R33 GTS RB25DE to an R33 GTS25t RB25DET. R32 RB25DE, and stagea RB25DET (AWD) might be slightly different.

QWK32 Veteran

QWK32

Posted
Posted (edited)

the compression ratio of the rb25de is higher than the rb25det.

and which rb25de are you talking about, 32 33 or 34?

32 and 34 rb25de have different cam specs to the 33 rb25de. both the 33 rb25det and rb25de share the same cam specs though.

Edited by QWK32
R34GTFOUR Mentor

R34GTFOUR

Posted
Posted

yep they are the same, even the heads a physically identical. The only difference is cams, valve springs, and pistons really.

All rb25de i have seen have oil and water provisions already tapped out with a bolt plugging them which are ready for the turbo to be bolted on. The only turbo line that isnt on the n/a block is the turbo oil return which is easy to drill out and tap anyway.

If you are rebuilding the engine and you can get a n/a very cheap it will be fine

R34GTFOUR Mentor

R34GTFOUR

Posted
Posted
if your using just the block it should be fine but you will need to drill oil squiters in if you get it cheap enough it will be worth it

but a n/a doesnt have oil squirters

if he runs forged pistons in the rebuild it will be fine without oil squirters

SECURITY Grand Master

SECURITY

Posted
Posted

yep, those ones.

oil squirters are a bitch to do custom. you have to find the oil galley then tap into it, then drill and tap the hole for the nut to go into, as well as the little circle thing for the squirter arm to fit into.

just get a bare turbo block for 250-ish.

or even go rb30 :yucky:

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