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View Full Version : rb25dett T-28 for red-top question


tnd240
01-10-2003, 12:05 PM
hi guys, i found someone selling their rb25dett T-28's. he says it bolt's right on to the red-top T-25 manifold (unlike the s14/5 T-28's)

is this true?? will i have to modify the oil and water lines, or is it a total bolt-on affair??

aside from the flange compatibility, are they actually the same spec T-28's as on the s14/5's?

thanks
J.d

AKADriver
01-10-2003, 01:59 PM
There's no such thing as an RB25DETT.

The RB26DETT uses twin T28's. The spec is different than the SR20DET T28's.

SR20DET = 0.64 exhaust A/R, 60 trim compressor
RB26DETT = 0.48 exhaust A/R, 60 trim compressor

This turbo is really the wrong size entirely for an SR... It'd work nicely on a smaller engine (1.6L or less).

The RB25DET used a Nissan-made T3 style turbo that won't bolt up.