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Rb25et Head

adamhr33
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Crans Mentor

Crans

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The heads are the same apart from the following.

1) This is more to do with the electrics that connect to the head. S1 uses an igniter S1.5 and S2 coil packs contain the ignitors.

2) Late model Series 2 heads used the r34 intake cam and CAS <- Correct me if i am wrong

The may be more

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relic21 Contributor

relic21

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yeh it was roughly ?/8/07 onwards.. they are easily to pick as the crank angle sensor is a black plastic and not the silver aluminium of the earlier models.. its meant to have a r34 exhaust cam not the inlet :D .. which has a smaller duration and higher lift.. but when i had my head completely dissembled the lobes measured exactly the same and they were both smaller than the lobes on the gtr head, so i would guess that the different cam is just an incorrect assumption based on the fact the cas has the 34 style join to the cam.

hope that helps

Jarrod

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