Difference between R32 and R33 GT-R motor/wiring?

[gawdzilla]

People that have experience with the two motors and know the difference... I asked in another thread but it was really off topic.

I have an RB26DETT, but am not sure if its from a 33 or 32, or late 32.

1) My oil cap is not the smooth one, it has the notches in it (indicating 32)

2) My oil pump crank collar is the 33 one, taken it apart and see it contacts the entire oil pump collar.

3) I don't know what this is: Dont think I have it http://rbmotoring.com/gallery/album36/abk can anyone identify?

4) I've read that there are o2 sensor differences, but mine came w/ no o2s. i have both FSMs, and the wiring diagrams look no different to me, other than some rearraged diagrams.

5) technorb mentioned the knock sensor subharness is different and goes over cylinder 4 on the 33's? can someone elaborate?

Those with experience, please help me solve this puzzle! thanks.

[b-s14]

your motor has to be an R32 cause the sensor should be on R33s. Could be maybe you got a late 32 or a 32 with 33 crankshaft. so if you have it, your lucky!! lol

[TheSnail]

Sounds like you have a r32 93.5 + . After the issue with the gtr oil pump, Nissan decided to change that in later months of 1993.