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Wednesday, April 22, 2020

Broken Crank Angle Sensor Alignment Pin Fix - RB26 - CAS

R34 and R32/R33 CAS
R34 and R32/R33 CAS

R34 and R32/R33 CAS
R34 and R32/R33 CAS



The crank angle sensor on an RB series engine is driven from the exhaust camshaft.  The RB20,RB25, RB26, and VG30 all use the same type of splined drive, with a half moon alignment.   This half moon to align the CAS can be broken when people run the engine without a front cover, and no washers to space the cas properly.  

IMPORTANT NOTE. The RB CAS IS 180 OUT FROM THE Z CAS.  Thanks Darrell for that information.  So make sure you mark/make sure where the flat/half moon should be, prior to replacing it. 

Nissan doesn't sell the CAS alignment pin separately, but Jim Wolf Technology does.   So if you pulled your CAS off to paint the front cover, put that cool clear cover on, or to actually do work to the engine, and now it pops, backfires, and won't start, you may be missing the 1/2 moon alignment pin. 

JWT CHROMOLY CAS DRIVE PIN Fits RB26
JWT CHROMOLY CAS DRIVE PIN Fits RB26

JWT CHROMOLY CAS DRIVE PIN Fits RB26


VG30DE(TT) JWT CHROMOLY CAS DRIVE PIN. A WORN CAS DRIVE PIN CAN CAUSE IGNITION TIMING TO WANDER UNPREDICTABLY. IRONICALLY, THIS IS A WEARING PART OF THE VG30DE ENGINE, YET NISSAN HAS NEVER CHOSE TO SELL IT SEPARATE. YOU NEED TO BUY THE COMPLETE CAMSHAFT TO GET IT! JWT OFFERS THIS CHROMOLY CAS DRIVE PIN SEPARATELY AND IS THE SAME PART CURRENTLY SUPPLIED WITH ALL JWT BILLET CAMS FOR THE VG30DE(TT)

FITS:
300ZX (Z32), ENGINE SPECIFIC, J30,


ENGINES:
VG30DE, VG30DETT, RB20,25,26 DE(T),


ENGINES:
VG30DE, VG30DETT, RB20,25,26 DE(T),
IMPORTANT NOTE. The RB CAS IS 180 OUT FROM THE Z CAS.  Thanks Darrell for that information.  So make sure you mark/make sure where the flat/half moon should be, prior to replacing it. 



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