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View Full Version : Rb20det Crank pulley Question


90sidewaysS13
02-19-2013, 07:20 PM
Have searched found only 1 thread with alot of yes it will work and no it wont work arguing so there was never an actual answer to this question

Can I use a dual cam Ka crank pulley on my rb20det???

Picked up the rb swap from a buddy and forgot to grab the crank pulley Swap was in pieces, Well now the crank pulley has ended up as part of a scrap run so no chance of getting it back, I have to dual cam motors with crank pulleys so im hoping someone will know if this will work before trying to locate a crank pulley

Slide~or~die
02-20-2013, 12:49 PM
From WIKI "A harmonic balancer (also called crank pulley damper, crankshaft damper, torsional damper, or vibration damper) is a device connected to the crankshaft (http://en.wikipedia.org/wiki/Crankshaft) of an engine to reduce torsional vibration (http://en.wikipedia.org/wiki/Torsional_vibration) and serves as a pulley for drive belts." -Wiki

So im no expert, but i would say no the KA crank pulley (HB) wont work on your RB. You would have crank failure because the KA Pulley (HB) is designed for a 4cyl and is balanced specificly for it, your RB is 6cyl and it wouldnt dampen the vibrations properly leaving you with Engine failure.

Even if my logic is wrong here i still dont think it will work.

So here is one for $60. OEM/Used
RB20 Harmonic Balancer - Raw Brokerage - Your #1 source for GTR and RB parts! (http://rawbrokerage.com/RB20-Harmonic-Balancer-rb20-crankpulley.htm)