I've done a search in the archives but nothing really answered my question completely. Basically I have a brand new built gsr block sitting here that has been balanced and blue printed along with a ctr crank pulley. So keep in mind the ctr crank pulley is balanced also.

If I keep the CTR Pulley, I wont be able to use my ac or power steering. I want to keep those options on my car since I'll still be commutting each day, and I don't have an extra daily beater car w/ these "options". I was reading on passwordjdm that they are selling a jdm itr crank pulley which is lighter than the gsr, and it says I can still run my ac and power steering.

Question is, can I run this jdm itr crank pulley on my built gsr? OR will I have to get the crank re-balanced? And if I run the ITR crank pulley, which belts do I buy..gsr or itr? Any difference between the jdm itr, us itr, and gsr crank pulleys? weight? size? benefits? pros & cons?

thanks in advance for the help. Just trying to figure things out before I sell the ctr crank pulley

Here's a pic of the ctr crank pulley I have


and here's a pic of a jdm itr crank pulley on passwordjdm

 

I use an ITR crankshaft pulley. You would use ITR belts.

The pulley should already be balanced....you can see the dimples that have been drilled to balance it. And, according to my engine builder, the crank pulley is already neutral balanced. I guess I can take his word for it.

The ITR alternator and AC sections are underdriven compared to the GS-R's crankshaft pulley. The diameters are slightly smaller. The PS pump drive section is the same diamter tho.

Reference post:
https://honda-tech.com/zerothread?id=509811

 

thanks for your response...very helpful.

anybody else care to chime in on this topic?

 

yeah, use the itr pulley. to use the ac and ps you dont really have a choice anyway. the balance on the crank pulley and crank are seperate so no worrys