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JRSC belts & pulleys: please discuss it here

49493 Views 819 Replies 63 Participants Last post by  iamsyko
I know a lot of us JRSC guys having or had problems with our belts and pulleys and a lot of time we hijacking other threads because of it, so I thought it was a good idea to start up on a thread just about jrsc belts and pulleys. The thread is not only for current jrsc peeps but also for the newbies as well so they won't get us frustrated asking the same question over and over again.

I'll start off with one question, I read around and found a member who is using a goodyear 070775 belt which is 7 rib and 77.5 inches long. I tried a dayco belt that was 77.5 long and it wasn't even anywhere close to fitting onto the 3.4 pulley. The dayco 78.9 belt fit extremely well for the purpose. What I want to know is that anyone else tried the goodyear 77.5 long on a 3.4 pulley or is it because different makers make belt a little bit different in length.

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Can someone please help me out !!

I have a 08 si with the jrsc which this kit is identical to the rsx kit ( ) My question is I need to know the belt size on this kit. I know its a 3.2 inch pulley and 7 ribbed but I dont know the s/c belt size ???
Have you called Moss to ask?

Im calling tomorow but this has been on my mind since Friday after they were closed !!!! And im going nuts trying to figure this out and if you go on there site they dont even list belts for my car kinda odd
Have you tried 8th Gen Civic or any of those other K-motor sites? Maybe some of those guys have your supercharger installed.
Im on 8thgen all the time but 99.9 percent of any s/c guy has the comptech kit. They are not many people with the JR kit that I know of in an 06 + civic si. And I have also took a look at to see if anything was there as well. Came up empty. All I have seen if they did have my kit but a 3.4 in pulley or a 3.6 even 3.8 but nothing about the belt size on a 3.2 inch. And I figred it would be different size belt if its on a different size pulley.
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