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JRSC belts & pulleys: please discuss it here

49527 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.

TT
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The upper or lower alternator brackets that comes with the RSX Type S JRSC kit would have to be redesigned in order to work for the Base RSX JRSC affectively!!!

Here is why:
Picture 1
I needed to remove the alternator off the car to example the upper and lower brackets. The only way to take the alternator out of the car once the supercharger manifold has been installed on top of it is to take off the front bumper and remove the right side passenger headlight. The alternator would have to be manuvered and slide out through the empty space of the removed headlight. Taking out the wiring harness on the alternator is a bitch because space is so limited.

Picture 2
The upper alternator mount has cracked. The lower bracket can be seen once the alternator is removed. The lower bracket was installed but the two bolts holding the alternator in place had broken off. They did not unscrewed themselves, they broke across the diameter of the bolts.

HERE IS THE PROBLEM!!!
Picture 3,4,5
I followed the exact installation instruction for the alternator brackets according to the Jackson Racing install manual. New bracket that Keith sent me were installed. The alternator was bolted onto the lower bracket and sits perfectly flat. THERE IS A GAP SPACE OF ABOUT 1 CENTIMETER BETWEEN THE ALTERNATOR AND THE UPPER BRACKET MOUNT. I don't know how the previous installer of the kit managed to close the gap between the alternator and the upper bracket mount. If I force the bolt to close the gap then that would put alot of stress on the two lower bolts which might be the reason why they broke over time. The upper bolt seems to be beefier and made of a stronger material than the two lower bolts. (Using old cracked upper alternator mount as an example. Even though it's cracked the thickness should be the same as an uncracked one)
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I installed the new brackets and put in 4 flat washers 5/16" (8M), 7,93mm between the alternator housing and the upper alternator bracket mount. Everything lined up perfectly.
5
Look how thick and strong Comptech's belt tensioning scissor brackets are





Granted these last few pics are from the TSX but they're the same exact design!!!


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i want that tensioner RIGHT NOW... as long as it fits the JR kit obviously :)
lanman2000 said:
i want that tensioner RIGHT NOW... as long as it fits the JR kit obviously :)
Thought you were selling your car?
no bites yet.
i VieTEC said:
I installed the new brackets and put in 4 flat washers 5/16" (8M), 7,93mm between the alternator housing and the upper alternator bracket mount. Everything lined up perfectly.
Is that a metal idler pulley?
ocorzo said:
Is that a metal idler pulley?
I have custom pulleys and spacers. My base has different belt and pulleys alignment than the Type S.
You have to remember that JR's belt tensioner is also made out of steel. They didnt start using aluminum until it went to production.
alphaSSmale said:
You have to remember that JR's belt tensioner is also made out of steel. They didnt start using aluminum until it went to production.
that was such a dumbass move.
They probably realized the cost benefit to using aluminum instead of steel but didnt forsee so many faulty parts. I dont know the price difference when machining aluminum instead of steel but I am sure its not that much. At the very least that could have put a steel insert into the tensioner. Thats what I will be doing soon.
The new tensioner bracket is out! Keith shipped one out to the guys who installed my SC because I took it to some hacks who said they could replace a belt when I shredded the first one. :firemad: me off because they put washers where they don't belong and stripped out that allen head bolt, and probably are the one's who chipped my crank shaft pulley. So hopefully all wil go well! Once again, Keith come through! :thumbsup:
chk said:
The new tensioner bracket is out! Keith shipped one out to the guys who installed my SC because I took it to some hacks who said they could replace a belt when I shredded the first one. :firemad: me off because they put washers where they don't belong and stripped out that allen head bolt, and probably are the one's who chipped my crank shaft pulley. So hopefully all wil go well! Once again, Keith come through! :thumbsup:
i just talked with Keith on the phone and he is shipping mine next week. :thumbsup:

JR customer service is great!
Damn it I talked to him yesterday and I could have asked him about the bracket. I would love to get one. Post some pics when you get it. I will contacting Keith to get mine next week.

Jamie
I called but Keith was out to lunch. The sales dude knew nothing about a new tensioner. Damn him! :) Anyway hopefully Kieth calls me back soon....
jsfwds2k said:
Damn it I talked to him yesterday and I could have asked him about the bracket. I would love to get one. Post some pics when you get it. I will contacting Keith to get mine next week.

Jamie
That's a can do :thumbsup:
Post pictures of all angles when you install them please. I was supposed to get one too and this was two weeks ago. Yay new tensioner for everyone!!!
I Want A New Set Too Damn It!!!
i'll take a shitload of pics.. you know me :)
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