This is just some information I figured I would share for some of the people out there who are looking for upgraded belts for their SC's.

While I don't have an upgrade avaible, through my research I have found what you can do to get special belts made.

I believe that booger posted a question a while back about getting upgraded rear belt for his vortech so that is kinda what spurred this.

Basically here is what I have found out:

It is possible to get straight belt media from Gates in various thicknesses, widths, tooth profiles etc.

If you had all of the required specs and called up Gates you should be able to purchase straight belt media to the specs you want. Gates will not do custom sized belts. However, a company called York industries will. They are able to take the straight media and join it properly (as with any belt you buy) in any length you need. I believe they are also able to change the widths so if Gates had some really thick belts that were too wide you could get them trimmed.

I thought this would just be some good FYI for those who try to go outside the box on their cars.

 

Good info. Maybe Booger will be the first test subject.

 

I could actually use a slightly smaller cog belt .On of the three I have . I need one 20 mil. wide....780 mil. long . My 800 mil cog belt is just a little long. Its a Gates Poly-chain belt . Ive called them and went thru another company that deal in them and nothing close to what I need .

 

Could you give me a link or number for York Industries ?

Thanks Bill

 

http://www.york-ind.com/

If you can get the poly-chain in the right size from gates or maybe even one that is way larger than you need and can be cut and re-connected they can most likely take care of it for you.

 

Thanks !!!!!!!!!!

 

Keep us updated Boog!

 

Any updates Booger as to the special cog belts?

 

No..I havent called them yet . Like you said , you would have to buy 10 of them to get them to make them . No one be me would need them . And Im also wondering about strength of the belt . But calling them will answer that .

 

The strength of the belt will be the same as that of a normal Gates belt. They use the same processes as Gates does except the specialize in custom applications where as Gates will not touch custom applications.

 

The strength would be the same, but since there's no give, they'll snap easier. I don't remember the belt that Dsport was using, but wasn't it some sorta steel/kevlar reinforced belt? And it snapped all the time after 7000 rpms - at least with a lot of load from a T-trim

 

I think some of the reason they had snapping issues was also due to the RPMs they were going for.

 

yeah I think so too, but yet there's supercharged cars that rev up to 8500 rpms like the exige S etc or the aftermarket NSX superchargers that rev up to 8000 rpms and I don't think they usually snap belts every other few times they run to redline. Then again they're not using cog pulley setups

I think the really high boost pressure in Dsport's case from using a blower that at least some people (not just me) think is too big for the stock 3.5L engine made it harder to turn and possibly harder on the belts because of that -along with not having any give

The ATI kit for the Z/G has snapped belts for several people who have tried to push for more power. I usually hear about the vortech belt slipping, but never actually snapping - though wouldn't be suprised if it's happened to someone somehow. I don't think it's ever happened very often

 

The belt used by the DSport car and my car is a Poly-Chain..By Gates . The belt used on the blower it self...for the stock kit and mine , is a Gates Poly-Grip . The Poly-Chain seems likes its a plastic instead of a rubber type like the Poly-Grip . I have had the rpm's to 6790rpm with no problems and dont think I will . At least to redline anyway , and thats all I want . The T-trim with a serp belt works great till the belt will not hold any longer . As soon as I get the gearing right with the cog system to give me the right boost Im looking for , basicly the same with a serp belt but carry it to redline...16 to 18psi . I will have a High whp Vortech but with out over boosting like the 23psi that it makes now does .

 

Yes...running a smaller SC would make it easier to run more rpm . But if you want to run more rpm with a bigger blower , you must increase the width and thickness of the belt . With this set up , a 20 mil. wide belt is the best you can do . Look at big twin screw blowers on drag motors . That belt is 4 to 6 inches wide .

I dont believe the blower is to big . But taking the blower to its limits is to much for this motor . Keeping the blower to the 16 to 18psi range at redline is going to be perfect

You will never hear of a serp belt snapping trying to raise boost . Remember Ive tried , and all it does is slip .

Sentry...you need to stop trying to figuring every thing out on paper . It doesnt always work that way...as you have found out .

 

Timing belts are made using continous cording. You cannot change the length by cutting and refastening. The width can be reduced but not the length.

 

^
Trust me when I say they can. We use them even though it not for timing but for a different application in automotive.

 

Do you have a link to some one advertising shortening?

 

Yes. If you read this thread that is the whole purpose of it. York Industries specializes in making belts from belt media i.e. unconnected material. With that in mind I don't see why they could not take a long belt and shorten it since once you cut it you essentially have belt media.

 

It isn't going to happen.