That's an insane amount of dust
Griptec Supercharger Pulley
- Thread starter SVTdreamin04
- Start date
That's an insane amount of dust
Yup, one reason why I don't use the gatorbacks anymore.
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I've been real happy with my Griptec pulley. Call them direct and the owner Andrew usually answers the phone. Been running a KB pulley done by Griptec for close to 7-8 months. Belt dust is a little more apparent but nothing terrible. I use the HD Gates belts mainly cause they're relatively cheap compared to the RPM. Change them out every year anyway. I put roughly 5k miles a year on my car.
I havent tried to contact them via email but on the phone they were great. They were just starting into procharger stuff when I ordered mine and I had some issues (I ordered against procharger guidelines but within my past experience). They didn't bat an eye, they updated their design and shipped me out a new one without hesitation
You are not going to snap the RPM belt unless you are just silly with how tight you set it. It's EASY to get it correct and especially easy with the whipple tensioner. If I can do it YOU can do it. And you'll be thrilled with the near zero dust.
Maybe I'll try it this year, running such a small pulley gets tricky and more prone to belt slip obviously.
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My setup is pretty much like yours....aside from the different 2.6 upper composition....and mine runs with no slip.
I have seen these RPMs priced all over the map, some places trying to get as much as $80 for that belt. I got mine from RockAuto and it's reasonable, especially considering I haven't had to change it going into year 3. $44.99 is a bargain for 3 years. I was spending a lot more than that swapping out regular gates or gatorbacks yearly.....and cleaning all that dust.
GATES K080751RPM Belt | RockAuto
The difference is I'm running a small 2.6 with carbonite coating. I'm not so worried about prices on belts. I'm more concerned about splitting a belt and being left stranded.
There is no devinitive answer on what is to "tight".
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The answer is....you set it up in accordance with factory pressure guidelines. The factory arm has an indicator tab and you set it dead center in the marked range....just like an 8psi eaton rolling off the factory line circa 03/04. People have become so accustomed to pulling the snot out of the arm looking for wrap....and in many cases mutilating the stop tab all together....people have forgot what the factory recommendation was.
You might have an aftermarket main arm now, I can't remember exactly. If you have the thumper, does it have a tension indication tab? Bottom line.....set dead center on the range with initial setup. 99.9% it's going to work just fine.
Yes I'm running a thump tensioner and there is NO tension indicator.
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I have had a gates rpm belt for 2 years now. No issues. Tension is just over 50% mark.
2004 Cobra 2.9 Whipple
2004 Cobra 2.9 Whipple
Really. I only used Gatorback belts, with a 2.8 RR upper, on my old '03 Cobra. I didn't over-tighten the belt, with the factory indicator tab set dead middle. I got over 7K miles on my Gatorback, and could have gone longer. And minimal belt dust.
I had a phone conversation with Richard Reichard back in the day about his pulleys. A few guys said his pulley's were shredding belts. He designed his pulley to grip well without shredding belts. My own application confirmed what he stated and that they did a superior job. No doubt the majority of shredded belts were due to pulley installation issues (misalignment).
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Not sure, but there could be an ever slight difference trying to wrap 22psi on a whipple versus 12psi on an eaton, even with alignment perfect. That's 83% more boost. More heat produced, faster deterioration, more stretch. Also, my RR is mirror polished so belt dust shows up quite apparent. The as delivered satin finish on an RR would hide it much better.
I actually liked the gatorbacks....I preferred them over the regular or HD gates.....until the RPM got released. Now there is no other belt that I would run.
Would this be about the halfway point for stock tensioner?
Looks halfway to me from this angle
2004 Cobra 2.9 Whipple
2004 Cobra 2.9 Whipple
That could definitely be possible. Every configuration is different. The reason that I switched to a Gatorback early on was the Gates belts would glaze (and chirp) with 2 weeks of installation after switching to the RR pulley. Someone recommended Gatorback and the issue disappeared. The subtle whistle was a side benefit. LOL.
I've really not familiar with the Gates RPM belt. Is it equal in longevity to the Green Stripe? Better?
After reading this entire thread, the only thing I got out of it is, I need to change the blower belt on my cobra. It's the same one I put on in 2007. Only 7k miles since then. But now I'm kinda embarrassed since I haven't changed it, and y'all are changing every year.
You don't necessarily have to change it out. Depends on your configuration, including tightness. I would bet, though, that the average person changes their blower belt annually.
Yeah Fastback I've never really had to mess with belts, until now. Now that I have this tiny upper pulley I'm losing boost in the upper RPM's.
It's a little difficult to tell with that black paint.....but I believe that is right in the zip code of 50%. I think you are fine there to give the RPM a whirl
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