Anyone else have issues with IW's 8 rib OD Crank Pulley? - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

blackonblacksls · 12-20-2012, 06:18 PM

Happens on my car close to 600rwhp.

Happen on my cam only spray car Aswell.

I think once you start spinning high or getting up in the rpm too fast. It throws the

2010SSRSM6 · 12-21-2012, 12:10 AM

Quote:

Originally Posted by quincy speeder

Is he putting on new belts or just re installing the same one?

I've thrown mine a few times while smacking the rev limiter. The design on these new camaro's suck. My Vette has never thrown the AC belt.

The first two shredded so they got tossed. The third just ripped up a plug and wires so it will get replaced also.

He is just over 640rwhp.

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TornadoSS · 12-22-2012, 06:13 PM

Quote:

Originally Posted by 2010SSRSM6

The first two shredded so they got tossed. The third just ripped up a plug and wires so it will get replaced also.

He is just over 640rwhp.

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How irritating is that? I can hear Alex cussing now, lol! He mentioned it to me yesterday. Hope he gets it figured out. I will see if mine holds up with spray!

2010SSRSM6 · 12-23-2012, 01:19 AM

Do you have the OD pulley too? He is far from happy about it. I was considering it but not so much now.

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TornadoSS · 12-23-2012, 08:33 AM

Quote:

Originally Posted by 2010SSRSM6

Do you have the OD pulley too? He is far from happy about it. I was considering it but not so much now.

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I don't have one, I meant the ac belt. I do know someone here that had trouble with their IW balancer but cant remember what it was. I will try and find out.

wrp · 12-23-2012, 04:00 PM

My issue with the IW Crank pulley was similar. When we got it they had told us it didn't need to have the crank pinned. After a failure of the pulley itself they decided we should have pinned it. We have moved on but I would pin the pulley regardless of what anyone else says. Ultimately we melted the key.

2010SSRSM6 · 12-24-2012, 03:36 AM

He pinned the pulley. It looks like he may be moving on.

Hope this helps others save some $$$$ and headaches.

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blackonblacksls · 12-24-2012, 10:28 AM

It's not the pulley underdrive, overdrive and even stock are known to toss belts.

BLACK10 · 12-24-2012, 04:07 PM

Does he have the ac on when this happens? Is it hitting the rev limiter?

2010SSRSM6 · 12-24-2012, 05:56 PM

Quote:

Originally Posted by blackonblacksls

It's not the pulley underdrive, overdrive and even stock are known to toss belts.

I beat on mine with the stock pulley and haven't tossed a belt yet. (Knocking on wood). This one has cost $300 in damages and add in the $550 spent on the "upgrade" it's more trouble so far then it's been worth. Which sucks because the extra boost from the pulley is what he was going for.

With the OD crank pulley and a 3.6" front pulley, he has 2.5 pounds more boost then I do with the 3.8" pulley.

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2010SSRSM6 · 12-24-2012, 05:57 PM

Quote:

Originally Posted by BLACK10

Does he have the ac on when this happens? Is it hitting the rev limiter?

Not hitting the rev limiter but I'm not sure about the AC being on or not. It's been in the 60's to high 50's so I don't think it has been on.

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bucketobolts · 12-24-2012, 06:07 PM

So far so good. My belt is still hanging in there. Been careful not to bump the revlimiter but have put some miles on it when weather permits. I'm in the high 600 rwhp range with 10 psi and 3.875 driven pulley. Really like this combo would hate to swap out balancer.

blackonblacksls · 12-24-2012, 08:22 PM

Quote:

Originally Posted by 2010SSRSM6

I beat on mine with the stock pulley and haven't tossed a belt yet. (Knocking on wood). This one has cost $300 in damages and add in the $550 spent on the "upgrade" it's more trouble so far then it's been worth. Which sucks because the extra boost from the pulley is what he was going for.

With the OD crank pulley and a 3.6" front pulley, he has 2.5 pounds more boost then I do with the 3.8" pulley.

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how much power does your car make?

I never had a problem cam only, but cam only and spray I did.

And since installing my ls7 it seems to like to throw belts..

But i guess it cant be completely because of power because stock cars can toss them too.

2010SSRSM6 · 12-25-2012, 01:26 AM

Quote:

Originally Posted by blackonblacksls

how much power does your car make?

I never had a problem cam only, but cam only and spray I did.

And since installing my ls7 it seems to like to throw belts..

But i guess it cant be completely because of power because stock cars can toss them too.

I've got 640 to the wheels on the same dyno my buddy was on. We are within 8wrhp of each other. The only difference in our build is the OD crank pulley, he has a 3.6 to my 3.8" blower pulley and I have a Spectre CAI and he has Fastlanes.

I'd love to know for sure it was driving style causing the belts to fly off, but others have had this issue also and there isn't a tensioner to hold it in place so it has to be one of the two pulleys causing the issue, and the one changed seems to make the most sense.

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12-23-2012, 01:19 AM	#18
2010SSRSM6 Drives: My wife crazy with my C5 usage. Join Date: Apr 2009 Location: DFW Posts: 6,553 View My Garage	Do you have the OD pulley too? He is far from happy about it. I was considering it but not so much now. Sent from my iPhone using Tapatalk __________________ UNDER CONSTRUCTION......again......

12-24-2012, 03:36 AM	#21
2010SSRSM6 Drives: My wife crazy with my C5 usage. Join Date: Apr 2009 Location: DFW Posts: 6,553 View My Garage	He pinned the pulley. It looks like he may be moving on. Hope this helps others save some $$$$ and headaches. Sent from my iPhone using Tapatalk __________________ UNDER CONSTRUCTION......again......

12-20-2012, 06:18 PM	#15
blackonblacksls Drives: 2011 2ss/rs Join Date: Aug 2010 Location: houston Posts: 531	Happens on my car close to 600rwhp. Happen on my cam only spray car Aswell. I think once you start spinning high or getting up in the rpm too fast. It throws the

12-23-2012, 04:00 PM	#20
wrp Drives: 2004 QSM GTO Join Date: Sep 2010 Location: Texas Posts: 20	My issue with the IW Crank pulley was similar. When we got it they had told us it didn't need to have the crank pinned. After a failure of the pulley itself they decided we should have pinned it. We have moved on but I would pin the pulley regardless of what anyone else says. Ultimately we melted the key.

12-24-2012, 10:28 AM	#22
blackonblacksls Drives: 2011 2ss/rs Join Date: Aug 2010 Location: houston Posts: 531	It's not the pulley underdrive, overdrive and even stock are known to toss belts.

12-24-2012, 04:07 PM	#23
BLACK10 Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,585	Does he have the ac on when this happens? Is it hitting the rev limiter?

12-24-2012, 06:07 PM	#26
bucketobolts Drives: 2010 2SS Join Date: Jan 2011 Location: Salisbury, NC Posts: 149	So far so good. My belt is still hanging in there. Been careful not to bump the revlimiter but have put some miles on it when weather permits. I'm in the high 600 rwhp range with 10 psi and 3.875 driven pulley. Really like this combo would hate to swap out balancer.