8K RPM chains - ZR-1 Net Registry Forums

LGAFF · 10-18-2009

These guys/Cloyes do IRL car chains....wondering if they can make an 8K chain for us? Sent them a note......are the tensioners able to hold up at 8K? Better yet, they are in our back yard.

In 2002, Cloyes purchased the assets of Dynagear, our largest competitor in the aftermarket, located in Downers Grove, IL. We consolidated some of their personnel and also their manufacturing capabilities into our new chain facility in Naperville, IL, where we manufacture all of our chain products. We continue to operate and market under both the Cloyes and Dynagear brand names throughout the US and global aftermarket.

Ccmano · 10-18-2009

Interesting thought, the next question is, can the valve springs handle 8k rpm? Seems like building the chain would be the easy part.
H

LGAFF · 10-18-2009

True, what other weak points would there be? Maybe a question for Graham Behan(sp)

Aurora40 · 10-19-2009

Quote:

Originally Posted by Ccmano

Interesting thought, the next question is, can the valve springs handle 8k rpm? Seems like building the chain would be the easy part.
H

It wasn't the easy part for the LT5, according to HotB. Apparently the routing angles are kinda sharp in order to keep the width of the engine down.

Bob G · 10-19-2009

I would Like New Chains 8000 Would be a plus

cward · 10-19-2009

You might try to find out what chains Fastlane used. He was shifting well over 8K. I was told by Graham that stock chains and lifters were good to 8K. I had mine to 7800 with no mods to chains or lifters. Pete is probably shifting over 8K with all his lightening of the internal parts. Going that high is useless without extensive porting and polishing with headers and very low restriction exhaust and probably cams. Just my opinion.

Curtis

flyin ryan · 10-19-2009

Quote:

Originally Posted by cward

Going that high is useless without extensive porting with headers and very low restriction exhaust and probably cams. Just my opinion.

Curtis

Your opinion is right on.

Pete · 10-19-2009

Lee,if you wanna do it for durability and keeping the prices low then it would be good.
Don't make the main chain we have a low cost replacement for that.

I have my rev limiter set at 7700,
i almost always bounce of it in the burn out box,
shift light set at 7200,scanner shows me 7400 by the time i react to the shift light.
peak power comes in @ 6800-6900,

67k miles with no issues,knock on wood.

Curtis, my buttom end has never been apart all stock.

If you make some i'm in for a set.
Pete

P.S.
longer chains, taller deck

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LGAFF · 10-19-2009

Response from Cloyes....

Lee:

All parts made are based off volume. We generally donâ€™t take on one piece jobs. If you have a project in the making with an annual volume it will be considered.

Thanks,

Tech

10-18-2009	#1
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	8K RPM chains These guys/Cloyes do IRL car chains....wondering if they can make an 8K chain for us? Sent them a note......are the tensioners able to hold up at 8K? Better yet, they are in our back yard. In 2002, Cloyes purchased the assets of Dynagear, our largest competitor in the aftermarket, located in Downers Grove, IL. We consolidated some of their personnel and also their manufacturing capabilities into our new chain facility in Naperville, IL, where we manufacture all of our chain products. We continue to operate and market under both the Cloyes and Dynagear brand names throughout the US and global aftermarket. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-18-2009	#2
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,843	Re: 8K RPM chains Interesting thought, the next question is, can the valve springs handle 8k rpm? Seems like building the chain would be the easy part. H

10-18-2009	#3
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: 8K RPM chains True, what other weak points would there be? Maybe a question for Graham Behan(sp) __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-19-2009	#5
Bob G Join Date: Dec 2005 Location: Huntley IL Posts: 170	Re: 8K RPM chains I would Like New Chains 8000 Would be a plus

10-19-2009	#6
cward Join Date: Dec 2004 Location: Luling, TX Posts: 97	Re: 8K RPM chains You might try to find out what chains Fastlane used. He was shifting well over 8K. I was told by Graham that stock chains and lifters were good to 8K. I had mine to 7800 with no mods to chains or lifters. Pete is probably shifting over 8K with all his lightening of the internal parts. Going that high is useless without extensive porting and polishing with headers and very low restriction exhaust and probably cams. Just my opinion. Curtis

10-19-2009	#8
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,667	Re: 8K RPM chains Lee,if you wanna do it for durability and keeping the prices low then it would be good. Don't make the main chain we have a low cost replacement for that. I have my rev limiter set at 7700, i almost always bounce of it in the burn out box, shift light set at 7200,scanner shows me 7400 by the time i react to the shift light. peak power comes in @ 6800-6900, 67k miles with no issues,knock on wood. Curtis, my buttom end has never been apart all stock. If you make some i'm in for a set. Pete P.S. longer chains, taller deck . . . . . . . . __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage Last edited by Pete; 10-19-2009 at 01:55 PM.

10-19-2009	#9
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: 8K RPM chains Response from Cloyes.... Lee: All parts made are based off volume. We generally donâ€™t take on one piece jobs. If you have a project in the making with an annual volume it will be considered. Thanks, Tech __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359