Whiteline Roll Center Adjust carnage.....
Sep 8, 2009, 08:06 PM
#16
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G’day everyone,
black95tt, understand your concern and I wouldn’t be happy about driving without a fresh boot on that ball joint for too long.
Its a tough one to deal with as our original design kit for this application used high temp silicon for the boot material in response to issues with OE or stock boots. The silicon has a high temp resistance compared with stock however it’s a little fragile and we were getting complaints about tearing when fitting etc.
We then changed over to a higher spec synthetic rubber that has a higher operating temp resistance than stock and is much more durable than silicon. That is our current material spec but unfortunately the design of the EVO front makes this a high heat stress application when racing and particularly when removing stock heat shields.
Jeff_Jeske, you’re spot on with your comments and we experienced same when preparing our EVO 8 development car back in 2004. The braking performance suffered if the heat shields were left on and most EVO’s used a cloth (Kevlar weave or similar) shield wired on to the outside of the tier rod and ball joint boot. I believe this is still used on racing EVO’s to this day.
No doubt a brake ducting solution would work well here. Let us know is there is anything more we can do.
Cheers
Whiteline Jim
www.whiteline.com.au
black95tt, understand your concern and I wouldn’t be happy about driving without a fresh boot on that ball joint for too long.
Its a tough one to deal with as our original design kit for this application used high temp silicon for the boot material in response to issues with OE or stock boots. The silicon has a high temp resistance compared with stock however it’s a little fragile and we were getting complaints about tearing when fitting etc.
We then changed over to a higher spec synthetic rubber that has a higher operating temp resistance than stock and is much more durable than silicon. That is our current material spec but unfortunately the design of the EVO front makes this a high heat stress application when racing and particularly when removing stock heat shields.
Jeff_Jeske, you’re spot on with your comments and we experienced same when preparing our EVO 8 development car back in 2004. The braking performance suffered if the heat shields were left on and most EVO’s used a cloth (Kevlar weave or similar) shield wired on to the outside of the tier rod and ball joint boot. I believe this is still used on racing EVO’s to this day.
No doubt a brake ducting solution would work well here. Let us know is there is anything more we can do.
Cheers
Whiteline Jim
www.whiteline.com.au
Sep 15, 2009, 12:25 AM
#17
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G'day everyone,
Thanks for the supportive comments, love to help.
aeroweenie, I would rate our boots as a higher spec product than the stock items with respect to heat resistance. Its just that we're still talking in the 100's of degrees for a boot material versus a brake rotor that can run at 650 C plus and that’s too hard for anything to deal with.
I would suggest shielding for anyone that’s racing an EVO for the reasons mentioned. Regardless of how careful you are and how much better our material may be, one day you’ll need to raise the front quickly after a race or stop to check the hot tyre temps/pressures and bingo, you’ve cooked those boots.
Hope that helps.
Cheers
Whiteline Jim
www.whiteline.com.au
Thanks for the supportive comments, love to help.
aeroweenie, I would rate our boots as a higher spec product than the stock items with respect to heat resistance. Its just that we're still talking in the 100's of degrees for a boot material versus a brake rotor that can run at 650 C plus and that’s too hard for anything to deal with.
I would suggest shielding for anyone that’s racing an EVO for the reasons mentioned. Regardless of how careful you are and how much better our material may be, one day you’ll need to raise the front quickly after a race or stop to check the hot tyre temps/pressures and bingo, you’ve cooked those boots.
Hope that helps.
Cheers
Whiteline Jim
www.whiteline.com.au
Sep 16, 2009, 01:24 PM
#20
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Googled it. Found a bunch of stuff here, for example: http://www.hrpworld.com/index.cfm?fo...ction=category
l8r)
l8r)
Sep 16, 2009, 01:56 PM
#21
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the shielding/wraps will eventually fail. Best bet is to make an aluminum heat shield like this one:
its a corvette rod end but the principal is the same. I believe its just .062 sheet aluminum from your local home improvement store.
its a corvette rod end but the principal is the same. I believe its just .062 sheet aluminum from your local home improvement store.
Sep 16, 2009, 03:34 PM
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I wonder if thats legal to do in IT class...
Sep 28, 2009, 08:55 PM
#27
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G’day everyone,
black95tt, understand your concern and I wouldn’t be happy about driving without a fresh boot on that ball joint for too long.
Its a tough one to deal with as our original design kit for this application used high temp silicon for the boot material in response to issues with OE or stock boots. The silicon has a high temp resistance compared with stock however it’s a little fragile and we were getting complaints about tearing when fitting etc.
We then changed over to a higher spec synthetic rubber that has a higher operating temp resistance than stock and is much more durable than silicon. That is our current material spec but unfortunately the design of the EVO front makes this a high heat stress application when racing and particularly when removing stock heat shields.
Jeff_Jeske, you’re spot on with your comments and we experienced same when preparing our EVO 8 development car back in 2004. The braking performance suffered if the heat shields were left on and most EVO’s used a cloth (Kevlar weave or similar) shield wired on to the outside of the tier rod and ball joint boot. I believe this is still used on racing EVO’s to this day.
No doubt a brake ducting solution would work well here. Let us know is there is anything more we can do.
Cheers
Whiteline Jim
www.whiteline.com.au
black95tt, understand your concern and I wouldn’t be happy about driving without a fresh boot on that ball joint for too long.
Its a tough one to deal with as our original design kit for this application used high temp silicon for the boot material in response to issues with OE or stock boots. The silicon has a high temp resistance compared with stock however it’s a little fragile and we were getting complaints about tearing when fitting etc.
We then changed over to a higher spec synthetic rubber that has a higher operating temp resistance than stock and is much more durable than silicon. That is our current material spec but unfortunately the design of the EVO front makes this a high heat stress application when racing and particularly when removing stock heat shields.
Jeff_Jeske, you’re spot on with your comments and we experienced same when preparing our EVO 8 development car back in 2004. The braking performance suffered if the heat shields were left on and most EVO’s used a cloth (Kevlar weave or similar) shield wired on to the outside of the tier rod and ball joint boot. I believe this is still used on racing EVO’s to this day.
No doubt a brake ducting solution would work well here. Let us know is there is anything more we can do.
Cheers
Whiteline Jim
www.whiteline.com.au
Last edited by EvImVictim; Sep 28, 2009 at 09:07 PM.
Sep 30, 2009, 08:10 PM
#28
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The new Whiteline roll center kits have a much heavier black rubber boot for the ball joints but you still need some kind of heat shield, if anybody needs a set of the stock backing plates PM me. The stock Mitsubishi rubber covers will fit the Whiteline kit