melted poly engine mounts !
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
melted poly engine mounts !
Hi
Just as a warning.
A friend has a 66 big block vintage racing car.
He saw that his exhaust was somehow wrinkled ( headers ) and after extensive trouble shooting, he found his newly installed poly engine mounts melted and therefore the engine dropped a fair bit.
I thought that poly is top rocket age material ??
Any thoughts ?
See you Gunther :seeya
Just as a warning.
A friend has a 66 big block vintage racing car.
He saw that his exhaust was somehow wrinkled ( headers ) and after extensive trouble shooting, he found his newly installed poly engine mounts melted and therefore the engine dropped a fair bit.
I thought that poly is top rocket age material ??
Any thoughts ?
See you Gunther :seeya
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Re: melted poly engine mounts ! (WESCH)
yeah, it's pretty good stuff but won't stand up to extreme heat.
It's benefits are high tensile strenght, high burst strength and excellent tear resistance. Another benefit is ït's flex life, it can withstand millions of flexes without loss of properties, it's very chemical resistant and abrasive resistant too. It also has good "elastic memory"/recovery. It can withstand continuous exposure to heat of about 220F so if your headers are close by, wrap them.
[Modified by Twin_Turbo, 4:32 AM 3/7/2003]
It's benefits are high tensile strenght, high burst strength and excellent tear resistance. Another benefit is ït's flex life, it can withstand millions of flexes without loss of properties, it's very chemical resistant and abrasive resistant too. It also has good "elastic memory"/recovery. It can withstand continuous exposure to heat of about 220F so if your headers are close by, wrap them.
[Modified by Twin_Turbo, 4:32 AM 3/7/2003]
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Re: melted poly engine mounts ! (turtlevette)
do you continuously overheat the engine? :crazy: :lol: 220F or so is the softening point, it takes some more heat for a longer period to actually melt the urethane. Furthermore, if you overheat the engine the upper part, maybe 1/3 max will get that hot (cylinder heads and upper part of cylinder), the block itself will not get near as hot.
[Modified by Twin_Turbo, 10:41 AM 3/7/2003]
[Modified by Twin_Turbo, 10:41 AM 3/7/2003]
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
Re: melted poly engine mounts ! (Twin_Turbo)
YES, I do overheat my engine a lot. What do we really mean by overheat. The normal operting range is 180 to 230 degrees. Attending driving schools can push temps as high as 260 degrees. Most C3s overheat when pushed. I would rather go with a solid metal engine mount than go half way with a plastic one.
The point is that there are a lot of aftermarket parts out there that are engineered incorrectly and are not robust. See threads on braided SS brake lines, are you helping performance and reliability or hurting????
jim
The point is that there are a lot of aftermarket parts out there that are engineered incorrectly and are not robust. See threads on braided SS brake lines, are you helping performance and reliability or hurting????
jim
Abby Normal
Joined: Dec 2001
Posts: 53,343
Likes: 92
From: Press "2" for English
Re: melted poly engine mounts ! (WESCH)
yep, seen it. mine have partially melted too. too many track events.
turtlvette, if you want solid mounts, pay for shipping and i'll send you my set complete with trans mount.
turtlvette, if you want solid mounts, pay for shipping and i'll send you my set complete with trans mount.
