[mweisdorfer]

Originally Posted by FCobra94

No one is telling you that they will, they won't, they have, or they haven't...just that they have the propensity to. Some peeps feel comfortable taking that gamble, some don't.

Not sure why anyone would run any poly mount on the turbo side without a heat blanket, sock, etc. on it either, but that's just me.

Ok. This is why they won't melt.

They use a ceramic, thermal plate on the passenger side mount called PEEK.

Here is a write up on PEEK material :


PEEK (Polyetheretherketone) is known throughout the machined parts industry as one of the toughest, highest performing engineering plastic materials on the market today. PEEK is a high-performance thermoplastic that is tough, durable, firm, and creep resistant. It offers excellent thermal, chemical, and hydrolysis resistance as well as excellent resistance to abrasion and dynamic fatigue. Its ability to run at high continuous temperatures up to (480º F) without permanent property degradation along with stable electrical properties makes PEEK an excellent alternative to fluoropolymers in aggressive environments. PEEK has also been shown to exhibit very low smoke and toxic gas emission when exposed to flame.

[Torgus]

Originally Posted by FCobra94

No one is telling you that they will, they won't, they have, or they haven't...just that they have the propensity to. Some peeps feel comfortable taking that gamble, some don't.

Not sure why anyone would run any poly mount on the turbo side without a heat blanket, sock, etc. on it either, but that's just me.

Exactly.

I feel ok running the revshift poly on the turbo/passenger side but it has the thermal sock and with my top mount the turbo manifold and downpipe does not come close to the MM.

If I wanted to run poly on twins I would probably make a heatshield for the MM. Better safe than sorry.

Originally Posted by mweisdorfer

Ok. This is why they won't melt.

They use a ceramic, thermal plate on the passenger side mount called PEEK.

Here is a write up on PEEK material :


PEEK (Polyetheretherketone) is known throughout the machined parts industry as one of the toughest, highest performing engineering plastic materials on the market today. PEEK is a high-performance thermoplastic that is tough, durable, firm, and creep resistant. It offers excellent thermal, chemical, and hydrolysis resistance as well as excellent resistance to abrasion and dynamic fatigue. Its ability to run at high continuous temperatures up to (480º F) without permanent property degradation along with stable electrical properties makes PEEK an excellent alternative to fluoropolymers in aggressive environments. PEEK has also been shown to exhibit very low smoke and toxic gas emission when exposed to flame.

That plate goes on the mounting point of the MM to the bracket that then connects to the engine. It really does not do anything. The heat does not come from that mounting point. Even if it did the stud in the MM and nut on the other side of the bracket with no PEEK plate would conduct thermally just fine. No other MM has a PEEK plate and they are just as reliable or unreliable.

The heat comes from the red hot downpipes that an inch away. Not the MM bracket.

The guy who melted his did so on the race track I believe. You generate a lot more heat at the track than a few WOT pulls on the highway.

I don't understand why you are defending this product so vehemently. It could melt(as can any poly mount with twins on an n54) not that yours will. The evidence you asked for was then given to you showing a melted turner MM failure with a whole thread devoted to it.

BMW knows the downpipes are so damn close to the MM they put their own tiny heatshield on the factory subframe.

Originally Posted by nicky dj

At least go for the no name brand oem IS mounts

I have an OEM 'is' mount in there right now and it isn't all that much different from stock, if any. These mounts are hardly an upgrade.

Currently has ~60k miles on it and it started to feel sloppy for at least the last ~20k miles. I got it back when they were cheap and I still consider it a waste of time/money.

[mweisdorfer]

Originally Posted by Torgus

Exactly.

I feel ok running the revshift poly on the turbo/passenger side but it has the thermal sock and with my top mount the turbo manifold and downpipe does not come close to the MM.

If I wanted to run poly on twins I would probably make a heatshield for the MM. Better safe than sorry.

That plate goes on the mounting point of the MM to the bracket that then connects to the engine. It really does not do anything. The heat does not come from that mounting point. Even if it did the stud in the MM and nut on the other side of the bracket with no PEEK plate would conduct thermally just fine. No other MM has a PEEK plate and they are just as reliable or unreliable.

The heat comes from the red hot downpipes that an inch away. Not the MM bracket.

The guy who melted his did so on the race track I believe. You generate a lot more heat at the track than a few WOT pulls on the highway.

I don't understand why you are defending this product so vehemently. It could melt(as can any poly mount with twins on an n54) not that yours will. The evidence you asked for was then given to you showing a melted turner MM failure with a whole thread devoted to it.

BMW knows the downpipes are so damn close to the MM they put their own tiny heatshield on the factory subframe.

Ok. So, let's agree that DD or running a few WOT pulls in 3rd or 4th gear, in all Likelihood, is not going to melt a Poly Engine Mount. Maybe if you live in the south or SW part of the country where it's 100 plus degrees 300 days a year etc., you might be at risk for melting a Poly Engine Mount. Basically, extreme conditions for a DD's driving environment should make you think twice about a Poly Engine Mount.

Tracking the car will absolutely increase the chances tremendously of melting a Poly engine mount. I would agree on that.

[Torgus]

Originally Posted by mweisdorfer

Ok. So, let's agree that DD or running a few WOT pulls in 3rd or 4th gear, in all Likelihood, is not going to melt a Poly Engine Mount. Maybe if you live in the south or SW part of the country where it's 100 plus degrees 300 days a year etc., you might be at risk for melting a Poly Engine Mount. Basically, extreme conditions for a DD's driving environment should make you think twice about a Poly Engine Mount.

Tracking the car will absolutely increase the chances tremendously of melting a Poly engine mount. I would agree on that.

Agree 100%