engine and drivetrain high performance motor mounts

[inkatouring]

I'm wondering if people have used IE's motor mounds or Kormans or the such and what kind of experiences you've had.

And, if not, what mounts do you use with your high performance engines?

[Guest Anonymous]

I'm wondering if people have used IE's motor mounds or Kormans or the such and what kind of experiences you've had.

And, if not, what mounts do you use with your high performance engines?

You really need to be more specific when you refer to "high performance." I have used urethane with mixed results in both M10 and M30 engines with slightly modified engines. The 4 has a tendency to vibrate much more than the 6 and I found it too annoying.

I do remember eventually using only the yellow trans mount. Although I did try it with one urethane mount (exhaust side). I was concerned about the strength of the metal support where the left mount bolts to the subframe. I have never cracked one, but would expect the urethane adds additional stress. I would consider adapting the hydroelastic mount from the newer E30's. And, as you no doubt know, the M10 round intake side mount fits the 114. If it can handle the 6, why not the 4? (That's what I currently run.)

If you were adventurous, I have seen some encase their original rubber mounts with devcon urethane. It comes in different strengths. Could be the best of both worlds or a mess.

Best I can think of at the moment.

[rover1]

Ruben is right be carefull on the driver side motor mount if you go poli euro i have cracked the fork 2wice on mine and finally had a custome extra thick fork welded in.

[hcestoni]

Stock ones are the best. The only thing I got from the Ireland urethane ones was more interior vibration, no real perofrmance gains.

But on the drivers side urethane one the metal support plate recently ripped out leaving the engine to flop around, the mount was a little over 2 years old.

[inkatouring]

You really need to be more specific when you refer to "high performance."

Ah, but I was intentionally vague to get as wide as possible responses.

Thanks for the thoughts so far.

[Arshloch]

there are strut braces that have a support arm for the engine to reduce the flop. That might be a good alternative.

[RussTii]

Haven't had the engine pop out of the mounts on a rough start in years since I changed to the Poly IE mounts. Yes, there is vibration but I'm usually more concerned with staying on course, not missing a shift, brake lockup, etc.

[jgerry2002]

I use IE's poly mounts in my tii. Thought I had horrible NVH problems until I realized it was my exhaust that was resting on the subframe.

Once I moved it and things quieted down, compared to stock, I've only been able to detect a very very slight increase of vibration at low rpm.

Perfect for a street/track car where I don't want stuff to move.

Though I am putting a set in my '76 too, which is only a street car at this point.

[mtriple]

I am using these for a year now with no issues. They are IEs

http://store.nexternal.com/shared/StoreFront/default.asp?CS=ireland&StoreType=BtoC&Count1=556331813&Count2=473472237

hamada

[Guest Anonymous]

I am using these for a year now with no issues. They are IEs

hamada

And you bought them just because you heard they were resistant to chronic oil leaks from a newly rebuilt engine? lol

Or was it vanity? They are prettier and coordinate well with . . . Bristol?!

[hanksjim1]

Sorry to take this thread on a tangent, but Arshloch, can you tell me what kind of brace is in the scratchbuilder picture?...I also have a car with out the airplenum and that seems like a great way to still use the stock hood latching mechanisms.

[dp]

What Ruben said, the big 6 mounts are (IMO-2) the best, they do not transmit vibration like the other options mentioned (poly, rigid mount, etc) and being much larger are MORE efficient at damping than the stock mounts and they are MUCH more durable. If you go with the stock rubber 6-cylinder motor mounts they will be the last motor mounts you have to buy for your '02!

While I'm at it, the 6-cylinder green trans mount is the best for our cars too, for all the reasons stated above

[Guest]

DP,

any part numbers for those 6 cylinder mounts???

TIA

[dp]

look 'em up on real OEM application would be...oh, how about '72 Bavaria

(remembering to unclick the notify box)

[inkatouring]

What Ruben said, the big 6 mounts are (IMO-2) the best, they do not transmit vibration like the other options mentioned (poly, rigid mount, etc) and being much larger are MORE efficient at damping than the stock mounts and they are MUCH more durable. If you go with the stock rubber 6-cylinder motor mounts they will be the last motor mounts you have to buy for your '02!

While I'm at it, the 6-cylinder green trans mount is the best for our cars too, for all the reasons stated above

Having looked at the six mounts on realoem, I'm curious if/how the passenger side mount form a six works on the m10???