Motor mount replacement interval?

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Slownrusty
Posts: 617
Joined: Wed Apr 24, 2019 2:22 pm
Location: Houston, TX

Re: Motor mount replacement interval?

Post by Slownrusty »

@wattsmonkey- nailed it. Exactly my experience and observations.
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Sbeaud
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Location: Okahumpka, Florida USA

Re: Motor mount replacement interval?

Post by Sbeaud »

Hmm. Some more pics from Bring a Trailer. Seems like the Euros have cylindrical mounts left and right, and the US vehicles have the non-cylindrical left and right. Here are a couple of euros.

https://bringatrailer.com/listing/1985-bmw-635csi-64/
1985 Euro BMW 635 Motor Mounts-1.JPG
1985 Euro BMW 635 Motor Mounts-1.JPG (131.86 KiB) Viewed 1079 times
https://bringatrailer.com/listing/1984-bmw-635csi-4/
1984 Euro BMW 635 Motor Mounts-1.JPG
1984 Euro BMW 635 Motor Mounts-1.JPG (74.29 KiB) Viewed 1079 times
And another US 635 (non-M).

https://bringatrailer.com/listing/1988-bmw-635csi-29/
1988 BMW 635 Motor Mounts.JPG
1988 BMW 635 Motor Mounts.JPG (140.93 KiB) Viewed 1079 times
Scott Beaudry
1988 M6
songzunhuang
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Re: Motor mount replacement interval?

Post by songzunhuang »

My search continues. I am now 4 and zero. Four orders placed (each time with the website stating in-stock), each time the vendor cancelled because it wasn't in stock and they were unavailable. What a pain. Of course, I won't give up that easily. I placed a 5th order from an outfit in Tennessee. The list 5 available. We shall see.

Interesting about how all these different combinations of motor mount types. I guess the different types are interchangeable.
OK, the saga continues.
-----
Song Huang
1984 633CSi
Last 7 of VIN: 6997383
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Sbeaud
Posts: 279
Joined: Fri Jan 04, 2019 9:38 pm
Location: Okahumpka, Florida USA

Re: Motor mount replacement interval?

Post by Sbeaud »

I'm not sure I would consider them interchangeable. From my review of Bring a Trailer vehicles they are consistent.
BMW 635, M635 and M6 Motor Mounts.JPG
BMW 635, M635 and M6 Motor Mounts.JPG (34.64 KiB) Viewed 1060 times
Let me know if I'm missing something.

Scott Beaudry
1988 M6
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Sbeaud
Posts: 279
Joined: Fri Jan 04, 2019 9:38 pm
Location: Okahumpka, Florida USA

Re: Motor mount replacement interval?

Post by Sbeaud »

More information:

I was at the BMW dealer picking up some suspension parts and asked the parts advisor about 635 (non-M) motor mounts. Below is the print out from their parts system. Looks like the cylindrical mounts are used left and right for builds 9/82 to 1/87, and the non-cylindrical are used left and right from 1/87 on.

That does not seem to align with the likely factory-produced versions I've seen on Bring a Trailer, but I guess they are substituting? More info, less certainty!

Scott Beaudry
BMW 635 Motor Mounts - BMW Parts Database.JPG
BMW 635 Motor Mounts - BMW Parts Database.JPG (258.37 KiB) Viewed 1043 times
1988 M6
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