motor mount - replace or re-use??? (w/ pics)
#1
Racer
Thread Starter
Join Date: Feb 2007
Location: Tampa
Posts: 331
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Hey all, I need advice on whether or not to replace this motor mount. It's from the passenger side, where my rack leaked P/S fluid everywhere. As you can tell, the fluid has already started to deteriorate the rubber on the top side of the mount...but I think it's mostly cosmetic. Structurally, the mount is still solid...it's plenty stiff and not leaking any goo from the inside out. Based on records from the P/O, both mounts have about 30k on them. The driver's side mount looks perfect... TIA for your comments/advice.
#2
Race Car
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I'd replace it as long as it is out of the car. They don't last long, and 30k miles may be near the life expectancy anyways. I guess you could measure the height as well.
#3
Racer
Thread Starter
Join Date: Feb 2007
Location: Tampa
Posts: 331
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by OriginalSterm
I'd replace it as long as it is out of the car. They don't last long, and 30k miles may be near the life expectancy anyways. I guess you could measure the height as well.
#4
Jane Bond 007
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
IIRC Porsche changed their motor mounts b/c the originals sucked so bad. If these are OEM replacements I'd probably reuse them (they're over $100 I believe). If not OEM, pitch'em and suck up the price for a new one.
#5
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by turboted
Ahhh, yes...height measurement! I knew there was a formal method for evaluating motor mounts. Anybody know the minimum height specs? Thanks.
There are different oem and aftermarket mounts out there and they have different heights.. Even with two similar mounts I measured over 2mm difference in height.
![](http://img.photobucket.com/albums/v296/Janove/Porsche%20951/DSC_0283.jpg)
Both are Oem replacement mounts , part number: 951 375 042 04
One of them was 2,5mm higher than the other.
Total height was 74-76mm IIRC..
Old Vs new mounts
![](http://img.photobucket.com/albums/v296/Janove/Porsche%20951/DSC_0289.jpg)
Old mount was 17mm shorter than the new btw ..
#6
Hey Man
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
From your pic the mount has a '92' build date. To me that is much too long for any 944 mount to be in a hot engine compartment no matter what the mileage. Age, weathering, and heat puts the biggest strain on rubber parts under heavy loads like our cars. IMO I would change them out and have the peace of mind knowing you won't have to do it again for awhile.