So I think it's about time I inspected/replaced the stock motor mounts on my P5, and I was just inquiring about what I should look for. My car's got a little over 50K miles now, so they're probably close to being shot. The couples questions I have are:

1. How many are there? 2 sides, front, and rear?
2. Where are they at?!
3. What should I look for to determine whether they need replacement or not.

 

i saw a pic of a torn mount on another forum. kinda hard to tell if you dont have good lighting under the car. i looked under mine for the front and rear mounts and were easy to find. the side ones needed a harder look. i'll try to look for diagram/pics

 

all i know is the front one is 5 minute job.. rear is PITA

 

Yep.
Four mounts.
At 50K with any 'spirited driving' they are probably shot... Excessive wheel hop, engine moves around easily, and 'lag' as the mounts lash up under accelration are the symptoms. Torn rubber is the visual indication for the sides.

There is a new kinder/gentler upgraded mount than AWR and others have been using the Diesel (yep) motor mounts from Europe.

My AWRs have settled down and do a good job. At first they made everything in the car resonate!

 

I definitely don't want anything that's gonna make the shaking and rattling any worse than it already is. I'll have to take a look this weekend when I have some free time, thanks mate.

 

SLS Performance is beginning to offer motor mounts in which both vibration and driveline slop are minimized, although they currently offer only front and passenger side mounts.

People report that Street Unit (hey, no asterisks!!) mounts, at a mild 62A durometer, do well, although I think it's hard to get the side mounts/the company may be uncooperative, whatever. Don't want to slam anyone, I just heard some stories.

I have the SLS mount up front, the MSP side mount, will install AWR side inserts, and either an SU or SLS rear--depending on how long it takes for SLS to release their rear mount. Check out SLS--they seem to be doing things right.

 

sls ftw. the street unit mounts are made from billet aluminum, and may bend or break. go with awr or sls. awr even makes a disclaimer about the street unit mounts being subpar. so if you go with them be careful

 

omg I'm telling! you said "street unit" lolz

yeah someone let me know when SLS releases another mount, since I can't exactly receive PMs over yonder anymore.

 

i might. for a fee.

 

Doubt SU will break. They look to be built well--solid billet aluminum

 

AWR is aware there are other companies now out there which are selling 'pretty' engine mounts, that are cheaper than our mounts. While we strive to make a nice looking product, function is our primary goal.

These other mounts, while shiny and pretty, use a really soft urethane bushing, which will not come close to stopping your driveline lash.

If you just want your hidden mounts to be pretty, then you can buy the other mounts, but if you truly want a performance mount, then there is no substitute for the AWR mount with stiff urethane bushings.

Manufactured with stiff urethane bushings instead of rubber encased in a gold zinc bracket. Our softest 70 durometer urethane, yet still provides much more motion control than stock mounts.

Recommended for Automatic transmission model or for manual transmission if you don't want the stiffer 88 or 95 durometer mounts. Helps stop drivetain lash (rocking) when transitioning from gas on to gas off. Includes left and right (near radiator and firewall) engine mounts in urethane (39-040/050). Can be used on Automatic or Manual transmissions. Bushings are also available separately and inexpensively.

 

"i am just a doggy poo!!"

anybody try rr-racing's engine mount inserts? there is a little bit of discussion here and there but nothing definite. just interested in knowing if installation is any easier and what kind of results people are getting vs. the AWR or other brands. the inserts are only $55 for both front and rear so they look like an awesomely priced alternative.

 

The install is easier for the rear, but for the front it's no easier. I had the rr racing rear inserts with a 70 durometer insert in my AWR front mount and the vibration was too much even for me.

 

 

I had the AWR front and side inserts on my MSP. I had good luck with them but if I had it to do over again I would've bought the entire mount instead of just an insert for the sides. AWR stuff is the way I'd go. I trust them from my experience with them.