Wevo Motor mounts

My motor mounts are shot and need to be replaced. I inspected them and one is really sloppy and the other is nowhere near acceptable. Anyhow I've spent over an hour searching threads today on the Wevo mounts and they seem like the way to go as far as upgrading the mounts. However I can't get much feedback on the standard Blue pillows for the mounts vs. the Black pillows. I'm leaning towards Black just for the fact that my car still spends much of it's time on the street. However Several of the GT3 guys are using the standard blue mounts and state they have no discernable increase in cabin vibrations with these mounts. I was hoping that Wevo would be able to give me feedback on vibrations vs. the OEM RS mounts or Hard rubber mounts but they wrote back and stated they had no comparison data. Anyow...if anyone has these mounts and simply hasn't posted about them I'd love to hear your impressions. http://www.wevo.com/Products/Chassis...gineMounts.htm Andy

Andy, do you track the car considerably? I do, and still run with the stock mounts and there is NO detriment from running the stock mounts. Contrary to what most will say here, there is not the significant weight shift from using a non-solid mount like the stock ones.

Dell, I agree, BUT somehow with only 45K miles on my car the mounts are shot and the Wevo product seems to be standing up to the abuse given to it by track cars. Also it's cheaper than the OEM mounts so I figured why not. An added benefit is that if they do wear out the pillows can be replaced for $35 vs. another set of OEM mounts at $300-400. Andy

Andy, now that is one rational answer! If you have to change your mounts then maybe go with the WEVO product. The only caveat is that they do NOT make a 996 mount and will tell you as such. What I find comical is that if you contact them they will say they do not approve them for the 996 yet their website says to use the 993 mounts with a longer bolt.

Andy, Have you considered RS mount. My mounts were shot and I changed to RS mounts last month, and felt immediate improvement on shifting. And also deeper sound from the engine. I ordered from Sunset for around $330, but you will have to source a longer center bolt. If you need part #, let me know. OEM mounts are $260/pair, RS mount definitely a cheap/good upgrade. M

The improvement you felt was replacing shot mounts, not upgrading to the RS mounts. You would have felt the exact same thing with the stock mounts. Not sure I follow your "deeper sound" comment. Do the RS mounts have some sort of noise maker attached to them?

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I did, but the Wevo's are still cheaper ($280ish) and to me there were a couple of advantages to the Wevo product. From my research on how hard each of these mounts are it seems like the RS mounts actually fall right in the middle of the blue vs. Black pillows on the Wevo mounts when looking at their Shore A durometer readings. I went with the softer of the two options for the Wevo mounts realizing that my car is still much more a street car than track car. Again the really nice bonus for me with the Wevo's is that if they wear out over time (I sure hope not) they can be rebuilt with new pillows for only $35. Or if I get the black (softer) mounts in the car and decide I want more feel from them I can again get the $35 pillows and experiment. They should be here on Tuesday...I'll report back after the install. Anything's better than my compressed / leaky stock mounts that are in there now. Andy

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I plan on doing the same thing...as soon as you report back with your experience. Do you have the specs on the longer bolts required for the installation of the Wevo mounts?

M12 x 130mm. Not sure on the thread pitch so I'm going to buy bolts as well as nuts to make sure I've got the proper thread pitch and everything in place when the mounts get here. Andy

OEM bolt is 1.5 pitch

Thx guys.

Remember, the vibration that is not absorbed by the engine mounts reverberates back through the engine components.............not sure how that would affect the knock sensor? False readings?

You're kidding, right?

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Who me?

If you were referring to the knock sensor, I am sure the frequency is different and probably not cause a false reading but there will be more vibration send through the reciprocating parts, that is fact. I have had solid motor mounts on cars twice, just making sure people don't use them on their 996. Not fun to feel the vibes of the motor everyday.

I have had the WEVO mounts on my GT3 since Sept 2006 and about 18,000 miles. No problems of any sort

I was just expressing surprise that the coupling of the engine to the chassis would have an impact on the function of the knock sensors. I've never come across any consideration given to the coupling of the engine to the chassis when it comes to knock detection. I'd think that vibration from the transmission would be a bigger concern, but it's been a few years since I read much about that, so who knows what is being done lately? I agree completely that solid mounts wouldn't be a good idea on a street car. At least not on my street car!

Gents: The Update. I'm very happy with the Wevo mounts now that they're installed. Since I purchased my car over 2 years ago I could not figure out why the idle felt soo rough in the cabin of the car. With nobody in the passenger seat when you sat at idle you could see the passengers seat shaking back and forth from the vibrations in the interior. I changed the plugs, cleaned the TB, etc and all of these slightly improved the virbations at idle but I eventually chalked it up to being part of the experience of owning a car with a boxer configuration motor. I'm happy to report that the issue was actually one of my factory mounts going bad and the car has VERY little, if any vibrations through the cabin at idle now with the new mounts. I'm sure new factory mounts would have been the same result for this particular issue. I had also noticed that drive train slop was getting annoying to the point where it was difficult to pull away from a stop smoothly. This also has been cured with the new Wevo mounts in the car and I no longer feel like a 16 yr old learning to drive a manual transmission car every time I leave a stoplight. Now to be fair, There are increased vibrations and harmonics associated with the new mounts. (even with the softer black pillows which I opted for on my install) Where I notice it the most is right in the 2800-3400 rpm range which happens to be where I do most of my cruising in gear. It's not annoying to the point where I'd consider taking the mounts out of my car BUT there is an in crease in vibrations through the car particularly in this RPM range that should be noted for those considering these mounts. What's weird is you hear more than you feel at higher RPM's...but at cruising RPM's where you really start to notice them it's more feel than sound. (did that make sense?). Install was a breeze. 30 minutes start to finish. On the bolt size, I had previously researched and found on the GT3 forum that a M12 bolt in 130mm length was required. I went to my local Fastenal location and the longest they had was a 120mm length bolt. I'm not sure if the carrier is slightly different on the 996 vs. the GT3 but the 120mm length bolt is pleanty long. There's 10-15mm of thread sticking through the nut on the bottom even with using an additional washer against the engine plate. They'll get track tested on Friday...though I really doubt I'll feel much of a difference at the track. Andy

Thanks for the update!

Still happy with the mounts? I have the same issue with my passenger seat shaking. How can you tell the mounts are going? Push and pry or something?

Yes and No. I actually no longer own the car but here was an observation I made. When the mounts were in the car I was completely happy with them. Driveline defletion was smaller, shifts felt better, great performance / track mod. What I didn't pay attention to was the amount of increased harmonics that the mounts actually added inside the car. I replaced the one bad motor mount in the car and put stock motor mounts back in it when I sold the car. After putting stock mounts in i was pretty shocked at how drastic the change actually was between the two. When I first switched all I cared about were the advantages of the wevo mounts. When I went back It was like I almost missed how civil the car was without them. The biggest thing for me was that the most annoying place in the rev band you got the increased harmonics at was right where I'd cruise RPM whise while on the freeway (80mph). Andy

That's good to know thanks!

I did a install guide and review on these WEVO motor mounts a while back. Here is a link to that thread: https://rennlist.com/forums/showthre...ferrerid=41686 PS: I am still very happy with the on-track benefits of this mod.

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That might explain why the air pump electrical wire was unhooked, which was the cause of the nagging CEL. It wasn't the exhaust, nor seatbelt. Daddio is still loving the heck out of it!

how can you tell when it is time to change the motor mounts ?

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ARGGGGGGGGGG! Tell him sorry for me missing that! The pump needs to be moved to get easy access to the driver side mount. I'm such an idiot sometimes. Glad to hear he's enjoying the car. I actually took the long way to work in the M3 this morning and was thinking about how it would have been better in the old red beauty.

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I had a bad vibration inside the car at idle. Initially I jacked up the car from the rear jacking point on the engine and watched movement of the engine to determine if there was alot of play in them or not which gave me an initial idea that there was an issue. I really couldn't tell until I got them out of the car though. When I got them out it was clear the one was bad as the stud on the mount was very easy to move around with no resistance like the other side.

Another option is the 996 TT motor mounts which are more robust. I have them on my 996 race car though I would have gone to Wevo's except these were given to me. Oh and you can tell when your motor mounts broken when the guy behind you on grid pulls forward to tell you your motor is falling out ....

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Andy, this is normal.