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Author Topic: Engine Mounts and poly.  (Read 4442 times)

February 01, 2011, 03:15:47 pm

theman53

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Engine Mounts and poly.
« on: February 01, 2011, 03:15:47 pm »
I have the hydro front engine mount. Is the solid rubber that much harsher? I need one I believe. I think I am also going to go to poly insert in my rear mount.
I would also like to see if the trans mount is bad. It felt fine this summer, but the clutch I have is kinda brutal on stuff. The front mount is toast, but the trans mount looks OK ish The rear one is brand new auto haus and I think with the prothane insert it will be what I am looking for.
Any input would be great on what you guys run and how you think it feels.
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Reply #1February 01, 2011, 06:23:00 pm

catlin_cava

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Re: Engine Mounts and poly.
« Reply #1 on: February 01, 2011, 06:23:00 pm »
YOU STOLE MY PICTURE  ;D
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Reply #2February 01, 2011, 07:34:56 pm

theman53

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Re: Engine Mounts and poly.
« Reply #2 on: February 01, 2011, 07:34:56 pm »
told ya LOL!!!!!!!!!!!!!!!!!
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Reply #3February 01, 2011, 08:56:30 pm

RadoTD

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Re: Engine Mounts and poly.
« Reply #3 on: February 01, 2011, 08:56:30 pm »
I went from rubber to poly mounts on an old gasser of mine and it was nice on acceleration/deceleration, but there was a lot more vibration. I think it would be pretty rough with a diesel.

Tightening the mounts will bring the resonating frequency up and might actually leave it in idling/driving rpm ranges. I know my car resonates from the engine at 800-1200rpm... meaning EVERYTHING shakes every time I run through that rpm range.  So, I just idle my car below that rpm. Most other people complain about everything shaking when they idle it under 6-700rpm, so they're resonating down there.

That being said, I've never run solid/poly mounts with a diesel... hopefully someone here has and can share some more definite info! :D
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Quote from: R.O.R-2.0 on July 24, 2011, 11:57:45 pm
enough boost is when you have 3 dimple marks in the hood from the valve cover nuts..  ;D
Reply #4February 01, 2011, 11:15:18 pm

rabbitman

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Re: Engine Mounts and poly.
« Reply #4 on: February 01, 2011, 11:15:18 pm »
Quote from: RadoTD on February 01, 2011, 08:56:30 pm
That being said, I've never run solid/poly mounts with a diesel... hopefully someone here has and can share some more definite info! :D

Absolutely horrible on a MK1, the rear tranny mount made things vibrate soooo bad I couldn't hear the engine at all below 1500rpm because of all the rattles (this was with a 2.5" straight exhaust and no turbo) so I removed it and installed the front torque stop and though it was tolerable and even shifted nicer I swapped it out for a new rubber one. It felt like a new car after that.
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Reply #5February 01, 2011, 11:45:42 pm

mystery3

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Re: Engine Mounts and poly.
« Reply #5 on: February 01, 2011, 11:45:42 pm »
I run them on a mkI, prothane inserts on either side, I was running them all the way around but swapped the transmission mount for the "heavy duty" rubber one which is worn out after about 10k miles. They definitely increase noise and vibration but I find them to be tolerable and I don't even have an interior. Not too much different than running solid or poly mounts on a gasser which I've run on dodge neons and a few bmws.
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Reply #6February 02, 2011, 10:14:47 am

VWCaddy

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Re: Engine Mounts and poly.
« Reply #6 on: February 02, 2011, 10:14:47 am »
For the rear mount, what I have found that works quite well is to fill in the "air gap" with a length of rubber heater hose.  I use a length of hose (~5/8" as I recall), slit lengthwise and slip that over the "horn" of the mount.  Glue that in place with some good adhesive and run it that way.  With the air gap filled in for the most part, the mount is more solid but since the gap is filled with the rubber hose, it still soaks up the vibrations fairly well.
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Reply #7February 02, 2011, 11:51:23 am

GEE-BEE

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Re: Engine Mounts and poly.
« Reply #7 on: February 02, 2011, 11:51:23 am »
You can get the mounts and the isolators for 53.00

Ebay item :360298866026

all mounts and isolators

GB
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Reply #8February 02, 2011, 03:43:14 pm

theman53

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Re: Engine Mounts and poly.
« Reply #8 on: February 02, 2011, 03:43:14 pm »
I have the isolators and a new mount for the rear one...I will just get the poly inserts for 15.00 or so. I even have the old mount that really looked good, but put the new in for good measure.

My biggest question is the front mount that attaches by the starter and the trans mount that sits down in... What is the generalization of the best for those. Like I said my clutch is pretty much on off, and that makes it harsh no matter what. So, I am willing to give a little on ride as I don't think it will matter much. Down the road ride as opposed to lauch ride characteristics I may not be as keen on giving away.
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Reply #9February 02, 2011, 04:59:23 pm

truckinwagen

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Re: Engine Mounts and poly.
« Reply #9 on: February 02, 2011, 04:59:23 pm »
just because the old rear mount looked good doesn't mean that it was.

my g60 diesel had a "looked OK" rear mount that was worn so bad that it would allow the brackets to bang into each other on a hard launch.

as for the front, I took a stock hydro mount and made it solid.

that is, I drilled holes to drain the hydro fluid, and then filled it with Lexel(a caulking that is AWESOME)

the car vibrated alot, but probably from the harsh cummins injection(the isuzu is doing the same now) but launch was great!

-Owen
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