Motor Mounts - Moving to Poly
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Well looks like I have worn out another set of motor mounts. These liquid filled mounts just do not seem to be all that durable. Or maybe it is just me. Instead of fulfilling the definition of insanity (doing the same thing over and over while expecting a different result) we have decided to take a slightly different route.
We are going to drain a set of motor mounts and fill with liquid poly urethane and let it harden before installing. Apparently the MB guys in Europe have been doing this for awhile on certain models.
This should keep me from having to replace these things every 25k miles or so and should reduce engine movement. Downside will be increased NVH - although I do not know to what extent at this point.
Not an exact fit but these links will give you an idea of what I am talking about:
How To Make Universal Motor Mount Inserts
Prothane Suspension Parts - Part Number DIYMMI - Do It Yourself Motor Mount Inserts - Liquid Urethane
We are going to drain a set of motor mounts and fill with liquid poly urethane and let it harden before installing. Apparently the MB guys in Europe have been doing this for awhile on certain models.
This should keep me from having to replace these things every 25k miles or so and should reduce engine movement. Downside will be increased NVH - although I do not know to what extent at this point.
Not an exact fit but these links will give you an idea of what I am talking about:
How To Make Universal Motor Mount Inserts
Prothane Suspension Parts - Part Number DIYMMI - Do It Yourself Motor Mount Inserts - Liquid Urethane
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How could anyone forget your cable
I need to find pictures of it and look at it again. My one concern when I first saw this was the stress on the SC.
I was looking through your gallery and only saw the picture of the cable wrapping around the frame but do not see on of it over the motor. Do you have more pictures?
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I was looking through your gallery and only saw the picture of the cable wrapping around the frame but do not see on of it over the motor. Do you have more pictures?
Last edited by SRT6_Roadster; 07-28-2011 at 02:12 PM.
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Waldig- Any chance of getting pictures of the way you have routed the chain?
So the shop that is taking care of my motor mounts did a bit of investigation and they have decided to go with #80 poly urethane on the motor mounts. I am a bit concerned that this may transmit too much vibration but the shop thought it would be okay. Plus they were worried that anything less just would not hold up with the torque the motor is putting out.
Should have a report on the car Tuesday or so. If the motor mounts are transmit too much vibration we will try a different strength compound in the old motor mounts.
So the shop that is taking care of my motor mounts did a bit of investigation and they have decided to go with #80 poly urethane on the motor mounts. I am a bit concerned that this may transmit too much vibration but the shop thought it would be okay. Plus they were worried that anything less just would not hold up with the torque the motor is putting out.
Should have a report on the car Tuesday or so. If the motor mounts are transmit too much vibration we will try a different strength compound in the old motor mounts.
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I added a ss cable not chain and used it to loop over the motor mounts groove and under the frame support, motion I have - stress I dont there is slack 1" Woody
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ENJOY< woody
Larger photo in the gallery: Fuel system upgrades (031)
https://www.crossfireforum.org/galle...grade_0311.JPG
ENJOY< woody
Larger photo in the gallery: Fuel system upgrades (031)
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I haven't experienced this problem so far, but maybe it is just happening with the clutch/manuel transmissions. I did experience this in my younger years on my '69 Z-28. The rubber mounts wouldn't hold up. We cabled the torque side down. I had a cable made up with loops. I bolted one end to the frame, the other to the block with about an inch of play...never lost another motor mount... I did this with my big block '71 Camaro as well...same results. Any hardware can make you cable, and it is a cleaner look. I have even seen them chained down...
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Originally Posted by Infinite
I never really noticed an issue with my mounts... and I gave my car absolute hell.
Why not look into solid mounts? you only noticed the increased vibration at idle... I have them on my 240 and my turbo civic and i absolutely love them
Why not look into solid mounts? you only noticed the increased vibration at idle... I have them on my 240 and my turbo civic and i absolutely love them
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Is there any way to visually inspect them w/o removing them? Mine feel like they've softened over the years, I feel it especially on the 1-2 shift, and putting around town... I can feel a lot of "give" in the powertrain. Perhaps it's my imagination, but...
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Originally Posted by JHM2K
Is there any way to visually inspect them w/o removing them? Mine feel like they've softened over the years, I feel it especially on the 1-2 shift, and putting around town... I can feel a lot of "give" in the powertrain. Perhaps it's my imagination, but...