solid & rubber engine mount

[71_Duster]

I've heard some guys run a solid engine mount on the drivers side with a rubber on the right and for the trans. It's claimed that the vibration isn't bad to negligible. My 440 sure dances on the rubber mounts I currently have.

Anyone have opinions on this?

 

[Lefty71]

If you have old biscuit mounts, a solid drivers side mount can keep your motor from ruining your hood. Some guys will use a torque limiter, and then keep all three mounts rubber.

 

[dadsbee]

Been running solids since 1979! Nothing changes... except you're no longer watching the hood lift up!

 

[91r/t]

Can run a polyloc mounts as well. I run stardard mounts with a torque bar from Mancini on the K member on the drivers side.

 

[Cranky]

Ran a solid mount on the left side on a 10.60 back in the olden days.....but never ran one on the street? Broke a mount in my Dakota probably 15 years ago and just bolted the motor down with a chain.

 

[71_Duster]

Sorry forgot to mention it is a street car.

So from those with experience you don't find the vibration objectionable or even more noticeable then a big block jumping around on rubber mounts?

 

[dadsbee]

Based on what you just said... probably smoother!

 

[matthon]

In my experience the polylocs suck.
The 'locs' are vertical, which allows them to slide. After installing a heat shield, chain on the driver's side, went thru 3 passenger mounts.
They sent me a free new one each time, but after cutting the second one open I realized it's a design flaw, in my opinion.
Ended up drilling a hole thru it and putting a bolt in it.
Now the driver's side is slipping apart.

Bought solid mounts, just haven't installed yet.

 

[mopar 3 B]

If it shakes now it will shake later. As stated there will no longer be engine lift.

 

[WileE]

I used a homemade solid mount on driver side for years, just fine.

 

[mopar 3 B]

I have used solids on both sides myself. What stretches on one side will compress on the other. Some thing to think about.

 

[hunt2elk]

I had a failure with Polylocs a few years ago. After that, I went to the rubber mounts from Mancini with the through bolt on the drivers side along with a torque strap. All was fine, or so I thought until I was messing around with my Duster this winter and noticed the Mancini biscuit mounts were twisted all to hell. This motor is a 408 stroker with 470 hp and 517 torque backed by a 4-speed. The motor was even moved to the rear about a 1/4" from where it originally sat. Granted I did a bunch of hard driving last summer getting the carb dialed in, but I didn't expect the mounts to distort the way they did. So I went to Moroso solids, removed the strap, and left the rubber trans mount. What a world of difference. Everything is so much more firm, tight, and smooth. No vibrations or rattles at all.
I then did the same to my Road Runner and really like the feel of that as well. I did get a rattle from the blower motor on that car however. The heater box on that car has never been removed and I am sure needs some attention which I will get to one of these days. In the meantime I just wedged a piece of jute against the back of the motor and all is well.
I also used 1/2" grade 8 bolts instead if the factory 3/8" for the mount to k-frame.

 

[Lelo 500]

. In the meantime I just wedged a piece of jute against the back of the motor and all is well.

Don't burn your car down.

 

[hunt2elk]

Don't burn your car down.

Lol. Should have said wedged a peice of jute behind the blower motor.

 

[matthon]

I went to brand new rubber mounts with powder coated brackets at one point.
Bent the driver's side mount.

 

[Joske2]

I went from Polylocs to Dynatech , quite pleased with the result.