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Roll Restrictors

Z

zxtuner

CEG'er
Joined
May 3, 2012
Messages
170
Location
Minneapolis
Can these be installed with the engine in the car; as in do they support the engine in any way. I searched several different times and really did't find a solid answer.
 
Usually you just need to place a board and jack under the oil pan to get some of the weight of the engine off the mounts. That way you can unbolt them and slide the bolts out easier.

The front of a SVT has a roll resistor (different than the rear) and a small shock known as a "stab-o-shock" to keep the engine roll under control.
 
Yes you can support the engine/trans and change them in the car. I put a board on my floor jack to spread the weight first. Jacking up allows you to have more room to pull them out. On the rear of the MTX it just drops away when unbolted. On auto cars Its a set on top so you have to twist it out.
 
I have the 94A poly mounts f/r in my car and it really stops the engine from rolling, and the VIBRATION that is transfered into the car is AWESOME! If you have never felt it before, it makes it feel like you are driving a race car :laugh:.
 
Serious. Solid or poly filled roll resistors will make the car vibrate.
 
it's all good I drove a ATX zx2 for a while and those things vibrate like crazy just because. Thanks for letting me know.
 
I did a couple of units using shore 60A poly and I found that the reduction in roll was much better then the stock rubber but without the noisy vibrations that the harder/stiffer poly transfers. I still have some of this poly left if anyone is interested. I will need a stock unit to fill as I sold the last one and have no cores. It's a good upgrade over stock with out the noise.
 
The rubber inside screwed it up. It works for the most part. But i want it really stiff like it was at first. The rubber wasnt a good combo with the poly and it kinda loosened the whole thing up
 
blu_fuz said:
Serious. Solid or poly filled roll resistors will make the car vibrate.
Click to expand...

I have an Energy Suspension front mount and filled the rear mount with Windo-Weld urethane, and there is really no vibration to speak of. I'm sure if you did a back-to-back with a stock setup you could feel it, but I've been in cars that are NASTY HARSH compared to mine.

I think the Windo-Weld is a nice medium to control the slop well, but stay on the nice side of harshness.
 
Just go here...

http://www.mcmaster.com/#urethane-casting-compounds/=p06yln

Break down is something along these lines...

OEM feel, Durometer of 60A, p/n: 8644K24
Performance, Durometer of 80A, p/n: 8644K11
Race, Durometer of 94A, p/n: 8644K18

For more information on the durometer scale you can read about it here, http://www.mcmaster.com/#about-rubber-durometer-hardness/=p070uf

1lb will be almost enough to do two, but I'd order 2lbs worth as you really need about 1-1/2lbs of material to fill both the front and rear roll resistors. All of the p/n's I listed also cure to a black color so it will look like it belongs as opposed to the amber color that that other website indicated. Plus that site didn't list prices. McMaster is reasonable priced at $33 a pound.

EDIT: This assumes you are removing the existing rubber material in the roll resistors. If you leave that rubber in you will not need more than 1lb. However removing the existing material is recommended.

I also found this website too, http://www.energysuspensionparts.com/proddetail.asp?prod=DIYMMI They are selling the same product as McMaster. If you do not know what you are doing they also have instructions for you too, which are here: http://www.energysuspensionparts.com/About-How-to-Make-Universal-Motor-Mount-Inserts.asp

In all cases the product comes from Forsch Polymer, http://www.forschpolymer.com/index.html
 
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