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-   -   Mazda competition engine mounts durometer? (https://www.rx7club.com/1st-generation-specific-1979-1985-18/mazda-competition-engine-mounts-durometer-895873/)

NCross 04-01-10 09:01 AM

Mazda competition engine mounts durometer?
 
Exactly how stiff are these mounts? It says how many percent stiffer than stock they are, but I want a durometer number. I see the 95d mounts on ebay, but that's almost sold. I want somewhere in between stock and solid.

Thanks!

DriveFast7 04-01-10 10:14 AM

Not as hard as a hockey puck. I have a new set in the garage but no way to measure durometer.

NCross 04-01-10 10:43 AM

So you would just recommend that I get the Mazda ones and not the 95d poly mounts?

bwaits 04-01-10 11:30 AM

One thing to remember is that mounts that use a solid bolt through them will be stiffer than a stock style mount even if the durometer is lower. Since they are rigid in extension.

A 95 on the D scale is basically solid, as you mentioned. 95D is the same shore listed for ridged plastics, not rubber. Maybe they meant 95A.

-billy

DriveFast7 04-01-10 01:27 PM

The harder the mount, the more shake and shimmy. And like Billy said, if you have mount that uses a bolt that goes all the way thru, it's gonna transmit a lot more vibration.

The stocker and mazda comp mounts each have two bolts molded in them, offset, that are separate from each other. So the rubber will absorb more shock.

coldy13 04-01-10 05:48 PM

I made my own mounts out of white delrin and ran a bolt all the way through. It has the smallest vibration at idle, barely enough to even notice, and no vibration at higher RPM. Rotarys run so smooth that even with a near solid mount you wont notice much if any vibration.

NCross 04-01-10 07:56 PM

Did you change your tranny mounts along with them? It was a 95a. I just put the D there to stand for durometer.

So in your opinion, would you rather run the Mazda comp mounts or the poly 95a mounts from ebay? They both run about the same price roughly. This is a car I want to drive everyday. i don't mind a little bit of vibration, but I don't want my teeth to chatter.

bwaits 04-02-10 08:24 AM


Originally Posted by NCross (Post 9909133)
Did you change your tranny mounts along with them? It was a 95a. I just put the D there to stand for durometer.

So in your opinion, would you rather run the Mazda comp mounts or the poly 95a mounts from ebay? They both run about the same price roughly. This is a car I want to drive everyday. i don't mind a little bit of vibration, but I don't want my teeth to chatter.

95A sounds better :nod: This is roughly the same as poly suspension bushings.

If it were me, I would go with the mazda comp pieces since they are designed like stock.

-billy

Keith13b 04-02-10 10:29 AM


Originally Posted by bwaits_ (Post 9909958)
95A sounds better :nod: This is roughly the same as poly suspension bushings.

If it were me, I would go with the mazda comp pieces since they are designed like stock.

-billy

I agree with Billy. I have the Mazda Comp mounts on my car and love them. I think it fits your requirement of "in-between" the stock and solid. Two :icon_tup: from me!

Not to mention its a factory part with quality control!

Jeff20B 04-02-10 01:36 PM

I like the Mazda competition engine mounts.

Hyper4mance2k 04-02-10 03:48 PM

search hocky pucks...

NCross 04-02-10 04:03 PM

I've already tossed the hockey puck idea around a few months back, but I want something that was made precisely for this engine. I went ahead and ordered Mazda mounts.


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