Printable Version of Topic

Posted by: synthesisdv Mar 29 2004, 05:40 PM

I am going to fab some motormounts but I don't have a spare one to measure.

Can someone give me some exact measurments including the rubber length and diameter and the length of the studs on each end?

thanks,
dr


Attached image(s)

Posted by: SpecialK Mar 29 2004, 06:10 PM

I'll check mine as soon as I get home (12:30 am) if you haven't already gotten an answer by then.

Posted by: URY914 Mar 29 2004, 06:40 PM

The short stud is a hair under 5/8"
the rubber is 1 1/4"
the long stud is 2 1/8"

Next you'll ask me to convert these to metric...

Paul

Posted by: synthesisdv Mar 29 2004, 06:54 PM

hey paul,

so what is that in mm? just kidding


how about the diameter of the rubber.

I was planning on finding a bushing from energy that has similar dimensions and then cutting in to exact size and passing a bolt thru the center.

Might give a little isolation compared to steel or aluminum only. My CSR had solid mounts and the damn thing would vibrate itself into pieces.

dr

Posted by: URY914 Mar 29 2004, 07:16 PM

Diameter is 2"

Pi R Squired/mm*SR+914= cost of rust free 914

I'm in the middle of building a front engine mounting bar out of 1" round tubing and 3/4" square tubing. Has to be lighter than that cast iron anchor.

Paul

Posted by: James Adams Mar 29 2004, 07:26 PM

You could just get these...

http://www.jwesteng.com/mount.htm

Posted by: URY914 Mar 29 2004, 07:43 PM

James,
Why is it called a "side-shifter" engine mounts?
Aren't they all the same?

Paul

Posted by: synthesisdv Mar 29 2004, 07:55 PM

send some this way, that is what I was thinking about.

have you tried both types? Is the nylon mount almost as rigid as the aluminum?

thanks,
dr

Posted by: James Adams Mar 29 2004, 08:24 PM

No, the tail shift cars have a different mount bar and are solid mounted at the engine. 911 (rubber) mounts are used at the outer ends.

Posted by: James Adams Mar 29 2004, 08:40 PM

The nylon is pretty rigid, but it does attenuate quite a bit more noise and vibration than the aluminum.

It is hard to compare to polyurethane, as nylon is plastic like and the hardness is measured with the Rockwell R scale. Polyurethane is considered like a rubber (and can range greatly in how hard it is from squishy soft to plastic hard) and is measured by its durometer.