Quote:
Originally Posted by gear-head
Mach4, care to share where do you get this "Shore A 75 urethane", please?
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The Shore A 75 Urethane should only be used if you are trying to get extremely firm mounts. Using this urethane will give you close to solid mount kind of performance. Very high vibration levels particularly at idle. If this is what you're looking for,
AeroMarine Products is a good source.
The Shore A 30 Urethane that I have used successfully and recommend can be sourced through
Reynolds Advanced Materials. It appears that they have a "next generation" product called ReoFlex which is available in Shore A 20, 30, 40, 50 and 60 hardnesses. While this isn't the actual product I used, it's the one that replaced the one I used. It's what I would order today if I were to create another set of mounts.
Also I recommend the Meyle mounts. They may not be the best mounts available, but the way the flashing remains from their manufacturing process leaves an almost perfect void into which you can pour your urethane. With other mounts there is no flashing and you'll need to figure out how to seal up the "side" of the mounts to retain the urethane. Since your mounts can't collapse, you can use slightly inferior mounts to start with.
For those that have or are going to make a pop tester, the ram on a 2 ton bottle jack that you'll remove and throw away, is the perfect size to shove in the bolt hole to seal that up and cast a nice bolt hole. Cut in half - one for each mount.
See this link for more details -
http://www.peachparts.com/shopforum/3061724-post317.html