I have had two ERAs and seen others that the headers contact the body (lightly). I tried the ERA bolt limiter and adjusting the engine around to no success.
I knew there was a better way. This is it.
I decided to put polyurethane motor mounts in, but you can't buy them for this application. I think the mounts are 63-64 Ford big car.
Here are a few pictures and the quick how to;
1. Make a mold off a rubber mount. Some clay was needed on the bottom to let me get a good straight line to create the mold
2. Pull the rubber out and clean up the steal halfs. Some heat required.
3. Load the steal halfs into the mold. Plan and drill a hole into the mold to pour the urethane and use grease or something similar for a mold release. This mold was one time use since the mounts are handed. I even glued the part lines to minimize leaks (lesson learned on the first mount)
4. In order to keep the urethane from running out I poured about 1/2" of plaster paris on each side of my mold that contained the steel halfs.
5. Mix and pour in the urethane. Let it dry for about 48 hours and then gently break the mold away. The result looks just like the rubber mount, but has a hardness rating of 80 Shore. 7 days total dry time is required.
I have about $150 in both mounts. The Polyurethane came from Energy Suspension (2 cans needed)
DST DIYMMI Do It Yourself Motor Mount Inserts - Liquid Urethane Made by DST (Mcmaster carr has the same material in larger containers)
The clay came from Walmart and the plaster paris from a local craft store.
I would use fiberglass or urethane to make the molds if I was doing a quantity, but for one off the plaster paris works well.
John
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Do you need urethane motor mounts? Here is DIY
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