Quote:
Originally Posted by chrs1961815
Yesterday I put my original motor mounts on to replace the floatamotors that were on. I had bought new rubber from Brattons and a bolt set for the frame from Third Gen Automotive (what used to be Roy Nacewicz).
I managed to install everything, but the Bratton rubber was not completely right: the outer plate rubber had ribs to go into the frame holes but those are not right so I shaved them off. Toward the end the nuts were really tight as I was just trying to get enough to get the cotter pin it. That doesn't seem right. Will I have vibration issues when I reinstall my engine?
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I don't know if you solved your problem but let me give some info that might clear-up some confusion for those searching this later;
The A-5094 Rear Support Cushion (Outer) is a
flat piece of rubber with 3 holes that are supposed to be 7/16" inside diameter. There are no ribs or protrusions on this piece. The uncompressed thickness is 0.208"-0.228". The specifications for this material is the same as the A-5092 material, so my guess is that it should compress to a total thickness of 0.1875" when properly installed.
The A-5092 Rear Support Cushion (Inner) has two dimensions shown on the print. The manufactured thickness calls for a finished moulded dimensional tolerance of 0.215"-0.230" -HOWEVER it calls for a compressed installed thickness of 3/16" (0.1875"). This means when the fasteners are tightened, the entire inner rubber is to be 3/16" thick, ...which is where I came up with the installed dimension for the A-5094 piece. The print also calls for the 3 protrusions to be 5/32" (0.1562") with a 5/8" outside diameter and a 7/16" inside diameter. These dimensions are correct for the frame side member and the metal spacers.
The A-5093 metal spacer is spec-ed out at 7/16" outside diameter and having a total length of 0.521"-0.541". I think when you will find when add the thickness of the A-5090 and the A-5015/16 side members, you are going to find that as long as the metal spacer is the proper length, everything will fit fine and there will not be any vibrations.