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What mounts do you have on the other end of the drivetrain?
My vehicle uses 3" round by 1.5" thick industrial rubber isolators for engine mounts and they work very well. They're mounted at 60 deg (30 deg off vertical) which is similar to the geometry Isuzu use in their truck engine mounts.
At idle the engine vibrates about 10mm on it's mounts and doesn't rattle the rest of the vehicle much at all.
I'm not a fan of flat engine mounts. Rubber absorbs vibration best in shear, not the vertical compression/extension that it's put under when mounts are flat like that.
Diesels use a heavier flywheel to smooth out the crank pulses, the front drive pulley on mine (it's JDM spec, 24v and single V belt) appears to be two piece with rubber between in a harmonic damper fashion, but you'd have to cut one apart to know for sure.
But a crankshaft damper won't help the vehicle shaking. My flywheel had two 6mm pins 180 deg apart for clutch location. Is it those you refer to?
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Last edited by Dougal; 12-31-07 at 07:48 PM.
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