Thread: 351W Harmonic balance
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Old 02-10-2007, 06:11 AM
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coosawjack coosawjack is offline
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Join Date: May 2002
Location: Beaufort, SC
Cobra Make, Engine: Classic Roadsters '66 427 Replica-SOLD
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I have a slight vibration in my CR at 1200 RPM that returns at about 2400 RPM with a fully balanced engine that I doubted was the culprit??

I found that the side pipes are causing it since they are attached to the frame just in front of the back wheels!! Unbolt them and take a short spin to see if that is your vibration (harmonic) source??

I made some heavy rubber "Donuts" to help isolate the side pipes from the frame and they helped quite a bit!!

I can send you a couple to try if you like!!

Coosawjack
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