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Engine Vibration

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bugedd

bugedd

Jedi Knight
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Recently I started feeling rough vibrations from the motor at about 1100 rpm, so just above idle. The car runs well, there is no noises, just this vibration. It does not matter if the clutch is engaged or not. Does the motor have some sort of balancer that could be giving an issue?
 
Which engine do you have?
i have 948 it did not have a harmonic balance just a straight o
up wore out pulley I put a harmonic balancer on mine.
yours may also have a after market one one.
could it maybe be the advance plate sticking in the distributor
 
Could it be a carb sync issue? I know when my carbs have been even slightly out of adjustment, it tends to manifest itself down at the lower rpms.
 
its a 1275 with Su's. I think I'll drive it to a mechanic an hour and a half away. He's restores these things, he should be able to figure it out.
 
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