dave90gt

91GT 160k Miles and 40k miles on generic rebuilt engine.

Engine shakes when between 1200 and 2000 rpm, doesn't matter if the car is not moving and the clutch is pushed in still shakes...

I'm think flywheel or harmonic balanancer?

Maybe something more simple? Help!!!!

BCP

how old are the motor mounts?

does it seem to right fine otherwise?

dave90gt

Checked the Motor Mounts and they seem ok.

Runs great, no loud noises and will still smoke the tires.....

99saleen351r

Id start with simple things like a shifted belt in the tire or a bubble in the sidewall??Then go towards other things such as flywheel which is unlikely unless the weights fell off.Could be the clutch.Are your lugs tight??

After reading the rest of the post [&:]I see you said it does it sitting still which would make me think balancer or bad shaft in the tranny??

brutal_gt

balancer.

gspfunk

Sounds like your balancer. I went w/ the Prof. Products balancer and spacer from 50resto...it was $79, but it's a much nicer piece than stock.

dave90gt

Ok, FYI it was happening when the car was not moving so I know it isn't a tire/suspension issue.

Is there something that can go bad in the balancer or is just a chunk of steel?

Thanks

frop

The balancer is a hub and a steel ring around with a rubber sandwich in between them.

dave90gt

So I guess the rubber could deteroriate and cause the balance to be affected....

frop

Exactly.