88v8 Ivor Duarte Gloucestershire UK (1041 posts) Registered: 02/11/2010 04:29AM Main British Car: 1974 Land Rover Lightweight V8 |
Re: Vibration at. “2000 rpm in neutral or moving
Hello and welcome.
Is this a new problem? Is it actually a vibration you can feel, or just a noise? When the engine is running, with a stethoscope or a long screwdriver, can you determine whether it's at the back of the engine or the front? Auto or manual? Ivor |
Re: Vibration at. “2000 rpm in neutral or moving
I had my mechanic look at it, we found the driveshaft was loose and tightened it and he drove it some more and we still had an engine vibration, he pulled over left it in neutral, it has a five speed mustang transmission and in neutral it still had that vibration
I recently purchased a car and talked to the gentleman that built it and he said he put. In a new fly wheel but he did not check to see if it was balanced I am stumped All the engine parts come from D & D Fabrication in Michigan |
88v8 Ivor Duarte Gloucestershire UK (1041 posts) Registered: 02/11/2010 04:29AM Main British Car: 1974 Land Rover Lightweight V8 |
Re: Vibration at. “2000 rpm in neutral or moving
So you can feel it, not just hear it.
Some things I'd look at: Soft engine or trans mounts, especially if oil is leaking onto them. Exhaust hitting against something. Exhaust resonance. Engine firing order wrong. Not firing on one cylinder. Harmonic damper (front pulley) loose. Flywheel loose. Clutch cover loose. Or pretty much anything loose that has a vibration frequency which equates to 2000rpm. Vibrations and resonance can be a right pain. Ivor |
MGBV8 Carl Floyd Kingsport, TN (4512 posts) Registered: 10/23/2007 11:32PM Main British Car: 1979 MGB Buick 215 |
Re: Vibration at. “2000 rpm in neutral or moving
The flywheel should be good to go as purchased. The engine is internally balanced. Though, if not torqued properly...
If you are using an original harmonic balancer/damper, it is very old. Check the condition of the elastomer. [fluidampr.com] |
88v8 Ivor Duarte Gloucestershire UK (1041 posts) Registered: 02/11/2010 04:29AM Main British Car: 1974 Land Rover Lightweight V8 |
Re: Vibration at. “2000 rpm in neutral or moving
Quote: Yes, one thinks of them as permanent, but eventually the elastic centre debonds and impairs the damping. That happened with my TR6, detected when it became apparent that the timing marks were out. Didn't cause a vibration in my case, but it could. Ivor |
billymgb1000 bill gaulin harrisville R.I. (74 posts) Registered: 11/30/2012 12:31AM Main British Car: 1974 MGB V8 LS1 5.3 |
Re: Vibration at. “2000 rpm in neutral or moving
I don't know what you have done so far in your trouble shooting but I would start with unhooking the fan belts. Just to eliminate the easy stuff first. I had a vibration a while back like yours, it was there going down the road or just sitting there. Turned out the alternator was the problem. Just a thought. Good luck brother
Bill G |
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Re: Vibration at. “2000 rpm in neutral or moving
I had the engine rebuilt, Had bad harmonic balancer, flywheel was out.
the engine builder did a great job. 5000 rpm's in second gear what a fun car to drive. after all this I think I might sell it. |
88v8 Ivor Duarte Gloucestershire UK (1041 posts) Registered: 02/11/2010 04:29AM Main British Car: 1974 Land Rover Lightweight V8 |
Re: Vibration at. “2000 rpm in neutral or moving
Thankyou for coming back to let us know.
Hope you find a good home for the car. Ivor |