Help understanding the relationship between flywheels and engine vibrations
12-21-2012, 07:43 AM
#11
3rd Gear Member
Join Date: Nov 2012
Location: North Carolina
Posts: 574
OK I have replaced clutches in 3 of my personal vehicles without resurfacing the flywheel. I have never had an issue. I agree with looking at the whole picture before diving right in and ripping the tranny. If everything else is fine the by all means have the flywheel balanced.
Take note and see if the frequency of vibration changes with engine rpm.
Take note and see if the frequency of vibration changes with engine rpm.
12-21-2012, 11:41 AM
#12
5th Gear Member
Join Date: May 2009
Location: kentucky
Posts: 2,241
Im guaranteeing this is the problem. I just got done doing the same thing with my GT. If the flywheel was not resurfaced, it can cause a variety of different vibrations. I suggest getting the flywheel resurfaced and then diagnose the problem from there. It will get a lot of noise out of the way and you can concentrate on other noises/symptoms.
Just saying that this is a VERY necessary step if you want your problem to be fixed.
Just saying that this is a VERY necessary step if you want your problem to be fixed.
01-03-2013, 03:11 PM
#13
Thread Starter
Join Date: Jul 2005
Posts: 31
Thanks everyone for the advice. Since you were kind enough to take the time to respond, then I should do the same in return (even if I feel a bit sheepish in doing so).
So, finally got a chance to get under with a friend, drop the tranny and check out the clutch, etc. As I said before, I hadn’t machined the fly wheel the first install, wasn’t aware just how important that could be- lesson learned. I took the wheel down and had it resurfaced. Another thing I noticed, the TOB was dry. I know we greased it originally, but obviously not near enough. Pilot bearing was fine (yes, we did remember to install that originally, so got something right).
The pressure plate was scored/marked a bit, so I carefully sanded down. Got it pretty cleared up. Installed everything back up, new TOB with healthy amount of grease, shiny resurfaced fly wheel, cleaned up pressure plate, tranny back up and took her for a ride last night.
Difference was night…and…day… My gosh, clutch was a smooth as butter and shifted perfectly, no vibrations, no engine shaking, and not a peep from the TOB. I definitely learned my lessons on this. Really appreciate everyone’s input.
So, finally got a chance to get under with a friend, drop the tranny and check out the clutch, etc. As I said before, I hadn’t machined the fly wheel the first install, wasn’t aware just how important that could be- lesson learned. I took the wheel down and had it resurfaced. Another thing I noticed, the TOB was dry. I know we greased it originally, but obviously not near enough. Pilot bearing was fine (yes, we did remember to install that originally, so got something right).
The pressure plate was scored/marked a bit, so I carefully sanded down. Got it pretty cleared up. Installed everything back up, new TOB with healthy amount of grease, shiny resurfaced fly wheel, cleaned up pressure plate, tranny back up and took her for a ride last night.
Difference was night…and…day… My gosh, clutch was a smooth as butter and shifted perfectly, no vibrations, no engine shaking, and not a peep from the TOB. I definitely learned my lessons on this. Really appreciate everyone’s input.
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