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-   -   Top Loader "rumble" (http://www.clubcobra.com/forums/david-kee-toploader-transmissions-inc-speak-david/80177-top-loader-rumble.html)

convincor 06-28-2007 08:16 AM
Top Loader "rumble"
 
Once in a while will cruise'n on the hi-way, fourth gear, the trans will start to rumble. Slight vibration, sounds like a bad bearing but then goes away.
Not sure on the mileage as I bought it used. Any idea's????? Time for a rebuild???

Dangerous Doug 06-28-2007 08:40 AM
Sure it isn't sound/vibration transfer from the differential or u-joints? I'd climb under and see if there is any excessive play in the differential or u-joints.

What rpm does it usually vibrate at? Can you duplicate the effect with the driveshaft disconnected?

DD

blykins 06-28-2007 09:02 AM
Driveshaft out of balance at that speed maybe?

convincor 06-28-2007 07:16 PM
If drive shaft it would do it all the time. U-joints and rear are fine. It's definitely trans. It's only done it in fourth gear at cruise speed (60-70mph) 2600-3000rpm range.

blykins 06-29-2007 03:03 AM
I disagree, if a driveshaft is out of balance at a certain rpm, it will vibrate. I had a 2002 Mustang GT that I put a 4.10 gear in. Since the driveshaft was spinning fast wtith the low gear (and it wasn't balanced for it), at about 85-90, it would be spinning in a range where it would vibrate the rear of the car.

trularin 06-29-2007 05:59 AM
I just lost a weight off the flywheel. It has a RPM attached to it...very anoying.

convincor 06-29-2007 07:14 AM
Quote:
Originally Posted by blykins
I disagree, if a driveshaft is out of balance at a certain rpm, it will vibrate. I had a 2002 Mustang GT that I put a 4.10 gear in. Since the driveshaft was spinning fast wtith the low gear (and it wasn't balanced for it), at about 85-90, it would be spinning in a range where it would vibrate the rear of the car.
By all the time I mean at the said rpm. Doesn't alway's do it at said rpm. Only once in a while then stops without rpm change.


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