[DeTomaso] (no subject)

[Asa Jay Laughton]

I'm not so sure it's your clutch.

At what speed does it vibrate?
 From standstill up to when?
Does it vibrate if you are sitting still, no movement?
Does it go away at higher rpm if you sitting still?
Does it do it sitting still with both the clutch pedal depressed and  
not depressed?

If it's -not- vibrating when sitting still, but only when moving, it's  
something else, like half-shaft bolts.

If it's vibrating at a stand still, does it do it both with the clutch  
pedal in -and- out?

If yes with pedal in (and gear shift -in- a gear) but NOT with pedal  
out (gear shift in neutral), it's most likely a pilot bearing.  With  
shifter in gear and clutch pedal -in-, the input shaft is not moving  
and the engine is turning, versus with the trans in neutral and the  
clutch pedal out, the input shaft is mated to the flywheel and turns  
at the same rate as the engine.  So if you have vibration with pedal  
in but not out, it's most likely a pilot bearing.  If you have  
vibration at a standstill with both pedal in and out... I'd start  
suspecting something else.

If it does not vibrate at all at a stand still, then it's something  
from the output of the transmission to where the rubber meets the  
road.  This could cover everything from the differential in the trans,  
to the half-shaft bolts, to bearings in the rear uprights.

Are you near any other Pantera owners on this list?  Get someone over  
to help you narrow this down.  See what you can answer from above and  
let's see if we can get you any closer.

Something I typically don't recommend.  If you are moving and can feel  
the vibration... shift to neutral.  Does it go away?  If yes, it's  
something in the output of the transmission.  If it does not go away,  
then shut off the engine.  Does it go away?  If yes, it's anything  
engine up through input shaft.  If no, then it's in your wheels and  
bearings.

Hope that helps.
Asa Jay

Quoting sean mundy <seanmundy at hotmail.com>:

>
>
> I need some advice again.   A few months ago I brought this up in   
> the forum but I still have the same issue with clutch chatter and   
> vibration.
> Before installing a new clutch and resurfacing the flywheel a few   
> months ago I didn’t have any significant engine vibration.
> After installing a new clutch I now have significant clutch chatter   
> and a very strong vibration from the engine.
> With the new Quella – Mcleod clutch/pressure plate, pilot needle   
> bearing and resurfaced
> flywheel the motor vibrates a whole bunch in the 2500 -3000 rpm   
> range but lessens a bit as the revs climb from there.
> This is occurring with the clutch engaged or disengaged.
> I’m assuming the vibration is solely related to the new parts   
> installed because I had no vibration previously.
> It’s actually very uncomfortable to drive now as the whole car   
> resonates and vibrates terribly at this rpm on the freeway in 5th   
> gear at 60mph.
> Besides, I don’t know if I’m damaging the engine running it with   
> this severe vibration.
> Figuring something was wrong with the parts I removed them and took   
> it all back to the machine
> shop and had the flywheel balanced with the pressure plate.   I   
> reinstalled the balanced set but the engine
> is still vibrating exactly the same as before and I still have   
> clutch chatter.   My harmonic balancer seems fine and the motor   
> mount bolts all are tight.
> Before I break my back AGAIN removing everything I would like some   
> ideas on what my next steps should
> be to make sure this last attempt fixes the problem for good.
>
>
> Thanks, Sean Mundy
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-- 
Asa Jay Laughton - sent from somewhere other than home
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