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Username Post: vibration        (Topic#351544)
frstcar 
Poster
Posts: 6

Reg: 08-07-17
06-12-18 07:44 PM - Post#2736777    

Recently installed Tremec tko500 in my 63 409. Have now developed a bad vibration starting at 1800 RPMs. Will do it whether on the road or sitting still with clutch released or depressed. Feel it worse in the seat of your pants. Have had tranny out 3 times, can't see anything, no interference with the floor pan. Had driveline shortened, balanced, and installed urethane carrier bearing. Any ideas?????



Edited by frstcar on 06-12-18 09:31 PM. Reason for edit: No reason given.

 
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Tri5man 
Valued Contributor
Posts: 3597
Tri5man
Loc: Possums Crotch, KY
Reg: 06-26-07
06-13-18 12:50 AM - Post#2736797    
    In response to frstcar

First off you need a slip joint on your driveshaft if you using a urethane carrier bearing support due to it rigidity. Do you have one?

I wouldn't suspect thats the cause of your vibration as you have it moving and stopped, clutch in or out. Sounds like it could be engine related. I had a wierd vibration once that turned out to be water pump bearings.

Gary



 
55Brodie 
Contributor
Posts: 151
55Brodie
Age: 66
Loc: Little River, SC
Reg: 12-26-15
06-13-18 03:05 AM - Post#2736801    
    In response to frstcar

Pilot bearing? Clutch assembly imbalance?



 
frstcar 
Poster
Posts: 6

Reg: 08-07-17
06-13-18 05:46 AM - Post#2736810    
    In response to 55Brodie

Has new pilot bearing and clutch has been balanced



 
YOUNG57 
Frequent Contributor
Posts: 1040

Loc: Tennessee
Reg: 12-06-10
06-13-18 08:00 AM - Post#2736819    
    In response to frstcar

With the clutch pedal depressed the transmission, drive shaft, carrier bearing and pilot bearing are disengaged (out of play). Vibration has to be forward of transmission.



 
frstcar 
Poster
Posts: 6

Reg: 08-07-17
06-13-18 11:23 AM - Post#2736838    
    In response to YOUNG57

My thinking also.



 
Tri5man 
Valued Contributor
Posts: 3597
Tri5man
Loc: Possums Crotch, KY
Reg: 06-26-07
06-13-18 04:56 PM - Post#2736874    
    In response to frstcar

I'd start eliminating engine accessories by disconnecting belts.



 
junky 
Valued Contributor
Posts: 2504

Loc: Northeast CT
Reg: 06-27-10
06-13-18 08:45 PM - Post#2736914    
    In response to frstcar

Have you checked the harmonic balancer? It has a hash mark that lines up with the top dead mark on the outer balancer. When they fail, you will see this mark move out of alignment, and the outer ring slips on the rubber separating the inner and outer parts of the balancer.

Never argue with an idiot. He'll drag you down to his level, then beat you with experience.


 
Chevrobert 
Valued Contributor
Posts: 3482

Loc: Braintree, Ma. USA
Reg: 06-14-08
06-14-18 03:19 PM - Post#2736976    
    In response to frstcar

Nobody's mentioned it so....,
Have you checked your
transmission cross member
motor mounts,
exhaust and hangers etc?
Sometimes things happen at coincidental moments
AND
have nothing to do with
the new addition.

Bob
'64 Impala SS
'77 Pontiac Ventura SJ

Ain't to proud to think out loud.


 
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