View Full Version : vibration after torque converter install
rabiddawg
03-28-2008, 05:59 AM
problem is a slight vibration @around 4200 that i think is the torque converter.
im thinking that maybe reclock the converter to the flexplate ?
you think that might help?
zipper06
03-28-2008, 06:09 PM
If it's possible, i would slide the trans back with the converter engaged to trans. enough to get an indicator up to the hub and check run-out while spinning the converter by hand, more than .002 it could be the problem. If there is no run out open up the flywheel hole 1/64" in case there is a bind.
JMO
Zip.
bjuice
03-29-2008, 07:39 PM
do you have the converter shimmed up to the flex plate? if so how much?
rabiddawg
03-31-2008, 08:16 AM
didnt need shims
but I think the vibes are from a bad/wrong balancer.
still vibrates with converter disconnected
jmarksdragster
03-31-2008, 08:09 PM
What engine?
rabiddawg
04-01-2008, 05:50 AM
406 smallblock
johnracer
04-01-2008, 11:00 AM
Is it internally or externally balanced? Stock 400 is external but the trend is to internal balance them for hp use. Flexplate and dampner are different depending on which way which way it's balanced....
rabiddawg
04-01-2008, 12:08 PM
its extrenally balanced for sure
jmarksdragster
04-01-2008, 12:40 PM
If you are using stock or stock replacement pistons , rods and crank you need the balancer and flexplate/flywheel for a 400. If any have been replaced with aftermarket parts the weight changes and the assembly needs to be balanced.
olds48
04-01-2008, 07:23 PM
do you have the converter shimmed up to the flex plate? if so how much?
How much shim is acceptable?I'm running 1/4" :oops: Both converters I've run needed same amount.Seems like alot to me.Half tempted to order next converter setup for a mid-plate just to take up the slack