trans mount

Anonymous · Post by **Anonymous** » Sat Jul 15, 06 6:40 pm

anyone put a poly trans mount in before? if so what was the ride like afterwards? i have put one in and the whole car vibrates now, at 2500 rpm smoothes out a little at 3000 but still not right thought i could live with it but can't, need a good rubber one for the nats anyone got one?

Anonymous · Post by **Anonymous** » Sun Jul 16, 06 10:11 am

hi steve, just had both joints done, and balanced at propshaft services at gateshead, dave r thinks it might be the prop angles, other things i have to check is motor mounts, harmonic balancer, and the crank balance apparently the motor was done in the sates a few years ago new pistons rods etc, and ill bet a rebalance was not done , i just wondered if any one had put in a poly, and if it dramatically changed the ride, thanks for your reply, bye for now trev

MilesnMiles · Post by **MilesnMiles** » Sun Jul 16, 06 6:05 pm

Trev, my car suffered from bad vibes so i replaced the trans mount (rubber) and the front prop UJ. Result= worse vibration. In desperation, i turned the prop thru 180deg and its been perfect ever since. No idea why

Anonymous · Post by **Anonymous** » Sun Jul 16, 06 6:19 pm

Trev,
I had no prob swapping the old rubber with a poly mount, but it didn`t cure the vibe I had. Still fighting that one and I still think it`s wheel/tyre related.

MrNorm · Post by **MrNorm** » Sun Jul 16, 06 10:13 pm

I used one and it was absolutely fine, I guess it might be showing up a problem elsewhere (prop angle as suggested could be one), but I'm surprised. It certainly should not cause a vibration

Anonymous · Post by **Anonymous** » Mon Jul 17, 06 7:57 pm

hi fellas thanks for the input, gonna turn the prop first , then jack it up and have a look with the wheels off, try the easy stuff first eh! after that i will just put up with it till after the nats,. then get stuck in

Anonymous · Post by **Anonymous** » Mon Jul 17, 06 8:45 pm

i fitted a poly mount and the car still vibrates as before, just thought it was a mopar thing!!!!
sorry to hyjack the thread but-
why should a prop need balancing? wasn`t it done at the factory?, why would it loose it`s balance?

Anonymous · Post by **Anonymous** » Mon Jul 17, 06 10:29 pm

hi sean, i suppose it would be done at the factory but to what tolerence? these mopes seem to be a bit hit or miss in quality controll somtimes, the balance thing, well the way i look at it is it's a bit like fitting a new tyre to your wheel, all tyres have a heavy spot and it needs balancing out so at speed it runs smoothly, and i imagine fitting new uj's and bearings has a similar effect??? can anyone enlighten us on this one?

Richard · Post by **Richard** » Sun Sep 10, 06 7:54 pm

just to muddy the water even more-

The headache inducing throbbing vibration which annoyingly manifested itself at exactly 70 mph is finally gone.

After messing with driveshaft angles and balance,I swapped the 'poly' transmission mount for an old standard squashy rubber one I had lying around. Whilst not exactly in the Lexus category for NVH normal service has now been resumed.

Just thought that being as this is an easy check might be useful to someone.

Alex · Post by **Alex** » Sun Sep 10, 06 8:00 pm

That's good to hear, I know that was bugging you !