Ezrider

i recently started having a vibration from 65-80. it gets real bad about 75 then starts clearing up and is compleetly gone at 80. it is worse when accelerating, wich makes me thing u joint, whats your oppions?

Dbeck002

i have this identical problem in every way you described. i got new prothane engine mounts and tranny mount and lubed up the U joint nipples (lol) and the vibrations decreased dramatically. do these mods if your engine mounts are about gone.

Ezrider

well i did look at the motor mounts they appear intact, but i did notice that the rubber had a little cracking, what is the best way to check your motormounts? put a jack under the motor?

Ezrider

also where did you get the poly motormounts from and how much did they cost?

Dbeck002

heres an easy way to check your mounts, this is how i did it.


get under the hood and rev the engine manually by pulling on the throttle cable. if you see the engine torque over more than about 6 or 7 degrees than you need new mounts. mine would torque over a good 20 degrees, my mounts were completely ruined. now when i rev my engine with the prothanes the engine doesnt move and the whole body flexes, its rather sexy....

Dbeck002

summit - prothane engine mounts 5.0 mustang - 100 bucks shipped.

Ezrider

another thing i thought of is.... if it was the motor mounts wouldent i be having it pop outta gear on me?

Dbeck002

i dont see why it should pop outta gear because the engine mounts. my mounts were worse than anyones on this board i garauntee, they came out in PEICES, never popped outta gear...

Ezrider

well i had the motormounts go out in an old beater car once and it would always pop outta gear then one day i noticed the rubber peice in the middle of one of the motor mounts was compleetly gone, then once i replaced them it stoped poping out of gear

Ezrider

im axious to get this problem taken care of cause it bugs the crap outta me cause every time i get on the freeway i eather have to go to damn fast or to damn slow