hpjspdr4l

okay im getting fed up. i really dont know what the prob is and i dont know whether its me the crappy driver or the car. in the last six months ive replaced 17 tranny mounts. ive changed it, a mechanics changed it, pepboys changed it, the pontiac dealership changed it and now ones seemed to have any clue as to why it keeps blowing out so easily. im about to junk the car cause its getting ridiculous. usually after its changed a day or two goes by and then one day ill hammer on it just drivin wit freinds and wham it comes up and hits the underneath of the car and i need another one. so if anyone out there can help a lost man please do so any help is encouragement at this point. thanks
:hail:

ede

ES poly mount=bullet proof

Cam28_boy

When I replaced mine with the polyurethane one I never had that problem again. Money well spent.

ede

and the cost is the same for ES and stock mounts

Cam28_boy

you might also want to change the torque arm clam shell mount also. Thats what mine was doing so I changed both.

Screamin'87GTA

I was having the same problem on a non thirdgen car.. If you keep blowing one mount there is a good chance that one of the other mounts is shot.... this puts alot of the torque on one mount. the mounts arent designed to handle all that pressure a piece.

ede

screamin unless you car is a lot differant than the ones i've saw or worked on there's only one mount

mystikkal_69

iTrader: (2)

if a motor mount is bad that will lead to the tranny mount breaking even faster. get an es or prothane poly mount and be done with that crap. i went throught he same bs. the poly mount saved the day.

hpjspdr4l

so where can i find a ploy mount? can i just ask for that at the parts store instead of just getting the rubber one or what ever i keep replacing it with? and i think ill replace the engine mounts also who knows anything at this point will help

RB83L69

http://store.summitracing.com/partde...NS%2D3%2D1108G

Don't bother with the engine mounts. They rarely fail, and they're an incredible PITA to change. Enormous maze, but not even a crumb of cheese at the end.

ede

1-800-345-4545 tell them what you have and what you need for it, have your credit card ready.

mystikkal_69

iTrader: (2)

engine mounts rarely fail bah they always go out. rubber is so susceptible to the elements. once again poly to save the day. i will agree changing out the motor mounts is a major pita.

thirdgen88

I agree on the motor mount pita... I was changing one back when I had the v6 in my red 88 bird (back in the day.. ) and there is nothing worse then working on motor mounts which involve no fluids whatsoever, and cracking your heater control valve from lifting the motor too high and showering yourself with antifreeze... Talk about making an already crappy job ten times worse.

However, the poly mounts (which I switched to once I did the v6-v8 conversion) are the ... well.. they are the shizzie y'all...

MrDude_1

thistime, i strongly disagree with what you're reccomending..

its obvious somthing is wrong here. he should not break mounts like that.


putting a stronger mount like that will not fix the problem. it will only put the stress elsewhere... like on his tailshaft..... it would suck to break that....



now most likely, IMO what it is, is the motor is moving too much.... i would replace the motor mounts (yes they are a PITA).

i would put a poly TQ arm mount in at the same time, or atleast grease the one thats in there.

ede

mr dude i'm going to strongly disagree with you. everyone and his brother has broke trans mounts because of the way gm did the torque arm. it's like they wanted it to break trans mounts.

MrDude_1

i agree it stresses the crap out of the tailshaft and the trans mount.... but he really shouldnt be breaking mounts that fast


perhaps im barking up the wrong tree on a solution, but i do think theres somthing else wrong with this car to be breaking mounts this fast.

MrDude_1

btw im not saying a poly mount isnt a bad idea... i love em


i just think he needs to find and fix the problem first... whatever it is.

Tony89GTA

iTrader: (7)

17 tranny mounts!!! How much power you making out of this bird?

RB83L69

I think he's exaggerating. Looks to me like his dad has had it replaced it 3 times and he has managed to tear it back up again each time.

It's a 2.8, so it has no power. But if you rev it up enough and dump the clutch, it doesn't matter how much power it has, because that will store up enough energy to destroy parts like this. Read what the guy says; it's obvious they aren't just up and breaking on their own, they're getting some help.

It's amazing what an abusive driver can tear up. I'm glad I'm not that kid's dad, I'd be getting pretty tired of paying his repair bills I suspect.

Tony89GTA

iTrader: (7)

Ya I know he's exaggerating a little I'am just playing along

Get a polly mount! and have your motor mounts checked out.

GofasterFirebird

iTrader: (3)

Ya, like all the rest, before I got a poly mount, I would break the stock trans mount in about 15 minutes. My engine was a stock 350 TPI with motor mounts that were not broken. The stock or DAP mounts last awhile if you get that torque arm off the back of the trans, though.

And, abusive driving is a bad thing? I thought that was what these cars were for? If I had a kid and he/she wasn't dumping the clutch every so often, I'd be alarmed. Of course with dumping the clutch comes the consequences....

hpjspdr4l

ya there was a little exageration in their ive only gone through 7 but it fells like 17 but either way in 6 months that still seems like to much. im gonna change the mount to a poly and try the engine mounts too cause anything at this point i figure is to the goodso when their changed ill let you know the results. it should be done by this sunday.

firechicken_3

iTrader: (4)

i'll believe him and i'll believe that there is another problem, when my car was a 2.8 i broke 3 in about 10 months, and mine was auto,

swapped to a 305 and auto, then the same 305 and a 5 spd, i have never broken another one, at the time of motor swap NEW MOTOR MOUNTs, so either A. my old mounts were so loose they didn't do much, or B. My 305 is very very wimpy which is not the case.

RevvedRS

In any, case there is no way that 7 tranny mounts should go in 6 months. Not on a 5.0 not on a 5.7 and DEFINATELY not in a v-6.

I would check my motor mounts, more specificly the driver's side mount. It's pretty easy.

Park the car, raise the hood, put the car in 1st gear hit the brakes and the gas at the same time.

The motor should move a little but is you see the left side of the motor rising more than an inch or so, the drivers side mount is trashed.

Most likely that is the problem, since the passenger side wants to bury in the shock tower when stand on it/torque load/dump clutch ect.

If that is not the case, do the same thing in reverse. If the passenger side of the motor starts floating out of the engine bay that side's mount is gone.

Basically what you are doing is loading the motor mounts agaist driveshaft torque. Just about every one with a third gen has had tranny mount issues but it sounds like your drivetrain has some serious lateral motion problems. If your motor mounts aren't bad check you LCA and torque arm because there is a problem in the rear end IMHO.

Just my .02

PyRo9862

Umm, if you had a mechanic change it just go back to him. "yeah you installed this mount, and its broken again fix it". He has to warrenty his work for atleast a day or two. Just keep going back
I had the steering damper done on my jeep about 4 times because the guy coulnd't figure out what was wrong with it. Only paid for it once. Turned out I was right about what was wrong with is, the "stupid kid who knows nothing" proved him wrong