Thread: Polyurethane bushings concerns!! Help

Your car will shake a lot, but the engine wont move, and put slightly more power on the ground.

It doesn't shake a lot. You'll notice it, but its not bad.

If you have poly bushings all over the board, then it won't shake too much. And it'll subside over time

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On a scale of one to Michael J. Fox, I'd say it would put you somewhere in the realm of a coin-operated massage chair.

If you are a pretty stock setup, I'd suggest the following

Regular motor and trans mounts, no need for poly
Poly mounts at the front of the radiator support (square ones)
Regular dogbones

That'll keep your engine vibration reasonable. A lot of guys like Buickman104 and myself etc changed the radiator and dogbones to poly and regretted it. I've driven a couple of cars with the poly lower mounts (engine/trans) and it amplifies the vibration even more. This is a big power mod that isn't needed on a reasonable car.

As for suspension, I'd poly the heck out of everything. You'll love the way it drives after that. Doesn't stress other things, just firms it up and makes it handle.

Poly everywhere?

Your dentist will love you.

When it vibrates all of your fillings out.

And your leg goes numb driving on the highway for more than 10 minutes.

Ask my anchor when I drove to Iowa, with no cruise control...aka...my right leg. I used my hip to control the pedal...since I nearly had nerve damage after that trip.

Proes? Dat injen nevah moovs. Et poots powah 2 teh groawnd lik no 1ez biznaz

As far as upper engine mounts I flipped the big end and poly small ends. Definitely nicer and firmer without being too harsh, as mentioned before it will subside a little or you get used to it..

Originally Posted by BillBoost37

If you are a pretty stock setup, I'd suggest the following

Regular motor and trans mounts, no need for poly
Poly mounts at the front of the radiator support (square ones)
Regular dogbones

That'll keep your engine vibration reasonable. A lot of guys like Buickman104 and myself etc changed the radiator and dogbones to poly and regretted it. I've driven a couple of cars with the poly lower mounts (engine/trans) and it amplifies the vibration even more. This is a big power mod that isn't needed on a reasonable car.

As for suspension, I'd poly the heck out of everything. You'll love the way it drives after that. Doesn't stress other things, just firms it up and makes it handle.

Agreed with Bill. My vibration was bad enough that I could hear the window regulator cables rattle around inside.

Originally Posted by matt5112

with a cam perhaps.

stock cam its pretty unnoticeable

With the stock cam the vibration was pretty dam noticeable. Like I said though, it goes away after awhile

It doesn't go away..you learned to tolerate it.

yeah youre probably right bill. but yeah i have full upper polys, rad and bones

I know I'm right.. you got rattled and now you probably even have the jitters when you walk... lol

lol sometimes...its fun though whenever i got a chick in the car and i open the cutout and go wot....i gotta ask if her lips quiver lol

Originally Posted by 99pgpgt

lol sometimes...its fun though whenever i got a chick in the car and i open the cutout and go wot....i gotta ask if her lips quiver lol

You have vibration at WOT?

you would too if you had an open downpipe.

Open downpipe ftw. So how does poly compare to open Dp?

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