Bad dogbone bushings cause these problems ?

Started by Mike J., May 15, 2003, 12:47:09 PM

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Mike J.

What are all the problems that bad dogbone bushings cause by letting the motor torque over.  Electrical?Transmision?Performance?Shorting out?
One that I know of is that your cone filter can get squashed and torn if it is up against the intercooler.  Input/Output please.
Twin black 90's

1trucavalier

you can clearly see if your dogbones are bad.  grab the dogbone and wriggle it vigorously if it moves around the bushings are shot.  go to chris A's site and just do the dogbone mod. $35-40 total.  Its a POS design from the factory so its WILL go bad over time.
hi-flow intake, straight pipe, dsm bov, 24lb inj,  polished upper intake, turbo, and frt valve cover.

bwawuz02

or you could get the ffp poly dogbones. which are NIIIICE!
'93 White Z34 - Dreaming of Boost!

Mike J.

I wasn't aksing how to detect bad dog bone bushings, but what are all the adverse effects that can be attributed to having bad bushings.   :?:  :?:
I have heard various conditions but please, lets make a list for everyones benefit.
Twin black 90's

bwawuz02

sorry, if the bushings are bad you'll feel the car shift really hard. with the poly bushing the engine isn't able to move much at all, which some people think helps put more tq to the ground, but no ones ever done a dyno test of it. bad bushings are not a good thing, but won't REALLY hurt anything unless you neglect to replace them.
'93 White Z34 - Dreaming of Boost!

1trucavalier

your engine will move big time and you will loose torque.  you will also if its real bad hear the metal where the bushing wore out banging against the bolt in the motor mount fork.
hi-flow intake, straight pipe, dsm bov, 24lb inj,  polished upper intake, turbo, and frt valve cover.

4PASNU

I can confirm the hard shifts because of the dogbone bushings.  My car felt like it was going to lay the tranny on the ground everytime it shifted.  The stock bushings were shot.  I could rock my engine back and forth a good 3-4 inches.  I got the FFP poly dogbones and now everything is nice and tight.
Mike Ruckhaber
Currently own a 1990 Black TGP Stock.
Previous owner of a 1989 TGP: FFP Dogbones, K&N, KVR rotors/pads. Exhaust: 3" hi-flo cat, Dynomax 2.5" Ultra Flo mufflers. 
2000 GTP

fatguy

I've had more serious problems when mine went bad.  The engine moving around can cause the pressure fuel line to bend and rub at the crimp and spray raw fuel onto that nice hot ignition source.  About 15 hours of rewiring everything and cutting away melted plastic made me fully aware of how bad this problem can be.  DON'T TRY TO SAVE MONEY by letting them go.  I had flames coming from the hood louver and burnt everything between the master cylinder and battery in only about 30-45 seconds.
If your dogbones have been bad for a while now, check the fuel lines for any wear!!!!!!!!!!!!!
Corey
Corey McCarthy

mongoose

Replaced mine for ~$15 a piece - made a world of difference. Not afraid to stab it anymore (no more *clunk* *clunk*)
It's one of the easiest/cheapest maintenance procedures one can do, so I learned that there is no reason to have wasted old dogbonez!

Regards
Chuck
Chuck G. "mongoose"

"Been borrowing Occam's Razor since 1992 - Haven't cut myself yet."
chuX0r.org - Arcade Games, Unix, Coding, & other geeky foo

Black Pheonix

flames out the louvers :eek2: , that has to suck :oops: , but i bet it looked real cool
1990 B-TGP

        Black Pheonix

fatguy

Now that I look back on the whole experience, I did look pretty cool.......Then, not so much :shock:
Corey McCarthy

4PASNU

Quote from: fatguyNow that I look back on the whole experience, I did look pretty cool.......Then, not so much :shock:

I'm with the "Then, not so much", I think I'd cry :cry: if that happened to me.
Mike Ruckhaber
Currently own a 1990 Black TGP Stock.
Previous owner of a 1989 TGP: FFP Dogbones, K&N, KVR rotors/pads. Exhaust: 3" hi-flo cat, Dynomax 2.5" Ultra Flo mufflers. 
2000 GTP