The candidate for this repair is a 1990 VW Golf ( twist beam rear axle). I've already polyurethaned the motor mounts, so I've got all the gear ready to go.
Apart from the increase in NVH, is there any downside to this ? I'm assuming that filling the voids in the torn bushing will take care of any excessive movement, clunks etc and give me a good as new bushing.
does it work when the bushings have already gone?
mad_machine wrote: does it work when the bushings have already gone?
Good question. That's what I'm wondering.
I wouldn't do it for THOSE bushings. They're supposed to flex a certain amount, as part of the passive steering in the rear suspension. The bushings are ramps that provide side-load understeer to help counteract the side-load oversteer from the beam flexing.
I've used Right Stuff with middling success, sometimes it sticks, sometimes it doesn't. Clean new bushings seems to be the best bet for success.
Window weld blows. Everything I have tried it on, it only lasts a few thousand miles before flex squishes it right back out. I've had much better luck with casting urethane from McMaster.
i've never, NEVER, had window weld fail. at all.
Only ever window welded old broken motor mounts. 100k miles later they're still intact and working great. Not familiar with VWs or the bushings thereof, but on DSMs, the big floppy factory bushing in the rear trailing arm can benefit from stiffening or replacing with a heim joint. That reduces/eliminates the passive rear steer and dials out a lot of the built in factory understeer.
I filled a trashed/broken motor mount with windshield urethane and it seems to be holding up great.
I've used windoweld on several car motor mounts with great sucsess.... But they only see a sheir (?) Load.... Seems the suspension load is going to be very different
Sent fom Android device
donalson wrote: I've used windoweld on several car motor mounts with great sucsess.... But they only see a sheir (?) Load.... Seems the suspension load is going to be very different Sent fom Android device
shear.. the word you were looking for is shear..
I recalled literally as it was sending the post... but being on a phone I was to lazy to do a ninja edit... everyone knows I can't spell... so ;-)
Maybe you could try this PMC-770 (Shore 70A). http://www.smooth-on.com/Urethane-Rubber-an/c6_1117_1147/index.html
There's also PMC-780 (80A), and PMC-790
3lbs trial kit goes for between $30 and $40.
"Design tips to improve service life of urethane components bonded to metal. "
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