getting ready to rebuild the suspension on my car. anyone have any experience with polyurethane bushings? good-bad-indifferent
Poly bushing **** rocks. If you can install good quality OEM rubber bushings, do so. Spend your money on shocks if you want cornering performance. Here is how I got rid of mine: http://www.dogfightmag.com/forum/showthread.php?288-I-really-don-t-like-Polyurethane-bushings
-NO to poly bushings- they dont have any internal twist like a rubber bushing but they dont have the desirable qualities of a solid suspension link, either. get quality factory type rubber.
The National Street Rod ***ociation sent a letter to all clubs. They recommended greasing the inside and out side of the poly bushings when installing them. The grease is to prevent failure. I do not know if the grease works.
My experience with polyurethane bushings on a O/T 78 El Camino was they really tightened up the handling and steering response.Perhaps new stock bushing might have done a good job too. The stock bushings all seem to made in China,yes? Poly bushings from places like Energy Suspension are made in the USA,yes? Poly bushing squeak? you bet. The grease really helps.
some love 'em, some hate'em. I hate 'em but if you use them, you don't need grease, just sand the shine off the inner and outer rotating surfaces and they won't squeak. don't forget the face against the washer either. Oh, they won't last as long as rubber either. Dave
i think they will last longer with a little grease. The grease will not hurt and this was a safety bulletin published by the NSRA. The manufacturer recommendation should be included with the bushings.
Same thing with my 65 Malibu SS. They made that car handle like a sports car,but they did squeak on hot days.May be the graphite impregnated ones don't,but they improve handling on 60's &70's cars.
Polly graphite bushings work great with out the problems of regular poly ones. have them in 78 elcamino and 60 chev Gary
i used the polygraphite ones from PST in my malibu and i like em! they dont squeek and they tightened everything up. as for how long they'll last , i dont know yet. the original rubber ones still looked fine, but its hard to tell visually how worn they actually were, until you change them and feel the difference.
I used them in an o/t buick grand national. They make the ride stiffer, but I used poly in the suspension and rubber for body mounts. If you go poly use the grease!
I've had the Polygraphite ones in my Pontiac for about 20 years, so I don't agree with the statement that they fall apart. They did a great job of stiffening up the ride and handling and as mentioned you do need to lube them a little when you install them. I've also heard to stay away from any of the colored ones as they have a greater tendency to squeak. After having said all that though, I just pulled them out of my car recently because I wanted to soften up the ride a little. The polygraphite ride does tend to be a little harsh.