Greetings,
Does anyone know if PolyBush still make the gearbox mount center bush and spring seat? Can't find them on their website.
I am planning to replace these mounts (and the spring) and really want to use polyurethane if possible.
Best wishes,
Charles

The spring seat rubber, only ONE, is OE that I know of.

The Poly are still out there, although I have not needed one for 15 or more yars.

This PDF might help you, or simply some coffee break reading.

I reckon quick Google of CAC3227, with possibly "poly" included should find something.
Others will slide in when their coffee is done and provide other sources.

Dear Grant,
Many thanks!
Great reading.
Best wishes,
Charles

Baxtor, Bravo! You're definitely on the right track with your 'device'. The problem with the upper shock mount is that the top of the shock (the threaded rod) is NOT rigidly attached to the body of the car. The foam or urethane bushing inside the shock mount doesn't prevent the top of the shock from moving forward/backward or side to side. It does limit it's vertical travel until the bushing disintegrates but that's insignificant compared to the lateral motion. The lateral motion creates shear forces that tear the bushings apart rather quickly. Tying the top of the shock directly to the body is essential in significantly extending the life of the mounts. I've been thinking about using some thin perforated steel plates to try and tie the shock rod to the upper mount studs if/when I get my upper mounts replaced. I'm not sure if steel is the correct material to use to link things together but it's the easiest material to obtain. If you succeed in your efforts it will save me some 'engineering' that I really don't want to do.

Good job.

sorry, entered this in wrong reply box (related thread instead of intended thread).