new rear shock bushing

[tom kilner]

I've got a koni classic rear shock,  seems good,  but the lower bush sleeve was seized onto the mounting bolt.  I thought I could just buy a replacement, but it's not proving easy.

The pin is 1/2", the outer diameter of the bush is 17.5mm, the inside diameter of the shock eye is 27.5mm, width is 34mm and the inner bush is 45mm long.

Koni no longer offer that shock and I've looked through several manufacturers catalogues getting 2 out of the 3 essential sizes only.

Help appreciated!

[Don.Hasi]

Buy a new shock. It has done its work

[tom kilner]

 Maybe I should buy a new car? This car seems to have done its work too ;^)

 

[andydclements]

It's probably quite close to the size of a lotus arm bush. I don't have one to hand but they're certainly 1/2 inc bore, around 40-50mm wide, altough diameter may be slightly off. 

Failing that poly bushes are likely available. I know this is an Aus company, but there must be UK ones.

https://www.whiteline.com.au/product_detail4.php?part_number=W91124&sans_vehicle=1&catsize=yes

https://www.whiteline.com.au/catsize_search.php

[Dunc]

buy a larger polybush and turn it down on a lathe until it fits?

[tom kilner]

I think that's the plan - and fit an inner bush to get the 1/2" size.

Alternately I fit  a steel sleeve into the shock eye to step it down to fit an available polybush.

Then there's the question of how tight it should fit in the shock eye - but I should be able to ask a supplier.  Also I imagine the inner bush (at 45mm long) almost makes lateral contact with the hub carrier and radius arm and washer,  so when the bolt is torqued down there's no float, but the shock bush can rotate on the mounting bolt. Alternately it might actually tighten down.