[Aowolf]

Hey guys and gals, I have an automatic 1988 924s. (the later motor) A few weeks ago my brother was driving the car home from work when it began to rattle at low RPM. At higher RPM though, the engine is smooth as silk. I took it to my Porsche mechanic who told me that the "Flex Cupeling" was worn out.

I know that isn't the official part name so Ill do my best to translate his mechanic speak. Basically he said there are two arms in the bell-housing that do not normally come into direct contact when the transmission is spinning. He told me that a piece of rubber sits between the two arms, and that it was gone now so that the arms are banging against each other at low RPM but are held together by centrical force at higher RPM.

Unfortunately Porsche sells the replacement rubber part for over $1100. What my mechanic suggested was welding the two arms together, but cautioned that to open the housing I would have to drop ether the engine or transmission.

Basically I am trying to figure out if there is a cheaper solution to the problem to stop the rattling. Will welding the arms work and is it healthy for the car? Is it ok to leave the rattle or will it have a destructive effect on the transmission?