Originally Posted by Ian2wdsaffcos
Frog,
I believe that was Jim's attempt at humour mate
I think you are right on the cam covers though.
As far as I know the major change for unleaded petrol was bronze valve guides BTW Glen

cheers mate thanks, now you have me wondering if the engine I just fitted which is a rebuilt engine from a sapphy 4x4 has got that mod done or not, do all you guys run on super unleaded ?