hi everyone, just a quick update.
i have been through my history again and inspected the head rebuild invoice again.
Its an engineers invoice, just for the head rebuild and parts fitted to the head.
so im guessing the previous owner of my car fitted the head him self.
and im also guessing the cam wasnt "run in" properly. (2500rpm for twenty mins ??????)
An engineer friend of mine has offered to check my cam tolerances at the weekend, i have emailed piper for the tolerances and not had a reply, but i found this info on there web site
http://www.pipercams.co.uk/pipercams...n=8&engine=122
will this be enough inormation or do i need more ???

thanks again for all your help