total so faris about 1100 quid,but i now have enough bits to build about 3 engines! those pistons i asked about turned out to be accralites! but one of them seems to have been dropped from apollo 13 on re entry to earth,the crown is fine,BUT the sides are scorched in scores as if its come through the atmosphere! thatll be why it was knocking a little! and it is also very tight on the pin,so ill replace that,but otherwise the engine is in good nick,ill get pics up soon!