A little bit off topic , but I was wondering what size the standard ga16 inlet/exhaust valves are and if anybody knows how big you can go with oversized valves.

Have been scouring the internet for info, but can't find to much info on them.

will measure some tomorrow
unless you want to fit bigger seats ($$$$$$) you can only go about 1mm bigger, but noone will be making them as noone hots them up. ferrea do valves to order but again $$$$$
2 different head castings on GA's diiferent intake port shape and alignment one has plastic rocker cover the other tin. intakes do not interchange.not sure which one is the better combo.
dazza

Thanks dazza for that, I have asked a bloke I know who works at a local wrecking yard and he was saying the the plastic top ones are late model ones which are VVt, the alloy top ones arent.

Off tomorrow to pull one apart and check out the cam drive set up.

Gazza