hey there im currently in need of a single sidedraft manifold to suit an A15 oval port head and a 40mm or 45mm weber. i will pay good money for one!!! please pm me if you have one or see one or know of one thanks

May only be a round port..

single sidedraught manifold on TradeMe.co.nz

i had a look and seems to be a round port for an a12.
anyone got anything at all???

You're looking for one of the hardest to find manifolds (if not the hardest) for the A-Series engine, you may as well start the engine build with this advert running through. I think it took about 6 months for the last person to find one, that was a few years ago.

Or start making one up.

well that sucks
do you think it would be possible to get a round port A12 one and round it out to match the oval port or would i just be dreaming to think that would work? haha

Dunno If youve read this thread yet m8... some good info, ideas and options on the subject. :)

$40.00 ozito dremel tool. $30 bits (2 at $15 each). Little bit of oil and get grinding on a rock stock A12 round port head. Open up the round ports to get big round ports. 'Slow' the fast & sharp curve ledge on the floor of the intake port just before the intake valve seat, take all the burrs off the intake port walls, de-shroud the combustion chamber around the valves.

Install bigger valves, face the head to bring the volume down (as you increased it when de-shrouding). I did one the other week, still working on it but it worked surprisingly well (the process did, haven't yet run the head).

The old ozito needs a break every now and then though, poor old cheapie.

The only difficulty is boring or porting the cross flow manifold as the runners are difficult to access, I planned on using a small flexi hone.

i was refering to getting a stock round port single manifold and rounding it out to match the oval ports on my A15 head.would that be possible?

Anything is possible, depends how much meat is in the casting at the head interface.
Quite often people open a round port out to suit oval heads.

well bige is helping me out with the engine internals and cam and stuff so ill ask him what he thinks and hopefully he can help out with this. cause it will be much easier tryin to find a round A12 single than an oval A15 single