Thanks for the info DD. Its for oval track racing, being quiet isnt an issue. a typical hotdog muffler does quite enough.
What i still dont know is how long to make the dual pipes and what diameter pipe do they dump back to? The idea with the paint sounds great, similar to a lipstick idea that i have previously heard from a mate.

Hi all, im just poring on behalf of a friend of mine, to see weather anyone has done extensive testing with GX exhaust manifold header pipe diameter and length etc etc. It is a race car so there are rules and regulations to abide by. It runs an a12 with h89 head on unleaded, standard a12 carby, 60thou oversize bore and a pretty tame cam. Im sure someone out there has done the dyno ground work and hopefully they are able to help out with some specifications. Im mainly after what length is ideal for the twin pipes and what diameter pipe, then what size do the collect back to, and for how long, and when in the equation will the hotdog muffler come (also regulation).

If there is any more info i can provide to help get a better answer ill try my best to do so. Thanks in advance, GG.

I have a 3.7 give me a call 0400154377 cheers

I have a 3.7 give me a call 0400154377 cheers

i have one call me! 0400154377 cheers

Head gasket for sure. I have a number of a15 cylinder heads, exhausts and blocks for sale if you are after anything send me a message.

I HAVE FOR SALE QUITE A BIT OF DATSUN GEAR, JUST LOOKING TO CLEAR OUT THE SHED.

ALL ITEMS LOCATED IN WARRNAMBOOL SW VICTORIA

Ill get some pictures up tomorrow if I get the time and some more detailed pictures for serious buyers. I have a lot of datsun gear and looking to get rid of it all!

This list is what I can remember, if you are after something, yell out as who knows what I might have stashed away here.

EVERYTHING IS OPEN TO OFFERS AS I CANT PLACE A PRICE ON STUFF I DON'T KNOW THE VALUE OF

There is atleast 4 a12 motors that were in good running order when they were pulled out.
2 x L18 motors - both with the manual gearboxes also
gx head milled and ported
a15 oval port inlet manifold
2x a15 crankshafts
a wide range of 13"alloys ranging from 5"wide to 6" wide all fitted with various size radials
h190 diff centre (cant recall ratio)
h150 3.9 diff centers

This is just what i can think of off the top of my head. I need all of this stuff gone guys so make a reasonible offer and its yours

Pictures tomorrow hopefully. cheers

I need it to fit a sunny which is h150. Message me?

Give me a pm if you have one as I'm desperately chasing one thanks.

I have for sale an a15 oval port inlet manifold. In good condition, Located vic will post at your expense. Accepting all offers as Iv been out of the game for a while.... Give me a call or txt for photos as I do not get on here much! 0400154377