yep now confirmed petrol meth head!

D - I looked at doing that with the first throttle body I was going to use but this 52mm one is off a Suzuki TL1000 motor bike
(small , light and compact) so its only a flex hose coupling (support will off the front of the head)
It has an added bonus of a built in injector boss which could be used for secondary injection ( water , meth , etc )
dp

The only thing that could have been better to achieve that angle
was to angle cut the inlet wall by making the plenum a little longer
at the front and have the throttle flange welded on to have it bolted up.

like this but a little longer and opposite angle etc

Ha Ha Ha - Yeah. After a few false starts , its starting to move along.
I'm really happy the way both the inlet and exhaust manifolds worked out.
It should be a fun drive when its done !
dp

Thats more the spirit, no use paying for those high end manifolds
when something like that will give the same power.
Glad to egg you on so you had another go at the weber mani
I hate seen people spend 1.5 to 2k for a 4cyl manifold its so
not datsun in spirit but each to their own.

Mock up of the A15 turbo setup - no its not in 1200 but hey.
dp

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Started again from scratch

Cut the twin webber manifold in half and swapped LHS to the RHS and vica versa
to get better exhaust manifold clearance and a smaller plenum size.
This revelation came to me at 3am in the morning

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unfamilia, I have PMd you as to not spam up zigmondo's a15 turbo thread. The good thing about the investment casting is that they are true one-offs so can accommodate different specifications easily. It does make them more expensive than a mass produced sand-casting though.

DD prob is even with boost the L series mani from factory
has some sad flow direction, just look at the no1 cylinder
flow has to more than a 90 degree turn, fine for cruising!

nother view blighme!

factory EFI manifolds. in USA the L28E manifold is very common so some guys have cut'n'shut into 4-cylinder versions

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