My very slow project has inched forward a bit recently with some laser cut profiles for my next manifold set up for the A15. I had designed some CNC flanges with injector bungs but the cost to get them made was a bit scary, circa 600 a pair. So, the next idea was to get the flange made in two parts, weld it together and then put the bungs in myself.

Since my intake will go over the rocker cover I also designed up some flanges so I can part the intake and get to the rocker cover for valve clearance adjustment.

A picture for reference.

Edit: Also pictured is a 3 bolt flange for the stock single outlet exhaust manifold and an inlet flange for a GT17 VNT turbo off a Mercedes sprinter van.

This is a very slow project but I'll post stuff up as I get things done.

Attach file:

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  laser profiles for post.jpg (117.20 KB)

looking good!

cool bits.

that intake flange fit a H89 head?

Yes, H89, the ports are enlarged and will need some matching.

(for others reading this thread, note that H89 has the "normal" oval ports -- A14 typical style 28x34mm).

Do the flanges have enough extra on them to port out to A12 GX size 30x36?

The ports are 31x37 according to CAD. I started with a dxf I downloaded from a link on this side years ago. I've got a H89 head and no GX head to compare against. The Flanges locate off the studs, I tightened up the holes so in rare cases where they wont fit you'd have to drill one the stud holes. In hindsight I should've made them at 28x34 but there's plenty of meat in a H89 to port match and blend. The port area also works well with 1.5" pipe.

Lamb do you have a link on here to those flange drawings?

I want to do some aluminium CNC sets to play with.

No, but it's essentially the same as the flange model I sent you via email ages ago. I can send you a step file if you like? Shoot me an email.

lol well aren't I red faced.

I recall you sending the file but not sure from what email.

Edit: (I think I found it.)
I have to wait until this evening to see if the file works.