you should,nt rap your manifold it will crack over time , get it ceramic coated to contain the heat in the pipes. I have done mine and works well

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38.1mm (1-1/2"), which is strange since the injector is stock for a 2004 Honda Civic Si. It's the same length as a "GM LS2" injector.

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Thread related pics i came across on FB a while back
Cant seem to get the user who posted them...il keep checking

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Damm that looks good!
LOVE your rail/holder :O what is the length between the flange and the rail?
Great design, would like to make a set of my own... are you mounting them with one long bolt through the middle? or do you screw it into to flange?

Those injector bosses are machined into the flange adapter. It's all one piece.

This particular manifold came from a 1995 Mercury Tracer (USA). It was rated at 92hp 100tq.

The runners are 32mm ID 38mm OD mandrel bent tubing and are about 29 cm long after I cut them off and cleaned them up. The plenum is 54mm ID 60mm OD tubing with a stamped cap on one end. The stock throttle body is ~40mm.

It's a fantastic starting point especially since I only paid $24 at a local salvage yard.

That manifold is from the Ford Escort 1.9 CVH engine (Canada model 1990-1993)

What make/model does that manifold come from? It looks like it's a good starting point for the A series.

Yes, a smaller plennum reduces peak torque and the rpm where it comes on but the area under the torque curve stays roughly the same so you have a fatter torque band. They may have needed to fatten the torque curve.

I've wondered why Ford used such a small plenum while all other OEM intakes have a larger plenum. Anyone know the advantage?

Fantastic work! Welding injector bosses onto a custom manifold is a real pain. This is a great solution and done very neatly.