Anyone Put FI On An E31?

[Guest Big Purds]

I have heard many people say it is possible by "nothching" the ports, but has anyone actually done it?

[DAW]

The f.i. heads also have a larger manifold bolt, that the E31 doesn't have, along the upper row of manifold-to-head bolts. You could drill these and notch the intake ports for injector clearance, but I'd recommend a different approach to what you are trying to accomplish.

The N47 head off the '82-'84 Maxima is already set-up for f.i., has chambers about equal in volume to E31, has a good quench chamber design (like P79/P90, but with a lower roof), has 35mm exhaust valves like L28 heads (E31 has 33mm), and has hardened seats for unleaded gas. The one drawback over the E31 are the round/linered exhaust ports vs rectangular. The rectangular flow better, and there is a wider availability of headers and better-flowing factory cast manifolds (and turbo manifold) for rectangular ports.

I'd like to know if anyone has done porting on the round-port head to make a transitional port shape with the best possible match to gasket in order to use rectangular port manifolds? DAW