Re: manifold machining

[Peter Gargano <peter@ntserver.techedge.com.au>]

Dave Williams wrote:

>  When you find those injectors that can spray through a 90 degree turn
> and around a curving path to the valve let me know....

I have two options for mounting injectors on an AlfaSud 1500 (flat 4).

 1. About 5-6 inches away from inlet valve, using existing (carby) inlet 
    manifold. Has a 90 degree turn (injectors vertical, valve stems
    horizontal)

 2. Directly onto back of the inlet valve, but the injector hole is
    then machined into the (alloy) head itself. I don't see a need 
    for a bung for this position.

Option 2. seems to be the best, because then I can add a fancy 
manifold, perhaps going through a few iterations, without worrying
about re-doing the injector mounts. My only concern was that, as
injector is close to the inlet valve, and in the head itself, that the
O-ring or injector may get too hot in this position (it's a cross flow
head - exhaust manifold is on other side from injector). 

Any thought about machining directly into the head? (I checked clearances,
even sawed an old head in half to check that there's enough metal below,
nowhere near the coolant!)

Peter.
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