Are you talking about electronic fuel injection or mechanical? Lots of
Hilborn systems use "Down Nozzles" in the head. The Nissan I am familiar
with has the nozzle bores in the manifold but very close to the split line
with the head. I think it's just a mater of convenience for the tooling
----- Original Message -----
Sent: Friday, September 08, 2006 3:18 PM
Subject: Technical question, not strictly LSR related
> Has anyone ever installed fuel injector boss' in a head rather than the
> intake manifold?
> I don't mean to inject directly into the combustion chamber but rather in
> the intake port on a head with a
> particularly long and contorted passage.
> Would the injector get too hot? If installed so it penetrated the cooling
> jacket, and was obviously water tight,
> would that provide enough cooling or would it simply heat soak the
> injector and cause it to fail prematurely?
> Any insight is greatly appreciated.
> Since this is very much a do-it-yourself group I figure someone here has
> at least contemplated doing this and
> either rejected it for some reason or tried to make a go of it.
> John Thornton