For all you guys getting injector runners this week I have a few
suggestions for putting them together. The most important thing
is getting all the injector sockets to line up so you can use one fuel
rail. To minimize the work you should build the fuel rail first
and use it along with the four injectors as the alignment jig.
You need to make a decision on how far apart you are going to space
your injector runners I chose to space them the same as the first
batch manifold casting I was using. Bill Schertz I think spaced
them a bit further apart.
Since I did not have my injectors
yet I took another approach. I made a block of wood out of a 2 by 4 and
used a 21/32nd counter bore to make four holes. The size of the block is
12 inches long 1-1/2 inches thick and 2.6 inches high. I used
a wood band saw but on hindsight a table saw would work better.
I machined four slugs of aluminum .68" in diameter and two inches
long. I pressed them into the center of the block of wood with .65 inches
protruding. These just fit the injector sockets on the intake
runners. I realize you don't all have lathes so four 23/64 dia.
drill bits will works as well. Let them protrude from the
block of wood about 2 inches. Cheap 23/64th drill bits cost
about $2 to $3 each.
I have a CC (Cheap Chinese) table saw I bought from Harbor Freight
for $100. I bought a $50 carbide saw designed to cut aluminum.
Goes through aluminum like a hot knife through butter.
The same blade will work in a cut off saw or a Skill saw.
Be very careful when you trim the injector holders to size.
The piece cut off will take off and fly back towards your chest at
high speed. Don't stand behind it. It will travel at least ten
or fifteen feet. Make sure the table saw is bolted down or clamped
to the work bench and use both hands to hold the injector holders
while cutting them. This saw blade will cut a finger off in one milli micro
second or less.
Use a die grinder with carbide burr to remove the casting flash on the intake
end of the injector holder and sand it smooth before you attempt
to trim it to size. That will allow it to slide on the table saw
with out catching on anything.
Paul Lamar
Here is a picture of the saw blade used.
Paul Lamar
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