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Old 11-25-2011, 05:45 PM
Hellbilly Hotrods
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converting a manifold to mpfi

ok, so im looking harder and harder at injecting my small block mopar.

i already have a victor jr manifold that has cast in bungs on each runner, intended for either injectors or nitrous nozzles. doing some looking around last night, i came across this.

seems like this would be my answer. i have a pretty good drill press, and a full woodshop to make wooden jigs with.

is this a process i could do with normal shop equipment? or is there any other diy way to machine a manifold for injection?

or am i looking to find someone with the equipment and pay him?


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Old 11-25-2011, 10:45 PM
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I've done a couple of manifolds on a manual Bridgeport using common end mills. If I had to do it on a drill press, I would want to build a locating fixture, and add some kind of accurate depth gauge. A dial indicator could probably be rigged up to work well enough -- the dimensions aren't terribly critical.

Also, the drill press spindle should be in very good condition -- axial runout can really mess things up.

The port tool is a much simpler, and faster method, and it's much harder to screw up.

(FYI: Port tools are also commonly used for similar things, such as ports for AN fittings.)
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