Forced Induction Custom FI Setup Questions

How do I cut a hole in my HM manifold for my turbo flange?

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Old May 5, 2004 | 04:15 PM
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pa2play's Avatar
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Default How do I cut a hole in my HM manifold for my turbo flange?

Well...? I have already made my log section and I don't know how to cut my 2" hole in the side of it to weld my t25 flange on it? any pointers?
Old May 5, 2004 | 04:25 PM
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Default Re:How do I cut a hole in my HM manifold for my turbo flange?

get a grinder, with a grinding wheel and work at it from the side of the grinder... will take a while, but will be worth it
Old May 5, 2004 | 04:59 PM
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Default Re:How do I cut a hole in my HM manifold for my turbo flange?

it would probably take like 2 hrs doing it that way, anyone else have any suggestions?
Old May 5, 2004 | 05:39 PM
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Default Re:How do I cut a hole in my HM manifold for my turbo flange?

if you have or access to a plasma cutter that would be one way or you can cut into the streight side of it with a saw and grind the rest with the grinder or use the cutting wheel
Old May 5, 2004 | 06:52 PM
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Default Re:How do I cut a hole in my HM manifold for my turbo flange?

I would maybe try a hole saw and a drillpress at very low speed with lots of lubrication.

-Nick
Old May 5, 2004 | 08:29 PM
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Default Re:How do I cut a hole in my HM manifold for my turbo flange?

lookin good.

i probably would not use a cutting torch, it will effect the metal around the area you're cutting.

if you don't want to mess with using a 4-1/2" angle grinder on it (which I could have done in no time flat) then take that ---- to a welding shop and have them plasma the hole for you, shouldn't charge you much.
Old May 5, 2004 | 08:54 PM
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Default Re:How do I cut a hole in my HM manifold for my turbo flange?

Funny thing is when I first saw you post that, that was my very first question... how the heck is pa2play going to put a hole in that thing! hah Good luck buddy
Old May 5, 2004 | 09:43 PM
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Default Re:How do I cut a hole in my HM manifold for my turbo flange?

I HAD access to a plazma cutter yesterday, but I don't any more(my car class is over for the semester ) I have a drill press, and I could go and buy a hole saw, i'm not sure how I could clamp it down though...hum...maybe I'll take it to a machine shop and see what they can do.
Old May 5, 2004 | 10:04 PM
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Default Re:How do I cut a hole in my HM manifold for my turbo flange?

Originally Posted by pa2play
I HAD access to a plazma cutter yesterday, but I don't any more(my car class is over for the semester ) I have a drill press, and I could go and buy a hole saw, i'm not sure how I could clamp it down though...hum...maybe I'll take it to a machine shop and see what they can do.
Clamp it down on a vise and go at it with a bimetal holesaw.You can just use a regular drill and spray it with cutting lube or even wd40.Trust me on this one.Sometimes I use my cordless drill if I cant angle it right on the drill press.
Old May 5, 2004 | 11:59 PM
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Default Re:How do I cut a hole in my HM manifold for my turbo flange?

cut a piece of pipe thin, tack it onto where u want your hole, then run around the inside of the tacked pipe with your cutting torch. works awsome.

also, if u can bolt it to a spare head for this to keep the flange from warping thats a good idea.

if not let it cool in sand after your done, do not put water on it. bury it in sand.



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