Stage 1 Porting

[LGAFF]

Well, I am pressed for time so I can get the snake skinner project on the road sometime soon, so I am doing a "stage 1" Plenum port this time around.

Primary: 36mm for plenum narrowing to 35mm at the fuel injector boss, boss is removed and will taper to 33mm(maybe 34mm)

Secondary: open to 36mm to fuel inj boss. clean up after that(flap)


Going pretty fast, I did 5 IH hole down to the Inj boss in about 2hrs,

So we will see what we get

[Eric870]

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[Eric870]

[QUOTE] "Going pretty fast, I did 5 IH hole down to the Inj boss in about 2hrs,"

Lee will you post a picture of the tools and bits you use? I like to see what you found works best.

[LGAFF]

This one makes it go pretty quick:







I use these to get to harder to reach spots, the long shank I only use on an air compressor driven tool, as at high RPM it whips.

I use a cheap Harbor Freight Grinder and a small air grinder

Finishing is done with a 1" X 1" flap wheel 90 or 120 grit

[LGAFF]

I would not use a large bit on the head, the alum seems softer

[Eric870]

Originally Posted by LGAFF

I would not use a large bit on the head, the alum seems softer

Yes, Aluminum is very soft and gummy. I use a piece of steel to clean the bits when they get gummed up.

[LGAFF]

Are you using something to lube the area you are porting, if you spray WD40 or put grinders grease on the surface, the alum will not stick and the metal comes of like BUTTA!

[Eric870]

Originally Posted by LGAFF

Are you using something to lube the area you are porting, if you spray WD40 or put grinders grease on the surface, the alum will not stick and the metal comes of like BUTTA!

No, I have just been cutting DRY. It's is a bad habit from work. I work in a clean room environment and we can't use oils. I just by bits by the gross.

[LGAFF]

I have heard of some using Dish soap but have not tried it.

[Eric870]

Originally Posted by LGAFF

I have heard of some using Dish soap but have not tried it.

Soap does not work well. But Wax works in a pinch.