Best way to do a home port job on a s/c and LIM

**DWosik13** · 05-01-2009

anyone have any advice or write ups on the subject i have been looking for a while now but cant find anything

**agrazela** · 05-01-2009

I dunno about home-porting the supercharger, but I did my LIM with a Dremel, router attachment, carbide "teardrop" bit, and A LOT of passes

Used a bit of plywood bolted to the LIM in various configurations as a guide:

**Bio248** · 05-02-2009

dont do that ^^^^ unless you take out the H-bar from the blower case.

**agrazela** · 05-02-2009

Originally Posted by Bio248

dont do that ^^^^ unless you take out the H-bar from the blower case.

Why's that?

**Bio248** · 05-02-2009

because then the blower and lower intake dont match on the size of the outlet/inlet.

**agrazela** · 05-02-2009

An astute observation, but not a reason why one should not port the LIM if not porting out the H-bar.

My reasoning is that porting the LIM will expose more of the hot air in the LIM to the IC core surface, whether or not the H-bar is removed.

I can see it being potentially true that also porting out the H-bar is even better for exposing hot air to the IC core; but tell me, what harm will come of porting the LIM but not porting out the H-bar?

**minichopper6hp** · 05-02-2009

As for the s/c just do it like above.

**blueguy** · 05-02-2009

Yeah...except you forgot to fill those slits in

**minichopper6hp** · 05-02-2009

not done

, havent forgot about them.

**Bio248** · 05-03-2009

Originally Posted by agrazela

An astute observation, but not a reason why one should not port the LIM if not porting out the H-bar.

My reasoning is that porting the LIM will expose more of the hot air in the LIM to the IC core surface, whether or not the H-bar is removed.

I can see it being potentially true that also porting out the H-bar is even better for exposing hot air to the IC core; but tell me, what harm will come of porting the LIM but not porting out the H-bar?

with an intercooler then youre fine, but if you port the lower intake like that without an intercooler then youll need to machine out the h-bar too so you can match the openings on each.

**blueguy** · 05-03-2009

meh...minor details LOL

**Bio248** · 05-03-2009

here is what my blower port looks like:

the slits are filled with an aluminum epoxy that you can buy at the counter of NAPA.

**Sabrewings** · 05-03-2009

Here's the job Brian did on my blower:

**minichopper6hp** · 05-03-2009

looks like it wasnt taken down past the casting that far... i can still see those numbers lol. I tell you the best way to do it is a router, thats how i do it, and it turns out great, perfectly flat and use a straight edge. Takes 10 min tops.

Logan

**Bio248** · 05-03-2009

i put mine in a CNC lathe. took a whole 15 minutes to do it including mounting it on the table.

**minichopper6hp** · 05-03-2009

y didnt you mill the whole thing then?

**Bio248** · 05-04-2009

for what? so it is smooth? i dont really care..

**minichopper6hp** · 05-04-2009

lol... ok

**agrazela** · 05-04-2009

Originally Posted by minichopper6hp

looks like it wasnt taken down past the casting that far... i can still see those numbers lol. I tell you the best way to do it is a router, thats how i do it, and it turns out great, perfectly flat and use a straight edge. Takes 10 min tops.

Logan

A router? Like you'd use for woodworking? I imagined that's what you've been using on the phenolic you've been working with, but I never would have imagined using that on aluminum.

What speed, and what type of bit?