Bell mouthing the IC Q's

S

sytyfreak

New member
Hi all,

I just want to get more info on how to bell mouth the IC??? How much improvement should I expect??? What tools do I need??? What exactly you guys do when bell mouthing the IC(I have an idea, but I want to be sure and know exactly what I'm going to do)???

thanx!

P.D. I used the search feature and even searched the archives, but I didn't found the answer to these questions.
 
Loeryder

Loeryder

New member
Remove the IC from vehicle
Use Die Grinder or dremel tool to grind away the inside edge of the "air intake" side of the IC. Where the air enters FROM the turbo...
Smooth it to a nice round edge, so there is no "lump" on the inside.
Leave the outside alone so the hose can still grab onto something.

I just hit it with a rough grinding wheel and cleaned it up with sandpaper.
Its not polished SMOOOOOTH thats fo sho.

Also stick a rag or something in the opening so you don't get all the shavings down in the IC.
And then last flush it out backwards with a heavy stream of water.

I soaked the inside of mine with carb cleaner to cut any oils before I rinsed.

Let it sit in the sun to dry and reinstall.

Not much improvement, probably not even measurable, but every little bit helps.
 
Tooky

Tooky

Serious about performance
I did it and my top end felt stronger than ever. Especially hitting overdrive gear , 100-115mph I noticed it the most. I can't say it was "for sure" because of the bellmouth though but I did feel it was worth my time, it being such a small restriction to begin with.
 
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