rotaryracer1

iTrader: (1)

hello all, i am planning on porting the wastegate on my 88t2 and i need to know what type of bits to use from experienced porters. thanks in advance. Nick

InMyWhiteTII

You'd save a lot of time using a cordless drill and a cutting bit. Dremels take too long.

Mombodogs

Not from porting experience, but in similiar applications in our business, we use a high speed air angle or straight grinder with variable metal bits. Air grinder at Harbor freight, 19.95, but bits go from 25-175, each. Using an adjustable drill guide adapter, the freehand accuracy is amazing. Secret is -not to much pressure. These bits with high rpm, can shave 1/4" inch in minutes. And clean.

PEACE MOMBO

Digi7ech

iTrader: (1)

Pretty much you need a **** load of RPM.

I used what I had.

Dremil with lots of low grit sanding barrels and grinding stones and a drill press(not enough speed but good pressure)

That metal is thick and hard so it took me a while.

hIGGI

iTrader: (7)

SGS carbide bits works fine

http://www.store.yahoo.com/tylertool/sgssolcarbur1.html

for example

BklynRX7

I was gonan sue the tungsten carbide bits dremel sells. As for the dremel not being good enough, my dremel 400 series xpr eats 1/4 AL easily with the included cutting bit, i havent even tried the tungsten carbide yet. so.....

RotaryEvolution

iTrader: (30)

buy a die grinder and a carbide burr, your hands will thank you for it later.

Aaron Cake

iTrader: (1)

In my experience, the cheap hardware grinding stones work great on the cast iron of the turbine housing. Use a die grinder.

88rxn/a

iTrader: (6)

youll be fine wiht a dremel.. i used it for this....just buy extra bits and ear plugs...and be patient...its gonna take a while

Shaughn

http://fc3spro.com/TECH/MODS/TURBO/wgp.htm that should be a good site