rxseven

Has anyone used N/A housings in a t2 motor? Do the diffusers in the exhaust port affect turbo spool?

hIGGI

iTrader: (7)

yes, it works
we just cut them out

picture of stuff cut out, no porting yet....

Zach McAfee

How in the world do you cut that hard metal?

hIGGI

iTrader: (7)

SGS porting bits

RotaryResurrection

iTrader: (8)

Me too.

****, my FD is running around with s5 NA rotorhousings.

Cut that diffuser out of there with a torch, takes 3 minutes per side.

totallimmortal

What is the diffuser for? does it resrtict exhaust flow and would it be a bad idea to cut them out on a NA?

RotaryResurrection

iTrader: (8)

it is to lower noise. it does restrict flow slightly. cutting them out will prpoduce a bit more flow but a bit more noise.

Liquid Anarchy

iTrader: (2)

ok... so what was the solution to the missing coolant passage? Just curious, I shouldn't ever need that passage:-P

Zach McAfee

Not to hijack, but what are your opinions on removing the sleeve all together? The last thread I read about this topic was full of approvals.

hIGGI

iTrader: (7)

i don`t like idea of whole removed sleeve, its kinda protection to rest of housing which is alu...imho

Aaron Cake

iTrader: (1)

Grinding stone....Takes a little time, but works well. Just don't waste the expensive, good stones. Use cheap hardware store stones.

hIGGI

iTrader: (7)

SGS bit is not cheap, but it does work good and will not be wasted in this

Zach McAfee

I was just curious. I'm building a PP at the moment and I've already removed the sleeves.
Aluminum alloys are cast in the 1150°F to 1300°F range, so your probably right, but I hope your not.

rxseven

Don't run the coolant thru the intake manifold, no big deal.

RotaryResurrection

iTrader: (8)

FOr a stock t2 application, use the NA housing in the front position....the rear is the only one necessary to feed the stock turbo.

IF you need to use 2 NA housings, well just pull water supply from elsewhere, like the BAC hoses.