burnzy

iTrader: (1)

anyone seen this, 11.5 turbine housing, any thoughts on performance gains/losses?

3gEclipseTurbo

iTrader: (12)

Link?

EvolutinIX

iTrader: (10)

I'm with him.

revvin9k

iTrader: (23)

Someone posted this before.....IIRC it was just a worked over 10.5?

3gEclipseTurbo

iTrader: (12)

So why not just say ported 10.5? Or does it just sound better to say you have a 11.5 hotside?

bbyevo8u

iTrader: (14)

theres a 10.8 not a 11.5

MR. EVO MR

iTrader: (9)

hey im calling my ported hotside an 11.5 for now on
not

JakeTheVIII

iTrader: (35)

Probably much like moving from the 9.8 to the 10.5, not really noticeable.

Slo_crx1

iTrader: (9)

The 9.8/10.5cm^2 refers to the area ratio (or a/r) of the turbine housing, so in order for the size to increase to say an 11.8cm^2 that means the area ratio would physically have to change. Porting alone won't raise the a/r, it would have to be re-cast. Do a quick search on area ratio to see what I mean.

sparky

iTrader: (1)

By contrast to your opinion, I have concluded that porting could, in fact, under certain circumstances alter turbine housing A/R. Area can be altered, and radial distance between shaft axial center and the scroll's cross sectional centerline can be altered as well.

twista

iTrader: (2)

http://cgi.ebay.com/ebaymotors/Turbi...Q5fAccessories

I'm unsure how they have calculated it but i doubt it truly is 11.5.

COL Knock

You can alter it by doing that for sure, by making it worse.

nightwalker

It's interesting. I wonder if it really is a 11.5 housing.

Kasey

iTrader: (8)

By the numbers on the housing its a new 10.5. The funny thing is it has all the mitsu numbers still on it.

Slo_crx1

iTrader: (9)

It could to some degree, but not in large enough amounts. The biggest problem would be the thickness of the casting after you port it to achieve any major a/r changes as these turbine housings aren't especially thick to begin with in some spots. You would risk cracking the housing if the walls became too thin.

Edit* I also checked that link that was posted, it states the housing is for a TD06 wheel so the only assumption I can make would be that it's machined larger to fit the TD06 wheel and in which case the standard stock Evo TD05HR wheel wouldn't fit right.