Quick Question???

[mukapahnpy]

This maybe stupid but...

If you have a ported turbo and use a non-ported o2 housing, are there any bad side effects?

TIA

Mukapah

**admin edit - please start using more desriptive descriptions **

[Enes]

no bad sidefects, its just a bit more heat held back in the turbo..
and less boost up higher rpms'

reasons of porting is to get more boost up top, but you do loose some velocity in the lower rpm's i beleive..

-E

[JET]

The reason for porting is to get better flow, mainly. Better flow = less pumping losses = HP! Porting will also help spool up some and can cure boost creep.

No, running an unported O2 won't hurt, you just don't get the full benefit from the other ported parts and bigger exhaust.

[mukapahnpy]

The reason I asked was b/c just put on a used ported FPb28 w/upgrade actuator, but manifold and o2 are stock. After running up and down the street, I cannot get any boost above 10psi at any rpm. Pull back into the garage, pop up the hood, and the manifold is just extremely hot, smoking if you will. Oil leaks from gasket on oil return line. I'm thinking to myself, wtf, do i have a whacked up turbo? or wtf is going on? Any advice guys?

[A//// Guy]

That is not the O2 housing causing that... Could be the actuator, your boost controller, and I would fix the oild leak before you drive too much.

[JET]

You probably don't have the boost controller hooked up right or something. 10 psi is right for the stock actuator. Is spool up ok?

[mukapahnpy]

Ok, took everything off, put everything back on. Adjusted the actuator 3 turns out so it has a little play, before I had tightened it so that it just sat over the rod with the gate tightly closed. Boost controller is a Profec-A set @ 1 bar, fuzzy tech indeed. Will drive it in a bit, tired.

Correct me if I'm wrong, if the wastegate spring is set @ 17psi, wouldn't that mean that the turbo would spool, build boost, until the wastegate spring is over come and open the gate? Odd, that before it didn't build much boost. Will update...

Edited: It does not spool up like the stock t25... that's why i'm worried that I got a busted b28...

Updated: It's been ok (I think). Fuel cut? (BOOM Anything fall from the car?!) 3 times now, ouch! Scared to punch it now! The weird thing is, based on *web readings* I thought this turbo is supposed to get full boost @ ~3k Rpm... I'm not getting it until about 4k or so...it's as if the FPB28 does not want to spool...is this normal? anyone?

[Jacek]

i wonder if your wastegate is open all the time..

[Goat Blower]

Did you drop anything down in the exhaust that would plug it up? Do you still have a cat on there?

[mukapahnpy]

I'm 99.9% positive that I didn't drop anything in the exhaust. I took off the DP before I took off the t25 and put it back on after the fpb28. Crap... hrm...