porting diameter?

[bobo2986]

I have a 14B turbo that I am about to be ready to put on my car but I would like to port out the tubine housing, my exhaust manifold, and my O2 housing before I put it on and I was just wondering what the recommended diameter would be to port to, 7cm perhaps???

any input would be greatly appreciated, thanks

 

[bobo2986]

does anybody have any sugestions?

 

[kpt4321]

Porting the turbine housing on a 14b is probably not worth very much power.

If you still want to do it, just remove the steps in the turbine housing and the exhaust manifold that the ring gasket sits between.

Make sure to do plenty of porting to the wastegate exit area in the turbine housing and the O2 housing.

I would highly suggest not going to 7 cm, because that would be like, really big.

....Kyle T.

 

[TurboTerror]

7cm is not big at all. Just port it enought to remove the step and you will be fine.

 

[jbillakdsm]

I'm going to have to disagree. 7cm = 2.75591 inches so it's a pretty big hole. I have a 2g manifold, 14b, and 2g O2 housing all ported to 7cm and it made a big difference over how the car was stock. I thought about installing a 34mm flapper, but I decided to just port out the hole so the WG could open completely. You do have to be careful when porting the turbo out so you don't go too far. I would say try to at least get the connections to match up if you can but don't sacrifice structural integrity.

 

[DeezNutsForYou]

what exactly do you port on the 02 housing, I would guess just port everthing as far in as you can go, but I'm not sure. And when you port the turbine housing what all does that consist of. Do you have the pull the turbo apart or what. You must so you don't get crap down inside there. I looked at vfaq but it wasn't too clear. How hard is it to take it apart asuming that you have to, which I really hope you don't.

sorry to keep going on but I want to port everthing, and I want to do it right.

 

[TurboTerror]

I'm sure you know how to remove the O2 housing. That you just port out as far in as you can reach. The exhaust housing, you have to pull the 4 bolts holding the turbo to the manifold, and remove the ring clamp in the center of the turbo, then you can take off the housing. In the housing, remove the step area, grind down the blast area behind the WG flapper(this is the area the the flapper arm contacts the housing) to allow it to open fully, and I even ported the discharge port from the turbine to match the O2 Housing.