Will 16g turbine housing work on 14b?

[tsi1991awd]

As the subject says, will the 16g turbine housing work with a 14b? I would have my 14b turbine housing ported, but I can't afford down time and I don't have the tools to do it. I can get a ported 16g housing....I have a feeling it won't work though.

 

[95autogst]

Yes it will work. The 14b and 16g are both TD05 frames and thus the housings are interchangeable. Anyone care to back me up on this?

 

[tsi1991awd]

I am planning on doing my Evo3 manifold, O2 housing, and 3" DP and don't want boost creep or spike. The 16g housing is ported, 7cm. So I would hope that there is no creep/spike

 

[fwdmaster]

Yes it will work. The 14b and 16g are both TD05 frames and thus the housings are interchangeable. Anyone care to back me up on this?

Your absolutely right,couldn't say it better myself

 

[tsi1991awd]

So even though its ported 7cm instead of 6cm, it will still work?

And it shouldn't give boost creep then right?

 

[No_Skillz]

So even though its ported 7cm instead of 6cm, it will still work?

And it shouldn't give boost creep then right?

The 7cm port job refers to the inlet on the turbine housing. It's done to help increase flow from the exhaust manifold. It has nothing to do with fitment over the turbine blades.

Boost creep is affected more by the flow of exhaust at the wastegate or after the turbo. If you are running internally gated, you can reduce boost creep by porting your wastegate passage and making sure you have little restriction along that entire pathway (passage, wastegate, dump tube/recirculation tube).

Or, you can get the correct supporting mods and tune for a higher boost where the efficiency of the compressor is better used by the motor.

 

[tsi1991awd]

so the whole interior of the housing has to be ported larger, or just the side that the wastegate flapper is on? I saw an article a while back on how to port it but I can't find it now. It had pictures and everything. Does anyone have that link?

 

[pboglio]

As the subject says, will the 16g turbine housing work with a 14b? I would have my 14b turbine housing ported, but I can't afford down time and I don't have the tools to do it. I can get a ported 16g housing....I have a feeling it won't work though.

It works. I can't say its worthwhile, as it gives you all of the lag of a 16g with very little of the power increase. Expect about 200-400 rpm in lag inrease without a measurable power increase if your not pushing the limit. This was one mod I didn't care for.

 

[tsi1991awd]

So its better to just find the time and buy a die grinder and port the housing I have now then?

Does the turbo inlet need to be ported, or just the wastegate? Again, does anyone know which link I'm talking about, about the porting that has pictures. Can't remember if its vfaq or on here. Can't find it.

 

[No_Skillz]

So its better to just find the time and buy a die grinder and port the housing I have now then?

Does the turbo inlet need to be ported, or just the wastegate? Again, does anyone know which link I'm talking about, about the porting that has pictures. Can't remember if its vfaq or on here. Can't find it.

Can't hurt to try porting yourself first. You might even end up saving yourself some money.

The trick for the wastegate is to shape the hole so that exhaust gasses do not have to make a sharp change in direction to escape. You can also make it larger but make sure the flapper can still seal against it.

Porting the inlet will help flow to the turbine, provided your downpipe isn't the restriction.

 

[tsi1991awd]

So suppose you are looking down through the top (inlet where the manifold connects) on the right side, there's the wastegate flapper and the hole for the turbine. On the left side there's the exit to the O2 housing.

I open up the top to 7cm, correct?

I also grind down the entire right side of the housing until I get to the wastegate flapper hole, correct? Kind of like a "tunnel" to that hole...so it doesn't flow down and then to the right to exit?

 

[tsi1991awd]

OK I found the link I was talking about.

Turbo Porting

Now I have the question of the wastegate area its talking about porting. So you do not port the inside of the housing, all you do is grind the turbo inlet bigger, and then port the wastegate outlet (part that connects to O2 housing) or what? That's what I make out of that VFAQ. Just porting that wastegate outlet bigger will eliminate boost creep??

 

[No_Skillz]

OK I found the link I was talking about.

Turbo Porting

Now I have the question of the wastegate area its talking about porting. So you do not port the inside of the housing, all you do is grind the turbo inlet bigger, and then port the wastegate outlet (part that connects to O2 housing) or what? That's what I make out of that VFAQ. Just porting that wastegate outlet bigger will eliminate boost creep??

You do NOT grind away at the inside of the housing where the blades are. That would only serve to create extra space where gas would escape without going through the turbine, causing massive lag and decrease in performance.

You should port the inlet. Easy way to do this is to use a 7cm^2 gasket and port to match, and shape the entrance of the wastegate as previously stated. What the vfaq does not include, however, is the shaping of the wastegate passage. You can also port the wastegate passage of your O2 housing (depending on which you are using) to facilitate waste gas exit.

Wheter this eliminates boost creep or not depends on how bad you had it before and how much you port, but it will definitely help.

Note that porting the walls too thin could cause premature cracking and failure of the housing. Best is to post up pictures of your progress so wiser eyes can have a peek.

 

[Turb07]

As the subject says, will the 16g turbine housing work with a 14b? I would have my 14b turbine housing ported, but I can't afford down time and I don't have the tools to do it. I can get a ported 16g housing....I have a feeling it won't work though.

Yes you can use the 7CM turbine housing on a 14B because they both have a TD05H turbine wheel.

As far as porting as stated in previous post becareful when you are porting the flapper valve area as if the flapper doesnt seet properly it will cause lost in boost.
And when doing so you should also look into putting the larger 34mm flapper to help with creep.

just my $.02

Turbo

 

[tsi1991awd]

You do NOT grind away at the inside of the housing where the blades are. That would only serve to create extra space where gas would escape without going through the turbine, causing massive lag and decrease in performance.

You should port the inlet. Easy way to do this is to use a 7cm^2 gasket and port to match, and shape the entrance of the wastegate as previously stated. What the vfaq does not include, however, is the shaping of the wastegate passage. You can also port the wastegate passage of your O2 housing (depending on which you are using) to facilitate waste gas exit.

Wheter this eliminates boost creep or not depends on how bad you had it before and how much you port, but it will definitely help.

Note that porting the walls too thin could cause premature cracking and failure of the housing. Best is to post up pictures of your progress so wiser eyes can have a peek.

I will be using the PR external dump O2 housing, so I don't think I would need to port it.

How would the wastegate entrance be shaped? Any pictures? Do I match the size to the O2 housing size?

 

[MrBoxx]

To properly port the turbine housing/wastegate area to reduce boost creep, you'll be porting mainly the INLET side of the wastegate passage. If you look down into the inlet of the turbine housing, you'll notice you can't see the little hole for the wastegate passage. The exhaust passes straight over the passage. Your job is to make the transition into that passage a little easier by opening up the area above the wastegate passage in the inlet volute.

Turbo Porting

O2 Housing Porting

An image of the start of kmoore's turbo port job. Notice how he opened up the area just above the wastegate entrance? This is ideally what you want to do. He also removed the step where the ring gasket goes.

You must be logged in to view this image or video.

 

[tsi1991awd]

That is a good picture...it looks like he ported in a good ways and then on the side where the wastegate hole is, he just did that upper portion so the gas would flow down and out. Idk. I'm making this more difficult than it has to be

 

[MrBoxx]

Just remember, that pic is the beginning of the project. Later, I'm sure he smoothed everything out. Most people use a double-cut carbide burr to remove lots of material, then switch to a sanding stone or a flapper wheel to smooth the walls. The smoother the better.

 

[tsi1991awd]

So pretty much it will look something similar to that though? That would be enough material removed from the wastegate area?

Also, do you think the wastegate exit is worth porting, or should I just leave it?

 

[MrBoxx]

You can port the exit to match the O2 sensor housing flange, if it's a different shape (bell vs. kidney bean) but it's not required. Porting the actual wastegate port itself is also discouraged because if you take off too much material, the flapper may not seal.

 

[tsi1991awd]

Thanks for clearing that up. Do you know if the $20 Campbell Hausfeld die grinders at Sears would work? I don't want to spend a whole lot when I won't use it very often. It says 22,000rpm so...hopefully that's fast enough

How long should this take once I have the turbine housing off? 2 hours or so?

 

[dsm-onster]

This is kind of off topic. But not really. You should want to run a 7cm^2 turbine housing because you will beable to get the most out of your compressor. The 14b compressor flows around 34lb/min. The stock turbine housing is far too small to get the most out of the compressor. Yes, you'll have 16g spool speed. And 16g power too. 34 lb/min is easily over 300whp. The 14b likes 19-20 psi with a 7cm^2 turbine housing.

It works. I can't say its worthwhile, as it gives you all of the lag of a 16g with very little of the power increase. Expect about 200-400 rpm in lag inrease without a measurable power increase if your not pushing the limit. This was one mod I didn't care for.

So not to attack or negate your credibility at all, but this isn't really true. You will see an increase in power simply because there is a higher VE and the compressor can actually support the increase in flow. . . Especially for a 15-17 psi tune. This is from personal experience and the compressor map backs it up. . . And how much a 7cm^2 td05h turbine flows is backed up by Curt Brown.

 

[tsi1991awd]

So if I got the 16g 7cm2 housing, you're saying itd be better than porting the 14b housing? I still may need to port the 16g housing for the wastegate entrance, but that won't be too big of a deal.

You said its easily over 300whp, but with what other mods? Bigger injectors, fuel pump, adjustable FPR? Or do you need more?

I'm not trying to put a lot into the motor because of reliablity and daily driving issues. I'd like to run about 14 or 15psi with a MBC and stock fuel system. Possibly a fuel pump upgrade and AFPR in the not so distant future. But if the 16g housing would be better to begin with, then ill get that.

 

[pboglio]

This is kind of off topic. But not really. You should want to run a 7cm^2 turbine housing because you will beable to get the most out of your compressor. The 14b compressor flows around 34lb/min. The stock turbine housing is far too small to get the most out of the compressor. Yes, you'll have 16g spool speed. And 16g power too. 34 lb/min is easily over 300whp. The 14b likes 19-20 psi with a 7cm^2 turbine housing.



So not to attack or negate your credibility at, but this isn't really true. You will see an increase in power simply because there is a higher VE and the compressor can actually support the increase in flow. . . Especially for a 15-17 psi tune. This is from personal experience and the compressor map backs it up. . . And how much a 7cm^2 td05h turbine flows is backed up by Curt Brown.

I'm not stating that there wouldn't be gains, although I saw next to no gains myself. Its a mod I personally didn't like, as I got all the lag of a 16g without its topend. I prefered a well ported 6cm turbine housing on the 14b as a better match. YMMV.

 

[dsm-onster]

So if I got the 16g 7cm2 housing, you're saying itd be better than porting the 14b housing? I still may need to port the 16g housing for the wastegate entrance, but that won't be too big of a deal.

You said its easily over 300whp, but with what other mods? Bigger injectors, fuel pump, adjustable FPR? Or do you need more?

I'm not trying to put a lot into the motor because of reliablity and daily driving issues. I'd like to run about 14 or 15psi with a MBC and stock fuel system. Possibly a fuel pump upgrade and AFPR in the not so distant future. But if the 16g housing would be better to begin with, then ill get that.

Oh not saying that. a creeping turbo is from a poor flowing wastegate. I'm saying that the 16g housing would be for those who want to maximize the m/t platform for the least amount of money. It is better bacause it will allow you to reach the potential of the 14b, later.

For example, with all my 1g m/t cars, I swap in the 7cm^2 housing and buy a cheap fmic and walbro 255hp fuel pump and the neccesary adjustable fuel pressure regulator. The fuel pressure regulator is needed because the walbro 255hp will overrun the stocker but costs nearly the same as the smaller less flowing 190 pump. Yet, the 255hp will flow plenty of fuel at a high base fuel pressure of 60 psi. 60 psi fuel pressure cause 450cc injectors to flow 530cc at any boost pressure you can run that 530cc fuel flow will allow. 530cc and 20 psi with a smallis ebay fmic is enough to max out the 14b compressor. These parts are cheap. This is what I'm saying. And you can benefit from the turbine housing along with a used safc, adjustable regulator and a fuel pump upgrade you will have a 300hp car. No bigger injectors. No unusually large fmic. The 14b doesn't put out enough flow to need a large core. You will need to buy the piping, too.

Now that I fully understand pboglio, I agree that it will not yield much gain at 10-13psi (slightly over stock). You'll just get a bit more lag to your selected boost and still possibly creep, pushing you beyond stock fuel flow.