16cm2 Turbine housing outlet questions...again

[sdstriper]

I bought a brand spankin new H1C w/16cm2 housing a few months ago for not much more than a 16cm2 housing and a rebuild kit together would cost, thought I really got a great deal. I did call our closest Holset dist. before diving in and they had trouble identifying what vehicle/equipment it was actually for. After some discussion with them and the guy I eventually bought it from I went ahead and bought it. It was our busy season at the time combine that with a high rooky factor and I did not notice the turbine housing outlet did not have the V-Band clamp provision, it is similar to the HX30 type B outlet . I spent all day today searching the TDR and the net, always learn something but never really got what I was after. Looking for P/N of a bolt on flange or similar. I have seen the T3-T4 weld on flanges out there. They look like they would work, which one of these is the same as the H1C outlet flange? Looks like I have a non-wastegate 16cm2 turbine housing, ready for a bolt on flange, could make for an easier 4" exhaust connection.

 

[Greenleaf]

Many of the school bus engines are equipped with a bolt on outlet flange. However, they be a waste gate housing.



We ARE talking about the flange on the back end of the exhaust housing where the down pipe is fastened to, right?



Sounds like you need to get the welding machine busy and fab a custom flange. This also may be the reason you aquired it at such a reasonable cost.



Remember that the flange molded onto the OEM exhuast housing is about three times as thick as the flange on the down pipe.



Scott

 

[sdstriper]

We are talking about the same flange, Thanks Scott. It is a bolt on, but I don't think it is a wastegated housing. The turbine housing outlet adapter side is very similar to the bearing housing side, it is machined flat with four bolt holes, ready for an adapter. The outlet port is 2. 45" ish, cheap caliper measurement. I have not called the Holset or Cummins parts folks yet for an adapter, probably a better idea to build one for a larger exhaust at this point. I have not had a diesel prior to this one. Is there a better/easier or prefered flange anyone could recomend if I am building it anyway. I did get my hands on a 6BT flange piece for the start of an exhaust, specifically ordered for the Dodge Cummins 6BT and what I recieved is 2 3/4 o. d. with that double flare like provision for a v-band clamp. If I am fabbing a flange off the turbine housing I am going 4" right off it. Anyone have any additional thoughts or points to make?

 

[Greenleaf]

Are you SURE it's not a waste gated exhaust housing? I have one here and it looks just as you describe. It has nor outlet adapter. Just a flat housing that will accept several differnt adapters depending upon application.



At any rate..... I'd build something to say 3. 5" or 4. 0" down pipe. You'll need to visit a custom exhaust fab shop. They have flanges and/or make them. It would need to consist of a bell adapter with a flange to match whatever flange you'd bolt onto the turbo housing outlet. Then, the adapter would "weld on" to the downpipe whatever it's intended size.



-S

 

[sdstriper]

I am not 100% sure on the waste gated or not, I am guessing it is not based on other housings I saw that were for sure waste gated. I better call again with the ID tag numbers and the casting numbers to make sure.

 

[sdstriper]

This one was for an Onin Generator, non-waste gated. Have you ever been browbeaten by a Holset distributor parts man? Not too concerned with having a new customer evidently... I'll fab an adapter and pay more attention on future parts purchasing.

 

[cerberusiam]

ever been browbeaten by a Holset distributor parts man

Hate it when that happens!!



I feel for ya. Been there too often.

 

[sdstriper]

Update

Here we go... I used to shake my head at the younger crowd with $10,000 bucks tied up in a $2000. 00 dollar car... I sure do appreciate that bunch of after spending today surfing and/or calling places for a flange and/or info. Those tuner types really have a ton of options and suppliers, great custom shops out there, it's really something if you live in a bubble (like me) and are unaware of that category of automotive enthusiasts and parts suppliers.



I hit the jackpot with this one!



http://www.atpturbo.com/root/releases/release091905.htm

 

[Greenleaf]

That looks like a sweet piece. However, what on earth is a turbo having a 3. 0" outlet doing on a street vehicle with a 4 cyl. engine!!!!????? I don't get it. It says that this set up will be necessary to assits in propelling the vehicle from 600whp to 700whp. Did I just read this right? Is this add talking about 600/700 whp 4 cylinder cars with a GT4 turbo.



I MUST also be in a bubble... ... ... ... ... ... ... How on earth is a 4 cyl (gas) engine going to spin up a GT... ..... ahhhh never mind. Jay told me to believe only 1/3rd of what you read.



I'll be going back to my bubble now.



GL

 

[sdstriper]

From what I see out there it looks like the choices are HKS or ATP. There are a ton of sites selling flanges etc out there. Most are re-selling parts, not actually manufacturing anything. The machined v-band flanges and mandrel bend v-band modules are really nice. They are not that expensive when you compare them to prices for similar components available. Some of the machined outlet flanges I looked at were up 100-200. 00 range, just for the flange.



On a side note. I was talking to a parts guy at a Honda dealership I did some work at. Honda sells a high performance line that a local performance shop owner uses quite a bit of, he reportedly runs in that 700hp range, nitrous I think to get that much HP, death traps...