Holset Turbos, PART 4

[ezz-e]

doer any one no if the oil restrictor that feeds the turbo on a 95 oil housing works to feed a h1c? i have removed balance shafts and no porting done to the oil pressure regulator

 

[projecTSI]

Is that one of Jake's ITB manifolds?

 

[dsm-onster]

This should help out with spool a little on my hx52 Funny part is though I have no idea how the hell the fuel rail would hook up

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

Well the fuel rail connects to the head not the intake manifold. . .

Ezz-e, you will need a restrictor that limits pressure to 72psi. I think any restrictor for a garrett JOURNAL BEARING turbo will work. As long as that restrictor size has worked with a journal bearing turbo and a 4g63 with b shafts removed. That is the subject I would research. I've never used the h1c with out b shafts.

As in the dsmlink thread, I suggest feeding it from the head. If contaminated oil comes from the head and blows your turbo, it already scored your crank.

 

[Slippi84]

Is that one of Jake's ITB manifolds?

Not one of, THE manifold as in the very same one he had on his car and went 9.5 It was made by him personally and then someone bought it off him for lets just say a shit load and they guy changed his mind put itup on ebay and here it is.

Dsm-onster thanks I forgot about that. I don't have a head here so I forgot how it hooked up on my 420a it went into the manifold. Should make for a sick setup

 

[95tzlgst]

^^ That manifold is nice... Do work son!!!

 

[JWoodley]

If you get ready to sell it, holla atcha boy.

I just dumped my goodies off at the machine shop. Should have a motor soon, then I'll max out the hx40.

 

[Slippi84]

If you get ready to sell it, holla atcha boy.

I just dumped my goodies off at the machine shop. Should have a motor soon, then I'll max out the hx40.

NEVERRRRRRRRRRRR

 

[AXRabbit376]

do they still sell these BEP housings? i cant seem to find any.. and do you guys know where i can pick up a hx40 for fairly cheap besides ebay?

Check out timsturbos.com for BEP housings

 

[darkhorizon]

I can finally post here yay!

Here is that scan of a 7blade HX35 with a 12cm exhaust housing. You can see near the bottom I see .453KG/s worth of airflow, which means 59-60lb/m.

This might confirm that the Cummings chart might be onto something. Ill grab some compressor measurements and part numbers later today.

deathlog2 from darkhorizon -- Scan Depot dot net

 

[dsm-onster]

From our PM discussion, isn't your maf scaled different than stock? Would this mean that your airflow is higher than actual? Like hacking, or removing the honeycomb for us dsm guys? Or was it the other way: the airflow is higher than what is calculated.

 

[darkhorizon]

I forgot to tell you that I researched that.

I have never really scanned g/s before, so I was unsure what the calculation was based on, but after researching that, we have a pseudo G/s output from the PCM, that you just have to crunch a equation on top of. That output is based on the maf map programmed in the pcm.

Either way, the way I have it scaled, it would read low not high, the maf I have in here would read ~300g/s at 11000 HRZ if I didnt scale it. Actually I just checked it with an old scan of my friends supercharged setup, he reads 266g/s at 10300hrz... so I am flowing nearly 30% more air at the same hrz reading on the maf.

You could also do a calculation of airflow based on fuel flow, my 6 50# per hour injectors max around the 24-26IPW area, and I am running 60psi of fuel pressure. Take the wideband reading and you will get a good idea of airflow based on the ratio. I think I already double checked it awhile ago, and it came out fairly close.

Either way, I feel that that value is within 3-5% accuracy.

 

[dsm-onster]

Ok. Just verifying. This is GREAT news. Then it is pretty much confirmed.

Did you measure the inducer of the hx35 before you installed it? Just to make sure that there wasn't a compressor wheel upgrade done to it. . . If it measures 56mm, then the stock 7blade 56mm hx35 (this is the later hx35) is likely these compressor maps:

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

 

[darkhorizon]

I didnt measure it... I could fairly easily if you guys want me to.

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

 

[AXRabbit376]

What housing is being used when you guys are saying that the HX35 outspools the E316G and ouflows the FPRed?

 

[darkhorizon]

As far as I know, thats a stock housing... it has all the holset jazz on it. I heard that bep had some different compressor covers that bumped the flow up a decent amount, but they are quite rare nowadays as they havent made them for some time.

is it possible that my stock 12^2cm housing is promoting these flow numbers? As stupid as I may sound.. I think there could be a bit more left in this turbo.. as I know my wastegate was leaking, and I am nearly sure I had a boost leak of some kind.

 

[AXRabbit376]

I heard that bep had some different compressor covers that bumped the flow up a decent amount, but they are quite rare nowadays as they havent made them for some time.

Yea, BEP makes three different options. One is Mitsubishi-flanged, one has a T3 flange and the other has a T4 flange.

The don't see any reason to not run the Holset housing. It is a divided T3, whereas the BEP T3 is not divided. The only drawbacks I see from using the BEP housing is that your o2 housing must be fabricated and the fact that I have yet to find a divided T3 manifold.

Are you running an internal gate on your Holset? I was thinking about going with the HX35W right out of the box. I figure if the wastegate is good enough for Cummins diesels, it's sure as hell good enough for my DSM.

 

[JayRolla]

My buddy has a t3 flanged 7 blade hx-40. He was thinking of getting the bep housing because the one on his says ar 1.01 or something which we thought was huge. We dont know if it will spool right. Should he just try that housing first?

 

[1gDSM4g63]

...whereas the BEP T3 is not divided. The only drawbacks I see from using the BEP housing is that your o2 housing must be fabricated and the fact that I have yet to find a divided T3 manifold.

I recently switched from a BEP bolt-on to a BEP T3 which is undivided for my HX-40 and I'm getting constipated about this.

I've been hearing all these things about the divided spooling faster than an undivided but does anyone know by how much?

Will it makes a huge or little difference in spool rate for a divided turbo housing along with a twin scroll manifold over an undivided!?

 

[Steve93Talon]

The don't see any reason to not run the Holset housing. It is a divided T3, whereas the BEP T3 is not divided. The only drawbacks I see from using the BEP housing is that your o2 housing must be fabricated and the fact that I have yet to find a divided T3 manifold.

JM Fab divided T3 exhaust manifold- 90-99 Eclipse - GVautosport

 

[AXRabbit376]

I recently switched from a BEP bolt-on to a BEP T3 which is undivided for my HX-40 and I'm getting constipated about this.

I've been hearing all these things about the divided spooling faster than an undivided but does anyone know by how much?

Will it makes a huge or little difference in spool rate for a divided turbo housing along with a twin scroll manifold over an undivided!?

IMO, without a divided manifold, it is a waste of technology. The twin scroll is designed to take advantage of a divided manifold, using the 2 exhaust pulses to spool quicker. I've heard between 200-500 RPM quicker spool, which can make quite a difference in streetability.

JM Fab divided T3 exhaust manifold- 90-99 Eclipse - GVautosport

Steve, that manifold has twin gates. I need one that does not have gates on it. I will be running an internal gate.

Thanks for the info though

 

[1gDSM4g63]

Where can I find a divided T3 housing for the HX40?

 

[darkhorizon]

I said "compressor cover" as I have heard that BEP made some of the hx35 replacement compressor covers, not exhaust housings.

I am running this in a fully custom setup, with a custom o2 "housing", which is basically just a 3inch piece of exhaust tube with 2 o2 bungs welded into it, took maybe 10 mins to make?

 

[ScottH]

JM Fab divided T3 exhaust manifold- 90-99 Eclipse - GVautosport

Steve, that manifold has twin gates. I need one that does not have gates on it. I will be running an internal gate.

Thanks for the info though

Jason, I am sure they can make that manifold for an internal gated turbo.

 

[AXRabbit376]

Where can I find a divided T3 housing for the HX40?

The stock Holset compressor housing has a T4 divided flange.

I said "compressor cover" as I have heard that BEP made some of the hx35 replacement compressor covers, not exhaust housings.

I am running this in a fully custom setup, with a custom o2 "housing", which is basically just a 3inch piece of exhaust tube with 2 o2 bungs welded into it, took maybe 10 mins to make?

Sorry, by exhaust housing, I meant compressor housing, not o2 housing. Sorry for the confusion

 

[AXRabbit376]

Jason, I am sure they can make that manifold for an internal gated turbo.

Yea, for like 1k......I dunno Scott, the cost to do this might just be too high for me right now