Holset Turbos, PART 7

[Kevin TSI]

Downpipe teaser

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[imdrax]

Well my WH1E is on its way. It has a 19cm divided housing so from what I gather it should work well with my 2JZ's displacement. One issue I cant seem to figure out just yet is the oddball size of the vband outlet. It is 4" OD and around 3 1/8" ID. My downpipe is 3" ID. So I believe I will need to somehow weld a 3"ID flange onto the cast housing but I have never welded cast before so I dont know where to start. Has anyone else encountered this? Also I notice the discharge pipe from the compressor housing is a Vband as well, Im assuming I should be able to just grind it down to slip a coupler over. Is this what you are doing or is anyone actually running a Vband on the outlet pipe?

 

[Gstclipse69]

I believe most people grind the lip down on the compressor cover and put a 2.5 coupler over it.

 

[JWoodley]

I welded a 90* elbow to the compressor cover. I used the silicone coupler over the vband hump for a while but right around 28psi it would burst couplers or blow off. Eff that.

I've had no problem with the welded elbow and it makes the IC pipe situation a little better.

EDIT: speaking of which I anticipate polish the compressor cover this weekend. Woot.

 

[blizz99]

does anyone know where i can buy the center cartridge from a hx40 from? checked ebay but there's none

 

[JusMX141]

Just the housing itself?

I have one of those; it's just a spare that came from a turbo with damaged wheels. The center housing itself has zero damage.

 

[abaum565]

By the way, why did you put the second o2 sensor that far down after the dump tube?

Proper placement for a WB I would assume.

 

[imdrax]

Ok so what is everyone doing about the vband for the exhaust housing? Are you welding one on? Or does anyone know where to find a clamp and flange to mate to the one that comes with the holset.

 

[1gDSM4g63]

Ok so what is everyone doing about the vband for the exhaust housing? Are you welding one on? Or does anyone know where to find a clamp and flange to mate to the one that comes with the holset.

If you talking about mating with the Holset 3 1/8" v-band a 3" flange and clamp will mate perfectly fine. As for the discharge pipe being a v-band you don't have to grind it down.

 

[Wicked95AWD]

You can run a single gate and you will have no contamination IF you run a divider in gate passage up to flush with the gate valve. It will work properly.

However, the below is NOT what you want to do:

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I'm already using the dark performance divided T4 manifold above with a 18cm^2 housing and there is no in-gate divider in the wategate passage as shown above. Apparently this is allowing contamination. How much do you think this is affecting the TS functionality/VE of my setup and is there any way to fix it?

 

[4g63Powered]

Guys, I need some help. I finally got the center section un-stuck from the rusty OEM turbine housing, but now I can't get it to seat properly in the BEP housing. The sealing lip is about 50% above the surface of the BEP housing and gets stuck. Is there a trick I'm missing? Is there any history of BEP housings' tolerances not meshing with the center section?

Thanks

 

[Jokeri]

I think you are confused by my post. I was asking which of the two housings you think would be better. We already have the top mount and downpipe so i'm not switching back to a bottom mount. Plus I got an amazing deal.

Ah... sorry, my mistake. I don't know how much difference 2cm can make in spooling on a divided manifold and housing setup, but I'd say the smaller size you can go is better especially on a HX40.

Hx40 supertrim on 2l engine,

2,1bar of boost and 2.5bar backpressure with 14cm housing.

Same boost pressure but on a 18cm housing there was 2,1bar backpressure.

The guy said that, with standart cams and 14cm housing compared to wilder cams and 18cm housing, spool difference was about 700rpm..

 

[1stGenTSi]

Guys, I need some help. I finally got the center section un-stuck from the rusty OEM turbine housing, but now I can't get it to seat properly in the BEP housing. The sealing lip is about 50% above the surface of the BEP housing and gets stuck. Is there a trick I'm missing? Is there any history of BEP housings' tolerances not meshing with the center section?

Thanks

The center section is probably still caked with rust. I had to use a pick/chisel/hammer on mine for a while to get it to seat.

 

[carbide]

Just jumping in here, anyone else hear of anyone else having HX40 failures?

Btw, I love my Holset. I just wish it would stop blowing up! Buying new center sections isn't that cost effective.

My two failures were not oil related, but shaft/turbine failures.

 

[dsmmatt28]

Just jumping in here, anyone else hear of anyone else having HX40 failures?

Btw, I love my Holset. I just wish it would stop blowing up! Buying new center sections isn't that cost effective.

My two failures were not oil related, but shaft/turbine failures.

Well I have a hx40/35.. It was named dodgezilla. This turbo came off a dodge 3500. It was used in a tracter pulling contest. I was told it saw 40psi on a regualr basis and 48psi a few times. I paid 350 for the turbo. I have been beating on it for the past month and a half. I have had it up to 38 psi. Since Ive had it, it has not seen less than 30psi, I am surprised it still spools.. Has normal play. Not enough that the wheel is hiting. Spokes a little after a hard pull. Normal driving doesnt smoke at all. Im sure it could use a freshen up. I will be pulling off to send to Justin after the holidays. Im very pleased with the turbo and its duarbility. I believe even if you say its not an oil presure issue it still maybe. Holsets are very particular about oil presure. There has been a ton of talk on here about Holsets and oil presure. Two Bad holsets back to back!!! Where are you getting your turbos from? To me its a case of just bad luck or you have a oil presue issue.
Sorry for your mis haps. I have been through my share of turbos and turbo failures that have seen less boost than what Im running now. Take what I say with a grain of salt . Hope you figure it out

 

[kawboy]

Post up your oil feed/return specs and b/s or not then

 

[donniekak]

Go do a hx40 search on any diesel forum and you'll get a bunch of broken shaft threads. I had one on my galant with no problems though. I guess its a hit or miss on the shaft failure. There is a company that does a shaft upgrade.

 

[Hubbard 0]

Not sure if this really belongs here, but I think it's better than starting a new thread.

What clutch does everyone recommend for an HX35 setup? I'd like to do close to 400 HP with it, but I think that's also asking a lot of my stock motor and transmission.

My current clutch seems to be toast and I need to upgrade, so I'm planning for the future. It seems an ACT 2100 won't hold enough or it'll be too close to its limit.

 

[rampridersrider]

Not sure if this really belongs here, but I think it's better than starting a new thread.

What clutch does everyone recommend for an HX35 setup? I'd like to do close to 400 HP with it, but I think that's also asking a lot of my stock motor and transmission.

My current clutch seems to be toast and I need to upgrade, so I'm planning for the future. It seems an ACT 2100 won't hold enough or it'll be too close to its limit.

2600 with Southbend disc is what I'm using. Works great.

 

[red1993gsallmt]

Just jumping in here, anyone else hear of anyone else having HX40 failures?

Btw, I love my Holset. I just wish it would stop blowing up! Buying new center sections isn't that cost effective.

My two failures were not oil related, but shaft/turbine failures.

HAve you used the same exhaust housing for both your failures? I noticed when i bought my housing i had to remove some material that was left from poor machining . Things expand when they get hot, turbine may not touch when its warm but who knows whats going on at full temp and turbine speeds

 

[We're on Boost]

HAve you used the same exhaust housing for both your failures? I noticed when i bought my housing i had to remove some material that was left from poor machining . Things expand when they get hot, turbine may not touch when its warm but who knows whats going on at full temp and turbine speeds

Jeepers, is that your bep bolt on housing that you are talking about?

 

[red1993gsallmt]

yes sir it is, also when a hacked apart my bullseye power hotside for my 57trim to get the internal wastegate arm and flapper (waste of time, go external) i cut the housing in half and my fateher who has worked with metals all his life said that it was a horrible, cheap casting. Very soft inside with alot of pockets

 

[We're on Boost]

Ok, Thanks for the info.

 

[JusMX141]

Thought you guys would enjoy reading this.

Holsets are being used on Evo's now, too. A guy on evolutionm named colonelfox put together a HX35 setup on his Evo pretty recently. After getting the bugs worked out, he's seeing 29psi by 3900rpms.

Read more at:
Any Evo Holset setups on here? - evolutionm.net

 

[Gooberlog]

good stuff, it looks like he is using a stock T3 hot side. I guess the turbine to exhaust manifold flange is square perfectly so you can rotate it 180* so EVOs can face it towards the driver's side? Or did he have to do a lot more than that. I'm about to check out that link. I'm always peeking around EVOm.net but never find much technical stuff like here on tuners.