holset HX38G

[Wild Bill]

Not enough posts so I can't post on the Holset thread however I have found a new Holset off an engine that was converted to natural gas so turbo was just run at the factory and then removed once delivered.

I have not seen it except in pics yet and have searched all over the web. It is listed in the same manual Holset has on line for the HX35 and HX40 but I can't find much of anything on the web concerning it.

I did find that the Holset HX38G is used on an Iveco Cursor 8, 7.8L engine, 310 HP
http://web.iveco.com/uk/products/pages/stralis_driveline_cursor8.aspx and can find rebuild kit's and such. I did contact Holset to see if I can get any information out of them but was wondering if any of you might have an idea what is different compared to the HX35 and 40's.

Thanks!

Well I guess I better get more post's so I can participate. Built my kid an AWD 6bolt gen 1. I didn't bother asking questions because all the questions I had were answered in other threads. Now when I actually have a question I can't post on the applicable thread. The kids car turned out fantastic by the way, I'll disclose more as I continue to bump this thread and accrue posts!

I still cant post on the Holset forum, I'm trying to contribute and get my numbers up there. Hoping I can bump this so I can perhaps get some info on this. My wife picked the turbo up today so yet to see it in real life. Tomorrow!

 

[JusMX141]

I know nothing.

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

...or wheel specs.


If I had to guess? May potentially be a HX35 turbine with a 58/83mm HX40 compressor. Who knows.

 

[DSMReviver]

Justin, you are being a little harsh on this guy.

I like the signs tho haha

 

[clipto]

We don't have hx38g in the states I think. My friend has one on his 240sx he also lives in canada. I think it's something like a 54mm compressor wheel and a 70mm exducer.

 

[JusMX141]

All the literature I've read and I can't come up with a single wheel spec on this thing. It's such a rare piece- only found on Iveco F2B-powered Natural Gas-burning buses; I can tell you that it uses a HX35/40 rebuild kit...but that's all the info I can get.

 

[Wild Bill]

If I had one to measure at the time I would have measured it.
7 vane compressor. 76/54 mm. 12 vane turbine. 76/62 mm.
Twin scroll turbine housing. Water cooled center

 

[JusMX141]

Sounds like the other way around from what I had guessed- a 7-blade HX35 compressor mated to a HX40 turbine. May be a hot setup with a DSM bolt-on turbine housing as the larger turbine would lower backpressure while adding minimal lag over a HX35 turbine.

 

[Wild Bill]

Searched and looked around on the DSM catalog for that housing, Can't find it. Don't know if i'll use it but worth a look.

Tried loading on here but files probably to big. was to tired so here for the time being.

http://www.theturboforums.com/threads/367610-HX38G-Holset

 

[JusMX141]

By the photos, that's exactly what it is....7-blade HX35 compressor on a 12-blade HX40 turbine with 19cm T4 turbine housing.

The only way this turbo would be useful at all is if you had a DSM bolt-on turbine housing from Bullseye Power and were really pushing it....otherwise a HX35 user will outspool you by a good bit.

You can also consider swapping to a HX35 turbine wheel.

 

[Wild Bill]

By the photos, that's exactly what it is....7-blade HX35 compressor on a 12-blade HX40 turbine with 19cm T4 turbine housing.

The only way this turbo would be useful at all is if you had a DSM bolt-on turbine housing from Bullseye Power and were really pushing it....otherwise a HX35 user will outspool you by a good bit.

You can also consider swapping to a HX35 turbine wheel.

You do know it's going on a 520 cid engine that turns a max of 3000 rpm right? Of course you dont. 6 cyl horizontally opposed Continental 8.54 L or 520 CID aircraft engine for an airboat. I want quick spool so yeah dsm turbine housing might be a good way to speed that up but it might spool quick enough the way it is? Like 1400 rpm would be cool. 12 psi good enough. but asap!

Yeah it's not a 4g63 6 bolt like I built for my kid but this is where all the Holset info is so forgive me,,, I got this turbo on a trade for something that cost me nothing and it's brand new so I|t was a good trade for me!

 

[Wild Bill]

Must have been not nice JUSMX141. Just thought I would ask. At least i'm smart enough to turn to you guys as a Holset resource. Thanks for the info you did provide me with!

 

[JusMX141]

You do know it's going on a 520 cid engine that turns a max of 3000 rpm right? Of course you dont. 6 cyl horizontally opposed Continental 8.54 L or 520 CID aircraft engine for an airboat.

Unfortunately I didn't since no mention was made of a vehicle it was being used on.

Silly me for assuming it was to be installed on a DSM this being a DSM forum and all.

 

[bastarddsm]

The number after HX determines the Turbine wheel, not the compressor. Just like a GT35, can be a 86 or 82....

 

[white92talontsi]

The number after HX determines the Turbine wheel, not the compressor. Just like a GT35, can be a 86 or 82....

Says the man making 600whp and running 11's

It's a Holset not a Garrett.

 

[Wild Bill]

OK lets try it this way I have a 1G talon and I want to install a 4g63 on each wheel but only use 1 turbo and not exceed 3000 rpm

Thanks for the help, I learnt more from the Holset stickey than this thread but thanks anyway.

At least you guys know what a HX38G is now

 

[JusMX141]

Thanks for the help, I learnt more from the Holset stickey than this thread but thanks anyway.

The HX38G fits one application. You can't seriously be disappointed to the point of bashing our site and myself as a resource when you post a thread with minimal information and no photos or specifications at all asking what a certain turbo's potential is. That would be like me starting a thread saying I'm thinking of a color and having people guess what it is, then insult the forum and it's members when nobody guesses right.

I've never even HEARD of a HX38 until this thread was posted, so obviously I can't tell you any information about the turbo or it's usefulness. In the future, come prepared with photos, wheel specs, and a more-positive disposition and you'll find our site to be much more resourceful.