Got my Holset today but...

[1gDSM4g63]

A divided .70a/r T3 HX40 with a twin scroll manifold would be a pretty sweet setup.

Yup, going twin-scroll works wonder on spooling earlier and flow more but it cost money to buy a twin-scroll manifold, 2 wastegate and setup the downpipe and dump tubes and I don't necessary find it is worth it for .70 A/R HX40. I mean the OP already has a stroker block.

 

[tunermag]

Yup, going twin-scroll works wonder on spooling earlier and flow more but it cost money to buy a twin-scroll manifold, 2 wastegate and setup the downpipe and dump tubes and I don't necessary find it is worth it for .70 A/R HX40. I mean the OP already has a stroker block.

I like torque

I think I could use a divided manifold with only one WG like the Dark Performance one.

 

[1gDSM4g63]

I like torque

I think I could use a divided manifold with only one WG like the Dark Performance one.

Well that would work too and can give you torque, but that's not a twin-scroll setup.

 

[Strm Trpr]

What exhaust manifold do you have now?

 

[tunermag]

Well that would work too and can give you torque, but that's not a twin-scroll setup.

Yes, I know. I have to do some space calculation for a full twin-scroll.

What exhaust manifold do you have now?

A generic stainless steel non-divided manifold.

 

[Strm Trpr]

T3?
Is it flanged for a wastegate?

 

[tkelly27]

Run it as it sits. If you don't like the spool, which you probably will, then consider your options. Holsets spool up quick as they are. A lot of people say "I don't want to do things twice" but, it's just a manifold. You can do it in an afternoon.

 

[tunermag]

T3?
Is it flanged for a wastegate?

T3, flanged with a 38 mm WG

 

[JusMX141]

A divided .70a/r T3 HX40 with a twin scroll manifold would be a pretty sweet setup.

No shit. I'd be willing to bet this would literally outspool the .55 a/r DSM bolt-on turbine housing from Bullseye Power on the right setup!

If I didn't already purchase the ERL manifold for my AWD (T3 undivided) I would DEFINITELY be interested in this housing.

I still think we need the details of where it came from and such just for reference reasons.

 

[1995gsx20g]

i don't know if its the best way but i have my wastegate on my o2 housing.

 

[tunermag]

No shit. I'd be willing to bet this would literally outspool the .55 a/r DSM bolt-on turbine housing from Bullseye Power on the right setup!

If I didn't already purchase the ERL manifold for my AWD (T3 undivided) I would DEFINITELY be interested in this housing.

I still think we need the details of where it came from and such just for reference reasons.

Ok, I'll talk tomorrow with the dealer and get the most details about the housing.

 

[1gDSM4g63]

i don't know if its the best way but i have my wastegate on my o2 housing.

When you have a non-Mitsubishi turbo housing most if not all external wastegates are flanged off the manifold to make if easier of not fabricated a o2 housing.

 

[dsm-onster]

Without scrolling through 100 pages of the Holset thread... How much sooner does a twin scroll manifold spool up a stock Holset housing? DSM-onster's summary is for non-divided manifolds and the various HX's, but what do you see WITH a divided manifold? This might help the decision between manifold choice since there doesn't seem to be any problem with running a divided turbo with a non divided manifold.

The 16cm^2 housing spools the hx40 to 30psi by 3900rpms with a 2.0L: click. And, here in the Holset Results thread is the 17cm^2 housing seeing 30psi by 4200rpms. Typical results with the bolton housing: 20psi by 4100rpms.

I'd ASSume the 18-19cm^2 housing should put the spool speed about the same as the bolton housing. I've not swapped to the hx40 yet with my twinscroll adventures.

The open .70 a/r housing typically spools the hx40 to 20psi by about 4500ish rpms. So, the .70a/r housing divided with the proper divided manifold would be rediculously fast spooling. You're going to lose some topend potential though vs. the .70 a/r open housing, since each exhaust pulse will see half of the .70 a/r critical area.

 

[tunermag]

Tks for the info dsm-onster

I've got a quote here for the quick spool valve fabrication. It'll be around U$S 75 without the actuator. I think it worth the test. What do you think ?

Moreover, I've talked with the holset representative, they told me that they use a rare UK housing but he couldn't give me more specs. Anyway, this week he will give me some pictures of the build process that I asked for. I'll post those pictures and maybe you could figure out what housing is and what they do to fit the wheels.

 

[black_gst]

shoot send me a quickspool valve @ that price. ill take a .70 a/r TS housing too

 

[PieEyedPiper]

Apparently these guys used to make a version of this part but they got threatened with legalities. I'm not sure if they have resumed production. They were looking for a new way to actuate the valve.
PMW Home

 

[DraginX]

I think if you have access to a machine shop and you can make one of those valves cheap, you might as well try it. I'll be making one this summer and seeing how it works, if it spools my big 19cm^2 housing well I'll stick with it, if not I'll be building a twin scroll manifold. Ultimately that is my plan and will net you the best results with your turbo compared to an undevided manifold. As for the quick spool valve there hasn't been enough testing with it to really know how they work, but I think they could have potential.

 

[Strm Trpr]

I plan to buy a divided manifold for use with my future 7-blade HX35 on my Long Rod 2.0L.
I found a shop that sells 12cm^2, 14cm^2 and 16cm^2 divided housings with a short 3" v-band outlet.
One guy estimated that a 12cm^2 divided set-up will see full boost by 3k, but I think that might be a little bit too optomistic, but then again, who knows, no one really?
I'm waiting to hear back from that shop still.
If I can get a decent price on all three hotsides, I'll snatch them up and test all three of them.

These are the housings I'm talking about, but they only have a 16cm^2 in stock, but you get the picture.
http://www.htturbo.com/thnew.htm

 

[tunermag]

Finally, I went for a JMF divided T3 manifold and two Tial MVS wastegates.

I'll hope to get those soon at home.

 

[Strm Trpr]

Right on, JMF makes a very good product.
Fortunately for you, you have a 1g, so the manifold will not interfere with the upper radiator hose at the radiator inlet like it would on a 2g.

I received my HX35 this past week.
It's in XLNT shape.
I even got the oil feed and return lines.

Did you ever find out anything else about your turbo?
I want that turbine housing!

Anyone else know of a way to get a hold of a Holset catalog or something that catalogs the different Holset HX35 Turbine housings that are available?

Finally, I went for a JMF divided T3 manifold and two Tial MVS wastegates.

I'll hope to get those soon at home.

Hey man, I called Cummins Turbo Tech back in Tennessee and had her run your Holset Tag number trying to figure out what hotside that is.

Is your first line of numbers 4035235?
If so, she said you have an HX40 turbo.

If you can, remove the Compressor cover and measure the compressor wheels inducer diameter and exducer diameter with a set of calipers.

You might want to measure the center to center distance of the bolt pattern on that turbine housing inlet.

A normal T3 inlet flange bolt pattern is 44.5mm x 86mm.

If your numbers are different and you ordered a JMF Divided T3 Manifold, then you just bought a $1000 paper weight.

Let us know what's up...

 

[tunermag]

Hi, the Holset dealer here still have to send me the pictures of the building process.

The number you've posted is right (4035235) but they build this turbo using different housings and the exhaust part is flanged for a Divided T3.

Right now, I don't have the turbo. I'll ask my mechanic on monday to measure the compressor inducer and exducer.