I need to know if I can make the holset divided t3 hotside on the turbo I listed above bolt onto the Dark performance divided T4 manifold I already purchased, or would I need to buy a holset divided t4 turbine housing to make it work? Also, is that turbo the 6 blade model?

jkimes said:

I need to know if I can make the holset divided t3 hotside on the turbo I listed above bolt onto the Dark performance divided T4 manifold I already purchased, or would I need to buy a holset divided t4 turbine housing to make it work? Also, is that turbo the 6 blade model?

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Mine is a 7 blade. WHen I saw the add I thought they were generic pics no they really are that new.

The standard hx40 comes with a t4 bolt pattern. measure the turbine wheel, if you want to be sure you have the hx40 turbine housing. It's very possible holset has t3 hx40s out there. . . But they arn't standard. . .

dsm-onster said:

The standard hx40 comes with a t4 bolt pattern. measure the turbine wheel, if you want to be sure you have the hx40 turbine housing. It's very possible holset has t3 hx40s out there. . . But they arn't standard. . .

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Well this guy is sllin them and seems to have a descent amount of them. I"m not complaining it's perfect I think. A t4 hx40 would just be overkill. This same turbo with a .55ar BEP housing can flow enough for 650whp a divided 18cm t3 housing is like 2 steps up from that if not more so if you need more than this you have some sick goals.

jkimes said:

I need to know if I can make the holset divided t3 hotside on the turbo I listed above bolt onto the Dark performance divided T4 manifold I already purchased, or would I need to buy a holset divided t4 turbine housing to make it work? Also, is that turbo the 6 blade model?

Click to expand...

ONly way is with a T3 T4 adapter which aren't to popular it's just a nother place to leak.

Slippi84 said:

Well this guy is sllin them and seems to have a descent amount of them. I"m not complaining it's perfect I think. A t4 hx40 would just be overkill. This same turbo with a .55ar BEP housing can flow enough for 650whp a divided 18cm t3 housing is like 2 steps up from that if not more so if you need more than this you have some sick goals.

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Well the the t3 hx40 turbine housing and the t4 turbine housing for a holset is the same. For example, the t3 18.5cm^2 h1c turbine housing is identical in dimensions (area, radius, area shape) to the t4 19cm^2 h1e. So a t4 hx40 turbine housing or a t3 holset turbine housing may very well be identical in flow, just a different bolt pattern.

Garrett talors turbine housings to classes of turbine wheels.

A holset t4 hx40 turbine housing isn't that hard to find. Search around. I don't know of a t4-to-t3 DIVIDED adapter . . .

dsm-onster said:

Well the the t3 hx40 turbine housing and the t4 turbine housing for a holset is the same. For example, the t3 18.5cm^2 h1c turbine housing is identical in dimensions (area, radius, area shape) to the t4 19cm^2 h1e. So a t4 hx40 turbine housing or a t3 holset turbine housing may very well be identical in flow, just a different bolt pattern.

Garrett talors turbine housings to classes of turbine wheels.

A holset t4 hx40 turbine housing isn't that hard to find. Search around. I don't know of a t4-to-t3 DIVIDED adapter . . .

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Good point. I havent seen them either just open.

I just found another one that looks to be a standard hx40. Is this the one I would need with 6 blades and a t4 divided housing?

eBay Motors: hx40 dodge cummins turbocharger 1998.5-2005 (item 220271983275 end time Aug-26-08 15:36:24 PDT)

That looks like a 19cm^2 turbine housing and t4 flange. If that were a 6-blade, I'd say go for it for your goal! The 8blade is plenty for my goal, but I already hae an 8-blade h1e with a 19cm^2 housing.

What I want to know is where can I find one of these 6 blade HX40's like Badman21 is using? Every HX40 I see on ebay is a 7 or 8 blade (as I assume your talking about the number of blades on the compressor wheel)???

^^Yes the compressor wheel. I would go for the 7 blade(super 40) suppost to be the highest flowing hx40 67-68lbs/min. I think I heard it was better than the 6 blade, but have yet to see any comparisons. Try searching all the diesel cummin forums out there. The last time I checked they had tons of hx40's for sale.

Thanks for trying to help, but I'm looking for a divided t4 hotside with vband output so the one you listed is not really applicable for me. The turbo in the ebay auction I linked to above shows the following specs:

4" Inlet Diameter

3" Compressor Outlet Diameter

T4 Divided Entry Exhaust Inlet

4" Exhaust V-Band Outlet

Journal Bearing

800 HP+

Compressor Wheel

72 lb/min Air Flow

Ind: 56..6 mm

Exd: 74.71 mm

Trim: 54.8

Turbine Wheel

4" V-Band

Ind: 76 mm

Exd: 64 mm

I just need to know if this is a good match for my 2.4 or If I'm better off looking for a 6blade with a different size inducer. Were the inducer sizes dsm-onster referred to earlier the turbine or compressor inducer sizes?

jkimes said:

Thanks for trying to help, but I'm looking for a divided t4 hotside with vband output so the one you listed is not really applicable for me. The turbo in the ebay auction I linked to above shows the following specs:

4" Inlet Diameter

3" Compressor Outlet Diameter

T4 Divided Entry Exhaust Inlet

4" Exhaust V-Band Outlet

Journal Bearing

800 HP+

Compressor Wheel

72 lb/min Air Flow

Ind: 56..6 mm

Exd: 74.71 mm

Trim: 54.8

Turbine Wheel

4" V-Band

Ind: 76 mm

Exd: 64 mm

I just need to know if this is a good match for my 2.4 or If I'm better off looking for a 6blade with a different size inducer. Were the inducer sizes dsm-onster referred to earlier the turbine or compressor inducer sizes?

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That would make for a real nice setup. Holset turbos are verry efficent too and spool very fast for non bb turbos with the flow capabilities of larger turbos.

jkimes said:

Thanks for trying to help, but I'm looking for a divided t4 hotside with vband output so the one you listed is not really applicable for me. The turbo in the ebay auction I linked to above shows the following specs:

4" Inlet Diameter

3" Compressor Outlet Diameter

T4 Divided Entry Exhaust Inlet

4" Exhaust V-Band Outlet

Journal Bearing

800 HP+

Compressor Wheel

72 lb/min Air Flow

Ind: 56..6 mm

Exd: 74.71 mm

Trim: 54.8

Turbine Wheel

4" V-Band

Ind: 76 mm

Exd: 64 mm

I just need to know if this is a good match for my 2.4 or If I'm better off looking for a 6blade with a different size inducer. Were the inducer sizes dsm-onster referred to earlier the turbine or compressor inducer sizes?

Click to expand...

Thats the smallest hx40 you can get. Get the 58mm or 60mm inducer(6 blade or 7 blade).

The 6blade has a 60mm inducer. And there is an aftermarket 8-blade 60mm floating around. There's a special 7blade that is larger than 60mm, according the htturbo and other shops. . . It may be an hx52 wheel . . . I don't know about it.

That first one you posted is an hx35 not an hx40 any way. This second one you posted is an 8blade hx40 which is about like a t3stage5 60-1. Flows about 58lb/min. And should have good spool. But isn't like the 6-blade hx40 which can flow 67lb/min.

jkimes said:

Thanks for trying to help, but I'm looking for a divided t4 hotside with vband output

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jkimes, you might be interested in following the testing that is currently underway by Geoff at Full Race. They are about to start testing pretty much the whole lineup of Borg Warner turbos with divided T4 housings. Geoff is totally into twin-scroll turbos, and he prefers T4 to T3 when it comes to divided housings. They also sell twin-scroll versions of the Garrett GT turbos. Geoff told me a few days ago that they are finishing up their testing of the Garrett turbos, will be testing some Turbonetics next, and the Borgs after that. Some of the Borgs he is talking about are so new that they are not even really available yet. Anyway, I don't think their test info will ever be put out for the whole world to see. But you can find out stuff about the results by email, Geoff will correspond with you. Here is a link to their BW page:

Full-Race Motorsports LLC Call us toll free at (866) FULL-RACE

Be sure to take a look at the "T4 twinscroll TS360". It might be a little too small if you really want 700 whp but it looks like it should be a heck of a turbo.

Gary

HAHA.. That link is almost funny. Full-race has finally figured out what other shops have known for over a year now. Borg-Warners are good turbos!! the funny thing about those turbos is that they do not talk at ALL about which turbine wheels they are using. Most of the turbine housings they are talking about use a HUGE turbine wheel that will not spool very well.

They should put the s258 up there I think that would be the best selling turbo for the 600hp crowd as it's similar to a sc61 or gt35r in flow.

IPT said:

the funny thing about those turbos is that they do not talk at ALL about which turbine wheels they are using. Most of the turbine housings they are talking about use a HUGE turbine wheel that will not spool very well.

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I emailed Geoff a while back because I was curious too about the turbine wheels. He told me the TS360 uses a 3.00 / 2.66 turbine ( 76.2mm / 67.6mm by my calculator) which sounds like the same wheel bullseye has been using in the S362. And he told me his TS256 uses the 2.74 / 2.420 turbine ( 69.6mm / 61.5mm) which is the SMALLest wheel you see listed on the Bullseye site but when you ask bullseye about that wheel they say they don't really have housings for them and I doubt they have ever sold any.
The compressor wheel in the TS360 Geoff says is the same as the HTA3582 wheel and he has been saying that for a long time. In this case I don't know what "same" is supposed to mean. I don't know if FP is buying them from BW or if FP has copied the wheel, or selling a near copy and paying licensing fees to BW, or what. It could be a number of things and I doubt Geoff knows the whole story there. And it could just be totally wrong for all I know.

Slippi84 said:

They should put the s258 up there I think that would be the best selling turbo for the 600hp crowd as it's similar to a sc61 or gt35r in flow.

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I emailed Geoff suggesting this too. I told him that he should have something in-between his TS256 and his TS360, because his TS256 is smaller than the bullseye S256. His TS256 is smaller not only the turbine but also the compressor exducer is smaller. So I said hey you should put a TS258 in there with the 80mm exducer compressor wheel.

Gary

Well, the s258 is such a better performer in spool than the gt35r with matching flow. And he probably has alot of gt35r turbos in stock he has to sell. Being that they cost more, he'll never get those 35R's sold if he offers the s258 .

dsm-onster said:

Well, the s258 is such a better performer in spool than the gt35r with matching flow. And he probably has alot of gt35r turbos in stock he has to sell. Being that they cost more, he'll never get those 35R's sold if he offers the s258 .

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soo true. If we don't see any post from dsm-onster for a while we'll knwo it's cause geoff sent his Honda henchmen to get him for messing up his gt35r sales .

Slippi84 said:

If we don't see any post from dsm-onster for a while we'll knwo it's cause geoff sent his Honda henchmen to get him for messing up his gt35r sales .

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Hey that reminds me, I asked Geoff about his test motor because I thought maybe it would be a HONDA. Nope.
" 2.1L long rod motor, stock intake manifold, tomei 280 cams, great test bed to work with "
is that motor a Mitsu or a Honda? "that is an evo 8 motor with stock evo intake manifold"

Gary

dsm-onster said:

Well, the s258 is such a better performer in spool than the gt35r with matching flow. And he probably has alot of gt35r turbos in stock he has to sell. Being that they cost more, he'll never get those 35R's sold if he offers the s258 .

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According to the compressor maps, the efficiency island for the S258 turbo is to the left of the GT35, which would in theory give the GT35 more power when you start flowing the 50+ lbs / min

Look at the height of the graph. We run 4cylinders . 35psi puts you at the highest rpm curve on the gt35r (56-trim) map at 55lb/min and off the map at 60 lb/min. The s258 isn't even close to 120K rpms at 35 psi ever. Hence the faster spool and less exhaust energy (gases) needed. More gases are wastegated and the total engine VE goes up. Therefore, better flow.

. . . And if you need to run more boost to flow that kind of mass, then the s258 can do it. No need to upgrade from one SMIM to another, and port the head, and run a stroker kit, or buy 288s and rev to kingdom come. So not only is the BW more affordable, but you don't need such an expensive supporting cast in your engine bay to get similar flow numbers. Just up the boost. Gotta love turbos designed for diesels!