Holset Turbos, PART 3

[Spidey]

I've read through most of the threads and didn't see anything, so I'm going to ask: has anyone run an 8-blade HX35 with the stock Holset divided T3 housing? I'll be running this setup soon, the car runs now but I need to finish the exhaust up, just curious if anyone already has any results.

PS - long time no see to a lot of you, my car has been down for a while due to a friend crashing it, nothing serious, but I've thrown on some other goodies since then.

[kraka]

Is the Hx40pro more comparable to a BW S258 or like an S300 series.

I have decided that I would really like a BEP HX40pro or BEP S258 for my next setup, obviously with the Holset being cheaper but the BW spooling faster and being more effecient at 20-25psi, I imagine.

[drewvr4]

Originally Posted by Spidey

I've read through most of the threads and didn't see anything, so I'm going to ask: has anyone run an 8-blade HX35 with the stock Holset divided T3 housing? I'll be running this setup soon, the car runs now but I need to finish the exhaust up, just curious if anyone already has any results.

PS - long time no see to a lot of you, my car has been down for a while due to a friend crashing it, nothing serious, but I've thrown on some other goodies since then.

I have the 8 blade but its hooked up with a Bullseye DSM housing.

[Spidey]

Any dyno data/DSMlink logs/track times?

[drewvr4]

Originally Posted by Spidey

Any dyno data/DSMlink logs/track times?

i just got it up and running yesterday, with a pretty poor tune on dsmlink running around 11:1 afr on 14psi dsmlink recorded something like 300hp and 290ish torque, spool time is lame because the exhaust flapper on the internal gate i didnt weld so it leaks threw it, so spool time is around 4500 rpm

stock motor, stock cams...you can read my profile for mods

[Spidey]

Cool, looks like we'll be running similar setups(stock motor/cams here too, though I have a 6-bolt w/ 8:1cr) aside from the turbine housings. I really need to order some flanges and get this exhaust done, ugh.

[drewvr4]

Originally Posted by Spidey

Cool, looks like we'll be running similar setups(stock motor/cams here too, though I have a 6-bolt w/ 8:1cr) aside from the turbine housings. I really need to order some flanges and get this exhaust done, ugh.

That was one of the motor complicated problems with mine, as the compressor housing hit the block with my Slowboy manifold, had to end up spacing it out with a 1/2" flange and extending everything out to reason it, wastegate is still open dump till i can roll over to the exhaust shop and have something fabbed up

[dsm-onster]

Originally Posted by kraka

Is the Hx40pro more comparable to a BW S258 or like an S300 series.

I have decided that I would really like a BEP HX40pro or BEP S258 for my next setup, obviously with the Holset being cheaper but the BW spooling faster and being more effecient at 20-25psi, I imagine.

How quickly does each BW spool? The traight hx40 pro (non-hybrid) in the .55 a/r bep housing spools under 4K. This turbo really should have the .70 a/r bep housing. Or a holet 14cm^2 turbine housing. Maybe a 12cm^2 housing would be enough. But there is one dsm that has put down 600 whp in the .55 a/r housing. That is about at the limit of the compressor around 66 lbs/min or a little over 900cfm. The first page of this thread has the efficiency map of this turbo but it doesn't show the higher 133K rpms line that really shows the potential of the compressor like the below map. Otherwise, the maps overlap each other perfectly.

[ceedawg]

Originally Posted by dsm-onster

How quickly does each BW spool? The traight hx40 pro (non-hybrid) in the .55 a/r bep housing spools under 4K. This turbo really should have the .70 a/r bep housing. Or a holet 14cm^2 turbine housing. .

Well that's good to know. With a 16 cm housing how would that compare to the 14cm?

[kraka]

Wow, didn't realize there was a .70 BEP, just a .70 T3.

How do HX40's compare with 40pro's, the regular HX40 are easier to find?

The BWS200 series definitely do not make as much power as you are describing the HX40 as making. It's very exciting to know, although that compressor housing looks gigantic! I don't mind using a NT water pipe but if I would have to use a spacer or do some fab work then forget it.

[GORBS88]

Originally Posted by kraka

Wow, didn't realize there was a .70 BEP, just a .70 T3.

How do HX40's compare with 40pro's, the regular HX40 are easier to find?

The BWS200 series definitely do not make as much power as you are describing the HX40 as making. It's very exciting to know, although that compressor housing looks gigantic! I don't mind using a NT water pipe but if I would have to use a spacer or do some fab work then forget it.

The bullseye .70 a/r housing only comes in a T-3 inlet.

[kicker91laser]

Has anyone ran the hx40 with the .70 t3 housing? If so, how were the spool characteristics? This thread has alot of great info

[IPT]

I just talked to David @ BEP. They can make more of the BOLT on housings, but they will have to be out of stainless steel and that means more money. And they can't just do one or two at a time it would make the cost of the housings WAY too much.

[dsm-onster]

I just talked with Nick at theturbotrader.com. He is getting a shipment of the stainless steel turbine housings this month from BEP. These are the .55 a/r housings for hx35 or hx40 with the Mitsu inlet flange. The carbon steel are being "discontinued". I can't remember everything in the conversation, but I believe you can get the .70 a/r housing in stainless, as well. T3 only though. They are a little more expensive. But look nicer and keep the holsets bolt-onish for the time being. At least I still have a home for mine.

EDIT: I see you're on the ball, Nick ^^^^^

[IPT]

Originally Posted by dsm-onster

I can't remember everything in the conversation, but I believe you can get the .70 a/r housing in stainless, as well. T3 only though.

These are Iron housings.

[dsm-onster]

Originally Posted by IPT

These are Iron housings.

Thanx ! I will be getting an hx40/h1e in the mail, but don't want to play with it until I get my smaller one rolling. The .70 a/r would be perfect, IMHO. Or a 14 cm^2 twin scroll. I keep going between the two. The .70 a/r BEP would be much more affordable than sourcing or cutting a 14cm^2 to fit and then dealing with the outlet. But twin scroll is a bit more efficient.

[kicker91laser]

The .70 t3 housings are not a bep housing correct? Anyone know what the ss mitsu housings will run? If I knew they were going to cast some ss ones, I wouldn't have bought the carbon steelies

[IPT]

The other stainless steel housings I have seen for sale run around $220. Those are the 4/5 bolt housings. I would imagine the SS DSM housings would be simularly priced.

[dsm-onster]

The H1E/WH1E I have here is brand new! I paid under $300 for it. It's got the 58mm 8 blade compressor. The blade shape and number of blades is identical to my H1C, just 4mm larger inducer and a MWE groove . The exducer is the same as my H1C, so I feel ok running this compressor with the smaller hx35/h1c turbine. The major diameters of the wheels would be outside of the 10% sizing rule. 70mm/81mm is 86%. But early hx35s all h1Cs are already running that same wheel diameter ratio from the factory. 7 blde hx35s run a worse ratio. With the compressor swap, I also get a MWE groove. This larger compressor may outflow a h1c/hx35 turbine in the .55 a/r bep housing. But I think running the .70 a/r housing with the h1c/hx35 turbine would be good enough to merit the upgrade.

. . .I'm reviewing my speculations about the three hx40 compressor maps we have from holset. It makes no sense that the smallest map is the map of the 8blade hx40. It has a 58mm compressor inducer for goodness sake!!! This thing has to flow more than what that small map depicts. The Garrett gt4082 has a 58mm inducer and 82mm exducer, a 58lb/min compressor. The 8 blade hx40 has a 58mm inducer and 81mm exducer. The Hx40/h1E has more blades, which assist in more boost early without needing to reach higher compressor rpms. More blades just "get in the way" at higher flows. So it clearly flows less than a garrett gt40 compressor, but it should flow WAY more than 45 lbs/min seen in that little hx40 map on the first page of this thread.

Anyway, the compressor cover and compressor wheel is interchangeable from what I see and research. All the diesel forums say the samething: The hx compressors and turbines/shafts are balanced individually from the factory, so there's no need to get a rebalance after swapping in a new wheel; but the H1 turbos were balanced as an assembly.

I've never swapped compressor wheels before. I wonder if you can have the individual wheels balanced separately so that you can interchange between them at will , though they wern't originally balanced that way. . . It's likely much more expensive.