Holset Turbos, PART 5

[Slippi84]

Just got my HX40W and t3 housing in today. That thing weighs a ton with the stock Holset turbine housing on. , i was like WTF. Im getting the housing ceramic coated, then slapping it on.

James

Yeah I thought the same thing till I got my hx52 and struggle to carry it from the car to the closet

 

[VETTE_50_TH]

Yeah I thought the same thing till I got my hx52 and struggle to carry it from the car to the closet

Im afraid to hang that from the manifold. Thats so much tension on that and the head to support it.

James

 

[Slippi84]

Im afraid to hang that from the manifold. Thats so much tension on that and the head to support it.

James

I thought the same thing but it's all about your manifold. My JHR manifold is stout and I trust it but I may still rig up some kind of support for this things.

 

[dsm-onster]

If you have a good bracket close to the turbo on your exhaust, E.G. just after the down pipe, that should help alot. I still recommend a support. Or of course, a manifold that doesn't crack.

 

[Slippi84]

If you have a good bracket close to the turbo on your exhaust, E.G. just after the down pipe, that should help alot. I still recommend a support. Or of course, a manifold that doesn't crack.

I have a manifold that doesn't crack but It's more just for peace of mind.

 

[VETTE_50_TH]

Im thinking about running a ERL or punishment. I like the ERL just because its cast and looks nice.

James

 

[dsm-onster]

Who has a 10blade hx40 turbine wheel and who has a 12blade hx40 turbine wheel? My h1e (hx40) has a 12blade turbine wheel.

The diamters and blade contour between these wheels are the same. However, the 10blade wheel spools faster (with better transient response), but the 12blade flows 10-15% more with the same a/r housing. On a 600whp setup, that is over 60whp! However of course, you could run the 10blade wheel, use a larger a/r housing and reach massflow required to get the work done on the compressor to achieve the same boost at a LOWER back pressure. All the while keep the same spool speed, if you can swap between housings and find the right combination. Good thing holset has housing choices in incriments of 2cm^2 which is more "resolution" than other brands.

All this is according to an interesting discussion over on saablink.net. Backed by some logs between the two turbine wheels on the same setup. Read the entire discussion for some good turbo comparisons and solid results.

 

[VETTE_50_TH]

Think i should try to sell my exhaust housing around here to a diesel shop? I dont need it and its in perfect condition.

James

 

[kicker91laser]

Who has a 10blade hx40 turbine wheel and who has a 12blade hx40 turbine wheel? My h1e (hx40) has a 12blade turbine wheel.

The diamters and blade contour between these wheels are the same. However, the 10blade wheel spools faster (with better transient response), but the 12blade flows 10-15% more with the same a/r housing. On a 600whp setup, that is over 60whp! However of course, you could run the 10blade wheel, use a larger a/r housing and reach massflow required to get the work done on the compressor to achieve the same boost at a LOWER back pressure. All the while keep the same spool speed, if you can swap between housings and find the right combination. Good thing holset has housing choices in incriments of 2cm^2 which is more "resolution" than other brands.

All this is according to an interesting discussion over on saablink.net. Backed by some logs between the two turbine wheels on the same setup. Read the entire discussion for some good turbo comparisons and solid results.

Very interesting info, Matt. When you stated the 12 blade flowed better, I thought you had made a typo, but after seeing the 10 blade wheel, I believe it. My 6 and 7 blade hx40 both have 12 blades on the turbine. I have a buddies 8 blade h1e here, I will see what it has.

 

[TimG]

Think i should try to sell my exhaust housing around here to a diesel shop? I dont need it and its in perfect condition.

James

Probably not.

So has anyone got their HX-52 to the track yet?

 

[GST95]

Who has a 10blade hx40 turbine wheel and who has a 12blade hx40 turbine wheel? My h1e (hx40) has a 12blade turbine wheel.

The diamters and blade contour between these wheels are the same. However, the 10blade wheel spools faster (with better transient response), but the 12blade flows 10-15% more with the same a/r housing. On a 600whp setup, that is over 60whp! However of course, you could run the 10blade wheel, use a larger a/r housing and reach massflow required to get the work done on the compressor to achieve the same boost at a LOWER back pressure. All the while keep the same spool speed, if you can swap between housings and find the right combination. Good thing holset has housing choices in incriments of 2cm^2 which is more "resolution" than other brands.

All this is according to an interesting discussion over on saablink.net. Backed by some logs between the two turbine wheels on the same setup. Read the entire discussion for some good turbo comparisons and solid results.

My first hx40 i got has a 10 blade turbine, but its all chewed up
I couldnt find any info on this turbine even when contacting a few holset dealers. I havent seen many of them. Good info to know though.

heres mine

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[Iroc_g]

WOW. That thing is rough! Looks like that thing ate a few valves.

I believe my HX40 has the 7blade billet compressor wheel, and a 12 blade turbine wheel. Its at home, so if im wrong I will correct myself.

Are the two wheels identical in dimensions, and only blade differences?

 

[Slippi84]

Probably not.

So has anyone got their HX-52 to the track yet?

Still building but from the looks of it other than biglady's friend I"m the only one dead set on pushing the hx52.

 

[dsm-onster]

Considering how much the pro wheel flows and how fast the 12blade wheel spools, I'd think the best combination is the 12blade wheel with the pro compressor, and the 10blade wheel with 8blade standard hx40 compressor. . . It's not like the 12blade wheel doesn't spool fast. That is the turbine wheel that commonly reports the 20psi range at 4100rpm in 3rd gear.

Yes, the 10blade and 12 blade both fit in the same foot print (inducer/exducer diameters and contour). The blade sweep and number of blades is different. Perhaps even the hub diameter in the blade volume is different.

 

[VETTE_50_TH]

I have the 7 blade compressor and the 12 blade turbine.

James

 

[ezz-e]

Who is currently supplying the BEP 70 A\R T3 hosuing? I contacted tims turbo but there was no reply from him.

 

[95GSXCO]

Who is currently supplying the BEP 70 A\R T3 hosuing? I contacted tims turbo but there was no reply from him.

The Turbo Trader


Heres my HX40 waiting on the turbo trader to send off my BEP

 

[kawboy]

How do you plan on hooking up your lower intercooler pipe?

 

[95GSXCO]

How do you plan on hooking up your lower intercooler pipe?

I'am going to be using a v-band.

 

[JWoodley]

How do you plan on hooking up your lower intercooler pipe?

I'am going to be using a v-band.

Best way to go IMHO. Enjoy:

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I'd check my turbine wheel blade count but my 02 housing is on and I don't have my hand tools here at the dorm.

If I remember correctly, it has 12. Will verfiy soon.

 

[andy4g63]

You are better off welding that elbow, instead. V-band in this location is PITA and most likely will be close or hitting the motor mount and you have to trim the fan really well. You weld the V-band flange, why don't you welded the elbow in the first place??? I had it like that initially and took it off. It is too big and pain to move and put the O-ring back. Not to mention, that brings the elbow down too much and the rest of LICP is facing elbow with a odd angle, which puts unnessesary pressure on the silicone coupler and makes it blow sometimes. I had to cut the V-band flange off the turbo and cut the elbow little bit and now lines up perfect.

 

[ceedawg]

You are better off welding that elbow, instead. V-band in this location is PITA and most likely will be close or hitting the motor mount and you have to trim the fan really well. You weld the V-band flange, why don't you welded the elbow in the first place??? I had it like that initially and took it off. It is too big and pain to move and put the O-ring back. Not to mention, that brings the elbow down too much and the rest of LICP is facing elbow with a odd angle, which puts unnessesary pressure on the silicone coupler and makes it blow sometimes. I had to cut the V-band flange off the turbo and cut the elbow little bit and now lines up perfect.

Yep i agree! I say it's better to weld an elbow on the compressor outlet and clamp the hose to the end of it.

 

[ali]

well I took off my compressor housing today and I need to rebuild my turbo. There was just enough in and out play for the fins to rub on the housing.

 

[JWoodley]

You are better off welding that elbow, instead. V-band in this location is PITA and most likely will be close or hitting the motor mount and you have to trim the fan really well. You weld the V-band flange, why don't you welded the elbow in the first place??? I had it like that initially and took it off. It is too big and pain to move and put the O-ring back. Not to mention, that brings the elbow down too much and the rest of LICP is facing elbow with a odd angle, which puts unnessesary pressure on the silicone coupler and makes it blow sometimes. I had to cut the V-band flange off the turbo and cut the elbow little bit and now lines up perfect.

Not sure what elbow you used, but mine is perfect and has no clearance issues. Refer to the results thread for pictures.

Yep i agree! I say it's better to weld an elbow on the compressor outlet and clamp the hose to the end of it.

Whatever works for you guys. This setup is in the perfect spot for a SSAC FMIC. Off of that elbow I have a straight piece to the endtank with an elbow welded to it.

 

[ali]

who know where I can get a turbine wheel for an WH1C

thanks, ali