Holset Turbos, PART 4

[JWoodley]

I can't wait to get my car back running with cams, smim, and meth. Ahhhhhhh it's killing me!

 

[GORBS88]

How is spool with the t3 housing?


Great mph for the time! You should be able to hit a 10 for sure with some traction!

i make 20psi in 4th gear at 4400rpm, thats with 272 cams. No to bad at all.

 

[95tzlgst]

That seems really good. I can't wait to get my car finished now.

 

[T9S1i]

i make 20psi in 4th gear at 4400rpm, thats with 272 cams. No to bad at all.

thats about on par with my s258 t3 .70 housing. I'll have to check 4th gear tomorrow when i drive the car but its pretty similar.

 

[andy4g63]

Nice job, Mike. Congrats.

 

[v8killer]

what size intercooler cores are you guys running with 2g's i have almost everything orderd to install my holset hx35 !

 

[TxR6guy]

Well today i bought Holset Hx-40 PRO from Maperformance w/ the Mitsu Housing. Should be here in 2 weeks he said from Bullseye. I really didnt want to mess with the Ebay stuff and take chances with it. All in all it ran me $1158 for everything including lines and filter and turbo.

Kuddos to CHris at Maperformance for great service and help.

 

[90CherryBomb]

what size intercooler cores are you guys running with 2g's i have almost everything orderd to install my holset hx35 !

I am using a 24x10.5x3.5 Buschur Racing core that was designed for an evo and slightly modified. I didn't know it was an evo core at the time, but I got it at a real great price.

 

[biglady112]

Dyno numbers inside now.

http://www.dsmtuners.com/forums/turbo-system-tech/307988-holset-volvo-hx-52-dyno-sheets.html

 

[dsm-onster]

Like I said in the other post, that giant isn't even awake and had his coffee yet. 26psi . Great job! Great numbers!

 

[Ceddy]

My Holset project is starting to come together, and I still have a couple questions for the experts on here.

Power wise I'm not trying for anything extreme. I'd like something similar to a 20G, fast spooling and fun, but with enough power to scare you a little.

I picked up the .55 A/R housing for my WH1C(HX-35)[Bullseye still has a few].
I have a dual boost controller, it runs my stock spring(14 psi) and whatever I set my controller to(22 psi).

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Do I need to port the wastegate hole larger to run low boost(14 psi) without spiking or creeping?

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What else should I do to help the turbine housing perform?
Make the inside polish smooth? I have heard having some ruffness/turbulence promotes flow.

Also one of the CHRA bolt holes goes right through the housing. Is this anything to worry about?

I'm running a stock manifold, at what power level does it start to become a restriction?


For my oil setup I'm getting M12x1.5 fitting for the feed and getting it from the head. I will also have a large size restrictor(1/16"). [B-Shafts are removed]

For the drain I'm getting a T3/T4 style flange.

Are there any advantages to using the NT water pipe over a plugged 1G pipe? [I have a 6-bolt with 1G water neck]


Thanks for help and all the great info.

 

[Mike1992]

I plan on jumping back in the game, but instead of a HX-35 I wanna try a HX-40 this time around. Are all the HX-40 turbo's 60/85mm??? What compressor blade combination flows the best (6, 7, 8)

I recommend the guy above to use a 1g NT Water pipe for ease of installation and a cleaner look. If you go External off the o2 Housing I also recommend porting the living snot out of the wastegate passage. Use a socket from your toolbox for reference and port the hole to at least 38mm (match your wastegate entrance) Creep sux and I had it bad back when I had my HKS Gate off the o2 and an unported bullseye housing. I'm going manifold mounted gate this time around.

 

[ceedawg]

I am using a 24x10.5x3.5 Buschur Racing core that was designed for an evo and slightly modified. I didn't know it was an evo core at the time, but I got it at a real great price.

Excellent. I am thinking of trying the Bushur Racing 1g 24x13x4" FMIC on my 2g or the AMS racing intercooler.

 

[dsm-onster]

My Holset project is starting to come together, and I still have a couple questions for the experts on here.

Power wise I'm not trying for anything extreme. I'd like something similar to a 20G, fast spooling and fun, but with enough power to scare you a little.

I picked up the .55 A/R housing for my WH1C(HX-35)[Bullseye still has a few].
I have a dual boost controller, it runs my stock spring(14 psi) and whatever I set my controller to(22 psi).

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

Do I need to port the wastegate hole larger to run low boost(14 psi) without spiking or creeping?

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

What else should I do to help the turbine housing perform?
Make the inside polish smooth? I have heard having some ruffness/turbulence promotes flow.

Also one of the CHRA bolt holes goes right through the housing. Is this anything to worry about?

I'm running a stock manifold, at what power level does it start to become a restriction?


For my oil setup I'm getting M12x1.5 fitting for the feed and getting it from the head. I will also have a large size restrictor(1/16"). [B-Shafts are removed]

For the drain I'm getting a T3/T4 style flange.

Are there any advantages to using the NT water pipe over a plugged 1G pipe? [I have a 6-bolt with 1G water neck]


Thanks for help and all the great info.

I have no creep issues with my h1c in the bep housing. We have the same turbine. And my housing was used. I bought it with the flapper hole welded shut. So I opened it up. But it is a little smaller than 38mm. More like 36mm. It's held rock solid down at 5psi before (stock ebay WG spring pressure).

BTW, could you confirm with us the inducer diameter of the WH1C? There's different information on the web. Some say that it is the same diameter as the big H1C (54mm). Some say it is 56mm, the same as the early hx35 turbos that came out the next year (1995). If you could double check that I would be VERY appreciative. It would be good to know.

 

[Slippi84]

Excellent. I am thinking of trying the Bushur Racing 1g 24x13x4" FMIC on my 2g or the AMS racing intercooler.

I had that size Ic on my old talon fit real nice. Of course I took off the bumper support completely though so it had a lot of room . WIth the new setup I"ll be going with a VERY short water to air IC setup with heat exchanger in front of the radiator.

 

[v8killer]

what sive v-band is on the compressor oulet on the hx-35 ? i need to get one.

 

[andy4g63]

My Holset project is starting to come together, and I still have a couple questions for the experts on here.

Power wise I'm not trying for anything extreme. I'd like something similar to a 20G, fast spooling and fun, but with enough power to scare you a little.

I picked up the .55 A/R housing for my WH1C(HX-35)[Bullseye still has a few].
I have a dual boost controller, it runs my stock spring(14 psi) and whatever I set my controller to(22 psi).

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

Do I need to port the wastegate hole larger to run low boost(14 psi) without spiking or creeping?

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

What else should I do to help the turbine housing perform?
Make the inside polish smooth? I have heard having some ruffness/turbulence promotes flow.

Also one of the CHRA bolt holes goes right through the housing. Is this anything to worry about?

I'm running a stock manifold, at what power level does it start to become a restriction?


For my oil setup I'm getting M12x1.5 fitting for the feed and getting it from the head. I will also have a large size restrictor(1/16"). [B-Shafts are removed]

For the drain I'm getting a T3/T4 style flange.

Are there any advantages to using the NT water pipe over a plugged 1G pipe? [I have a 6-bolt with 1G water neck]


Thanks for help and all the great info.

Everything seems OK to me, there is only one thing that you might want to address. I am assuming you are running internal WG, even so may be a good idea to smooth the edges, /NOT TO PORT/ on the shiny hole, which leads to WG flapper. Again, just make the edges round. It is not a restriction, it is just may cause a little creep, at least that is what a TIAL rep told me. I had external/Tial/, and had a almost unnoticable creep - 1PSI, so he said /Tial guy/, that might be the reason for it.

 

[dsm-onster]

what sive v-band is on the compressor oulet on the hx-35 ? i need to get one.

I just used my massive Popeye hand and forearm muscles and made a 2.5" 3 ply silicone coupler fit. . .

 

[Ceddy]

BTW, could you confirm with us the inducer diameter of the WH1C? There's different information on the web. Some say that it is the same diameter as the big H1C (54mm). Some say it is 56mm, the same as the early hx35 turbos that came out the next year (1995). If you could double check that I would be VERY appreciative. It would be good to know.

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55.98 mm

I thought the WH1C was a Big H1C with the MWE groove cut in the cover, guess I was wrong. Hopefully those 2 extra mm will give me a couple extra lbs of flow. It is nice to be wrong on the good side once in a while.

I didn't know there were different size HX-35s. What year did they switch?
So a WH1C is exactly the same as a early HX-35?

 

[dsm-onster]

The hx35 has commonly a 7 blade with a 56mm inducer and a smaller exducer. There is an older hx35 with a 56mm 8 blade compressor with the same exducer diameter as the h1c and the wh1c. Apparently, the wh1c is the same as the 8 blade 56mm hx35. There could be aerodynamic differences. Either way, this is good to know. The hx35 flows a little more than the big h1c, and is 2mm larger at the inducer. This could mean that the wh1c could flow the same as the hx35 or around 52 lb/min (4lb/min more than a 20g). The spool will be about the same as an hx35 or my big h1c, of course.

I dont know what year the switch occurred. I don't know if there are even other hx35 wheels out there. You know Holset .

 

[95tzlgst]

I plan on running an hx35 and I wanted to know if my oil filter housing would be ok to use as a feed?

 

[dsm-onster]

If you have b-shafts then you're OK.

 

[95tzlgst]

When I rebuild my motor I plan on eliminating the b- shafts. So I should run the feed from the head when I do that right?

 

[90laserRSfwd]

Feed the OFH and use a restrictor...

 

[aero_sallee]

Sorry I'm having a hard time picturing this setup in my head could you get a picture of this as I have just stumbled upon a HE351VE and would like to eventually run it once my car can support it. Like did you have to do anything custom to mount the 14b wastegate actuator?

edit: Found picture of your modified manifold but none of 14b actuator controlling vgt.

Got underneath and took another picture of the arm on the turbo.

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The two non rusty areas of the flat are where epoxy or a blockoff plate must be put in, they are the coolant feed holes for the electric actuator.

The hole the stud went in, is already there and not round. It is meant as part of the method they use to index the VGT position when installing the actuator and the turbo on the truck. I lightly filed the threads on the other end of that stud, and it went in with some tapping from a hammer. Fits very snug and isn't going anywhere.
You could drill it out round, and tap it for a larger stud, but this worked just fine. The metal up nearer the gear is very hard, not sure about where the hole is, but I'd guess its much the same.