anyone running a Holset turbo?

[new HA guy]

Im looking at either the HX40 or HX52. Anyone have experience with either? My goal is to get the car down to a 10.99 at least, and I'll obviously have whatever supporting mods the turbo I go with requires. I want to make sure I get something that will support my goals easily, and have at least some street manners.

 

[John Wilde]

Do they make a Buick 3 bolt turbine housing?
If not you are looking at more money in a 3 to 4 bolt adapter and down pipe than you will be saving on the turbo.

I would look at the Precision Budget series, specifically that 60/76. At $599 retail it is hard to beat.
http://www.precisionturbo.net/turbo...s/details/Entry-Level-Turbocharger---6076E/64

Most of our supporting vendors sell these too.

 

[CS99]

YEH...on my Case-IH farm tractor !!!!

 

[new HA guy]

I already have a v-band downpipe so that wont matter, and welding on a new 4 bolt flange wont be difficult.
I am just looking to see if anyone has experience running one of these and how well it worked.

 

[99pgpgt]

I know I'm new here (just joined today), but I'm more in the Wbody platform being that I own a 99 GP. I'm building a turbo engine for it and I bought an HX52 for the build. From what we've tested turbo wise on the L36 and L67 engines, an HX40-52 is a very nice size. An HX52 being most comparable to a T67. It has a 4 bolt on it so as you said, not hard to weld a flange on and it has a 3" v-band outlet.

This gives you an idea of the size of the 52

 

[new HA guy]

Keep me updated on how it turns out. Looks like a good sized turbo. If you don't mind me asking, how much did you pick it up for?

 

[new HA guy]

Back shortly after I posted this I went with a HX40.
Im tearing it down for the winter and rebuilding the turbo. Replacement wheels seem to be in tons of sizes. I want something sized similar to a 6262. What confuses me is that each wheel has two sizes (like 75mm x 62mm, and 58mm x 62mm.) Anyone know how to read this? Just want to make sure I get what I want when I order...

 

[99pgpgt]

I am so sorry I didn't respond before to this. I went on vacation the day after I posted in here and completely forgot about the thread.
I picked up the turbo on ebay through a store that sells used turbos. I am still working on building the kit atm, currently I am speccing out a proper cam other than using the normal staged cams offered by the vendors. The turbo has a small amount of play in it but none to be worried about for a little while. A new chra on ebay is 320 which is not a bad price. After further measurements on the 52, I found that what I stated before was completely off... Holset decided to be tricky with the sizes of this turbo.. The inlet flange for the turbine housing is actually slightly larger than a normal t4 flange. Also, the outlet vband flange measures 3.5" id and the od of the flange is 4.75". Resulting in the need for a 4-3" reducer with a 4"id vband flange with a 4.75" od.

If you could, post up as many pics of the hx40 as you can. I will help you with finding the proper size wheel.

 

[forcefed86]

Back shortly after I posted this I went with a HX40.
Im tearing it down for the winter and rebuilding the turbo. Replacement wheels seem to be in tons of sizes. I want something sized similar to a 6262. What confuses me is that each wheel has two sizes (like 75mm x 62mm, and 58mm x 62mm.) Anyone know how to read this? Just want to make sure I get what I want when I order...

All wheels have a major and minor diameter on each wheel. Inlet blade size VS exducer blade size. And HX-40 is very similar to a 60mm P-trim turbo. In fact any 3 bolt P-trim housings can be machined very cheaply and will work well with an HX-40.

The 7 blade 60mm HX40 has proven to be the work horse HP wise on smaller engines. These have a 60mm minor and 86mm major on the compressor. 64/76 on the exhaust wheel. I run a 60mm 6 blade billit wheel HX40. At 34psi I'm well into the 500hp range on my 2 liter 4 banger. I bought a t3 .63 housing for my hx40 for $200 from tims turbos on ebay. The housings that come on the hx40 (usually 18cm) will be very laggy, even on a 3.8. (seem image below for comparison)

Also note that the drains on holsets are very large. 19cm (basically 3/4"). Holsets need a good AN-4 (some use -6) supply and 3/4" drain if you want them to live a long healthy life. I used 3/4 copper piping and sweated it together.

IMHO an hx40 actually on the small side for a 3.8. Hx52 has a better sized compressor, but the exhaust wheel is huge and the factory housing is masive as well. Be lucky to spool it by 5k. I'm not aware of aftermarket housings being made for the hx52 either.

 

[frank_ster]

i'm running a hx 35w on my 3.8 thus far 117 mph at 19 lbs boost on a stock fwd block and cam (1990 pontiac sunbird fwd). have since upgraded the cam and will eventually get some new numbers in this awd car (subaru legacy ).
from the looks of this thread its on the small side. i found a company that makes proformance compressor wheel and housing to get better intake flow, but what about the exhaust ?

 

[forcefed86]

i'm running a hx 35w on my 3.8 thus far 117 mph at 19 lbs boost on a stock fwd block and cam. have since upgraded the cam and will eventually get some new numbers if this awd car.
from the looks of this thread its on the small side. i found a company that makes proformance compressor wheel and housing to get better intake flow, but what about the exhaust ?

I'd say you haven't even hit the sweet spot yet at 19psi. Turn that sucker up. You'll be surprised how much more there is...

 

[frank_ster]

yea i figured, just the power increase from 15-19 is amazing. I need to get the 300 kpa or 350 kpa map sensor.

 

[forcefed86]

yea i figured, just the power increase from 15-19 is amazing. I need to get the 300 kpa or 350 kpa map sensor.

I’d be curious to see how much boost you can run on a 3.8. The 2.0 guys are pushing 36psi (e85) on the 7 blade hx35’s and seeing 560+whp

 

[frank_ster]

well i have spiked a few times to about 30 psi on the gauge, so it can easily do it, how much its turns into a hairdryer at that point not so sure,
the hx35 seems to be out of the efficiency island on a 3.8. ie not quite enough flow.

but it would be easy to see a 5.9 cummings at 2300 rpm and 2L at 7000 rpm is pretty much the same displacement.
a 3.8 at 5500 is just past, but i have had very good luck with my turbo, it has 600 000 km on it when i got it off the truck, i threw a bearing and seal kit in it and it has brought me to now about 200 000 kms that i put on it.

 

[calais1965]

Hello!

I use holset hx40 super on my build, it worked well. its commonly used performance turbo here in Finland.

Holset HX40 Super
Kompressor 60/86mm
Turbiini 65/76mm
Max RPM 120.000
0,53kg/sec (70 lbs/min )
Max pressure 4,6

exhaust housings 14cm2 , 16cm2 , 18cm2

 

[kad5118]

I have the hc1 and the he1 i just dont know which one should i go with for my blow through carbed 80 motor.