Holset turbo's

Redbowties88

Sideways > Straight ;)
Aug 24, 2009
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So why do i never hear of people using them? according to my ricer friends they're pretty cheaply priced. Do they just not come in appropriate sizes? I had a very hard time finding sizing info on the interweb:eek:
 

ripmf666

Active member
Sep 20, 2006
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So why do i never hear of people using them? according to my ricer friends they're pretty cheaply priced. Do they just not come in appropriate sizes? I had a very hard time finding sizing info on the interweb:eek:


There used on more then just ricers. They came on alot of Dodges and they also are ran on alot of over the road trucks and heavy eqt.

What is your goal and what are you looking to buy. Just think twice yes its nice to find something cheap but think of what it will cost to rebuild your motor if what you saved money on lets go.
 

Redbowties88

Sideways > Straight ;)
Aug 24, 2009
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oh i know they come stock on dodges and a lot of big trucks ive just only ever heard of 1 or 2 duramax's running one...

im just curious about why their not used.... i dont have the cashflow for a new turbo just now but thats not stopping me from weighing my options.

who knows maybe ill win the lottery and buy a GTX4292:thumb:
 

ripmf666

Active member
Sep 20, 2006
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oh i know they come stock on dodges and a lot of big trucks ive just only ever heard of 1 or 2 duramax's running one...

im just curious about why their not used.... i dont have the cashflow for a new turbo just now but thats not stopping me from weighing my options.

who knows maybe ill win the lottery and buy a GTX4292:thumb:


I'm a Garrett dealer and just priced my GT4202Rx's out.:D
 

Redbowties88

Sideways > Straight ;)
Aug 24, 2009
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lol well 4202x is a little big for me but luckily the gtx4294 is about 4mm smaller on the compressor side and flows just a tad MORE then the gt4202r:happy2:


sad thing is ide be looking at about 2700just for the turbo:baby::mad:
 

ripmf666

Active member
Sep 20, 2006
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lol well 4202x is a little big for me but luckily the gtx4294 is about 4mm smaller on the compressor side and flows just a tad MORE then the gt4202r:happy2:


sad thing is ide be looking at about 2700just for the turbo:baby::mad:


2700 for the GTX4294 I can do better also the Gt 4202R or just a GT4202
 

Redbowties88

Sideways > Straight ;)
Aug 24, 2009
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well thats why i like the GTX4294 so much, its fairly small so spooling it shouldnt be a problem even with a stock fuel system but the potential is there for when i go to a built motor. and it would be the PERFECT high pressure to use in a big twin setup IMO

it just so damn expensive.:(
 
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Mika

Bastardo Finlandias
Oct 25, 2008
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I used Holset in my last build, also have made several bikes now with HX super40.
I cant say what brand is better, but I know I am 100% happy with Holset, and will use them in my race truck build too.
 

ripmf666

Active member
Sep 20, 2006
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I have read were guys buy HX40 Holsets and run them on old gassers and have good luck with them and buy then cheap as hell.
 

GeneralTJI

Turbo Todd
Jun 1, 2010
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Holset turbos are the shit!

I bought my HE341 (03-04 CR) for $250 in great shape. Built the setup for my car, it made about 450 crank hp at 26-27psi on a 2.0 at 5000ft altitude. When I finish putting my motor together I will source an HE351 (04.5+ CR) and really turn up the boost. They are reliable, sound good, spool fast and are very affordable.

There are less options when you get into the bigger frames though, and they are slightly harder to find it seems. Probably partially why you don't see them on our trucks much.
 

Tyler@MPF

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Oct 28, 2008
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Beech if you want a Holset shoot me a message and I will give you a number of a guy to call. He can spec you out any Holset you want. Alot of big pullers run his stuff.
 

TrentNell

Finally underway !!!!!
Jul 7, 2008
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man its hard to find info on these things, the best i got so far is that an HX52 is 68mm comp wheel and T5.... and thats only from ebay

Let me see what i can dig up I have mostly looked into the larger turbo's ( HX 82 & 85 :D ) , I can get Holsets if you find a number your interested in .
 

TrentNell

Finally underway !!!!!
Jul 7, 2008
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Been hunting around and found some info , don't know how accurate but , more than what you had :D


Turbo---CFM----Racing HP-----Daily HP inducer
HX35----574------420----------330------ 56
TP38 767
HX40----763------560----------440------60
T66-----800-------560----------440-----66
GTP38R 897
B1------900-------630----------495
H2E-----868------700----------550
HX50----1000-----700-----------550-----63,67
HX55----1050------735----------578-----67
HT3B----1085------770----------605-----76
GT42----1302----------------------------75
T76-----1350------945----------743------76
HT60----1400------980----------770
B2,s400-1500------1050---------825-----75
GT47------------------------------------80
HX60----1550------1085---------853
TV81----1600----------------------------85
T88-----1750-------1225--------963-----88
HT4B----1800------1260---------990
Big Brother-1900----1330--------1045-----87
T91------2000------1400--------1100-----91
HC5A/HX82-2450----1715--------1348
T100------2600-----1820--------1430-----100
T105-----2900------2030--------1595------105












HX35:

The 8blade hx35 has a 56mm compressor inducer. This is found on 1995-1998 cummins manual pickups. The compressor flows 52 lb/min according to the compressor map. The bolton BEP housing (0.55 a/r) is enough to push the limit of the compressor. There's several 500whp 8blade hx35 cars out there with the bolt on housing. It reaches 20+psi by 3500rpms in 3rd with 272 cams. Smaller cams would equal a faster spool speed in most cases.

The 7blade hx35 has a 56mm compressor inducer. This is found on the 1999-2002 cummins manual pickups. The compressor flows 60lb/min according to the compressor map and logged results from a member here. The bolton BEP housing with the hx35 turbine wheel do not SEAM to have enough flow to really reach the potential of 60lb/min. But many have logged over 50lb/min so far and seen 500whp. The stock hx35 12cm^2 twinscroll turbine housing is a t3 flange housing. This mated to a NON-divided runner manifold has produced a 132mph trap speed with a full weight 1g AWD. This is about 600whp. So the flow is there with the stock housing if you use a non-divided manifold. The spool speed of the 7blade hx35 is similar to the 8blade hx35 with 20+ psi by 3500rpms in the bolton housing and by 4000rpms with the stock housing with a non-divided manifold.

HY35:

The hy35 has a smaller turbine wheel than the hx35. And, it has a turbine housing connection that does not allow for a bolton housing to be used. It does not have a divided housing so any t3 manifold can be used effectively with this turbo. It has the same compressor as the 7blade hx35. We don't know if te hy35 turbine wheel and housing is enough to reache the 60lb/min potential of the 56mm 7blade compressor. Some one try it out already!!! It should at least be a faster spooling viable option to the full t3/t4 50-trim.

H1C/WH1C:

In 1994, there was the Wh1c which has pretty much the identical compressor as the hx35 but with a Vband compressor cover. The turbine wheel is the same. It will bolt into the BEP bolton hx35 turbine housing. It has 4 bolts at the housing instead of 6. So you will need to buy 2 more bolts and use 6 washers cut to make a flat side. Honestly, I just used bolts that were cut a little short and the bolt head was wide enough to pull the chra to the turbine housing. No sealing issues. Since the Wh1c is for all practical purposes an 8blade hx35 the spool and flow is the same too.

I have the big h1c. It comes on the INTERCOOLED 1991-1993 cummins pickups. It has the webbing for MWE but no groove cut like the hx35/wh1c has. This turbo I term the big h1c because it has a 54mm compressor inducer and same exducer than the 8blade hx35/Wh1c. The other h1c is the small h1c found on the NON-intercooled cummins pickups. This has a 50mm inducer but only 7blades and has no webbing for MWE. Less blades helps flow, but so does a larger inducer diameter. The most whp ever recorded on a gas 4cylinder with the small h1c was done on a KA24 nissan: 411whp. Since the big h1c has a 4mm larger inducer and the same turbine wheel as the hx35, it is safe to say that it flows enough for between 411whp and 500whp. The diesel sources state that it flows SLIGHTLY less than the early hx35. So 4lb/min less than the 8blade hx35 puts the flow of the big h1c at 48-49lb/min right where a 50-trim or 20g is. The small bep housing is all that's needed to get the most from the compressor and the spool speed is 20+psi by 3500rpms.

HX35-40 hybrid:

Keeping the long tradition of the marriage of sportcompact and hybrid turbos, there is the hx35 turbine and the hx40 compressor. It is strongly recommended to use the large bep turbine housing or the stock hx35 turbine housing with an non-divided t3 manifold for this turbo. The small bep housing around a t31 size hx35 turbine wheel is probably not enough to merit any of the hx40 compressor wheel upgrades. 20+ psi by 4000rpms can be seen in the hx35/40 with the hx35 12cm^2 turbine housing with a non-divided t3 manifold. With the large bep housing, spool times are to be determined. But likely similar.

HX40:

The 8blade hx40 has a 58mm inducer and flows about the same as a 60-1 (around 60lb/min) with ALOT better high boost efficiency and spool speed. It is the most common hx40 out there. The small bep housing with the hx40 turbine wheel is plenty to reach the full potential of the 60lb/min 8blade hx40 compressor. 20+ psi by 4100rpms with 272s.

The 7 and 6 blade hx40 is called the super40 and has the 60mm compressor inducer. This compressor flows around 69lb/min. You can get this wheel in billet style (think HTA). The non-billet wheel spools as fast as the 8blade hx40 in the bolton bep housing and has done 653whp at 40psi per the holset results only thread. Billet should spool even faster. The t3 .70 a/r BEP housing slows spool about 400rpms. But reports show a significant gain in flow per psi. So expect more power at lower boost with that turbine housing.

H1E/WH1E:

The Wh1e is like it's little brother the Wh1c. It mirrors the hx40 8blade in every way except that it has a v-band compressor cover and a 4bolt chra-turbinehousing pattern. It will consequently bolt into the hx40 bep bolton turbine housing and this is plenty of flow to max out its 60lb/min compressor.

The h1e is like it's little brother the h1c. There are different size compressors. . . BUT there are also different size turbine wheels too. Check measurements before buying this turbo if you plan on running a BEP turbine housing. There are lower flowing compressors than the 58mm 8blade that are out there. So this turbo may not flow any more than an hx35 if get the wrong one. You need at least a 58mm compressor inducer for this to be a worthwhile turbo vs the proven hx35 or 8blade hx40.

HX52:

This is a big sucker. It is commonly found on the Volvo Semis and usually has a billet compressor wheel. It flows 88lb/min. There is no bolt on housing for it. If you want a bolton housing for this turbo, then you don't want this turbo. In fact if you want a t3 flange turbine housing for this turbo, then you don't want this turbo. You DO want this turbo if you're looking at a gt4294r or gt4202r. The turbine inlet is slightly different than a t4 bolt pattern. You can still get the t4 manifold to work just fine by enlarging the bolt holes.

Misc.:

* Holset's don't spool slow. They spool faster than their garrett or mitsubishi counterparts. Diesel exhaust is cold and slow moving.

* The holset turbine wheel is a work of art. It has been shown to flow very well in a very small turbine housing. For example the hx40 turbine wheel in the small .55 ar bep bolton housing flows as much as a garrett gt35r turbine wheel in a larger .63 ar garrett t3 turbine housing. The hx40 with this configuration spools about 500rpms faster! You can upgrade to the .70 a/r BEP t3 turbine housing and have the same or slightly faster spool speed as the above gt35r with ALOT more flow per psi and consequently more horsepower per psi. This makes for VERY good pumpgas numbers.

* Holset patented map width enhancement. They do not have extended tip technology, but there compressors show more efficiency than their garrett or mitsubishi counterpart.

* They have superback technology witch leads to VERY, VERY durable compressors. The are designed to be overworked and underpaid.

* There are discrepancies all over the web concerning the compressor maps. Take what you hear/read with a grain of salt and a shot of tequila, and the worm.

* The holset is fine with stock 4g63 oil pressure from the oil filter housing. If you have no b shafts, you'll need a restrictor. The drain line is a garret bolt pattern. The feed line is different for different turbos.

There are some pics and compressor maps too :
Holset Turbo Specs. HY, HX, H1C/WH1C, H1E/WH1E - D-series.org
 

Redbowties88

Sideways > Straight ;)
Aug 24, 2009
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ive been lookin for a hv55 for a while now, a mid 70ish vgt turbo that is drive pressure actuated :)

thats pretty BA, but bet that suckers a pretty penny

Beech if you want a Holset shoot me a message and I will give you a number of a guy to call. He can spec you out any Holset you want. Alot of big pullers run his stuff.

Thanks tyler, ide hate to be a tire kicker and call around this early seeing as im still fairly broke. but il remember that down the road when i get some jingle saved up

Let me see what i can dig up I have mostly looked into the larger turbo's ( HX 82 & 85 :D ) , I can get Holsets if you find a number your interested in .

thanks trent, thats good info. i actually found the same thing on my local tuner site yesterday except for the bottom part.... guess its just plain impossible to get legit MAP's and specs of the things without maybe calling holset direct:mad: