The World of Holset Turbo Charging

[Reno]

whats wrong with the he351cw, larger compressor blade 59mm i believe and a hy35 exhaust so pretty much a hy35/hx40 hybrid :P ive seen one on a ca18.. WOW :P

[kentuckyslider]

Nothing except for 2 things.

1. The 9cm2 housing will not flow near enough air to max out the hy35 compressor much less the HE351. The larger compressor with the small ex housing is good for diesels with slow moving cold exhaust gases trying to make power and pass emissions at the same time. The 9cm2 housing is limited to about 450whp on gas engines at 25psi and it is strapped to a compressor that will make 650whp on the HE351.

2. They have a odd sized almost 4" vband outlet that would take some serious custom work to ever get a downpipe to fit up on a S-chassis.

Bad thing is it would be a nice turbo for gas 4 bangers if you could get an aftermarket ex housing but you can't. They are clamp style housings not bolt up like the HX series so you can't change housings. Basically the HE351 and the HY35 are both limited to about 52lb/min of flow because of the little ex housing. I almost bought one until I talked to a R&D guy I work with from cummins and he said stick with the older HX or H1 series if you want more than 500whp of flow on a gas engine.

model whp range engines I've seen them on... LB/MIN flow

HY35 300-400whp (1.8L VW GTI made 350whp at 21psi) 52

HX35 350-550whp (SR20 360whp at 14psi/4G63 468whp at 28psi) 60(7blade)

HX40 450-650whp (several 500+whp 4g63's at 28+psi) 70

HX52 600-800whp (never seen a dyno but compares to GT4094 or GT42) ?(80+)

[BoostFab]

Nothing except for 2 things. 2. They have a odd sized almost 4" vband outlet that would take some serious custom work to ever get a downpipe to fit up on a S-chassis.

that's a mate for 4" downpipe v-band ,and it's not odd at all. big power dyno queens are running 4" downpipe anyways. with proper fab work a 4" down isnt hard to accomplish. i'm doing a 4" downpipe for my s14 and the hx52

[kentuckyslider]

I am considering staying with the internal gate on my HX35 for cost savings until I get a stand alone and bigger injectors. I should max out my tune with less than 25psi of boost. The stock WG actuator on a 2001 dodge truck is 20-23psi, I'm not sure which one. Do you think I will be ok staying with the stock actuator and internal gate or go ahead and weld it up and go with the 38mm tial?

[Reno]

Since im the King of lazy... any idea how would an hx52 would spool with a twinscroll mani? KA? someone do the math plx, hmmm i havent seen an hx52 map in a while..

[kentuckyslider]

I would think with a little head work and a 8000rpm limit it would be just sick. It should compare to Ramon's S372 in flow and spool so ask Cakefab about spoolup time. He seems to be very knowledgeable. I will be very close to 10's if not in them with the HX35 on my SR, so I would have to think that Ramon's S372 or a HX52 TS KA would be in the 9's with good tires, a 4.60 xterra R&P, and a Z32 transmission!

[Reno]

If you can't throw any more money out there, why don't you try to max out the turbo you have first. Take it in steps. You'll learn more along the way. It's already a fairly large turbo.

One member ran the hx52 with his 2.0L motor. It spooled to 10ish psi by 4800rpms. Divided runner manifold with a t4 flange and stock holset twin scroll turbine housing (17cm^2 I think), if you interested in that route. It does not come with a t6 flange, but a flange close enough to a t4 bolt pattern that you can widen the holes of your t4 manifold to make it clamp down fine.

A twinscroll turbine housing with either turbo mentioned is the way to go for a semi-"street" car. But I wouldn't even try to street a 4cylinder with either.

EDIT: which gt42 are you talking about? As respects to compressors, the gt4202r flows more than the hx52, and nearly the same as the s372. The gt4294r flows less than an hx52 and s372. The hx55 flows more than those, but less than the s376. I don't know where you'd get one, though. I believe there is no gt4292r. . .

Thats a quote from another Forum

so if i do my math correct a ka with a TS mani would spool 10 psi on a hx52 @ 4300 rpm hmmm

[Biggamehit]

nelson8708

Quote »"what happened? Did you sell it before you went over to JDM land?"[/quote]No the car is stored in a garage.

kentuckyslider

Quote »"BIGGAMEHIT, you should really consider the turbine housing in the link above. It has enough flow for 650whp at 32psi on a HX40........."[/quote]Big power is never my goal, a well balanced car is. I made the 204hp @ 8psi @ 5500rpms, I daily drove and raced the car, had to sacrifice some where. Im aware of all of the HX turbos, if you seek big power, they can get you there for sure. I reved to 6500 rpms and I never had issue drifting. My car seen full boost at about 3500rpms on a Log manifold

I have never ever entertained the thought of an SR. As far as my KA-T i will not be touching that for the next 4 years as I live in Japan now.

Razi

Quote »"Biggame, how did you slide your car around with no power steering?Converted it to a real manual rack?Must've been difficult."[/quote]Not at all. once you go about 5mph the wheel feels normal. Besides lol I warm up with about 315lbs in the gym lol... im pretty fit lol. yes i removed the PS lines and plugged the rack.

[Ken Park]

This is a great thread. I'd like to see more people post here who have been trying these Holsets over Garretts. I would consider an HX35 if I go T3 turbine/topmount with my car.

[Biggamehit]

yea i cant wait to come back from Iraq and build my setup, I already have a HKS manifold and a Newer H1C. Ill probably be going with a HX40 though.

[kentuckyslider]

You building a RB25? It will be sick with the HX40.

[Biggamehit]

yeap for my R33 ill be adding the HX40 to it the

[nyc240sx]

iam putting a hx50 on my rb25 with a exotic speed manifold

[WDRacing]

yea i cant wait to come back from Iraq and build my setup, I already have a HKS manifold and a Newer H1C. Ill probably be going with a HX40 though.

Same exact manifold and WG I was running over on Oki...lol. I ran a big TO4 with a .81 AR hotside though. So I was REALLY laggy...and on the RB20.

I hate you for being over there

[Biggamehit]

hahahhha i paid 100 bucks for the manifold and WG

[nelson8708]

hahahhha i paid 100 bucks for the manifold and WG

Ok, now i hate you too

J/K....i'm so jealous . One day i will go over there for vacation and hope to bring back all kinda of jdm goodness

[kentuckyslider]

I've finally got my HX35 running on my built SR. I'm currently runing 18psi and will be on the dyno at 25-30psi on 110 race gas in the next week if my JWT tune will hold it.

Here is a link to my build thread on the SR board....zerothread?id=400168

[GTR PrYdE]

i run a Tiall 38mm

you only want to run a 44mm if you are seeking mega boost.

Misinformation... You want a bigger wastegate to keep boost low and prevent creep.

[nelson8708]

Misinformation... You want a bigger wastegate to keep boost low and prevent creep.

Higher boost pressure means more air coming in the engine and going out. You need the bigger wastegate to help prevent a boost spike or creep from the extra volume of air passing through.

Your statement isn't wrong, just not 100% correct.

[Reno]

i was gonna keep it a secret but i got a he351ve in the works, yes with a KA

[Niclas_AB]

HX52

Sorry, it didn't like the name of the server that the picture where put on Modified by Niclas_AB at 2:27 PM 7/21/2009
Modified by Niclas_AB at 2:28 PM 7/21/2009

[Chris28]

Quick question: I'll be running an HX25 on my t2 setup, what size oil restrictor should I run?

Also, anyone know of a place selling holset turbos? Ebay doesn't have any hx25's listed, only the bigger ones.

[Reno]

there fixed ur pic 4 u

[ST240]

OP:

What method did you use to weld that V-band on the cast turbine outlet?