80 lb/min turbo discussion

[rlacasse1]

You should have an email.

 

[DSMGraveyardinc]

Large compressor feeds the small one. See this.


From what I can tell, the larger turbo seems to spool the same when compounding as it does when running by itself. So, if I can get something that hits 20 psi by around 5K, then I'll at least be spooling as quickly as my last compound set-up (provided the 10cm housing on the 20g doesn't kill me).

I have a gear drive QM twin disk ready to drop in. Looking forward to 600+ ft/lbs torque.

If you have a way to measure it. i can bring my hx52 that is already modified for a t4 manifold. Give me a call.

 

[99gst_racer]

If you have a way to measure it. i can bring my hx52 that is already modified for a t4 manifold. Give me a call.

Thanks for the offer, Jon. As of last night, I have a couple of HX52s on the way to me. I'll do some measuring when they show up.

 

[DSMGraveyardinc]

Thanks for the offer, Jon. As of last night, I have a couple of HX52s on the way to me. I'll do some measuring when they show up.

Anything to help a local

 

[biglady112]

Here are the measurements off of my HX52. This is as close as I could get tip to tip.

Compressor-
65.45mm/97.87mm
2.577"/3.853"

Turbine Wheel-
83.82mm/69.53mm
3.300"/2.737"

I am going to get you the measurements off of our SX300 91/79 as well. We just had it replaced and is brand new in the box.

 

[NOSLO2PT0]

I did a lot of research on the S366 (79/91) version myself. Seems that most guys were making 750whp from it. A LOT of the Honda guys love this turbo, mainlybecause a few years ago, Geoff at Full-Race was pushing this turbo a LOT. He knows his shit. The 1.8L Honda guys were making upwards of 800whp on the 366, slightly more than the 4G63 platform could. This was mostly due to their better flowing heads. If you are shooting for a specific number, all depends on what that number is. If you want 800+ and want to do it on a budget and don't care about spool, u could always look at the Master Power T70. $600 and 800+whp.

 

[rlacasse1]

Paul, were you able to use the PDF I emailed you?

 

[99gst_racer]

Paul, were you able to use the PDF I emailed you?

Yeah, it's just barely too big to host here. I cut out one of the compressor maps and tried to host it here, but it seems to automatically resize it smaller. As soon as I get home from work, I'll put it up on my photobucket and share it here.

 

[99gst_racer]

Here's a HX5x-6x map. No HX52 on it though.

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[1990AWD]

Its nice to finally know what a HX-60 flows. The farmer I used to work for had a Quadtrac with a Cummins and a HX-60 bolted on the side.

 

[99gst_racer]

I figured I might as well update this thread. I ended up going with the HX52. I had Justin rebuild it as well.

Man, I'd have a turboner for a week if I figured out how to machine a Tial housing to fit an HX52. Seriously, that would be sick.

And although I never would have thought this idea would have become reality, it has. I just received my Tial housing for it. I need to machine a few things, but the GT42 housing is a close fit right out of the box.

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[JusMX141]

That looks really, really sharp Paul.

If it fits in, apparently the 42R turbine is bigger....do you need to weld a little to the radius of the housing and have it machined away?

 

[99gst_racer]

Yeah, the exducer of the HX52 is about 4.9mm smaller than that of the GT42. I'm going to machine a SS sleeve and weld it in. Cutting the radius will be the most difficult part. I also need to machine a sleeve for the inboard end of the turbine housing so that the turbine gaurd (or whatever it's called) has something to seat against. Should be a fun project.

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[Seamus]

This wasn't ona 4cyl, but to give you an idea on the s366 spool chracteristics, I had a 1.05 or 1.10 a/r switzer turbo that was basically identicla to the s362 before Borg warner bought them out and rebranded their turbos. I loved it. Right when the t4 housing gt35r's came out, i replaced the 362 with either a .96 or 1.00(I can't remember exactly). I switched back almost right away. the s362 outperformed it in every metric except transient response. The s362 made full boost almost 800rpm sooner than the gt35r and that was on a car running really low boost (15-17psi), so that is a huge diffrence at those low boost levels. In fact, the s362 was the fastest spooling turbo I had out of

t04s(60-1) BTW, i still think this is a great wheel to this day.
t66
gt35r
s362

I may be forgetting a few. All of the above turbos where with the largest or second largest a/r t4 housing available.

Those were the days boy! nobody outside of monster turbo drag cars or dump trucks had a ported shroud back in the day. Circa 2000 or so, people used ot go crazy when they heard my s362 whistle. Those extended tip s300 series turbos all come form Case tractors. I believe those designs are less than 15 years old, which is hot off the press in the turbo world.

 

[turboglenn]

Paul, for cutting the radius i've come up with a really easy way to do this (i've machined 5 housings for HX40 and 35 turbines now)

Here's the steps i do them in

Cut major blade diameter and depth into housing
Cut minor diameter and depth into that area
The radius the are in between

YOu want to use a boring head for the first two parts

Then you want to make a typical "Surfacing head" for HSS bits (but make it where you can clamp the HSS bit in at a 90* angle or at least close

Then copy the radius of the turbine onto thin cardboard or some other thin flexible material that won't disolve right away when exposed to cutting fluids while you use it as a template.. Gimme a little bit and i'll post a pic of the one i made for doing this

Then get a HSS bit, get on the grinder and start copying the radius from your template on the bit (you make the template fit thye exact inside of the curve on the turbine, then you can trace it's curve onto the bit for roughing it in) Then once you've got the radius correct you can cut your back and front angles onto the HSS bit.

I recomend using a bit larger than the radius and then continueing the radius cut into the HSS bit to make a larger arch than what the turbine has, this is becauyse you'll want to use the bit at several angles when possible to make the curve nice and smooth and of course PERFECT!

I'm not sure what clearances you've got from blade to housing on the HX52 but my h1c and someothers i've played with had tight tolorances on the diesel setups, where as i noticed much moreclearance on gasoline turbos (or ones that were sold for use on gas cars) There was a recomended max of .013 on diesel setups where gas turbos typically are within spec anywhere from .018 to .022" I cut all the ones i do to be at least .018 and try and go no larger than .020 and i just took these from measuring current gas turbos i've used that performed good.. I cut the extra in just for expansion, i've always been told diesel exhaust is much colder than gasoline exhaust so i figure there's going to be more thermal expansion going on within the turbine blades so that's why i cut them a little more "free" just to ensure none hit the housing when i was done


Well, I'm waiting on the site to stopthrowing "database errors" so i can upload it

You might notice the side the cutting edge is on requires me to run this bit in counter clock-wise rotation for cutting.. Something i wasn't thinking of when first grinding the bit or i probably would have ground on the proper sides to not have to worry about it but luckily my machine (mill) runs both directions

 

[airmail96]

Wow paul i can't wait to see how this turns out, please keep us posted.

 

[rr06rs]

I wish Holset had something between a 40 and a 52. Like a large T4 HX48 or something

They do.....

https://www.dwenginecomponents.com/...?ItemProfileId=HOL170-032-0425&ItemClassNo=93

 

[constant_proj21]

Wow, that is really awesome. Whenever I decide to make my moosestang a little faster, I wanted to slap a large frame tial flanged single turbo on it. Nice to know an Hx52 can be made to fit in a tial housing! I can't wait to see the new compound setup

 

[Boosted98gsx]

You know me, i'll always tout the expensive things...

Have you looked into the FP HTA 3794r?
Forced Performance Turbochargers: FP HTA GT3794R Ball Bearing Turbocharger

FP has also [finally] added 42r HTA turbos to their site, but are the not cheap ($3650)

94mm exducer
Forced Performance Turbochargers: FP HTA GT4294R Turbocharger

102mm exducer...
Forced Performance Turbochargers: FP HTA GT4205R Turbocharger

 

[JusMX141]

They do.....

https://www.dwenginecomponents.com/...?ItemProfileId=HOL170-032-0425&ItemClassNo=93

The HX50 is really an oddball. It's turbine housing selection is very, very limited- and there's little to no information out there concerning it's capabilities.

Have you looked into the FP HTA 3794r?

There's no doubt in my mind the FP 3794 is the ultimate T3-frame turbo. Dave would have one on his car right now if the seller would have actually sent it to me instead of me financing him a 1-month loan, so for now we're using the HX40 until another deal pops up or he decides to go much bigger.


For what it's worth, I know about what Paul paid for the turbo...I know exactly what he paid for the rebuild, and I have an idea of what he paid for the v-band TiAL turbine housing. I realize some machining will be involved as well, but it can't be too far out of line. The total cost of this turbo which has the potential to generate 90 lb/min would blow your mind.

 

[rr06rs]

The HX50 is really an oddball. It's turbine housing selection is very, very limited- and there's little to no information out there concerning it's potential

that's what machining is for...

 

[fosforito95]

I figured I might as well update this thread. I ended up going with the HX52. I had Justin rebuild it as well.


And although I never would have thought this idea would have become reality, it has. I just received my Tial housing for it. I need to machine a few things, but the GT42 housing is a close fit right out of the box.

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Is the the 1.02 a/r housing?

 

[99gst_racer]

It's a 1.16 A/R housing. Almost identical A/R to the original Holset housing.

 

[Tiki2777]

good choice going with the holset hx52. I wish someone would try out a GReddy mhi t88 on our cars but . Are you compounding this turbo as well and if soo what is the 52 feeding?

 

[99gst_racer]

Yup, compounding it with a MHI td05 20g in a 10cm T3 housing. Both CHRAs are ready to rock, and I now have my wastegates. So, as soon as I get the sleeves machined for the Tial housing, I'll be ready to get started on the fab work.