Rat,

That info would be great. Then we would be able to sit down and compare numbers. I would imagine that we have different setups (ported, boost levels, etc); however, I definitely want to compare.

thanks

Charlie

 

We test some turbos for some of the manufactures and the holsets are usually down on power compared to Garrett, BW, and turbonetics. They also lag a little more then the comparable counterparts. Just take a look at the turbine wheels and you will know why.

 

I run the HX50 with a 1.15 hotside and it is a bit laggy but it pulls like hell

 

I've also had no problems with reliability.

 

What kind of footprint does this turbo use?

And anyone got quarter mile times with their setup?

 

Reliability is not the problem, its just simply the performance aspect.

JZ

 

Mine uses T4 foot print, as I'm using a XS engineering cast manifold. CJ

BTW, I'll get the pics tonight.

 

mine is the same as far as the t4 footprint

 

Sorry, I forgot again. I'll just give you pics of the old setup. What I've done since this picture is put on a Greedy elbo, change the end tank on my IC, and make the IC piping straight where it is bent in this picture. I've also just finished installing the 3.5" DP/MP. I've also installed a Groundzero LIM.

I just need to change the oil, reinstall a groundstrap to the MP, and put anouther bead of weld around the IC piping. (From turbo to IC) Then wait for it to stop raining, and have Ralph tune it.

CJ

https://www.rx7club.com/forum/attach...chmentid=97904

 

I have seen these go bad with a small return line, you have to use a -12 line for this turbo or else it will burn out.

 

Okay, here is what G--Rat did:

Apparently, the H1E comes with a 26mm turbine housing, and this equates to a 1.34 or so hotside. He managed to source a 22mm housing from a place called High Tech performance in Utah. This 22mm equates to a 1.05 or so hotside. So I was wrong, instead of going bigger, he went smaller. This alone would probably assist in spool. In addition, he runs a fully divided manifold.

Hope this helps!

Rat

 

the hx35 was used on many cummins engines in many configurations, the ex. housing is sized in cm2 not in a/r. comparing the two is very difficult to do accurately so sizing through the process of elimination is the best way to go. there are divided t3 and divided t4 housings available with external or integral wastegates, they are also available with oil only or oil and water chra's. holset's are expensive because they are reliable. oil drain's are the most important thing along with an oil restrictor on the oil feed side. diesels run lower oil pressure but more volume and almost always use a restricted oil feed line. gas engine's like rotaries run at all different pressures due to rpm range so a restrictor is extremely important for longevity of the holsets. the reason some may see "laggy" performance is that the rotating assembly is much heavier than most t4's so it takes more energy to get it spinning, and since it is heavier balance becomes more of an issue, so if a shaft is out of balance then bearing life is drastically shortened. thrust collars and bearings are super heavy duty so that shouldn't be a problem as long as reasonable boost range and oil feed and drain works properly. that's pretty much all i can remember off the top of my head but ask me any other questions if you have them and i'll try and get the boss to fill me in.

and i work for a turbo reman and performance shop so this isn't coming from some uneducated ******* on the internet.

Gabe

 

Here are a couple pictures I snapped tonight. I need to do a couple little things still, like wrap the heater hose with a heat blanket or something, install the tranny pan, re-attach a ground on the exhaust, etc. Nothing major, just a hour or so worth of work. Just need to find the time to do it.

CJ

 

YUP! any turbo will do somthing for air flow, but getting it fine tuned for your combination, that gets enteresting, alwaysboostin just about right on it, nuthin worst than a 4th gear pull on the street, than LAG . now if I can just get into second gear and boost too. i might catch up. whew! the race is over, damn!

 

OH! its not H1E, it is HLE

 

We use 10 ans 12 an lines, and like I said the reliability is not a problem. They use oversize thrusts and typically larger shafts then garrett equivalents. Only problem is the wheel pitch and blade contour is outdated. Part of the reason why I say performance aspect is what is lacking. We replace our 35's on our CT diesels almost immediately if we plan to make any power and get the turbo to lite off. Their are turbos out there that are priced around the same and perform much better.

 

G-Rat has an H1E, do a search for H1E on the internet.