hx40

[GORBS88]

Well this was a bad day today.
I decided to turn up the boost on my hx40 today and things went wrong. Got the boost to 30psi just where i wanted and got half way thru a gear and boom, turbine wheel pieces out the exhaust and no more boost.

I havent pulled the turbo off yet but it is seized. Now my question is could it have been to much boost for this turbo as i have read on some diesel forums about them not likeing high boost, or was it just some freak thing?

thanx for listening, i just though i would share my bad day.

mike

 

[dsmconvict]

Not too sure but I know someone who runs his hx40 on his dd at 30psi and it likes it just fine.

 

[GORBS88]

Well i couldn't wait till tomorow so i went out in the rain and pulled off the turbo. Have a look, it broke the shaft right off.
So i went onto some diesel forums and then i found out that this is a common problem for these turbos since they have a weak shaft. Now i'm not sure if i'm going to get another one or go to a totally different turbo now.

 

[DirtyBirdRacing]

Hi,

Thats a bum deal man. Why does the blade break off if the shaft is weak. Does it have to do with the shaft bending causing the blades to contact the turbine housing? I would talk to Holset and see if they have done anything to fix the problem, or if any one has made a turbine wheel/shaft that is stronger, dont know how likely that is. If you can not find any product revisions or upgrades I would not go with the HX40 again, because it will just break again I would think.

Bill

 

[ceedawg]

Well i couldn't wait till tomorow so i went out in the rain and pulled off the turbo. Have a look, it broke the shaft right off.
So i went onto some diesel forums and then i found out that this is a common problem for these turbos since they have a weak shaft. Now i'm not sure if i'm going to get another one or go to a totally different turbo now.

Jeez! I guess I'll have to find out for myself but thank God not with the Mitsu hsing.

 

[ceedawg]

Not too sure but I know someone who runs his hx40 on his dd at 30psi and it likes it just fine.

Ditto!

 

[Steve93Talon]

Carl ran his at 33-34psi, still going fine in Nick's car after he sold it. Quite a few people have run up to 40psi on them, I've never seen a failure like that on a DSM with a Holset.

 

[1gDSM4g63]

I believe HX40 max is 40 lbs. of boost.

 

[1gDSM4g63]

Carl ran his at 33-34psi, still going fine in Nick's car after he sold it. Quite a few people have run up to 40psi on them, I've never seen a failure like that on a DSM with a Holset.

How much HP does Carl's car put out running 33-34psi on HX40?

 

[GORBS88]

Hey guys, thanx for all the replys. I'm not sayin that these turbos are junk but it's just kinda weird that once i searched on some diesel forums about hx40 failure there were tonnes of threads. I know they are running more boost then 30 but it IS a fact that the hx40 shaft is weak.
I will find some links and add them here for you guys to read, like i said i'm not trying to bash these turbos it just scares me that there are that many failures out there in the diesel world.
Now should i buy the same turbo again and try again or should i try something different? I'm confused now.

 

[JusMX141]

The one thing that has scared me about the Holset's I've rebuilt are how thin their journal bearings are. It's almost as if they beefed the shaft up to prevent failure, and thinned out the bearings in order to continue to use the same journal size in the housing.

 

[ceedawg]

Hey guys, thanx for all the replys. I'm not sayin that these turbos are junk but it's just kinda weird that once i searched on some diesel forums about hx40 failure there were tonnes of threads. I know they are running more boost then 30 but it IS a fact that the hx40 shaft is weak.
I will find some links and add them here for you guys to read, like i said i'm not trying to bash these turbos it just scares me that there are that many failures out there in the diesel world.
Now should i buy the same turbo again and try again or should i try something different? I'm confused now.

But there are also tons of Volvo,Ford,BMW's and Honda forums where guy's are having great success with the HX40's with most using HX35's. This is the first I've seen a failure like this on one of these as well. The HX35 shaft is also said to be bigger.



By the way,did you break in the turbo properly when you installed it or did you install and give it a nice beating right away?

 

[dsmconvict]

How much HP does Carl's car put out running 33-34psi on HX40?

Dont quote me but the last time I checked 516awhp. He's since moved on to bigger things .

 

[ceedawg]

Dont quote me but the last time I checked 516awhp. He's since moved on to bigger things .

yea! I thought Steve said the guy went with a BW362.

 

[dsmconvict]

I think he went with the s366 not sure on that either....Damn shop is right behind my house too

 

[GORBS88]

But there are also tons of Volvo,Ford,BMW's and Honda forums where guy's are having great success with the HX40's with most using HX35's. This is the first I've seen a failure like this on one of these as well. The HX35 shaft is also said to be bigger.



By the way,did you break in the turbo properly when you installed it or did you install and give it a nice beating right away?

The turbo was used when i bought it, so it was already broken in.!!!!

 

[Steve93Talon]

I think he went with the s366 not sure on that either....Damn shop is right behind my house too

Yep, S366. Probably 600+whp at the same boost level. The S362 you're thinking of is Tort's.

 

[GORBS88]

I have been looking into some borg warner turbos but can't seem to find much about the non extended tip ones. Are these any good? I would be looking to get the s362NET if it is a good turbo as i will be stepping up to the t-3 now.
Now i know the Extended tip ones are better but how would the NET one compare to a holset?? From what i can find they seem to be about the same price but from there i'm not sure. thanx

mike

 

[ceedawg]

The turbo was used when i bought it, so it was already broken in.!!!!

The fact that it was used could be why it broke as well. I tell folks ot to buy turbo's used because it's like sleeping with a chic you don't know without using condoms! You have no idea whose been in her Never buy them used I say. Who knows if the previos owner broke it in right as well.

 

[ceedawg]

I have been looking into some borg warner turbos but can't seem to find much about the non extended tip ones. Are these any good? I would be looking to get the s362NET if it is a good turbo as i will be stepping up to the t-3 now.
Now i know the Extended tip ones are better but how would the NET one compare to a holset?? From what i can find they seem to be about the same price but from there i'm not sure. thanx

mike

The NET turbo's are good but just don't spool up as fast as the ETT versions and are not as efficient as the ETT versions at atmospheric boost levels. They are pretty good none the less.

 

[GORBS88]

The NET turbo's are good but just don't spool up as fast as the ETT versions and are not as efficient as the ETT versions at atmospheric boost levels. They are pretty good none the less.

Sounds good, but how would it compare to the holset turbos?? Arent they all NET as well??

 

[silver bullit]

You ethier had a wastegate, bov, or engine faulure. I would check and test everything.

 

[ceedawg]

Sounds good, but how would it compare to the holset turbos?? Arent they all NET as well??

The ETT is a BW feature not a Holset feature I believe. IMOP they are pretty comparable the 362 NET and the HX40. Steve Talon could give you even more info and the is a thread on that particular turbo.

 

[GORBS88]

Well i have been doing lots of reading and i have come across PDR diesel, they modify the hx-40 and rebalance it before they sell it. They say there is shaft and bearing problems that the take care of. Anyways i have decided to stay with the hx-40 but i will go to the t-3 type rather then bolt on, now my question is how laggy would the hx-40 be in the bullseye t-3 .70 A/R housing?
I still want a easy to drive street car.
Right now i get 20psi by 4k in 4th gear but i am worried that the .70 will be waay laggier. Anyone have any advise or experience with this in a large housing?
thanx
mike

 

[ceedawg]

now my question is how laggy would the hx-40 be in the bullseye t-3 .70 A/R housing?
I still want a easy to drive street car.

mike

Then stay with the .55A/R or go with a full TS setup mani and turbine hsing with a big A/R like me.