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Holset HX35 vs HX40klkl

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I"ll be getting an HX35 for my car once i'm past getting the motor swapped out. I based my decision on posts from dsm-onster and other threads to which he pointed me.. GAve me great advice and put me in touch with people who sell said turbo with the exhaust housing i want on it (different housing than what you want) And as long as i don't sell it to get a new DD car once i move I will post some dyno sheets by june/july 2009.

HOnestly, i am not trying to discourage you, seem superior in knowledge or anythign else. I have just seen the same thing way too many times, especially by younger people where they buy a turbo that looks like just the ticket for maching on every car around and having more ponies than anyone in your group of friends only to have a car that's barely drivable and turns out to be more frustrating than fun to drive in some situations. Neither of these turbos really fit the "not fun to drive" category, so the point is kinda moot, but still applies in the general laws of physiscs and airflow.

Keep the upgrade process posted and updated once you get started.
 
I'll say it again, post your question in the Holset thread, part 5. That is where the poeple running them or putting their systems together are posting/discussing.

Ill post it there too, but with 10 + viewing this right now and all the views this has had, after the total post with the orginal question being about the o2' I should have an answer.

People should try and be on topic.
 
I still have 0 information about what o2 housings are best for the BEP bolt on mitsu hotside for the HX40 and HX35.

It's a bolt on housing:confused: Take your pick of any variation of o2 housing (stock, Punishment, Megan, ebay, etc) and it will be fine. And I believe the outlet of the BEP housing is 2.75".
 
1gDSM4g63. . . . . . The first reply said:
The BEP .55 a/r bolt-on is a standard Mitsubishi housing and the BEP T3 .70 a/r has a v-band but if go with the BEP bolt-on the o2 housing needs to be bore down to match the BEP housing.


You're correct about the spool rate for the HX35 and HX40. And a bigger turbo would produce more power at the same psi than a smaller turbo but there is lag.

;)

I THINK an evo3 o2 housing has the right diameter inlet. . . Or at least closer. The 2g or 1g o2 housing gets mighty thin there st the flange when you open it up to match the bep outlet.
 
I"ll be getting an HX35 for my car once i'm past getting the motor swapped out. I based my decision on posts from dsm-onster and other threads to which he pointed me.. GAve me great advice and put me in touch with people who sell said turbo with the exhaust housing i want on it (different housing than what you want) And as long as i don't sell it to get a new DD car once i move I will post some dyno sheets by june/july 2009.

HOnestly, i am not trying to discourage you, seem superior in knowledge or anythign else. I have just seen the same thing way too many times, especially by younger people where they buy a turbo that looks like just the ticket for maching on every car around and having more ponies than anyone in your group of friends only to have a car that's barely drivable and turns out to be more frustrating than fun to drive in some situations. Neither of these turbos really fit the "not fun to drive" category, so the point is kinda moot, but still applies in the general laws of physiscs and airflow.

Keep the upgrade process posted and updated once you get started.

And I agree 100% to this post.
Im not looking for the biggest turbo to hit 1000whp, I could get a HX80 or somethign stupid.

Im trying to find a turbo that spools fast (this is where the holset comes in) and will net more power at a lower boost level.

I.e Right now I have a Stock HG and Stock Head studs.

So 22+ psi, is pushing it for me.

If I get this psi level on the HX40 and it makes 350 whp thats cool
350whp might take 27+ psi on the HX35.

So Im saving myself in some area's while preping myself for more in the end by doing this.
 
There are rules on this forum, search first, if you dont find your answer post.

I did that.

There are other rules, with no usefull information. Do not post.
No "Use the Search" replies.

So stop breaking the rules.

If this site wants to set things up better.

I.e 1. When a search is done, it does more then link you to the 1st page of a 21+ page thread with more then 1thousand posts.

That is not helpfull, you cannot seroiusly expect someone to read 4+ threads of 20 pages coming up to 4 thousand post to get a simple question answered that to my knoweldge is not ther.

2. Stop merging / split up information into sections. Because THREAD 2 THREAD 3 dosn't give me any information into whats going to be in that thread rather then a bunch of peoples opionions.


You do know that you can search within a thread right? Just click on one of the holset thread's and search for whatever you want, and see what you come up with. Then you won't have to read 4 thousand posts.:|
 
;)

I THINK an evo3 o2 housing has the right diameter inlet. . . Or at least closer. The 2g or 1g o2 housing gets mighty thin there st the flange when you open it up to match the bep outlet.

You quoted someone saying something about boreing down your o2 to match the BEP hotside...

If this is my best case, Im selling my fp manifold and getting the Vband t3 BEP hotside, cause that is way to 1/2 assed for me when buying a complete new setup.

Im looking for external wastegate off the o2, so the stock stuff is out.

Im looking for a company or type of o2 that can be made recric 44mm wastage that will match up, no companys have anything like this?

Maybe the Mitsu bolt on BEP housing is a big fail? But people have made 650+whp on it? what did they do hmm..
 
You quoted someone saying something about boreing down your o2 to match the BEP hotside...

If this is my best case, Im selling my fp manifold and getting the Vband t3 BEP hotside, cause that is way to 1/2 assed for me when buying a complete new setup.

Im looking for external wastegate off the o2, so the stock stuff is out.

Im looking for a company or type of o2 that can be made recric 44mm wastage that will match up, no companys have anything like this?

Maybe the Mitsu bolt on BEP housing is a big fail? But people have made 650+whp on it? what did they do hmm..

If you know anyone that's a welder/metal worker/fab guy etc.. You can just build a custom O2 housing or modify the parts you have to make them what you want. If you lived anywhere near me i'd say swing over and we'll make it work... but that would be quite a drive from where you are now :p
 
You quoted someone saying something about boreing down your o2 to match the BEP hotside...

If this is my best case, Im selling my fp manifold and getting the Vband t3 BEP hotside, cause that is way to 1/2 assed for me when buying a complete new setup.

Im looking for external wastegate off the o2, so the stock stuff is out.

Im looking for a company or type of o2 that can be made recric 44mm wastage that will match up, no companys have anything like this?

Maybe the Mitsu bolt on BEP housing is a big fail? But people have made 650+whp on it? what did they do hmm..

You'll run into even more trouble it you go the the T3 with the v-band hotside. You'll have to find a pro fabricator who will make your downpipe or a custom made v-band to Mitsubishi o2 housing.

The easy way to go the BEP bolt-on and simply do port work. With your originally intentions, going to a T3 is the wrong way to go.
 
My friend had a .73 T3 turbo, hes got this guy that made a custom 3"vband from the turbo to the mufler.

Was really nice and hes local so I might have to goto him.

I cant belive that BEP makes a hotside with an o2 setup where no one has any o2's that will work w/o custom building or hogging out the stock stuff to the point were it will break just to match up the two holes..

Intersted, I wanna know what the Mitsu BEP bolt on hotside 650+whp HX40 people are using.
 
Go find out! FYI, NO ONE with a 500whp turbo uses a stock turbine housing and can be expected to make big numbers. They arn't looking at what a turbo needs. This is all common sense or can be found through searching. I'm not telling you to search. I'm telling you that Curt Brown doesn't use a stock turbine housing with even his evo3 16g car. BEP doesn't build their housing for use of the stock o2 housing. It's an option for guys who ask many answered questions.. If you want a bolton solution you have to pay. You should look at an FP turbo. But they have no housing with a small enough out let for a stock housing either. Port or upgrade. I also mentioned using the evo3 o2 housing. You're asking basic questions. So you need to do basic study. This is your best modification now. You know where to go. Don't underestimate the power of this site. You can learn 99% of what you need to know even for your particular build and not even be a member.

BTW, 22psi with a bigger turbo puts ALOT more stress on the headgasket than 22psi from a smaller turbo. MEP (mean effective pressure) and knock kill head gaskets, not boost. Boost is just a relative definition of pressure differential. 500whp from a big turbo at 22psi will be just as hard on your HG as 500whp at 30 psi from a smaller turbo. Like I said let's go back to studying. These questions have already been answered. And you will find them easily. And along the way, you will probably pick up little bits of information like the above that will help you.
 
I cant belive that BEP makes a hotside with an o2 setup where no one has any o2's that will work w/o custom building or hogging out the stock stuff to the point were it will break just to match up the two holes..

Intersted, I wanna know what the Mitsu BEP bolt on hotside 650+whp HX40 people are using.

I don't know where you going with all this. Going T3 completely objectified the intentions you state above of having a low spool and low boost turbo. Bigger the A/R the more lag and it is made for more boost and high RPM spooling.

You've heard several of us say that if you go with a BEP bolt-on you've got to do some port work or evo o2 housing and that's the beginning of it. There are other important factors like the block, head, fuel system, etc... to have the car handle 650+hp.

Just like dsm-onter, you cannot easy jump from minor to major upgrades. There is a lot of learning so unless you're getting your car fully built and tuned at a performance like AMS you need to learn from the basics. And having 500+hp IS NOT meant to be a DD car. You may not realize this now but you will know if you mod to that extent. Driving a finely tuned car day in and day out is like putting you car's live on the line.

You should really figure out the steps by looking at the TECH - upgrade path section and upgrade step by step not just jump from barely modify to a race built block with a big turbo. It's better to go that way instead of chopping off your arms and legs money wise damaging a car you don't know how to handle. I may have an extensively modify car but I'm still learning.
 
I don't know where you going with all this. Going T3 completely objectified the intentions you state above of having a low spool and low boost turbo. Bigger the A/R the more lag and it is made for more boost and high RPM spooling.

You've heard several of us say that if you go with a BEP bolt-on you've got to do some port work or evo o2 housing and that's the beginning of it. There are other important factors like the block, head, fuel system, etc... to have the car handle 650+hp.

Just like dsm-onter, you cannot easy jump from minor to major upgrades. There is a lot of learning so unless you're getting your car fully built and tuned at a performance like AMS you need to learn from the basics. And having 500+hp IS NOT meant to be a DD car. You may not realize this now but you will know if you mod to that extent. Driving a finely tuned car day in and day out is like putting you car's live on the line.

You should really figure out the steps by looking at the TECH - upgrade path section and upgrade step by step not just jump from barely modify to a race built block with a big turbo. It's better to go that way instead of chopping off your arms and legs money wise damaging a car you don't know how to handle. I may have an extensively modify car but I'm still learning.

I know the tech path,
I have 90% of the stuff from the tech path.


My car is anot a DD car.
It gets 50 miles per month, I just cant find the money or the balls to gut and strip my 12k 99 GSX.

I cannot use an evo 3 o2 as I need a wastegate on the o2.

I know about spoll on turbos.


I have said this alot of times.
Still not getting though I guess.
 
Go find out! FYI, NO ONE with a 500whp turbo uses a stock turbine housing and can be expected to make big numbers. They arn't looking at what a turbo needs. This is all common sense or can be found through searching. I'm not telling you to search. I'm telling you that Curt Brown doesn't use a stock turbine housing with even his evo3 16g car. BEP doesn't build their housing for use of the stock o2 housing. It's an option for guys who ask many answered questions.. If you want a bolton solution you have to pay. You should look at an FP turbo. But they have no housing with a small enough out let for a stock housing either. Port or upgrade. I also mentioned using the evo3 o2 housing. You're asking basic questions. So you need to do basic study. This is your best modification now. You know where to go. Don't underestimate the power of this site. You can learn 99% of what you need to know even for your particular build and not even be a member.

BTW, 22psi with a bigger turbo puts ALOT more stress on the headgasket than 22psi from a smaller turbo. MEP (mean effective pressure) and knock kill head gaskets, not boost. Boost is just a relative definition of pressure differential. 500whp from a big turbo at 22psi will be just as hard on your HG as 500whp at 30 psi from a smaller turbo. Like I said let's go back to studying. These questions have already been answered. And you will find them easily. And along the way, you will probably pick up little bits of information like the above that will help you.


There have been people who made 500+whp with the mitsu bolt on BEP housing,
That is the housing in question.

I dont konw where you are getting stock housings.

And I have stock Head studs so If I had to boost +10 more psi They will have a higher c hance to strech and then resuilt in a blow in my head gasket.

So that is why 40 > 35 right now.
 
There have been people who made 500+whp with the mitsu bolt on BEP housing,
That is the housing in question.

I dont konw where you are getting stock housings.

And I have stock Head studs so If I had to boost +10 more psi They will have a higher c hance to strech and then resuilt in a blow in my head gasket.

So that is why 40 > 35 right now.

Bullseye-Power makes the bolt-on housing. Either e-mail the BEP sales team for reference as to where you can purchase it or go to The Turbo Trader - BEP Do-It Yourself Holset Kit. Or buy the BEP Holset turbo that already has the Holset core with the BEP housing handed right there to you.
 
I know who makes them I put it in my post.
I know where to buy them.

I never asked for any of that information.

I think you just want post count and are randomly posting ....


There have been people who made 500+whp with the mitsu bolt on BEP housing,
That is the housing in question.

I dont konw where you are getting stock housings.

And I have stock Head studs so If I had to boost +10 more psi They will have a higher c hance to strech and then resuilt in a blow in my head gasket.

So that is why 40 > 35 right now.

I'm answer that question!

I'm trying to help you out but if you don't want answers to the questions you ask then I don't know what's the whole point of this forum you started. It should be place under the hangout section if you find it totally meaningless and if wanted answers you should have done some searching. You'll clearly find all info you want under the Holset forum but somehow I seem to think you're just lazy and wanted all info handed to you on a platter.
 
I know who makes them I put it in my post.
I know where to buy them.

I never asked for any of that information.

I think you just want post count and are randomly posting ....


Seems you know everything but how to find your own answers:rolleyes:


The worst part about the man that knows everything is he can't learn anything

That I agree. You give answers to the question HE asked on the forum HE started and when you give him a straight forward answer he just seems to question it and makes up redundant answers HE supposedly already knows and bases his facts on to objectify your answer.

Plain and simple, if you don't trust us, the people who are running the Holset turbo or have ran them, then this is getting no where on either ends. Perhaps you can do the searching through the thousand posts about the Holset turbo yourself or LOOK at the first posting of the Holset Turbo, PART 5.
 
DSM onster posted and said that no one running 500whp on a stock turbine housing, it was in the quote above my post.

I said "I dont know where you are getting the stock housing at"

No looking for a store to buy them, but replying to monster and telling him that Im not talking about stock housings,

Im talking about the aftermarket BEP bolt on housing.

I know where to buy this housing.


And The questions I asked where answered and i stoped on them.

I.e
Low boost on 40 = higher poost on 35.

and

What o2 housings fit that use a wastegate = complete custom no one makes one that fits and lines up.


So then I started talking about swtiching to the t3 hotside so I can use a vband as it would not so 1/2 assed as hoging out a evo3 o2 housing or something.


And people starting yelling saying that its not a good turbo to DD with and that it spools later.

I dont DD my GSX and I dont care as long as the spool is <4500.

I race the car I will never be pre 4500 rpms.


If you would have read 1/2 the post I covered all that.


So stop replying with information I have never asked.

Like were to buy the damm hotside.
WOW
 
I meant stock o2 housing not stock turbine housing I apologize for typing the wrong word. . .

I said that you won't have to hog out an evo3 o2 housing. . . I just had a chance to measure my outlet on my BEP bolton housing. It is 2 5/8". Porting the evo3 o2 housing to this diameter is not half a$$.

Yes there are companies that have a turbular o2 housing that bolts on to an stock outlet bolt pattern. Yes they are large enough in diameter, maybe a little porting. Yes they have flanges for an external gat off the o2 housign. I can't remeber these vendors. And I'm not about to go through the list of supporting vendors just for this. . .

. . .Pleas get your rear off your back. I made an honest mistake with typing a word, but you still didn't need to ask these questions to get an answer. Many run an o2 housing mounted wastegate for their 20g, fp, pte, or other turbo with the same outlet as a BEP. This HAS been answered. And I should have never encouraged this thread getting any bigger by replying. Most of us were only viewing this thread because it was on top. . . Not because we wanted to answer Holset FAQs like power at lowboost and high boost, o2 housings used, outlet diameter on the bep bolton housing, whetheror not there's a vband outlet, etc. You can search IN A THREAD itself. Also, you can search and get plenty of info on the bolton housing outside of the holset threads, since the housing is used on pretty much every dsm turbo ever built except for fp and garrett gt turbos. It's easy to find an answer about the outlet diameter of the bep bolton housing and the outlet options. What else do you need? how much more power at 22psi will an hx40 make over an hx35? We've already posted up the holsets results thread. It's only one page. . .

And yes, those prepared to build a 500whp car don't ask silly o2 housing questions.
 
I meant stock o2 housing not stock turbine housing I apologize for typing the wrong word. . .

I said that you won't have to hog out an evo3 o2 housing. . . I just had a chance to measure my outlet on my BEP bolton housing. It is 2 5/8". Porting the evo3 o2 housing to this diameter is not half a$$.

Yes there are companies that have a turbular o2 housing that bolts on to an stock outlet bolt pattern. Yes they are large enough in diameter, maybe a little porting. Yes they have flanges for an external gat off the o2 housign. I can't remeber these vendors. And I'm not about to go through the list of supporting vendors just for this. . .

. . .Pleas get your rear off your back. I made an honest mistake with typing a word, but you still didn't need to ask these questions to get an answer. Many run an o2 housing mounted wastegate for their 20g, fp, pte, or other turbo with the same outlet as a BEP. This HAS been answered. And I should have never encouraged this thread getting any bigger by replying. Most of us were only viewing this thread because it was on top. . . Not because we wanted to answer Holset FAQs like power at lowboost and high boost, o2 housings used, outlet diameter on the bep bolton housing, whetheror not there's a vband outlet, etc. You can search IN A THREAD itself. Also, you can search and get plenty of info on the bolton housing outside of the holset threads, since the housing is used on pretty much every dsm turbo ever built except for fp and garrett gt turbos. It's easy to find an answer about the outlet diameter of the bep bolton housing and the outlet options. What else do you need? how much more power at 22psi will an hx40 make over an hx35? We've already posted up the holsets results thread. It's only one page. . .

And yes, those prepared to build a 500whp car don't ask silly o2 housing questions.

I had no agression to you, You have allways posted with helpfull answers.
I posted for the other two that just come in to say search and talk bs.

And If someone post a thread with a question, and you feel that the question is allready answered, dont post.

Simple, but when you post and dont answer the direct question, and then get feedback saying thats no use to me, well Im sorry what did you expect.

And thank you for the mesurement of your BEP outlet on the hotside.!

Thats what I really needed.

BEP Mitsu hotside for the Holset turbo's outlet mesures 2 5/8".

Many companys (Punishment) Make 38, 40 and even 44mm recric wastegates in 2 1/2 diamiater.

I will just port the opening for a smooth transition.


I wanted to make sure that it wasnt a 3"+ outlet and then put on a 2 1/2 " o2 housing thus causing a horrid flow.

And I did search about the question I had, Again sorry If I missed the 1 or 2 post in the 4000 that may have had my answer.

I guess Im a pretty horrid person.

Also, Im not prepaired to build a 500whp car, Im looking at maxing out my stock block in power, Thus why the 400whp questions.

But once I get the balls and money to build my block I can turn up th boost,
And my car has everything needed for 400whp that I can think of besides of exhaust flow (Mani turbo o2 exhaust) and cams.

So I am in the 400whp area.....



I mean no hard feelings to anyone, Im not a newb, but Im not a guru either, I searched but didn't find the information I needed.

I asked a simple but detail orinated question and got a bunch of responses that didnt meet my requirements.

Now that I know the differances are only 1/8th of an inch then your right, porting the o2 is not 1/2 assed. I aggree

I thought it was going to be close to 6/8ths + differance beacuse these holset turbos are HUGE.

I know FP sells a ture 3" o2 housing, and If that didnt work and was never brought up I was ready to be dumbfonded.
 
So Im going to be picking up the Holset HX 35 or 40 turbo, I currently have a FP exhaust manifold ready for it.

Im not sure of what o2 I need tho, Does the BEP bolt on mitsu housing come with the Mitsu 3 bolt o2 side? Are there any Vband o2 sides?

And what o2 should I use? is the o2 outlet 2.5" 3"?

Im going to need to wastegate off the O2 and it will be a recirc back into the o2.

Also one last question,

Is the 40 going to make more power on the same PSI that the 35 would?

Im never going to go into the 35+ range so I want to get the most power with the lower PSI ammount, and the spool on a 2.0 was around 3400 - 3600 on the 35 and 4000 4100 on the 40?

People with these turbos chim in!
Thanks


This is my 1st post.

I had two questions.

1. What o2's work for the Holset turbos with the Mitsu bolt on BEP housings.

I.e 3 bolt? 5 bolt? and are there any Vband types? and what was the size of the outlet. 2.5" 3"?

2. Can I make the same power at a lesser PSI with the bigger turbo then the small one.


The 2nd question was answered quickly and I left it at that until someone started saying that the 40 would be a bad DD turbo cause of lag and would loose vs the 35 at the same WHP level, in witch I put in my two sense on how my car is not a DD and if you are Above the rpms of max spool it should be 100% even, and with the quick spooling of the holsets I personally never see less then 4000rpms when racing.

The 1st question got partionally answered in the 1st page but I never got the full answer tell post 48, where monster said he measured his at 2 5/8ths inch.

This now tells me that I can use a 2.5" o2 housing that many vendors make tublar for the external wastegate off the o2, and just port 1/16th on each side to make a 2 5/8ths inch mating area.


And the 1st post in holset part 5 Had zero of both of thoes questions answered.

And If the information was so abundtly out there, How come you and the others guys took 50+ post to provide what Monster did.

Monster has been in 90% of all the Holset threads and had to go and measure his own turbo to get the number, shouldn't he have seen this and have some sort of information.

So Im sorry again for missing the information that even all of you couldn't call up, and instead posted a whole bunch of unrelated information.

Again Im not bashing anyone but get off my ass, if you yourself cannot find the info, and if you can post it or just dont post anything at all.

Im glad I have my answers now.

FP Mani -> Holset 40HX w/ the .55ar Mitsu Bolton BEP hotside with a 3bolt 2.5" recirculated 38+ Wastegate that has be slightly ported.


Thanks all have a good day.

By the way the stock block can handle 500whp so 400 is not maxing it out but I think that 400 is a safe power level.

Thus so do I, I am not the one to push it to the abosulte max, but a Safe max. so 400 was a goal were the car could be a safe level of constant power that will not send rod's out my block the 2nd time I get into full boost.

I agree with you here.
 
3" external gate O2 housing
Make your own dump tube, V-band clamp it back into your DP before the elbow.
Port the housing and be done..

Is that what your looking for, with out going full custom?

This is a step in the right direction,

But monstor pointed out that the outlet on the hotside is 2 5/8" inch.

So 3" is over kill.

And I wanted a wastegate recuirlated, cause I cant stand hearing that dump tube everytime I get in boost, personal prefrance,

But thanks at your aid.
 
Pleas get your rear off your back. I made an honest mistake with typing a word, but you still didn't need to ask these questions to get an answer. Many run an o2 housing mounted wastegate for their 20g, fp, pte, or other turbo with the same outlet as a BEP. This HAS been answered. And I should have never encouraged this thread getting any bigger by replying. Most of us were only viewing this thread because it was on top. . . Not because we wanted to answer Holset FAQs like power at lowboost and high boost, o2 housings used, outlet diameter on the bep bolton housing, whetheror not there's a vband outlet, etc. You can search IN A THREAD itself. Also, you can search and get plenty of info on the bolton housing outside of the holset threads, since the housing is used on pretty much every dsm turbo ever built except for fp and garrett gt turbos. It's easy to find an answer about the outlet diameter of the bep bolton housing and the outlet options. What else do you need? how much more power at 22psi will an hx40 make over an hx35? We've already posted up the holsets results thread. It's only one page


+1000 on searching within in thread itself, I never knew about that.
Not really a forum guru either. That will be very helpfull.
Im sure there are many other things that I do not know on this forum, like smily text inserts etc..

Thanks for that information.

Sorry for not knowing the BEP housing that is used on the Holset is also used on, what did you say every other turbo out there besides the fp or garrett, I didn't know it was some universal housing, that wasnt made special for the holset turbos. (Altho on the BEP website the housing is labeled directly Holset HX35 Mitsu / T3 thus making me think it could be special to the Holset turbo and having a differnt mesurement due to a possible bigger turbine on the holset turbo's)


And I only had two questions from the start, And now they are both answered we are good.

Thanks much sir!
 
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