Holset Turbos, PART 4

[dsm-onster]

I think there is more to the HTA wheels than it just being made of billet. The better entry cover alone would make a significant positive difference in flow and spool. There's plenty of proof that a properly radiused bellmouth entry to a turbo does greatly affect topend power and spool speed. It's harder for a turbo to suck than blow. And inlet turbulance can destroy the helix where you need alot of order at high flows to get the most out of the compressor blades.

But, I think the wheels are not quite the same as the non-billet wheels in particular areas other than manufacturing process. For example since billet is stronger and weighs less than a cast wheel. Then you can stand to litterally shave off more material on the billet wheel down to the point that it has the same strength of the cast wheel, but now you're looking at ALOT of weight difference. Not just the billet process that makes the wheel lighter but the fact that you can use less material to keep it just as strong as the non-billet wheel.

 

[asd_gst]

I think there is more to the HTA wheels than it just being made of billet. The better entry cover alone would make a significant positive difference in flow and spool. There's plenty of proof that a properly radiused bellmouth entry to a turbo does greatly affect topend power and spool speed. It's harder for a turbo to suck than blow. And inlet turbulance can destroy the helix where you need alot of order at high flows to get the most out of the compressor blades.

But, I think the wheels are not quite the same as the non-billet wheels in particular areas other than manufacturing process. For example since billet is stronger and weighs less than a cast wheel. Then you can stand to litterally shave off more material on the billet wheel down to the point that it has the same strength of the cast wheel, but now you're looking at ALOT of weight difference. Not just the billet process that makes the wheel lighter but the fact that you can use less material to keep it just as strong as the non-billet wheel.

ok so since the billet wheel weighs less and uses less to make it shouldnt it spool fast?

 

[dsm-onster]

Yea, like I said about 2-300rpms. IF! the only difference is billet. I was saying you shouldn't break your back to get a billet wheel.

 

[DoyoFCT]

Yea but I like the idea of a 6-blade billet wheel , so far the cheapest ive found the billet wheel option is 300 bucks on top of the brand new price of an hx40, anyone know of a cheaper source?

 

[Slippi84]

Hey,

I'm running the bullseye T3 .70 A/R housing. Could still make some more power if i were to run a STOCK holset housing.

Just noticed your missing two studs nuts on your manifold???

 

[JWoodley]

Yea but I like the idea of a 6-blade billet wheel , so far the cheapest ive found the billet wheel option is 300 bucks on top of the brand new price of an hx40, anyone know of a cheaper source?

Post up a link to where you found it.

 

[projecTSI]

Figured I would throw this up here since everyone is looking for billet wheels:

eBay Motors: HOLSET HX40W WITH 60MM BILLET COMP. WHEEL (item 220301472086 end time Oct-31-08 08:06:26 PDT)

 

[Slippi84]

Figured I would throw this up here since everyone is looking for billet wheels:

eBay Motors: HOLSET HX40W WITH 60MM BILLET COMP. WHEEL (item 220301472086 end time Oct-31-08 08:06:26 PDT)

The auction will have like 300 bids by 5pm

 

[1gDSM4g63]

Do you know why I can purchase billet or pro 7 blade compressor alone? BEP only offers 6 blade compresses.

Figured I would throw this up here since everyone is looking for billet wheels:

eBay Motors: HOLSET HX40W WITH 60MM BILLET COMP. WHEEL (item 220301472086 end time Oct-31-08 08:06:26 PDT)

I've always been wanting a divided housing plus the billet since there's so much say about the spool compared to the T3 or BEP housing. You're looking at a bidder if it's within a reasonable budget. Thanks.

 

[D_Eclipse9916]

So...after reading good lord of eveything this is what I found, please correct me if I am wrong.

An HX35 will spool just as fast as a evo16g but be able to put down 400+awhp. This is based offf a bep bolt on housing for a mitsu manifold.

Would the most ideal setup for spool be a divided t3 manifold to the stock hx35 exhaust housing? Can you get a billet wheel for the hx35?

I know you guys hate this but I am looking for a bolt-on bep housing for the hx35. I have tried a few places but its proving difficult. So if anyone has one personally or can get one, please pm me. I do know the places I can find the actual turbo.

Question also....Has anyone tried to fit an hx35 with an fp race manifold..are the flanges thick enough to space them out enough for the compressor housing to clear the water pipe?

Wish I could afford it, but a divided t3 manifold with a billet wheeled hx35 sounds like it would spool ####ing amazing. Too bad the only divided t3 manifold somebody has put up is the 995 dollar one.

 

[chrisb33]

So...after reading good lord of eveything this is what I found, please correct me if I am wrong.

An HX35 will spool just as fast as a evo16g but be able to put down 400+awhp. This is based offf a bep bolt on housing for a mitsu manifold.

Would the most ideal setup for spool be a divided t3 manifold to the stock hx35 exhaust housing? Can you get a billet wheel for the hx35?

I know you guys hate this but I am looking for a bolt-on bep housing for the hx35. I have tried a few places but its proving difficult. So if anyone has one personally or can get one, please pm me. I do know the places I can find the actual turbo.

Question also....Has anyone tried to fit an hx35 with an fp race manifold..are the flanges thick enough to space them out enough for the compressor housing to clear the water pipe?

Wish I could afford it, but a divided t3 manifold with a billet wheeled hx35 sounds like it would spool ####ing amazing. Too bad the only divided t3 manifold somebody has put up is the 995 dollar one.

basically you got them right. how many blades on the compressor side is your hx35?

bolt on BEP housing you can get direct from BEP. Email dave directly - [email protected].

like matt said, i think the billet wheels are overrated. I do believe that the hx35 with bolton housing + fp manifold will only give you positive results. If i had the money id buy an fp race manifold too to mate with my hx35. maybe the wifey will give it to me as a christmas gift

chris b

 

[projecTSI]

I've always been wanting a divided housing plus the billet since there's so much say about the spool compared to the T3 or BEP housing. You're looking at a bidder if it's within a reasonable budget. Thanks.

No problem, glad I could help. I figured there would be at least 1 person that would want it .

 

[D_Eclipse9916]

basically you got them right. how many blades on the compressor side is your hx35?

bolt on BEP housing you can get direct from BEP. Email dave directly - [email protected].

like matt said, i think the billet wheels are overrated. I do believe that the hx35 with bolton housing + fp manifold will only give you positive results. If i had the money id buy an fp race manifold too to mate with my hx35. maybe the wifey will give it to me as a christmas gift

chris b

Thanks. I sent him an email, I am thinking a 7-blade because those spool the fastest? Also if the billet wheel gives me even 1-200 rpm faster spool its worth it,

Oh and the fp race manifold is worth every penny!

 

[chrisb33]

Thanks. I sent him an email, I am thinking a 7-blade because those spool the fastest? Also if the billet wheel gives me even 1-200 rpm faster spool its worth it,

Oh and the fp race manifold is worth every penny!

you'd be good with the 7 blade as matt says that the 7 blade spools as fast as e16g but flows nearly as much as an fp red!

tell dave at bullseye that i sent you.

and yeah, the fp race manifold is on my "wish list"

chris b

 

[Slippi84]

JHR manifolds are even better and they're divided too

 

[GST95]

I just got my new hx40 and im a little confused on the compressor wheel. It has the markings on the exducer end of the wheel like the billet ones, but has a cast looking finish to it. The other hx40 wheel that i have is cast and looks smoother and more "finished" i guess. Both are 7 blade. From the pics i see of the billet wheels they look to have a smooth finish on the blades. Can somebody verify that?

Here is a pic of the new one i got

You must be logged in to view this image or video.

Should i be concerned about this rough finish?

 

[kicker91laser]

That is what my 7 blade holset looks like as well.

 

[TimG]

Someone should start a Holset RESULTS thread. None of this parts number non-sense and billet wheel talk. These Holset threads are cluttered with 'what ifs' and 'I wants'.

 

[GST95]

Someone should start a Holset RESULTS thread. None of this parts number non-sense and billet wheel talk. These Holset threads are cluttered with 'what ifs' and 'I wants'.

Update: Ive got my holset internal wastegate holding a consistent 16-17psi on my wh1c. I added the stock 45* elbow. That was the only thing i changed since it was creeping to 30psi previously. I find it hard to believe that would change it that much, so i may have developed an exhaust leak pre turbo. Ill look for leaks before i remove it to install the hx40.

I post results as i go, but im still in trial and error mode

 

[GORBS88]

Someone should start a Holset RESULTS thread. None of this parts number non-sense and billet wheel talk. These Holset threads are cluttered with 'what ifs' and 'I wants'.

NO DOUBT!!!!!!! Totally understand what your saying there are 357 BILLION pages of talk and WE are the only ones with track times.

HEHE

 

[GST95]

Its the end of the season around here. Most of the tracks are closing for the year. Time slips are gunna have to wait till spring for me. Its winter project time for most of us. There are alot of jonny come lately types like myself that are just now looking at holsets as a viable option, despite being a billion post long thread. At least i read through all of the posts instead of asking questions that have been answered previously. Yeah, there are some people asking questions that will never end up putting a holset on their car, but just telling somebody you ran whatever time at the track wont make that number decrease. Some of us, like myself, are currently running a holset, but still have questions. Only a couple of guys are actually being helpful on this thread.

If track times are the only results you are looking for there is already a place on here for that. DSM 1/4 Mile Times

 

[TimG]

I think I forgot to mention that I'm running pump gas. 94 octane + meth. Apparently that's pretty good.

 

[We're on Boost]

I just got my new hx40 and im a little confused on the compressor wheel. It has the markings on the exducer end of the wheel like the billet ones, but has a cast looking finish to it. The other hx40 wheel that i have is cast and looks smoother and more "finished" i guess. Both are 7 blade. From the pics i see of the billet wheels they look to have a smooth finish on the blades. Can somebody verify that?

Here is a pic of the new one i got
Should i be concerned about this rough finish?

That is very interesting, and a very good pic. Does it have those tool marks on the blades too, or just on the wheel face?
Anyway, since the tool paths are all parallel to the airflow direction I don't think they will hurt anything flow-wise.

 

[GST95]

That is very interesting, and a very good pic. Does it have those tool marks on the blades too, or just on the wheel face?
Anyway, since the tool paths are all parallel to the airflow direction I don't think they will hurt anything flow-wise.

Ill have to look at it again when i get home this weekend. I cant remember for sure. I dont believe it had tool marks on the blades, but they had a rough cast looking texture. I sent an email to holset about it, but i doubt ill get a solid answer from them.

 

[biglady112]

Hey now. I posted all sorts of results. I hope the colt running with mine just after the new year. Money is a little tighter with the new job, but things are going well there.

But at least the one I bought originally has been put to good use.

Steven