Holset Turbos, PART 8

[DraginX]

Did you verify that you boost guage is working? I have seen them stick before.

 

[viperlp01]

So I upped the boost a little and this is my first log. A little knock but I turned the meth off to get a good base tune.

2.3l stroker and my boost est is a little low.

 

[JusMX141]

I switched feeding the turbo from the head to the ofh and still no boost.

If the turbo is blown then the damage is already done....it would be like changing your oil if you spin a rod bearing but not actually changing the rod bearing.

Head feed results vary. Dacowgod ran his HX40 at the head on his 2.4 for around 2k miles and up to 30psi of boost before he got nervous and moved it to the filter housing. Turbo had no play and wasn't making any weird noises, he just was concerned that his boost level was going to exceed the oil pressure at the inlet when he got up to around 40psi of boost. Turbo is now sourced to the filter housing unrestricted and doing just fine.


The bottom line is you must check the pressure at the source and compare it with the manufacturer's recommended spec. There are just as many guys blowing their Holsets by over-oiling them when feeding from the filter housing as there are under-oiling them when fed from the head.

 

[nfernotalon]

If the turbo is blown then the damage is already done....it would be like changing your oil if you spin a rod bearing but not actually changing the rod bearing.

Head feed results vary. Dacowgod ran his HX40 at the head on his 2.4 for around 2k miles and up to 30psi of boost before he got nervous and moved it to the filter housing. Turbo had no play and wasn't making any weird noises, he just was concerned that his boost level was going to exceed the oil pressure at the inlet when he got up to around 40psi of boost. Turbo is now sourced to the filter housing unrestricted and doing just fine.


The bottom line is you must check the pressure at the source and compare it with the manufacturer's recommended spec. There are just as many guys blowing their Holsets by over-oiling them when feeding from the filter housing as there are under-oiling them when fed from the head.

Im gonna have to send it to you again to get rebuilt, hopefully its still salvageable. Most likely it will smoke if its being overoiled correct?

 

[JusMX141]

Not necessarily. If it has enough shaft play that the turbine seal is gone, it can smoke no matter where the oil supply is sourced.

If it has that much play it probably has wheel damage and is most likely not rebuildable. You may want to send me some pictures of the wheels when you get the turbo off the car to verify that the wheels are not damaged.

 

[nfernotalon]

Not necessarily. If it has enough shaft play that the turbine seal is gone, it can smoke no matter where the oil supply is sourced.

If it has that much play it probably has wheel damage and is most likely not rebuildable. You may want to send me some pictures of the wheels when you get the turbo off the car to verify that the wheels are not damaged.

The wheels arent damaged at all they were barely starting to rub again. It doesnt smoke at all either.

 

[doesitonall4rs]

Head feed results vary. Dacowgod ran his HX40 at the head on his 2.4 for around 2k miles and up to 30psi of boost before he got nervous and moved it to the filter housing. Turbo had no play and wasn't making any weird noises, he just was concerned that his boost level was going to exceed the oil pressure at the inlet when he got up to around 40psi of boost. Turbo is now sourced to the filter housing unrestricted and doing just fine.

Been feeding from the head for almost 2 years this coming up November. Been running 30psi for atleast 9 months out of that time, then i started having problems with the meth so the car has been chillin at 18psi. It is my daily driver, I drive it about 20 miles to and from work everyday.

Recently had the intake off to pressure text and still no shaft play!

 

[nfernotalon]

Been feeding from the head for almost 2 years this coming up November. Been running 30psi for atleast 9 months out of that time, then i started having problems with the meth so the car has been chillin at 18psi. It is my daily driver, I drive it about 20 miles to and from work everyday.

Recently had the intake off to pressure text and still no shaft play!

I was hoping I was one of the lucky ones since the rule is if you have balance shafts in you should be ok feeding from the head. Maybe an hour of driving and a couple good pulls and shaft play was noticeable than when I got it back from Justin.

That's a little too extreme isn't it? Not even a day of driving and it was already getting shaftplay.

 

[JusMX141]

If there's not enough oil for any reason, all it takes is one pull and your turbo could be toast.

 

[JWoodley]

I would not feed these turbos from the head and expect a long life from them. I'm pretty sure the 15-25psi available from there is way too little. I ran mine from the OFH with no balance shafts with a -4an feed, a .075 restrictor, and an earls inline filter. I was also running a -10 return and never had an smoking issues. The turbo was just as tight when I took it off the car as it was when I put it on. I could spin the compressor and it would make 3 full revolutions before it began to slow down. It was a 60mm 6 blade compressor with the 12 blade turbine wheel IIRC.

 

[El Cuervo]

What size fitting is everyone using for the oil feed line. This would be the AN fitting that connects the braided oil line to the CHRA oil inlet.
I ordered the oil feed kit from extreme psi. This would be from the OFH. It came with the stainless -4an line, a 90 degree elbow that connects from the OFH to the oil line and a fitting that I believe was supposed to connect the oil line to the CHRA oil inlet. This is the piece that I believe I got the wrong one. It does screw in to the oil line on 1 side but the other side is way too small for the turbos oil inlet.
So does anybody know what size and fitting style do I need? I'll just head over to ace hardware or home depot tomorrow and get it. I don't want to order it and wait another week.
This is whats keeping me from finishing my holset install.

Thanks guys.

 

[JusMX141]

The thread of most Holset oil supply holes would be 12mm x 1.50. It's sort-of an oddball size, and the turbo is designed to have a collared feed fitting with a small o-ring at the top which can cause sealing issues for some.

I tap the threads in the inlet out to 1/4" NPT on every Holset I sell to customers. It's a much better seal because the threads are tapered (the tighter the fitting the better the seal), and 1/4" NPT to -4AN fittings can be found anywhere....even the hardware store.


Do NOT attempt to tap or alter the oil inlet threads in any way while the turbo is still together....you WILL fill the entire cartridge full of metal.

 

[El Cuervo]

Do you know where I can find a 12mm x 1.50 to -4AN fitting?
Or do they even make that size?

 

[turboboy4]

Do you know where I can find a 12mm x 1.50 to -4AN fitting?
Or do they even make that size?

Extreme psi for sure has them

 

[jrohner]

You can get a banjo kit on ebay that has a .060 hole in the bolt as a restrictor. That's what I'm running. If you happen to want/need the restrictor hole bigger, it's easy to drill it out. Just search m10x1.5mm and you'll see it.

 

[El Cuervo]

Thanks guys. Yeah. thats what I might end up doing. I'll try the hardware store tomorrow. If no luck, then I'll just go banjo. so if I do decide to get banjo style, then I'll have to buy another stainless braided line and kit?

 

[dsm-onster]

So I upped the boost a little and this is my first log. A little knock but I turned the meth off to get a good base tune.

2.3l stroker and my boost est is a little low.

What is your boost? Boostest is at about 21psi at 5200rpms.

 

[doesitonall4rs]

Hey guys, I am still addicted to holsets so I just purchased another one, for my galant Vr-4 couldn't pass this deal up. It is a volvo hx40w with a 6blade billet wheel, the thing that was weird tho, is the guy told me it has a 56mm wheel, but as far as I read in the beginning of this thread it says nothing about a 56mm billet 6blade existing? Anybody have anymore info about it? Looks like it has a divided t3 hotside, I will snap a few pics and post them up. It is def a billet wheel and the turbo appears to be in fantastic condition!

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EDIT EDIT

Did some more reading about it and dug up some more information.

to answer your question a little better, the 8-blade will be the fastest spooling hx40. there are some 56mm hx40s that come in 6 blades as well as a 60mm that comes in a 6-blade and 7-blade compressor inducer. if it says volvo on it chances are its a 56mm hx40.

also posted on here.

The 56mm 6blade hx40 isn't what you should be looking at. The flow potential is debatable. It would make sense that it flows about the same as the 8blade. But there's no map around here confirming. I personally believe it flows in the same ball park as the 58mm 8blade. I would really like to get a hold of one and actually run a temp sensor before/after the compressor to generate a real compressor map. Should be something that can be done in under 10 runs. . . But in your case get the proven 8blade it's common, and we KNOW it can flow over 800cfm.

I think some information should be added to the 1st post in every holset thread about the 56mm hx40. Because I originally didn't check anything but this thread for my holset information.

Although I am a little bit upset about getting the 56mm hx40, I am definitely going to run it and hope this thing is as awesome as the hx35 on my talon. Hopefully I can come up with some kind of results to add to the results thread.

 

[talon1979]

Does anyone have any current pricing or availability on a new hx40 in the bolt on housing?

I e-mailed pure-tuning.com and nobody has got back in touch with me. I haven't been able to get a hold of Tim's turbos quite yet, plus on one page it says the price is $1k and on another page it says $1250. Importperformanceparts.net had them listed for $915, but their website doesn't even pull up anymore. I would also like to know if these vendors are selling the 6,7, or 8 blade versions of this turbo.

I've tried searching for hx40's used and new, but Ebay only has the cheap Chinese stuff. I'm also too skeptical to buy one off the net from someone I don't know, especially when there are so many variations but even then I'm not coming across them. I'm very interested in these HX40 turbos, but I can't seem to find any of these miracle deals people are talking about used or new. I thought this was a common, everyday type of turbo, not a rare gvr4 keychain type of find.

I have one last question. Does the hx40 pro spool just as fast as a regular 8-blade? It is a little hard for me to believe that a 60lb/min turbo can spool just as fast as a 69lb/min turbo.

Thank you.

 

[dsm-onster]

turbodaddy.net . . . Stop looking for new, and look for used with good wheels and a rebuild kit. As soon as you bolt it on it's used

Yes all the hx40s spool in about the same range. Within 200rpms of each other, based on my experience and all the logs I've seen (map sensor logs).

Why is this hard to believe? The only difference is the minor diameter of the compressor and one extra blade. The turbine wheel weights FAR more than the compressor. The hotside predominantly determines the spool of the turbo (wheel design/size and housing a/r).



doesitonall4rs. . .Either here or the link forums (I think here), there is a person who has got some great flow out of the 6blade hx40; in the range of the 8blade compressor map actually. Along with a GREAT 70-90 time. Seamed to spool faster than all the other hx40s. It was in the t3 bep housing but spool speed was slightly faster than I've seen other t3 setups accomplish. So I would be happy with it. I cannot remember where the log is though. . . I'll keep looking.

 

[doesitonall4rs]

doesitonall4rs. . .Either here or the link forums (I think here), there is a person who has got some great flow out of the 6blade hx40; in the range of the 8blade compressor map actually. Along with a GREAT 70-90 time. Seamed to spool faster than all the other hx40s. It was in the t3 bep housing but spool speed was slightly faster than I've seen other t3 setups accomplish. So I would be happy with it. I cannot remember where the log is though. . . I'll keep looking.

That is good to hear, I can't wait to run it. I just don't know if I wanna go T3, TD05, or build a twin scroll manifold and bolt to stock T3 on the turbo. I was thinking maybe a lot more people are running the 6blade billet wheel thinking its a pro but its just a 56mm.

 

[Pirrofab]

Hey guys I finally fired my car up last night to make sure it would run after sitting for a year and mocked up my turbo for any fitment issues I would have. I decided not to go with a heat barrier gasket and i did have to dent my water pipe slightly for clearence of the compressor cover and also the compressor outlet was right in the way of the front motor mount. I clocked the compressor cover slightly but then had issues with the stock fan and even with the a/c fan in the location of the normal fan. My car was in several accidents before i purchased it and the front rad support is "tweaked" to say the least which I think is what gave me the issue with the rad fans. I did come up with a solution to my compressor outlet however. You guys may call me crazy but I had the compressor outlet cut off and angled and mated it to a modified 2g throttle body elbow. The turbo now actually looks like it has the outlet of a t-25 except facing towards the driver side. Once the tig work is completed i'll be taking pictures and posting the results. Im within a few short hours of beginning the tuning for this car.

 

[Gooberlog]

^^^ Your accidents aren't to blame for the poor fitment of your stock radiator fans. I had to chop off 1/4 of my shroud that is near the front motor mount and then take about a 1/3 off of each blade of the fan so it would clear the compressor outlet and coupler. I know super ghetto, but i didn't and still don't have the cash for a slim fan yet, and it still cools the car in traffic in 90*f and hotter. Gives the car a more stock appearing look too, but i'll throw in a a slim fan some time.

 

[viperlp01]

What is your boost? Boostest is at about 21psi at 5200rpms.

It was 24 psi.. I turned it down to 21 on the street now. It still rips pretty good.

 

[kicknurass4fun]

hey guys, just got my hx40 setup up going. Im seeing 95psi of oil pressure at 7500rpm. Running mobil 1 10w30, -4 feed off the filter housing-12 oil return. I drilled out a restrictor fitting i had sitting around so i could test oil pressure and not worry about to little oil reaching the turbo, the hole diameter is probably similar to a -3 line. My question is what size would you guys suggest drilling my last restrictor fitting to? Ive driven the car how it is a couple times and the turbos not blowing any smoke at wot, but i would like to be sure the setup is right. Thanks