Holset HX-35 Oiling

[TSITurbo95]

Where exactly do you suggest and what all is needed?

The port right below where you have it tapped now. And you'll need a reducer fitting (forgot the size off hand).

 

[Dsm2Nv]

Im seing about 23 psi at 1000rpm idle and about 47 psi at 5000rpm 2 step does this sound about right to you guys ? Just got her running about 5 minutes ago.

 

[ed1380]

47psi sounds a bit low especially at 5k. Idle oil pressure is good.

 

[Dsm2Nv]

Just checked again today and it was 24 at idle and 42 at 4500 rpm. Does that sound about right or do i have to change something?

 

[Archer Fabrications]

http://www.dsmtuners.com/forums/turbo-system-tech/443321-holset-hx40-installation.html

my gift to everyone!

 

[98gstbrad]

So I didn't see this in here, but with balance shafts and squirters could I run my oil feed line off the head with no restrictor?

 

[1glaserfwd]

Most advise against it, as you may only be getting 30psi of pressure at 7500 rpm. Some have done it but not advisable!

 

[ed1380]

Don't do it. When my bottom end is at 100psi (diesel oil and no balance shafts) I have just 32psi at the head. At idle there's 5psi at the head. Definitely not enough.

 

[Boostdriven]

I didn't read all the posts on this thread but I read a few so if I'm repeating what someone already said I apologies. I want to share some information from my experience as well as some of my friend's that ran and still run HX35/HX40 turbos.

Just before I switch to HX52 I had a HX40 on my car for about 6 or so years but because I was experimenting with other turbos I put between 10k-15k on that HX40. It's whole life its been fed from an OFH with an original #6 holset fitting in the chra and a #6 steel braided fuel line. My oil pressure fully warmed up at idle is about 25 psi and at 2500 rpms is about 50 psi, by red line its about 80-100 psi.

A little while ago when I still ran the HX40 I ended up buying a 62mm compressor wheel as an upgrade so in the process of changing the wheel I thought I might as well take the whole thing apart and look everything over. At this time turbo had about 10k-12k miles on it. When I took it apart, the shaft looked perfect, no excessive heat marks, the piston ring on the exhaust side didn't look all sludged up and a little bit of starting fluid cleaned up whatever was there. The heat shield on the inside didn't have any burned oil on it. I put that thing together and it ran perfect to about few days ago when I took it off to replace it with HX52. Turbo ran 26-35 psi of boost. Stock oil return line.

My friend Tristen (dsmcurse) has his HX40 for about the same period of time, fed with the same #6 line from an OFH with relatively same oil pressure. Turbo runs 30-35 psi of boost. Stock oil return line.

My friend Justin has a HX35 on his daily driver that he drives to school and work. He bought that HX35 used from a junk yard with about 100k miles on it. I have not rebuilt it for him yet but its been on his car for about 9 months now. It's fed with the same #6 line I have on my car. No smoking, no issues. Turbo runs 26 psi of boost. Stock oil return line.

Now let me tell you about a friend who wasn't so fortunate with his HX40. He bought this thing brand new and decided to use a #4 line and feed it from the head. Turns out it wasn't such a good idea. After about 600-800 miles the turbo started to smoke. So I took it apart it and right away I could see the cause of failure. The shaft was blue and the exhaust bearing was black. When I asked him what his egts were at cruise or wot he said between 1000-1100 at cruise and about 1400-1500 after going through few gears so nothing out of ordinary. The only thing that wasn't ordinary was oil supply. Turbo ran only 20 psi. Stock oil return line.

I have another friend who has a 98 dodge ram 5.9l cummins. That truck has about 230k miles on it with an original HX35. I asked him what his oil pressure was, he said at idle its about 50 psi and at 3200rpms its about 90-100 and that's fully warmed up. That turbo is fed straight from the block with a #6 line.

My next door neighbor has the same truck with 250k miles on it with an original HX35, same oil pressure, same oil feed line.

The list goes on and on but I think you get the point.

Holset turbos are not your topical POS garrett or Mitsubishi that in most cases is cooled by water. Every bit of cooling on the holset turbo is done by oil. I'm almost sure that if you were to take the water lines of a 14b or a 16g and feed it from the head like stock, that turbo is not going to last very long.

Some of you may say, diesel engines don't put out 120 psi of oil pressure like some of our DSMs, well I'll say that diesel engines don't put out as high of egts as some of our DSMs.

I've been around holset turbos for number of years and I've seen them fail for several different reason. Under feeding it with oil was #1. I've seen them fail because of really hot egts where the rear bearing gets so hot that it loses it integrity and starts to wear out causing excessive shaft play and shortly after the turbo starts to smoke.

I'm not trying to start an argument here, I'm just sharing some information from experience. So if you want to run a BEP .55 bolt on housing on you HX40 or HX35 running 30+ psi of boost with exhaust pressures damn near double and egts through the roof, plus on top of that put a restrictor in it, well be my guest. It's money out of your pocket not my.

Fortunately those holsets are not that expensive

 

[ed1380]

I didn't read all the posts on this thread but I read a few so if I'm repeating what someone already said I apologies. I want to share some information from my experience as well as some of my friend's that ran and still run HX35/HX40 turbos.

Just before I switch to HX52 I had a HX40 on my car for about 6 or so years but because I was experimenting with other turbos I put between 10k-15k on that HX40. It's whole life its been fed from an OFH with an original #6 holset fitting in the chra and a #6 steel braided fuel line. My oil pressure fully warmed up at idle is about 25 psi and at 2500 rpms is about 50 psi, by red line its about 80-100 psi.

A little while ago when I still ran the HX40 I ended up buying a 62mm compressor wheel as an upgrade so in the process of changing the wheel I thought I might as well take the whole thing apart and look everything over. At this time turbo had about 10k-12k miles on it. When I took it apart, the shaft looked perfect, no excessive heat marks, the piston ring on the exhaust side didn't look all sludged up and a little bit of starting fluid cleaned up whatever was there. The heat shield on the inside didn't have any burned oil on it. I put that thing together and it ran perfect to about few days ago when I took it off to replace it with HX52. Turbo ran 26-35 psi of boost. Stock oil return line.

My friend Tristen (dsmcurse) has his HX40 for about the same period of time, fed with the same #6 line from an OFH with relatively same oil pressure. Turbo runs 30-35 psi of boost. Stock oil return line.

My friend Justin has a HX35 on his daily driver that he drives to school and work. He bought that HX35 used from a junk yard with about 100k miles on it. I have not rebuilt it for him yet but its been on his car for about 9 months now. It's fed with the same #6 line I have on my car. No smoking, no issues. Turbo runs 26 psi of boost. Stock oil return line.

Now let me tell you about a friend who wasn't so fortunate with his HX40. He bought this thing brand new and decided to use a #4 line and feed it from the head. Turns out it wasn't such a good idea. After about 600-800 miles the turbo started to smoke. So I took it apart it and right away I could see the cause of failure. The shaft was blue and the exhaust bearing was black. When I asked him what his egts were at cruise or wot he said between 1000-1100 at cruise and about 1400-1500 after going through few gears so nothing out of ordinary. The only thing that wasn't ordinary was oil supply. Turbo ran only 20 psi. Stock oil return line.

I have another friend who has a 98 dodge ram 5.9l cummins. That truck has about 230k miles on it with an original HX35. I asked him what his oil pressure was, he said at idle its about 50 psi and at 3200rpms its about 90-100 and that's fully warmed up. That turbo is fed straight from the block with a #6 line.

My next door neighbor has the same truck with 250k miles on it with an original HX35, same oil pressure, same oil feed line.

The list goes on and on but I think you get the point.

Holset turbos are not your topical POS garrett or Mitsubishi that in most cases is cooled by water. Every bit of cooling on the holset turbo is done by oil. I'm almost sure that if you were to take the water lines of a 14b or a 16g and feed it from the head like stock, that turbo is not going to last very long.

Some of you may say, diesel engines don't put out 120 psi of oil pressure like some of our DSMs, well I'll say that diesel engines don't put out as high of egts as some of our DSMs.

I've been around holset turbos for number of years and I've seen them fail for several different reason. Under feeding it with oil was #1. I've seen them fail because of really hot egts where the rear bearing gets so hot that it loses it integrity and starts to wear out causing excessive shaft play and shortly after the turbo starts to smoke.

I'm not trying to start an argument here, I'm just sharing some information from experience. So if you want to run a BEP .55 bolt on housing on you HX40 or HX35 running 30+ psi of boost with exhaust pressures damn near double and egts through the roof, plus on top of that put a restrictor in it, well be my guest. It's money out of your pocket not my.

Fortunately those holsets are not that expensive

4 miles of hard driving

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[gixrman]

My only question or addition to this is what oil are those desiel trucks running and what is the max oil temp? My understanding is this my be a huge contributing fracture to some of the DSM Holset failures. I run full synthetic with a large Setrab oil cooler for this reason and even got so obsessed with the turbo inlet pressure that I ran a separate oil pressure line/ gauge just so I know what's it is after the restrictor at all times.

 

[Boostdriven]

My friend with a dodge uses delo 15w-40. In my eclipse I use valvoline syntactic 10w-30, still change it at 3000 miles, used it for years. I run valvoline regular 10w-30 in all my other cars.

 

[TimF]

can some one tell me if this has a restricter or not. And what size adapter do I need to connect my hose end to my OFH. also is it recommended to get a oil pressure gauge just to monitor my turbo feed?

 

[Cdc1221]

Would it be fine to feed my hy35 from the head? I have no balance shafts, and its a n/t block, so no squirters. I appreciate anyinsight

 

[JusMX141]

Does your head source provide a minimum of 35psi and a maximum of 72psi under full load at operating temp? If so, then by all means...

 

[Cdc1221]

Wouldn't know. Fresh engine that's never been started. I read the the first few pages of your holset oil drain thread, and read where a few people were feeding theirs from the head. I've already got what I need for the drain, but trying to work out what to do for the feed. Would you think summit would carry the necessary fittings, hoses, and restrictor to run from the of?

 

[DSMsOwnYourV8]

Would it be fine to feed my hy35 from the head? I have no balance shafts, and its a n/t block, so no squirters. I appreciate anyinsight

As Justin already pointed out, you can feed it from wherever you want as long as you are within spec, as listed by Justin and in the Holset FAQ.

You need to have a gauge at the turbo - at least temporarily - to monitor the oil pressure to see if it's okay to feed from the head or anywhere else that you feed the turbo from.

If you feed from the OFH you'll likely need a -3an line unrestricted, or a 4an line with a .075-.095. restrictor. I just went through this on my holset setup and ended up going with a FP black inline filter that I drilled out from a .035 to a .092 restrictor and put in an oil pressure gauge post-restrictor so I could see what my oil pressure is at my turbo.

 

[Cdc1221]

That actually shouldn't be an issue. I'm just trying to be sure I get everything right the first time .

 

[c2ypt1c]

Here's what I used:
Turbo Oil Feed Line Restrictor and Oil Feed Line Filter 4 | eBay

Made my own 4an feed line (summit fittings and hose) with an in-line prosport oil psi sender and drilled this restrictor out until my psi was in spec. Fed from the filter housing.

 

[okm12346]

hey guys, hows it going?

I have a question regarding hx35 oiling




Im running 2.4L N/T block with no BS or Oil squirters and I have the oil relieve valve ported. I just installed the oil pressure gauge and im getting these numbers at the OFH

idle 1k - 20 psi
2k - 40 psi
3k - 60 psi
4k - 70 psi
4.5k-5k - 75psi

I couldnt push it more, I was in traffic. What I get from this is that the oil pressure is twice as higher as it should be.

im running .065'' restrictor, 4an feed line, 10w40 oil and 12 drain.

I have done the oil port mod to the head, if that matters at all.

I do not have the means ATM to hook the gauge right before the turbo to measure the oil pressure.


Do you think I am ok with the pressure to the turbo? Its only running stock boost level of 12psi

Im running a brand new spring in the OFH. Do you think the high oil pressure would prevent the main/rod bearings of getting proper lubrication? Its a brand new engine, things are not seated properly yet. It has less than 200 miles on it.

In case I decide to cut the spring in the OFH, how many coils should i remove? 1/2 to 1 maybe?


Thanks in advance

 

[ed1380]

I would not run it from the head. At 5k I have 100+psi at the bottom end and 32 at the head. That's not enough for the holset

 

[Archer Fabrications]

hey guys, hows it going?

I have a question regarding hx35 oiling




Im running 2.4L N/T block with no BS or Oil squirters and I have the oil relieve valve ported. I just installed the oil pressure gauge and im getting these numbers at the OFH

idle 1k - 20 psi
2k - 40 psi
3k - 60 psi
4k - 70 psi
4.5k-5k - 75psi

I couldnt push it more, I was in traffic. What I get from this is that the oil pressure is twice as higher as it should be.

im running .065'' restrictor, 4an feed line, 10w40 oil and 12 drain.

I have done the oil port mod to the head, if that matters at all.

I do not have the means ATM to hook the gauge right before the turbo to measure the oil pressure.


Do you think I am ok with the pressure to the turbo? Its only running stock boost level of 12psi

Im running a brand new spring in the OFH. Do you think the high oil pressure would prevent the main/rod bearings of getting proper lubrication? Its a brand new engine, things are not seated properly yet. It has less than 200 miles on it.

In case I decide to cut the spring in the OFH, how many coils should i remove? 1/2 to 1 maybe?


Thanks in advance

Try removing your restrictor, your drain is big enough. Your numebers are close to mine. At the ofh.