Holset HX60 over HX40...
 

So... i went to the local Cummins Dealer and they decided that they would give me a BRAND NEW HX60 and a BRAND NEW HX40 to put together a compound setup...

I will post the assy & application numbers later tonight...

Will i need to wastegate the HX40 to lower drive pressures ?

I will also be using the Marine HG, and 370 Marine injectors they gave me...

Will the spray pattern be incorrect if i use the Marine HG?

Hope you guys like this...

Spray will still be wrong. Use the thinnest copper washers you can get. Something like .010"

What housings on the chargers?

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how thick do they have to be with the stock HG?

i will post up numbers a little later today, i told the technical advisor/sales representitive about my idea and their engineer/mechanic pulled these two turbos out and said they'd be perfect, but he was unsure if i had to put a WG on my exhaust manifold to drop drive pressures...

best part is... i got them for FREE !!

Just had to put a ad from their dealership on my truck..

Only way to make them be the correct pattern would be marine bowl pistons. Staying with the thinner gasket and thin washers will only help but not fix the issue. They will still run just fine but they wont be as good as a set of 5x12s in the correct pattern.

See if they will give you pistons too.

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Here's a video of my pump being bench tuned, not sure if 100% extra fuel will f*ck something up, but we maxed it out... :)

Not 100% sure but i thought the hx 60 was a reverse rotation charger and not as desirable for higher hp applications?

Your thinking of a HT60 they are reverse.
Maxed pump will be fine. Will have to fine tune the afc to get it dialed in for sure tho.

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That's what i was thinking too, what pressure should the foot be full forward, and should i cut some off the foot ?

Will i not need oversize fuel lines with the pump maxed out ? or will that only cause lobe ? should i not worry about fuel temperatures..

Both turbos are non-wastegated applications from Marine Cummins Diesels... The HX60 comes off the M11, and HX40 comes off a 6CT Marine 8.3..

They don't actually come off anything since they are new turbos, with the 4k GSK, marine injectors and maxed out pump ? i should have no problem spooling this ?

Anyone want to make a wild guess of what my boost will be ? EGTs shouldn't be crazy and i should be able to tow ?

I'm just asking since this is my first try at fabricating a Compound system...

I have mine at 40psi full forward which required a stiffer afc spring. To get full foot travel you will have to trim some off of the back so that it dosnt bottom out against the housing.

As far as fuel lines if you mean injection lines then no. You only need larger lines when the injectors get larger then the lines so for stock lines that would be. 072" if you mean fuel supply line you will want 1/2" line at 40psi feeding it because it will require more supply fuel.

Do you know what housings are on the turbos? That will have a huge effect on the spool and over all boost.

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With the right housings that should be a real nice setup. Total boost will be 50-70psi depending on housing sizes. Should be a good towing set capable of supporting 600hp while towing and keep egts in check.

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i was hoping i would be closer to ~80-85psi...

but 70psi should make it go...

you want to make a wild horsepower guess ?

85psi could be made but the drive pressure at that point would negate any peak power gains.

The marine injectors are going to hold it back on ya. Egt will be higher then it would be with the correct nozzles. But 500 hp should be easy enough.

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Yeah, but my limiting factor at this point will be the injectors and clutch, wich is fine because i don't have the fundings for a new clutch atm...

But with studs and a marine head gasket i should be safe for all that boost?

When should i be worried about having to ring the head ?

Keep it under 80 psi drive pressure without rings

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guess i'm going shopping for new gauges :P

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Would you recommend a set of four or should i run these 33x14,5 at the rear ?

http://spjall.kvartmila.is/index.php...ch=81305;image

Anyone want to put down a bet on 1/4mile times?

the 370's can get you pretty far, if your dead set on them raise the pop press and keep your timing in check.

I'm setting timing to 20°, how much should i raise the pop ?

I'm not dead set on them but i get them for free so i'll just see where they take me...

That will be a great setup with proper fuel can make 700 hp, which hx60 is it? I believe there is a 74mm and an 80mm wheel for them

i pick up the turbos on monday, i will tell you the numbers off from them...

Sounds good bud! they flow over 120lbs a min if i remember right so it will be plenty

I think it's a good setup, because i was going to do a HX52 over a HX35, but the HX35 has such a small exhaust housing that it would make crazy drive pressures...

I'm thinking that since both HX40 and HX60 are non-WG and have big exhaust housings this will clean up much better and still have the EGTs in order since i have the 4k GSK...

I'll just start off in 1st gear if i have to tow heavy and keep them breathing... no low boost smoke hauling with something heavy...

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How much should i raise the pop? they're set at 260bar... should i go 20bar up?

id go 280 to 290

what difference will it make to raise the POP?

i'm trying to keep EGTs in check aswell....

HX60 has 32cm^2 exhaust housing...

That should work fine. What about the 40?

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18 or 16cm^2, both are non-WG

I think this will work fine... and drive pressures should be minimal...

I would go with the 16 then maybe an external gate later

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I have both exhaust housings, so i can choose what to use...

I think that 18cm^2 won't be too laggy with 4k GSKs...

ah then you can see which one yalike better the 16 would spool a couple hundred rpm sooner

ok, just bolted my head down with "Special Marine Bolts" from a local Cummins dealer, 8 steps... 150lb.ft... hope they hold up :)

Got a part number for those?

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They're not official Cummins merchandise, they are in-shop made...

I've asked around and all the sailors who are using them are very happy...

One has a 80psi 5.9 with no problems...

Ok that makes sense. I figured if cummins had something like that i would have known about it...lol

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Probably, i guess they compare to Tonys' bolts..

But well, i decided i would go with a wastegated exhaust housing on the HX40, not sure what size it is but i think this is a better idea just to keep the stock drive-ability more stock like...

I decided to pull my stuff all apart and this is how it looks like:
http://myndasafn.bmwkraftur.is/d/102212-2/100+096.jpg

http://myndasafn.bmwkraftur.is/d/102217-2/100+102.jpg

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oh, and here's my motor, waiting to get it's stuff bolted on...

http://myndasafn.bmwkraftur.is/d/102210-2/100+073.jpg

And my truck waiting to have the 360 gasser pulled and cummins installed:
http://myndasafn.bmwkraftur.is/d/102205-2/100+075.jpg

Guess i should post this picture here;
http://myndasafn.bmwkraftur.is/d/102...0102012358.jpg

The exhaust housing on the HX40W is 19cm2 and the HX60 is 32cm2..

Shouldn't i be able to make over 70psi ?

I know i won't with the marine injectors, but after i get a new clutch i will get a better set of injectors...

Hope i get some comments ;)

Nice job! Makes me want to build compounds now... :dang:

I do wonder what the spool will be like with 19 and 32 cm2 housings though... :humm:

Sorry, it was a misprint, it was supposed to say 17cm2 ;)

I don't think it will be too slow spoolup, my HX35 had a 16cm2 exhaust housing and did fine :)

1st gear would spool @ 2200rpm
2nd gear would spool @ 2000rpm
3rd gear would spool @ 1750rpm
4th gear would spool @ 1600rpm
5th gear would spool @ 1500rpm

i guess that with my 4k GSK and bigger injectors... i will have no problems spooling that 17cm2 HX40... and i'm not worried about that HX60 at all since i'm running it in a compound configuration...

I pulled my turbos off to refabricate the drain pipes on it and the cold pipe... you can see the old cold pipe on this picture...

Update:
https://fbcdn-sphotos-b-a.akamaihd.n...59034140_o.jpg

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New cold pipe wasn't matching like i wanted... so old and ugly cold pipe went back on...

three more pics to show you guys how stupid it looks :argh:

http://www.bimmerboost.com/attachmen...0&d=1355271152

http://www.bimmerboost.com/attachmen...1&d=1355271161

http://www.bimmerboost.com/attachmen...2&d=1355271168

I'm betting I could scrounge up some of my recipes and get you the Donaldson P/N's of the parts I used. I used a 3" to 4" adapter, 2 short radius 90's, and one long radius 90.

I will post up pics of the new cold pipe once it's ready...

I just had too narrow pipes, i will get the correct pipes tomorrow i guess...