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I don't have any more info then these pictures, there is a part / serial on one of the pictures , my motor is 565cid,Dart 325's 10.25:1 Cr ,looking for 6-7lbs on the street more on race gas on the strip, not looking for world domination, low 9's, streetable and I'm happy :






 

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Discussion Starter #2
Impossible to tell or no one gives a shit ? :D
 

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workin it
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I wish I could help, but I can't:rolleyes: sorry...:)
 

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i can tell you the smokes will kill you

not sure about the turbo

call supernatural or something like that , i did and grate help

you can get there info on here some where
 

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those turbo's put out 40+ pounds on a big diesel. on a small gas burner the lag would be horrible. if you want a cheap turbo get one for a 5.9 cummins from a salvage yard.
 

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Cowboy up
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I'm pretty sure his 565 will be able to handle the spooling of that turbo. Compression seems kind of high on that though.
 

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First off, it's Cummins, not Cummings....

I have one reference that says it's a T46 that was on the NT855 Cummins. If so that is a very aged design.

Let me see if I can find anything on flow rates for you.
 

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Discussion Starter #11
First off, it's Cummins, not Cummings....

I have one reference that says it's a T46 that was on the NT855 Cummins. If so that is a very aged design.

Let me see if I can find anything on flow rates for you.
Thank you, sorry for the misspell :D
 

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it always makes me laugh when people correct spelling on a post,,, who cares we are gear heads not eangelish teecheers...
 

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It's an ht46 or 52. I can't tell. It's a reverse rotation unit. Problem you are going to have is this, holsets are high pressure ratio turbos. Anything under 20 pounds of boost and it's not going to be happy. At all. I have an HT60 on my N14 cummins and it makes 35-40 psi of manifold pressure daily. Honestly, your motor makes more horsepower naturally aspirated than that turbo can support.

64 merc, if you don't know what you are talking about, it would be best not to offer advice to people. The HX35 that comes stock on 5.9 cummins engines barely moves enough air to support 500 horsepower. They make a good turbo for a 2.3 liter 4 cylinder, not a 565 inch big block. HELL two of them would even be too small!!

If you want to go the junkyard route you need to be looking at Garrett units. Their wheel designs work at much lower pressure ratios than holsets. A TV8101 would be a decent starter unit on your motor to figure out what's going on. Any of the TV8xxx will work well. The TV91 units will work very well too. I had a TV91 for a while with the 7 blade compressor wheel and that unit moved enough air to support 1500 horsepower.

If you have the money to buy a dedicated aftermarket piece, you aught to be looking at something 91mm or bigger on the compressor inducer. That many cubic inches is going to need a g trim wheel and a 1.32 or 1.50 turbine housing. I'm building a big block as well except I'm at 511 ci. I have a 98 mm precision with a g trim wheel and a 1.50 housing.

Do you guys have e85 or ethanol (e100) there? Your motors static compression would make it a great candidate for alcohol. You could easily run 20 psi on that motor with that fuel and you wouldn't need two tune ups.

What does that camshaft look like spec wise? Turbo grind or no?
 

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Discussion Starter #14
Not a Turbo grind, I will have a camshaft ground for my application when I have all the parts needed for the build.

We have access to Ethanol, the turbo guys here have been using it mixed and straight up.
 

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well LilJohn I was just trying to say a big diesel turbo wouldn't work and a smaller 5.9 turbo might give the 6-7 pounds he was originally looking for.
 

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461poncho, yea with that much static compression it's a great candidate for e85 to e100 whatever you have readily available.
 

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Those diesels might be big but they typically turn half the rpms a gas motor would. Generally speaking a gas motor half the size of the diesel it came off of would be somewhat fitting. HX35s off of cummins 5.9s are typically used on 2-3L gas motors. You will need two of them at minimum on a big block and even then they are on the small side.

I have quite a few customers that run HX35s on 2.5L inline 6's making 350ish whp and they are spooled by 3500rpm. Motors typically spin to 62-6700 rpm.
 

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Made 430 rwhp with a hx35 on a 2.3 ford. 484 rwhp with that same turbo upgraded to a hx40 compressor. They work great as twins on mild small blocks too.
 

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well LilJohn I was just trying to say a big diesel turbo wouldn't work and a smaller 5.9 turbo might give the 6-7 pounds he was originally looking for.
They are too small to be efficient at all on a motor that big. Study some more. Big motors need big turbos or you will get hot air and high back pressure. A 565 is 9.3 liters. It would take 4 hx35s to work.
 

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Hmmmmmmm quad turbo 565 big block on ethanol..... That's kinda sick to think about ain't it.
 
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