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Trucks [ Eighteen Wheelers ] Roll On Big Mama. Forum/Discussion about Eighteen Wheeler Trucks. What truck do you like or dislike? Is your favorite truck a Mack, Peterbilt, Kenworth, Marmon, Volvo or Freightliner? Which diesel engine do you prefer; Detroit Diesel, Cummins, or...

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Old 06.02.2009
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Originally Posted by 830hp C16 View Post
What its job???
Pulse turbocharging is not working without it. You can only have max 3 cylinders connected to same tube, if there's more they start to disturb each others exhaust blowdown event. In some test divided housing gave full boost over 1000rpm earlier. Great Fakes should have known that..
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  ^ Top   #32  
Old 06.02.2009
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Originally Posted by V8Lenny View Post
That's why it's not working under 1400rpm. You should by a divided housing.
Just came to my mind, maybe you can use the stock exhaust housing with that new turbo. No need to buy another housing. Just block the waste gate to get full boost.
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  ^ Top   #33  
Old 06.02.2009
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Originally Posted by V8Lenny View Post
Just came to my mind, maybe you can use the stock exhaust housing with that new turbo. No need to buy another housing. Just block the waste gate to get full boost.
Might look into that the housings look the same,that could be why it has so much lag without the big injectors.
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  ^ Top   #34  
Old 06.02.2009
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I'm going to be getting measurements from a 600 probably later this week to compare and may be trying it on the truck
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  ^ Top   #35  
Old 06.03.2009
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Originally Posted by underpsi View Post
I'm going to be getting measurements from a 600 probably later this week to compare and may be trying it on the truck
Do you mean a turbo off a C16 ??
I have snapped 2 shafts on a C16 turbo,1 after blocking the wastegate hose and the other after playing with the wastegate actuator.
If the housing off my stock turbo fits this GT47 it could be a winner,thicker shaft,faster spooling and able to take more punishment.

Turbo's take a beating in this country because of the terrain a lot of powering up through the gears and then engine braking.
Most trucks run 4:33 or 4:11 rears and 95% of them are 18spd trans to cope with the hills.
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Old 06.03.2009
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Originally Posted by underpsi View Post
I'm going to be getting measurements from a 600 probably later this week to compare and may be trying it on the truck
This is from one I measured a while ago.

C16 turbo
Waste gate opening pressure- 22psi
Inlet- A/R 0.81
Impeller Inducer- 79.5mm
Impeller Exducer- 108.5mm (my note book had a question mark next to this one but I cant remember why)
Inlet fins- 6 short, 6 long
Exhaust A/R- 1.41
Exducer bore- 92mm
Exhaust fins- 10
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  ^ Top   #37  
Old 06.03.2009
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Lenny may be onto something with lack of the split pulse thing resulting in poor spool up, be careful trying to fit your old exhaust housing to the Garrett turbo, it may look the same but have some small difference that causes problems, measure heaps first.
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Old 06.03.2009
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Is there any difference between turbo's with the 600s?
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  ^ Top   #39  
Old 06.03.2009
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Quote:
Originally Posted by Jas View Post
This is from one I measured a while ago.

C16 turbo
Waste gate opening pressure- 22psi
Inlet- A/R 0.81
Impeller Inducer- 79.5mm
Impeller Exducer- 108.5mm (my note book had a question mark next to this one but I cant remember why)
Inlet fins- 6 short, 6 long
Exhaust A/R- 1.41
Exducer bore- 92mm
Exhaust fins- 10
Very close to Garrett sheet of 47 but not guite. Impeller 80.7mm , 108mm , A/R 0,69 , exhaust 92,7mm. Maybe just a question of measurement accuracy. Biggest exhaust A/R for 47 is 1.39 . Maybe gt 50 is just a 47 with bigger A/R compressor and exhaust housing and wastegate? Only info I could find about GT50 is this

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Old 06.03.2009
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Quote:
Originally Posted by Jas View Post
Lenny may be onto something with lack of the split pulse thing resulting in poor spool up, be careful trying to fit your old exhaust housing to the Garrett turbo, it may look the same but have some small difference that causes problems, measure heaps first.
They are both Garrett and where it clamps to the center section looks the same.
Nothing is ever simple I think I might talk to the local Garrett dealer see what they think,they might even have a different housing for the 47.
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