3rd Gen High Performance and Accessories (5.9L Only) Talk about Dodge/Cummins aftermarket products for third generation trucks here. Can include high-performance mods, or general accessories. THIS IS FOR THE 5.9L ONLY!

4.4/level 9, why would my motor want a 62/14 over the stocker?

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Old Jan 29, 2008 | 09:58 PM
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4.4/level 9, why would my motor want a 62/14 over the stocker?

Hello. Like it says. I am running the 4.4/level 9 all the time. Why would this make a stock turbo hard on my motor? Is it true my motor would be happier with a 62/14?

Thanx.
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Old Jan 29, 2008 | 10:02 PM
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Originally Posted by jmccart
Hello. Like it says. I am running the 4.4/level 9 all the time. Why would this make a stock turbo hard on my motor? Is it true my motor would be happier with a 62/14?

Thanx.
Drive pressure you are exceeding the limits of the stock turbo by oooh a mile!!! The 62/14 will exhale a lot better...
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Old Jan 29, 2008 | 10:23 PM
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Thanx Shane. Does the smaller turbo not let the exhaust waste get out past the turbo fast enough?
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Old Jan 29, 2008 | 10:57 PM
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The stock turbo is about a 9 cm housing. Even with the wastegate, it won't compare to a 14 cm housing with a wastegate. The exhaust pinwheel on the 62/14 is bigger also. This will allow for better flow and control the exhaust pressure better.
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Old Jan 29, 2008 | 11:15 PM
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read my signiture, my new silver 62 made a huge difference along with an ats exhaust manifold and arc flow. i installed a fass at the same time so i dont know how much each mod made a difference but i have quicker spool up it seams to me. made the exhaust a much deeper tone also
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Old Jan 30, 2008 | 08:23 AM
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Originally Posted by chrleb1
The stock turbo is about a 9 cm housing. Even with the wastegate, it won't compare to a 14 cm housing with a wastegate. The exhaust pinwheel on the 62/14 is bigger also. This will allow for better flow and control the exhaust pressure better.
Took the words out of my mouth!!!
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Old Jan 30, 2008 | 10:50 AM
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Now I will sound really stupid. So the passage from on the exhaust side of the turbo, that does the spinning of the whole shaft, has more volume?

Thanx guys. I am still learning on these babies.
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Old Jan 30, 2008 | 10:57 AM
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Yep, the bigger housing lets the exhaust escape easier, which lowers the drive pressure between the motor and the turbo. The only poblem is with a larger exhaust housing, the exhaust is moving slower as it passes by the turbine, this makes for a slower spool up.
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Old Jan 30, 2008 | 01:11 PM
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Originally Posted by OldSmokey
Yep, the bigger housing lets the exhaust escape easier, which lowers the drive pressure between the motor and the turbo. The only poblem is with a larger exhaust housing, the exhaust is moving slower as it passes by the turbine, this makes for a slower spool up.

That was quality info for my current state of turbo knowledge. Thanx.
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Old Jan 30, 2008 | 02:30 PM
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You are putting 50 - 70 plus hp up in smoke right now with your stocker.

Go bigger!
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Old Jan 30, 2008 | 03:07 PM
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Originally Posted by cquestad
You are putting 50 - 70 plus hp up in smoke right now with your stocker.

Go bigger!
Nuf said!!!!
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Old Jan 30, 2008 | 09:53 PM
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Originally Posted by Luvnacumns
Nuf said!!!!
50-70 hp associated with just a turbo? Would that be applicable to the mods in my sig if i were to add a 62/13 (and a fuel pump)?

Trying to decide on a turbo vs. lorenz susp....50-70 hp tilts me toward turbo....so just want to confirm.
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Old Jan 30, 2008 | 10:46 PM
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Originally Posted by cquestad
You are putting 50 - 70 plus hp up in smoke right now with your stocker.

Go bigger!

That would be cool if smoke went down a tad.
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Old Jan 31, 2008 | 12:58 AM
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It will.... you will be moving more air. On the bottom end, it might have a little more. The mid-range and top-end will have less.
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