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Author Topic: What is a waste gate for  (Read 1603 times)

Offline Sarge

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What is a waste gate for
« on: January 17, 2009, 12:22:02 am »
I was reading a post on the RV forum about a hissing noise  and the responces point to the waste gate. I never heard of this?
Would some one enlighten me. :scratch: the 5.9L has one so I guess the 6.7L would too

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Sarge
« Last Edit: January 17, 2009, 12:24:55 am by Sarge »
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Offline lilfroger

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Re: What is a waste gate for
« Reply #1 on: January 17, 2009, 12:22:57 am »
The waste gate lets the turbo let off pressure. 
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Offline Sarge

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Re: What is a waste gate for
« Reply #2 on: January 17, 2009, 12:27:40 am »
Thanks Jo you helped this old fart out.
08 Mega Cab 6.7,6spd auto , EB, 4x4  8' bed
and a beautiful co-pilot of 43 years next to me.
Retired totally now.

Offline Mitch

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Re: What is a waste gate for
« Reply #3 on: January 17, 2009, 01:59:10 am »
The 6.7 does not have a wastegate. We have a VGT (Variable Geometry Turbo.) Which means, the turbo vanes are actuated depending on the boost pressure needed. In lamens terms, if the boost pressure gets too high, the turbo will actuate to produce less boost.

This sounds like a good idea, but with the DPF going into REGEN and over fueling the engine to get the temp up, the soot builds up on the turbo shaft, and jams up the actuating process. If your exhaust brake starts cutting in and out, then that is what is happening. Mine started doing it, then I drove a full tank highway at high RPMs, and it cleared it up. I haven't had a problem since I did the delete.
2022 2500 Laramie CCLB, 6.7 CTD, stock
57 Chevy 3200 pickup, 12V swap
1985 Jeep CJ10A former Tug- Dana 60, 6cyl Nissan diesel
2020 Mahindra Roxor, Dana 60s F/R, Ag tires

 

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