Thanks everyone.

Sixto, if I can figure out how to get egr to work. I will. I am a tree lover. Thx everyone great discussion!

If Rube Goldberg suggestions are welcome, consider a system that burns CNG or LPG and plumbs cooled but still pressurized exhaust into the EGR valve. Use the CNG or LPG engine to run engine accessories so you're not throwing away the resource. The accessories will be happier running at constant rpm. Hmm... how do you attach a freewheel to the crank damper?

Sixto
83 300SD

Um? Why?

CO2 dumped into the intake could stop a runaway...

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

OP wants to keep EGR active with a cooler, cleaner charge that doesn't gunk up the intake manifold.

Sixto
83 300SD

Solution:

Rebuilt injectors from Greazzer
Properly done drip timing
Proper wastegate setting for stock boost
Properly tuned ALDA
Valve adjustment
Build and install an oil catch can on the valve cover vent
Cleaned EGR valve and tubing
Cleaned intake manifold

Problem solved, and much less expensive, complicated, and maintenance intensive than the OP's proposed contraption. Proper engine operation from being in tune will not produce a huge amount of soot. A catch can will separate the oil vapor from the blowby and prevent it from mixing with EGR gasses.

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'84 190D 2.2 5MT (Red/Palomino) Current car. Love it!
'85 190D 2.2 Auto *Cali* (Blue/Blue) *sold*
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