The Teflon was for the oil pressure which sees 100 psi cold. I was not advocating use of Teflon for EGT, which is under 15 psi in 617.9xx. Maybe it does not need anything to seal? If it does, I'd use aluminum foil strips.

__________________
85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

If you have an N/A diesel, vacuum section is useful and the boost section is useless.

The pressure is irrelevant. The concern with teflon tape for EGT is the temperature. Above ~230 C, teflon releases poisonous fumes that will put you in the hospital. Above ~500 C, teflon produces a deadly gas that will kill you at even minute concentrations. It's called octafluoroisobutylene and is 10x more deadly than the phosgene gas used in trench warfare of WW I. You don't want to be anywhere near this stuff.

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1998 E300 turbodiesel

America's Rights and Freedoms Are Not The Enemy!

Why would it be useful for a NA diesel exactly?

__________________
1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD

Clogged air filter warning? Our GM Diesel has a ratcheting indicator downstream of the air cleaner that goes from green to yellow to red as the filter clogs.

Sixto
83 300SD can be yours
98 E320 wagon

The air filter minders turn red at 25 inches of water, which is equal to 1.84 in-Hg ( or .8 psi)....not very visible on a typical automotive vacuum gauge.

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Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica

Depends on the model, it would have to be one that uses a throttle plate or tuned intake in order to create significant vacuum. Certain years with 617 engine had these, and all the n/a 606's. Probably others too that I'm not familiar with. Anyways, old timers used vacuum gauges to train the driver for fuel economy.

__________________
1998 E300 turbodiesel

America's Rights and Freedoms Are Not The Enemy!

The 617's never came with pneumatic governed injection pumps - only the MW, and M pump post 1980 for non US cars Think the later throttles were only for EGR purposes (no vacuum as such) and later diesels also had them to prevent the engine bouncing off compression on shutoff I believe.

Diesels won't run with much vacuum, remembering you can't compress air to ignite fuel if you haven't got any air to compress in the first place (dynamic compression ratio / volumetric efficiency reduced).

The 80's petrol MBs had vacuum / "economy" gauges FWIW. No diesels

__________________
1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD