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Old 09-05-2016, 06:28 PM
joshhol joshhol is offline
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Join Date: Nov 2002
Location: Flyover State
Posts: 1,364
The stem seal job is done. One more small step to getting this thing moving again, it's on the upswing hopefully.

I took some readings with my leak down tester while holding the valves up even though I couldn't get the engine to operating temp.

Cyl #1 had the worst loss. 42% air loss with air felt escaping from the exhaust port. I may have been wrong earlier in saying the intake valve guide on #1 felt loose. I could go back and remove the valve springs again on #1 to check but what's the point. This probably explains the ashy condition of the #1 spark plug noted in an old post I made.
Cylinders 2 - 6 were ok with a range of 6 - 10% loss. Cold engine.

I hadn't noticed much of a miss before, she always idled pretty nicely.

Question is driving on it the way it is, will further damage occur to the lower end? (Incomplete combustion causing gas to wash the cylinder walls?) If I were to pull the head, I'd want to remove the block and replace front/rear and lower pan seals (assuming the cylinders were ok). If I pulled the engine, I might as well remove EVERYTHING and make this a rolling chassis, have the whole carcass media blasted and fix all the rust, then put everything back together. And, I don't have time for that right now.

When running, I only put maybe 1,000 miles a year on it. (can't drive it in winter, horrible swamp a$$ summers means I use the VW A/C when it's unbearable, and I use the 300D more than the fin. Very selective about where/when I use it)
I may be able to begin tearing it down in another 5-7 years when I'm out of the military and I don't have to worry about dismantling a car and then getting orders to move.
Attached Thumbnails
M180 valve stem seals underway-stem-seal.jpg  
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63 220S W111
76 300D W115
2013 VW JSW TDI M6

previously-
73 280 SEL 4.5
86 300E 5 speed
2010 VW Jetta TDI M6
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