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I have trouble believing you removed the engine from a brand new vehicle with 16k miles and pulled off the oil pan to drill and weld an oil return hose. Then removed the pcv valve. All for what, from a perfectly good running vehicle for no reason? Its not a performance car so why would you do that. And this is supposed to be 20 years ago? You kept the same car for 250,000 miles with no pcv system?
In any case its impossible what you claimed. No engine can remain clean for 200k miles without pcv. Pics and records or it didn't happen. Story is sus
Here we are at 267K and I don't see sludge on the valvetrain.
1800 mile road trip plus a few passes at the track . you decide if you would rather pass thru the t/b and blower or into a can and dispose of it. ill take the latter. almost 6ozs from my m/m can into a cut gallon container (my setup is fender mounted with a road race top so fumes dont get into my suspension harnesses. simply drain it from under the car
When I first purchased my new C7 I added a catch can thinking it was a sound and reasonable idea.
But after reading and studying Kingtalon's data I became a believer in his point of view.
So off came the catch can.
If I become too OCD I can always look at my valves using one of my borescopes thru the spark plug holes. If I see anything suspicious I'll then pull the intake manifold for a better look. My gut feeling and Kingtalons data I doubt that I will find any real amount of carbon build up. If I do I'll clean the valves and then revisit the catch can option.
I would really be interred in seeing 2 identical, close as possible, C7's that had run 50 to 75k miles one with a catch can and one with out and compare.
But at this point I'm convinced that Kingtalon hit the nail on the head.
I've been in R&D for too many years to ignore his data.
When I first purchased my new C7 I added a catch can thinking it was a sound and reasonable idea.
But after reading and studying Kingtalon's data I became a believer in his point of view.
So off came the catch can.
If I become too OCD I can always look at my valves using one of my borescopes thru the spark plug holes. If I see anything suspicious I'll then pull the intake manifold for a better look. My gut feeling and Kingtalons data I doubt that I will find any real amount of carbon build up. If I do I'll clean the valves and then revisit the catch can option.
I would really be interred in seeing 2 identical, close as possible, C7's that had run 50 to 75k miles one with a catch can and one with out and compare.
But at this point I'm convinced that Kingtalon hit the nail on the head.
I've been in R&D for too many years to ignore his data.
He also said my engine should be full of sludge, yet it isn't.
My engine at 30,000 miles , no blower , I only added my catch can recently during the blower install . LT motors are not like other DI motors with poorly designed PCV systems like BMW or Volkswagon ... Every BMW I owned had to have the heads "walnut shell" blasted at 25 to 30 thousand miles ....
