Posted by drussell on January 13, 2020 at 05:46:13 from (137.200.32.22):
Truck is a 2000 F550 with 7.3 PS diesel. My question relates to the crankcase vent deletion mod. I've researched this and am finding two schools of thought. First is that the mod is a good idea as the oil that gets into the turbo and intercooler from the vent will gum things up, plug the intercooler and this will cause problems long term with the turbo and intercooler. Second is that it's a bad idea because the vacuum the turbo creates on the ccv is needed to help actually vent the crankcase and that deleting it also causes problems long term to the engine because it no longer is vented apprpriately.
I know that the length, size and number and degree of elbows that are placed in a pipe will restrict the pressure. I wonder if part of the problem with these mods is the size of the tubing, number of elbows, length of the tubing, etc, that are installed. The older engines that had the ccv vented to the atmosphere had a relatively short tube with one 90 degree elbow. This would cause significantly less restriction than a tube several feet long that winds and twists here and there eventually coming out well to the rear of the engine. I wonder if a short tube with no more than one elbow would adequately vent the crankcase on these engines.
What are your thoughts about this? Good idea to do the ccv delete, bad idea, won't hurt the turbo/intercooler, will hurt the engine, etc?
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