CCV System For Boosted Engines - Hemi Truck Club
 
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Old 11-05-2014, 09:40 AM   #1
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CCV System For Boosted Engines

Wanted to start up this topic due to there is some interesting info out there. And have had a few problems on my front mount turbocharged 348 Hemi engine in this area. Looking forward to everyone's opinions and positive suggestions. Here's what I've found from the short trip to the Mopars with Big Daddy show and Funday Sunday(didn't run the truck due to this problem).

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Old 11-05-2014, 09:46 AM   #2
Stu
 
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Here's a few pics of the problem.

This is the stuff that gets into your intake ports if the system isn't designed correctly like using the oem intake manifold. It was suggested by a few to plum in the crank case ventilation into the turbo inlet after it goes threw an oil separator from each valve cover vent. If I would have done that. All that junk would have been in my turbo, intercooler, and intake manifold. It was only around a 300 mile trip just cruising. No boosting up. Interesting isn't it.......
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Old 11-05-2014, 03:38 PM   #3
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That stuff was just on the trip home from Orlando Speed World. Cleaned out the temporary oil catch can at the track.

Have redesigned it. Added a lower cross over hose(equalize venting flow), air filter after each oil catch can for venting. Upper cross over hose with the inline pcv, check valve and inline fuel shut off valve on the intake manifold vacuum. The fuel valve is so I can adjust the amount of vacuum I want.

Have noticed the truck idles better and doesn't hunt in rpms on start up when the valve is partly opened. Even the vacuum has gone up a little. Over all the truck just seems to run better this way. The truck was tuned with a pcv vacuum loss. But, do plan on installing another oil catch can on the vacuum hose side too.

If all this works. Great! If not. It was something I just wanted to try at least.
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Old 11-05-2014, 04:01 PM   #4
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I'm keeping mine simple for the most part and maint free. Venting left side to fresh air and running two scavenger vents down to header collectors so it's sucked and blown away from engine. been over 6k since I did them and the check valves still work perfectly fine.
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Old 11-05-2014, 04:06 PM   #5
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One of the guys at the muffler shop said, "should be able to vent to your 4" down pipe". Not sure if that can work or how to build that???? Haven't seen it on any turbo setups yet.
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Old 11-05-2014, 04:11 PM   #6
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Yes out a pipe cut on a 45 at 45 degrees inside the 4" down pipe just after the turbo and the exhaust will create a vacuum across that pipe. You will need the check valve or exhaust will blow back up tune. Jegs has kits pipe and valve pretty cheap too.
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Old 11-05-2014, 05:16 PM   #7
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Ricky(muffler shop) said, it only has to be a straight pipe due too the truck has straight through mufflers?
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Old 11-05-2014, 05:27 PM   #8
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Nope will need the angle pointed to rear of exhaust to create a vacuum across the tip
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Old 11-05-2014, 05:29 PM   #9
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Yep, that's what I was thinking Keith. I believe he said that too. Going to have to do a little research on this subject. Still haven't seen anyone do this on a turbo set up.
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Old 11-05-2014, 05:37 PM   #10
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What oh yeah all my friends run this as the vacuum pump backup just incase belt fails. Take a pipe cut on a 45 and install It at a 45 pointing toward rear of exhaust system the higher the flow
Across the end the more vacuum created. The more free flowing the exhaust the better.
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