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Re: pcv or evac for a turbo engine
[Re: all spooled up]
#1068966
09/04/11 12:16 PM
09/04/11 12:16 PM
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Joined: May 2005
Posts: 54
VA Beach, VA
Runnoft
member
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member
Joined: May 2005
Posts: 54
VA Beach, VA
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If you can't run a vacuum pump (i.e. a street car), I would run a AN-10 vent line from each valve cover to two puke cans. One for each bank. No PCV. No Evac.
Cruiser: 66 Dodge Coronet 500, Indy SR 440, Gen 7 Accel EFI = 11.38 @ 116.
Racing: Brand X, X275 Procharged Smallblock on M1, Leafsprings, Holley EFI = 4.30 @ 168
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Re: pcv or evac for a turbo engine
[Re: all spooled up]
#1068970
09/05/11 01:16 PM
09/05/11 01:16 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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obviously a PCV won't work under boost, but on a street car, you're only under boost at WOT, and at part throttle cruise w/ manifold under vacuum 98% of the time.
if you have a breather on one side, that would allow pressure to breathe out under an extended WOT pull, but the PCV would open up as soon as you lift and go into vacuum on the manifold.
I'm just starting to learn about boost as I help a buddy put together a forged 5.9L to toss a turbo on in his Dakota....I know that boosted motors need a larger ring gap than NA, but if you're getting so much pressure that it can't breath out of a breather filter plug in the valve cover and starts pushing out gaskets and seals...wouldn't that mean you have too MUCH ring gap/blow by?
**Photobucket sucks**
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Re: pcv or evac for a turbo engine
[Re: CUUDAK]
#1068971
09/06/11 01:52 AM
09/06/11 01:52 AM
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Joined: May 2011
Posts: 83
Las Vegas NV
Revhard
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member
Joined: May 2011
Posts: 83
Las Vegas NV
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Quote:
That may work but if there is any pressure in the crankcase it could(more likely will) blow out every gasket in the engine. I will be using a setup like I had on my 8 second Falcon but only on one of the valvecovers and a filtered vent on the other valvecover like this,
[url=http://cgi.ebay.com/ebaymotors/EVAC-SYSTEM-CRANKCASE-VACUUM-DRAG-RACE-EVACUATION-/130570012054?pt=Race_Car_Parts&hash=item1e66944596]http://cgi.ebay.com/ebaymotors/EVAC-SYST...=item1e66944596l]My 
Then just use these. Just make sure they are away from any oil being thrown around under the valve covers and the tubes are pointed AWAY from the exaust. Which Im sure you already know. BUT catch cans can be made with almost anything, and I've seen them made with rockstar cans to beer cans. A real simple deal honestly, you could even make your own custom, and may have the stuff laying around to do it.
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