Official catch can/crank case vent system thread
the pressure is lower and and can continualy build to the point of creating a problem and on a dd car i wouldent trust the check valve as they arent designed to be used on a dd app when they go bad spent fuel is shoved into the engine
^^^ want to be sure that you are not talking about the stock LNF fresh air check valve or the Oil seperator check valves in our unit, both are well tested and validated. The fresh air by GM and the seperator by Mann for Diesel application ( DI of course)
but if it was used, it sounds like it would have to have an atmospheric vent in addition to the evac, or the pcv left functional ?
I've seen mention of using factory air pump check valves instead of the aftermarket due to reliability issues
I think I might just stick with the intake
thanks for the input!
the lnf is a junk setup and the valve coaking isent just an di problem (although it happens alot faster in di) ive pulled plenty of engines apart with the intake valves coaked up carburated and injected from oil vapor
Last edited by mrbelvedere; Dec 7, 2012 at 03:38 PM.
the other night i was doing 110 in 5th dropped to 4th floored it and let off about 130 and 6500 rpm i coasted to 50 mph then the check engine light started flashing and my 06 ss/sc was missing and running rough. stopped looked under hood and entire engine bay was covered in oil. dip stick was popped up other than that no other visible problems.. any ideas what caused this and what i may have broke? feel free to email me @ lnhetzner_stephens@yahoo.com im in a pinch and need to get my car fixed fast
true. But its also true thats its probably terminal, its not going to be fixed fast, and its gonna cost lotsa dollars. cheapest ebay 2.0 motor i found in a quick scan is 1000 +shipping
its easier to think it will be the lesser of the problems. I feel for him. When I burnt valves I thought the idle was weird and a shimmy was just a misfiring plug. Turned out to be melted valves...
I finally built a cheap catchcan, seem to be catching lots of this:
smells like my oil, but then again my oil has always smelled like fuel even in the summer months. different block and head too, no change. I wonder if my PCV valve is plugged? Its cold and wintery and hardly ever in boost, almost seems like the supply line is doing all the venting. Yes plenty of short trips, condensation is substantial and I've got that nice milky white buildup under the oil cap.
smells like my oil, but then again my oil has always smelled like fuel even in the summer months. different block and head too, no change. I wonder if my PCV valve is plugged? Its cold and wintery and hardly ever in boost, almost seems like the supply line is doing all the venting. Yes plenty of short trips, condensation is substantial and I've got that nice milky white buildup under the oil cap.
I finally built a cheap catchcan, seem to be catching lots of this:
smells like my oil, but then again my oil has always smelled like fuel even in the summer months. different block and head too, no change. I wonder if my PCV valve is plugged? Its cold and wintery and hardly ever in boost, almost seems like the supply line is doing all the venting. Yes plenty of short trips, condensation is substantial and I've got that nice milky white buildup under the oil cap.
smells like my oil, but then again my oil has always smelled like fuel even in the summer months. different block and head too, no change. I wonder if my PCV valve is plugged? Its cold and wintery and hardly ever in boost, almost seems like the supply line is doing all the venting. Yes plenty of short trips, condensation is substantial and I've got that nice milky white buildup under the oil cap.
I finally built a cheap catchcan, seem to be catching lots of this:
smells like my oil, but then again my oil has always smelled like fuel even in the summer months. different block and head too, no change. I wonder if my PCV valve is plugged? Its cold and wintery and hardly ever in boost, almost seems like the supply line is doing all the venting. Yes plenty of short trips, condensation is substantial and I've got that nice milky white buildup under the oil cap.
smells like my oil, but then again my oil has always smelled like fuel even in the summer months. different block and head too, no change. I wonder if my PCV valve is plugged? Its cold and wintery and hardly ever in boost, almost seems like the supply line is doing all the venting. Yes plenty of short trips, condensation is substantial and I've got that nice milky white buildup under the oil cap.
Fuel vapor in the PCV can also be bad rings, loose fitting pistons, etc.
Now that I'm turbo i have the Hahn intake manifold there is a hose going from the PCV port on the head to a nipple on my manifold. Wouldn't it make sense to have an air/oil inline here along with a catch can hooked to oil cap and rear port on VC?
well for one thing routing the hose to the rocker cover cap would cause potentially huge reversion. I already do a proper PCV upgrade and Arm can customize it for you to your installation if you wish. Its not a 10 dollar ebay catch can, and you can see from c130 aviators pictures from last year, there is a lot of condensation that occurs in an improperly functioning PCV System. Check the info on Japetr's posts on his PCV set up. or read LNF gunk, even though you are not an LNF the principles are similar.
Turbo HHR, venting to the atmosphere on an LNF is unfortunate. If its a race engine thats one thing. For the street, difficult to tune for and the smell of venting oil will end up being tough to deal with. Thats a very nice siphon you got going on there, so for sure I would not recommend anyone copy your set up...
Turbo HHR, venting to the atmosphere on an LNF is unfortunate. If its a race engine thats one thing. For the street, difficult to tune for and the smell of venting oil will end up being tough to deal with. Thats a very nice siphon you got going on there, so for sure I would not recommend anyone copy your set up...
I rode in a friend's Subi that had a head leak, I wanted to vomit the entire ride.
Zero vac. Just a blowby vent. So most of that fuel vapor is settling right down into the oil.
John, you and I have explained this what over a dozen times each?
It is NOT that hard to comprehend. I am truly baffled by some of the setups I see.
John, you and I have explained this what over a dozen times each?
It is NOT that hard to comprehend. I am truly baffled by some of the setups I see.
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:tripplefacepalm! only way to explain u guys. please tell me what happens to vac under boost. it turns positvie! OMG!!!!! so then explain how ur setup with a vac source works under boost. oh wait it doesnt...its pushing everything back and it ends up not collecting **** under boost, and last i checked u dont get blowby at idle.