|
CCV and PCV
What is the difference between Closed Crankshaft Ventilation (on Jeep
Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? Is CCV simply a vacuum based system sucking out Crankshaft gases, while PCV has a valve to ensure no reverse vacuums due to backfires? What are the pros and cons of both? If these questions are not meant for this groups, please suggest where I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L owner learning the engine internals - just for kicks and maybe to do self-maintenance. Thank you. |
Re: CCV and PCV
One works and the other doesn't. Convert to PCV:
http://home.sprynet.com/~dale02/aircl.htm#pcv It's should have been done on recall, as the solenoid failed and the orifice clogged, and blew oil into the air filter box. God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "stilllearning" <shahswim@yahoo.com> wrote in message news:1179112126.837803.263870@e51g2000hsg.googlegr oups.com... > What is the difference between Closed Crankshaft Ventilation (on Jeep > Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? > Is CCV simply a vacuum based system sucking out Crankshaft gases, > while PCV has a valve to ensure no reverse vacuums due to backfires? > What are the pros and cons of both? > > If these questions are not meant for this groups, please suggest where > I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L > owner learning the engine internals - just for kicks and maybe to do > self-maintenance. > > Thank you. > -- Posted via a free Usenet account from http://www.teranews.com |
Re: CCV and PCV
One works and the other doesn't. Convert to PCV:
http://home.sprynet.com/~dale02/aircl.htm#pcv It's should have been done on recall, as the solenoid failed and the orifice clogged, and blew oil into the air filter box. God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "stilllearning" <shahswim@yahoo.com> wrote in message news:1179112126.837803.263870@e51g2000hsg.googlegr oups.com... > What is the difference between Closed Crankshaft Ventilation (on Jeep > Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? > Is CCV simply a vacuum based system sucking out Crankshaft gases, > while PCV has a valve to ensure no reverse vacuums due to backfires? > What are the pros and cons of both? > > If these questions are not meant for this groups, please suggest where > I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L > owner learning the engine internals - just for kicks and maybe to do > self-maintenance. > > Thank you. > -- Posted via a free Usenet account from http://www.teranews.com |
Re: CCV and PCV
One works and the other doesn't. Convert to PCV:
http://home.sprynet.com/~dale02/aircl.htm#pcv It's should have been done on recall, as the solenoid failed and the orifice clogged, and blew oil into the air filter box. God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "stilllearning" <shahswim@yahoo.com> wrote in message news:1179112126.837803.263870@e51g2000hsg.googlegr oups.com... > What is the difference between Closed Crankshaft Ventilation (on Jeep > Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? > Is CCV simply a vacuum based system sucking out Crankshaft gases, > while PCV has a valve to ensure no reverse vacuums due to backfires? > What are the pros and cons of both? > > If these questions are not meant for this groups, please suggest where > I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L > owner learning the engine internals - just for kicks and maybe to do > self-maintenance. > > Thank you. > -- Posted via a free Usenet account from http://www.teranews.com |
Re: CCV and PCV
One works and the other doesn't. Convert to PCV:
http://home.sprynet.com/~dale02/aircl.htm#pcv It's should have been done on recall, as the solenoid failed and the orifice clogged, and blew oil into the air filter box. God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "stilllearning" <shahswim@yahoo.com> wrote in message news:1179112126.837803.263870@e51g2000hsg.googlegr oups.com... > What is the difference between Closed Crankshaft Ventilation (on Jeep > Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? > Is CCV simply a vacuum based system sucking out Crankshaft gases, > while PCV has a valve to ensure no reverse vacuums due to backfires? > What are the pros and cons of both? > > If these questions are not meant for this groups, please suggest where > I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L > owner learning the engine internals - just for kicks and maybe to do > self-maintenance. > > Thank you. > -- Posted via a free Usenet account from http://www.teranews.com |
Re: CCV and PCV
The CCV is just vacuum constant through a metered hole. The little
plastic tube plugs up easily on them then the air filter gets oil spits. The metered hole in the rubber grommet can be cleaned with a paper clip and carb cleaner works well on the tube. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) stilllearning wrote: > What is the difference between Closed Crankshaft Ventilation (on Jeep > Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? > Is CCV simply a vacuum based system sucking out Crankshaft gases, > while PCV has a valve to ensure no reverse vacuums due to backfires? > What are the pros and cons of both? > > If these questions are not meant for this groups, please suggest where > I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L > owner learning the engine internals - just for kicks and maybe to do > self-maintenance. > > Thank you. > |
Re: CCV and PCV
The CCV is just vacuum constant through a metered hole. The little
plastic tube plugs up easily on them then the air filter gets oil spits. The metered hole in the rubber grommet can be cleaned with a paper clip and carb cleaner works well on the tube. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) stilllearning wrote: > What is the difference between Closed Crankshaft Ventilation (on Jeep > Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? > Is CCV simply a vacuum based system sucking out Crankshaft gases, > while PCV has a valve to ensure no reverse vacuums due to backfires? > What are the pros and cons of both? > > If these questions are not meant for this groups, please suggest where > I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L > owner learning the engine internals - just for kicks and maybe to do > self-maintenance. > > Thank you. > |
Re: CCV and PCV
The CCV is just vacuum constant through a metered hole. The little
plastic tube plugs up easily on them then the air filter gets oil spits. The metered hole in the rubber grommet can be cleaned with a paper clip and carb cleaner works well on the tube. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) stilllearning wrote: > What is the difference between Closed Crankshaft Ventilation (on Jeep > Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? > Is CCV simply a vacuum based system sucking out Crankshaft gases, > while PCV has a valve to ensure no reverse vacuums due to backfires? > What are the pros and cons of both? > > If these questions are not meant for this groups, please suggest where > I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L > owner learning the engine internals - just for kicks and maybe to do > self-maintenance. > > Thank you. > |
Re: CCV and PCV
The CCV is just vacuum constant through a metered hole. The little
plastic tube plugs up easily on them then the air filter gets oil spits. The metered hole in the rubber grommet can be cleaned with a paper clip and carb cleaner works well on the tube. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) stilllearning wrote: > What is the difference between Closed Crankshaft Ventilation (on Jeep > Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? > Is CCV simply a vacuum based system sucking out Crankshaft gases, > while PCV has a valve to ensure no reverse vacuums due to backfires? > What are the pros and cons of both? > > If these questions are not meant for this groups, please suggest where > I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L > owner learning the engine internals - just for kicks and maybe to do > self-maintenance. > > Thank you. > |
Re: CCV and PCV
One works and the other doesn't. Convert to PCV:
http://home.sprynet.com/~dale02/aircl.htm#pcv It's should have been done on recall, as the solenoid failed and the orifice clogged, and blew oil into the air filter box. God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "stilllearning" <shahswim@yahoo.com> wrote in message news:1179112126.837803.263870@e51g2000hsg.googlegr oups.com... > What is the difference between Closed Crankshaft Ventilation (on Jeep > Grand Cherokees 4.0L) and Positive Crankshaft Ventilation (On 4.7L)? > Is CCV simply a vacuum based system sucking out Crankshaft gases, > while PCV has a valve to ensure no reverse vacuums due to backfires? > What are the pros and cons of both? > > If these questions are not meant for this groups, please suggest where > I can ask such questions. I am a Jeep Grand Cherokee 2004 limited 4.0L > owner learning the engine internals - just for kicks and maybe to do > self-maintenance. > > Thank you. > -- Posted via a free Usenet account from http://www.teranews.com |
| All times are GMT -4. The time now is 04:33 AM. |
© 2024 MH Sub I, LLC dba Internet Brands