Crankcase evac. check valve

rallye bob · 01-09-2010, 09:08 AM

Can't you purchase these check valves at any parts store, for about half the price of a "name brand"? If so. Can anyone help with a part#? Are they all the same? TIA
http://i6.ebayimg.com/01/i/000/99/3a/e982_1.JPG

Kegracing · 01-09-2010, 09:39 AM

I used some "air pump check valves" from a mid 80's Ford Ranger, several years ago. Sorry, do not remember exact year or numbers... Were much cheaper, and exactly same. Was working on one for a friend, saw them, and I actually cut an old one up to see inside, etc. Worked great on my headers.

Maybe someone else will jump in here with numbers... If not, go to your favorite Autozone, O'Riley etc and get them to look around for you.

Good luck,

Ken

rallye bob · 01-09-2010, 01:14 PM

I think GM used them in the late '70's early '80's air pump deal..... ??????

Alan Roehrich · 01-09-2010, 01:23 PM

It's an A.I.R. check valve, found on most any vehicle with an A.I.R. pump.

rallye bob · 01-10-2010, 04:13 PM

OK...... Let me ask this... How often do these check valves need replacing?
Is there a way to check (pardon the pun) if they are working properly?

Alan Roehrich · 01-10-2010, 04:15 PM

Blow through the hose side, and you should get air to pass. Blow through the threaded side and air should not pass. Depending on how often you race, and what the local environment is like, they usually last a year or two.

Volare Nate · 01-13-2010, 03:56 PM

Standard Motor Products p/n AV7 will work for your needs. It fits some GM's, Fords and Chrysler products in the '70's and '80's.

01-09-2010, 09:08 AM	#1
rallye bob Member Join Date: Sep 2006 Location: Genoa, Illinois Posts: 488 Likes: 9 Liked 6 Times in 4 Posts	Crankcase evac. check valve Can't you purchase these check valves at any parts store, for about half the price of a "name brand"? If so. Can anyone help with a part#? Are they all the same? TIA http://i6.ebayimg.com/01/i/000/99/3a/e982_1.JPG

01-09-2010, 09:39 AM	#2
Kegracing Member Join Date: Jun 2002 Location: Red Oak, TX Posts: 441 Likes: 0 Liked 0 Times in 0 Posts	Re: Crankcase evac. check valve I used some "air pump check valves" from a mid 80's Ford Ranger, several years ago. Sorry, do not remember exact year or numbers... Were much cheaper, and exactly same. Was working on one for a friend, saw them, and I actually cut an old one up to see inside, etc. Worked great on my headers. Maybe someone else will jump in here with numbers... If not, go to your favorite Autozone, O'Riley etc and get them to look around for you. Good luck, Ken

01-09-2010, 01:14 PM	#3
rallye bob Member Join Date: Sep 2006 Location: Genoa, Illinois Posts: 488 Likes: 9 Liked 6 Times in 4 Posts	Re: Crankcase evac. check valve I think GM used them in the late '70's early '80's air pump deal..... ??????

01-09-2010, 01:23 PM	#4
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,095 Likes: 1,541 Liked 1,769 Times in 402 Posts	Re: Crankcase evac. check valve It's an A.I.R. check valve, found on most any vehicle with an A.I.R. pump. __________________ Alan Roehrich 212A G/S

01-10-2010, 04:13 PM	#5
rallye bob Member Join Date: Sep 2006 Location: Genoa, Illinois Posts: 488 Likes: 9 Liked 6 Times in 4 Posts	Re: Crankcase evac. check valve OK...... Let me ask this... How often do these check valves need replacing? Is there a way to check (pardon the pun) if they are working properly?

01-10-2010, 04:15 PM	#6
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,095 Likes: 1,541 Liked 1,769 Times in 402 Posts	Re: Crankcase evac. check valve Blow through the hose side, and you should get air to pass. Blow through the threaded side and air should not pass. Depending on how often you race, and what the local environment is like, they usually last a year or two. __________________ Alan Roehrich 212A G/S

01-13-2010, 03:56 PM	#7
Volare Nate Junior Member Join Date: Oct 2009 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	Re: Crankcase evac. check valve Standard Motor Products p/n AV7 will work for your needs. It fits some GM's, Fords and Chrysler products in the '70's and '80's.