Which breather cap to use? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > Which breather cap to use?

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineToxic Brakes - 3000 PSI Braided Stainless Steel Brake LineCess Recovery Gear Snatch Tow Strap OffRoad @ ROCKRIDGE4WD

Reply
Unread 01-08-2012, 08:32 PM   #1
jeepero81
Registered User
1980 CJ7 
 
Join Date: Nov 2011
Location: Thomasville, Georgia
Posts: 41
Which breather cap to use?

I'm getting ready to complete my valve cover project and carter, or holley in my case, swap with a mc2100. I want to delete the air handler and put an aftermarket chrome breather cap in but I can't figure out which one to use.

The stock grommet dia. is 0.45" internal on my '80 CJ. Is it just trial and error until I find one that fits or does someone have a part number and/or brand they would like to suggest to help a forum brother out?

Thanks!


jeepero81 is offline   Reply With Quote
Unread 01-08-2012, 09:44 PM   #2
Skerr
<*////><
 
Skerr's Avatar
1985 CJ7 
 
Join Date: Sep 2008
Location: White Springs, Florida
Posts: 8,786
Take the grommet with you to the parts store and test fit. Easiest method I know of to save aggravation.
__________________
Kerrdog
Go Fish! <*////><

"Contemplate the mangled bodies of your countrymen, and then say 'what should be the reward of such sacrifices?' ... If ye love wealth better than liberty, the tranquility of servitude than the animated contest of freedom, go from us in peace. We ask not your counsels or arms. Crouch down and lick the hands which feed you. May your chains sit lightly upon you, and may posterity forget that you were our countrymen!" —Samuel Adams

Clay's Build Thread
http://www.jeepforum.com/forum/f8/cl...hread-1061897/
Scott's Build Thread
http://www.jeepforum.com/forum/f8/sc...5-cj7-1147913/
Fallon (and Dad) Build Thread
http://www.jeepforum.com/forum/f11/f...-okee-1445206/
Skerr is offline   Reply With Quote
Unread 01-08-2012, 10:22 PM   #3
Mickey_Mouse
Registered User
2013 KK Liberty 
 
Join Date: Dec 2011
Posts: 726
I have the mc2100 and replaced the pcv valve(s) and connected into the carb.

I used this breather filter for the back of the valve cover from advance auto :

http://shop.advanceautoparts.com/web...7CGRP2019_____

it did not fit perfect and fell out a couple of times in the driveway b-c it wasnt seated all the way. I had to take a knife and trim some of the rubber from around it. I did not cut a excess amount off though, just enough to where it would fit super tight. I had to take a screwdriver and force it around into the valve cover. I have a aluminum valve cover and now the filter doesnt move at all.


they also come in the pcv style : http://shop.advanceautoparts.com/web...CGRP2019_____3

cannot remember exactly where I got the PCV valves either Napa or Advance Auto. I purchased two or three of them that looked similar to this :

http://www.napaonline.com/Catalog/Ca...235_0262373487

and one like this : http://www.napaonline.com/Catalog/Ca...228_0306245574
Mickey_Mouse is offline   Reply With Quote
Unread 01-09-2012, 10:05 AM   #4
jeepero81
Registered User
1980 CJ7 
 
Join Date: Nov 2011
Location: Thomasville, Georgia
Posts: 41
Thanks for the heads up guys, I'll check out the stores this week!
jeepero81 is offline   Reply With Quote
Unread 01-09-2012, 11:04 AM   #5
Ken4444
Corripe Cervisiam
 
Ken4444's Avatar
1985 CJ7 
 
Join Date: Oct 2005
Location: Houston, Texas
Posts: 4,356
I used Mr. Gasket # 2057. It fit well into the grommet in my valve cover. You can see it in the lower corner of the second photo.



__________________
"I give you a republic, if you can keep it." - Benjamin Franklin
Ken4444 is offline   Reply With Quote
Unread 01-09-2012, 12:34 PM   #6
Mickey_Mouse
Registered User
2013 KK Liberty 
 
Join Date: Dec 2011
Posts: 726
Quote:
Originally Posted by Ken4444 View Post
I used Mr. Gasket # 2057. It fit well into the grommet in my valve cover. You can see it in the lower corner of the second photo.





where did you get the air filter?
Mickey_Mouse is offline   Reply With Quote
Unread 01-09-2012, 12:42 PM   #7
Ken4444
Corripe Cervisiam
 
Ken4444's Avatar
1985 CJ7 
 
Join Date: Oct 2005
Location: Houston, Texas
Posts: 4,356
Quote:
Originally Posted by Mickey_Mouse View Post
where did you get the air filter?
Summit Racing. Comes in different colors.
Air Filter Assembly, 8 1/2 in. Diameter, Round, Steel, Chrome, Moroso Logo, 2 3/8 in. Filter Height, Each
http://www.summitracing.com/parts/MOR-66310/

The benefit is that it's larger than the tiny 6" ones you see on Jeeps where a standard 9" filter didn't clear the brake booster.

Be aware that you can't get a standard off-the-shelf filter element for it though; you have to pay $15 for one from Moroso as far as I know.
__________________
"I give you a republic, if you can keep it." - Benjamin Franklin
Ken4444 is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.