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  #1  
Old 06-23-2011, 08:53 PM
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Beach_Dude Beach_Dude is offline
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Air breather and cold air socket

I don't know what you call it, but here goes.

On late model FSJs the breather has an attachment that connects the tube of the breather then runs to the front of the engine compartment, assuming for cool air.

The funny thing is that my jeep has the square black plastic piece, next to the battery, but not the appropriate breather or any method to attach such a thing.

I'm sure getting cooler air would help performance at least a percent or two, maybe even more. My reasoning is because I know how hot it gets in there.

Any ideas? Maybe buy a late model breather with that hose that attaches to the front?
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  #2  
Old 06-23-2011, 09:00 PM
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You're missing the air filter housing with the end that the flexible snorkel goes on? Just pick up one from any V8 Jeep, or anything that had a 4bbl or 2150 carb (like old Fords), and use that. Late 70's and early 80's Ford air filter housings should be a direct fit, you may find a dual intake air filter housing, then you can get the plastic piece from a Wrangler or other old Jeep and put it on the driver's side under the coolant bottle, and run dual snorkels.
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  #3  
Old 06-23-2011, 10:50 PM
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grand_wag_85 grand_wag_85 is offline
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Dan brought up a good point. There are already two square hook up deals on most of the later FSJ's for the air intake. The hoses themselves should be less than $20 each
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  #4  
Old 06-23-2011, 11:23 PM
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Question

Quote:
Originally Posted by grand_wag_85
Dan brought up a good point. There are already two square hook up deals on most of the later FSJ's for the air intake. The hoses themselves should be less than $20 each


And just where are you finding these scarce pieces of FSJ lore The round metal stuff is a dime a dozen, but the OEM accordian plastic/vinyl hose is rumored to be made of unobtanium!!
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  #5  
Old 06-24-2011, 08:00 AM
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newtojeeps newtojeeps is offline
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Does you air cleaner have a round intake? does it have the round plastic hose adapter on it? Or is it after market.
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  #6  
Old 06-24-2011, 08:03 AM
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grand_wag_85 grand_wag_85 is offline
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Quote:
Originally Posted by Tigger4X
And just where are you finding these scarce pieces of FSJ lore The round metal stuff is a dime a dozen, but the OEM accordian plastic/vinyl hose is rumored to be made of unobtanium!!

I got mine from Vatozone. I didn't know they were hard to find
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  #7  
Old 06-24-2011, 08:07 AM
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Quote:
Originally Posted by grand_wag_85
I got mine from Vatozone. I didn't know they were hard to find

Come to think of it that was the round one for the '76. I forgot they switched to square in the 80's.
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  #8  
Old 06-24-2011, 08:27 AM
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seventynine seventynine is offline
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They switched to the square accordion hose in '78 or '79. Bjs sells them:

http://www.bjsoffroad.com/cartgenie/...?pid=108&cid=3
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  #9  
Old 06-24-2011, 12:55 PM
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Here's what I have:






The filter housing.








The port behind the battery




As you can see, I have a different setup that the 79+ breather. What my ultimate question is if there is a performance increase, no much much as HP or torque, but air/fuel distribution and burning performance.

I know all of my friends install CAI (Cold Air Intake)s on their cars because the cold air seems to burn better. I am also assuming that this is why AMC/Jeep did this on the later models.

Has anyone made the switch? Do you guys think it would be worth it? I tend to think that the drop in air temp could be quite amazing compared to my current intake setup.

Ideas?
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1977 Jeep Cherokee Chief
360 w/ MC 4350
Modified header exhaust w/ported AIR Injection
Slightly modified suspection
Original paint, garaged/non-op for over 15 years
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  #10  
Old 06-24-2011, 02:10 PM
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letank letank is offline
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I guess someone switched the air filter....
As said above the round nose piece has a round adapter.
Head to your home improvement center and get some clothe dryer duct.... It can be fitted to match your square valence piece.... I do not have the round piece on the valence, but added the dryer duct... of course it is metallic so it may conduct heat....
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  #11  
Old 06-24-2011, 05:07 PM
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Beach_Dude Beach_Dude is offline
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Where would I find this adapter?

Also, what would it be called? I've searched all over the FSJ sites, BJs, ZM, TeamGW...

Thanks for all your help!
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1977 Jeep Cherokee Chief
360 w/ MC 4350
Modified header exhaust w/ported AIR Injection
Slightly modified suspection
Original paint, garaged/non-op for over 15 years
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  #12  
Old 06-28-2011, 11:15 AM
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seventynine seventynine is offline
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Your air cleaner is correct for '77 but they had a plastic collar on the end of the horn where the round accordian hose connected. And there was a round plastic connection flange at the header panel. Perhaps someone replaced the header panel at some point from an accident and used a later model unit.

Here is a pic of my '77 showing the factory round hose. You can see just the edge of the plastic collar that bolts on to the air Horn:



Post a thread in the wanted section for a both plastic pieces (header panel and air horn) I'm sure someone will hook you up for pretty cheap.

Don't quote me on this but based on the measurements I just took off the Chief it looks like this hose is the right length and diameter:

http://www.dormanproducts.com/p-6187-96086.aspx
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  #13  
Old 07-17-2011, 07:27 PM
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The vehicle has never been in an accident. My father has known the vehicle and the PO since it was originally bought new, and I bought it in 95.

After going through the TSMs and the Chiltons manual, they all show the breather without a hose...

Has anyone seen a round connect on the front of the engine compartment? Also, if you look at the pictures I supplied, you'll notice that it's cut out for a rectangular fitting, not round.

I looked up the hose for a 80 chrysler T&C 5.2, which is the same part.

It might just be easier to by a new breather?
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1977 Jeep Cherokee Chief
360 w/ MC 4350
Modified header exhaust w/ported AIR Injection
Slightly modified suspection
Original paint, garaged/non-op for over 15 years
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  #14  
Old 07-17-2011, 07:28 PM
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Seventynine, could you take a picture of the addapter that connects the hose to the front of the engine compartment for me?

I will be quite the grateful one!

Thank you if you can!
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1977 Jeep Cherokee Chief
360 w/ MC 4350
Modified header exhaust w/ported AIR Injection
Slightly modified suspection
Original paint, garaged/non-op for over 15 years
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  #15  
Old 07-17-2011, 07:35 PM
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Rich88 Rich88 is offline
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Quote:
Originally Posted by Beach_Dude
I'm sure getting cooler air would help performance at least a percent or two, maybe even more. My reasoning is because I know how hot it gets in there.

The answer is: Yes. Cooler intake air provides a more dense charge. This is a performance item.
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  #16  
Old 07-17-2011, 08:02 PM
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Serious Johnson Serious Johnson is offline
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I'm not surprised that a '77 might have pieces unique to a few vehicles that fit a hose from a round snorkle to a rectangular bulkhead hole. That's just how Jeep did things in those days when nobody knew who would own the company next month. My '78 has rectangular on both ends. By the way, the area of that stock intake is a little larger than that of the 401's 4-barrel carb, so enlarging it does nothing until you start making more power. Insulating it might help.

I guess it must have been 8 or 10 years ago when I bought the rectangular hose for a couple of bucks off the "HELP" rack at the local chain store -- didn't realize that they had become rare. Performance is enhanced by almost every measure when air from outside the hot engine bay is ingested. Exceptions are when the heat stove has been disabled and cool, moist intake air leads to carb icing. And warmer intake air can give better fuel mileage (for the same reasons that it decreases power), but not generally on vehicles without adaptive fuel injection.

S.J.
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  #17  
Old 07-17-2011, 08:09 PM
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Quote:
Originally Posted by Beach_Dude
Seventynine, could you take a picture of the addapter that connects the hose to the front of the engine compartment for me?

I will be quite the grateful one!

Thank you if you can!


Its a little bit difficult to see in this pic, but its a, originally, black piece of plastic that has three screws that hold it to the core support panel. I have one of them in my '87 Grand Wag and one on my '79 J-10.




Or did you mean the adapter that connects the hose to this port?
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Quote:
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Post #14 ~ http://www.ifsja.org/forums/vb/showt...=1#post1580206

Last edited by Tigger4X : 07-17-2011 at 08:11 PM.
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  #18  
Old 07-20-2011, 11:59 AM
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Beach_Dude Beach_Dude is offline
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Looks like rockauto.com have this:


There are a few makes, and they're all around $10. It appears that the back side is round and the front is rectangular, which would fit my stock adapter.

Any success with other people?
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Modified header exhaust w/ported AIR Injection
Slightly modified suspection
Original paint, garaged/non-op for over 15 years
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