I have a MC2100 and power brakes on mine. The stock air filter designed for power brake CJs won't fit on a MC2100. So I had to go with a cheesy CAI to get around the size issue. I took some ribbing when I posted pics of it. Took a bit to convince them that I know I was not getting cold air and I know it is was not creating more HP. It was just a cheap and easy fix to find a air filter that would fit my setup.

 

Summit Racing has offset air cleaner bases. They move a 14" filter 1-1/2" so the distance from the center of the carb to the edge of the filter housing is 5-1/2". Maybe this could work for you?

 

I used the K&N 9 inch and I have power brakes. Clearance is fine. I'll get a picture tonight if you want it.

https://www.jegs.com/i/K&N/599/60-1.../60-1080/10002/-1?gclid=EAIaIQobChMIlePP_NGI5wIVSJyzCh2wwATXEAQYAiABEgJbQ_D_BwE

 

How big is the air cleaner base on the Howell/GM TBI?

 

It measures 5 1/8 inches.

 

I fitted the stock air cleaner on My 1980 304. Not sure if Howell uses the same throttle body for the 258. It matched up really good.

 

So probably same as Holley four barrel.

 

That would be great I would appreciate a picture. Thank you

 

Sure thing. Here you go. Pay no attention to the zip ties on the wiring! I just put in a new harness and haven't loomed it up yet.

 

I put a 9” filter on mine, it has a 5 1/8” base, same as a four barrel (holley or Q-jet). I guess a larger diameter would have worked since I have manual brakes, but it’s only a 110 HP 258 CID motor, it’s not like it moves a lot of air.

 

I put a 9" filter on mine, it has a 5 1/8" base, same as a four barrel (holley or Q-jet). I guess a larger diameter would have worked since I have manual brakes, but it's only a 110 HP 258 CID motor, it's not like it moves a lot of air.

Looks identical to mine with manual brakes. Should be plenty of room with the brake booster.

 

Thanks guys for all the responses,now to figure out what one will work best.

 

I'd use one of these, with the original air cleaner assembly before going to an open element type.

Matt

 

I'd use one of these, with the original air cleaner assembly before going to an open element type.

Matt

When I bought the Jeep it already had an open air filter,the stock one was no where to be seen.

 

The original filter housing wouldn't work anyhow without modification. The opening where it attaches to the carb/TBI isn't large enough.

 

You missed my earlier post which included a picture of a 2 to 4-barrel adapter ring that would allow use of the original air cleaner. Unfortunately, the OP doesn't have the original.

Matt

 

I used a Spectre brand. However, it wasn't plug-n-play, I had to acquire the tall, early 90's Chevy 4.3L throttle body spacer, and weld it to the standard size spacer for the same vehicle to obtain the right height to clear everything. In the end, worked well just required some customizing (which is often the case w/our Jeeps).

 

Go here and check out post #372

https://www.jeepforum.com/forum/f8/adam-s-1979-cj5-frame-up-1363422/index25.html#post39869857

JS

 

When I did my TBI setup on the 258, I used an air cleaner off of a S-10 I believe it was.
I took a few measurements and just roamed the local junk yard and picked one up that fit the bill.

 

What year S-10 did you use? Do you have a picture? Thanks

 

you will need this spacer

https://sams4x4.com/i-849-sams-4x4-gm-valve-cover-ventilation-spacer.html?ref=category:44

JS

 

I have a similar setup at Axhammer. I installed the K&N 9" air filter on my TBI, works like a charm. I'm not cool enough to have power breaks but presume this unit will leave you enough room.
Please disregard the incorrect connections of the lines to the TBI, the front PCV valve is now connected to the TBI and not the rear elbow (not sure how that happened). Also disregard the wiring, it's my first time running wiring and I obviously have no idea what I am doing and got a little Medussa-like but it runs like a scalded dog so I am happy!

 

I’m currently running the Airaid part #200-100.

 

90's 4.3l is about all i remember these days, lol