258 carb replacement question - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 06-11-2000, 11:02 PM Thread Starter
Join Date: Nov 1999
Posts: 389
Thanks: 0
Thanked 0 Times in 0 Posts
258 carb replacement question

I have a 78 cj-5 with 258 I-6 and the carter yf 1 barrel carb. I want to replace this piece with a 2 barrel manual choke carb. What cfm flow does this engine require-it is stock. The webber is an option but costs $350. I was re-reading the Jeep owners bible by Moses Ludel and he recommends using the Holley 2300 series carbs. One is a 350 cfm and the other is a 500 cfm. Which one would be better matched to the 258's needs. Also what type of float bowls are better for general off roading -side hung or center hung. The holley carb is about $150 cheaper than the webber. Has anyone experianced any problems with their Webber carbs while off roading such as flooding etc? Any other carb recommendations from other manufacturers? Thanks for any advice.

wheelerfreak is offline  
Sponsored Links
post #2 of (permalink) Old 06-12-2000, 05:50 PM
JMZ's Avatar
Join Date: Feb 2002
Location: gonzales,TX
Posts: 189
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 258 carb replacement question

Webber is the BOMB !

JMZ is offline  
post #3 of (permalink) Old 06-12-2000, 08:23 PM
Posts: n/a
Re: 258 carb replacement question

Why dont you try an early Carter BBD 2 brl. One without the stepper motor. I think it was on 258's up to about '83. I tryed The Weber and had nothing but probs. The non computer controlled BBD works great. Just not sure if it will fit on your intake???
Good luck........Herbie

Sponsored Links
post #4 of (permalink) Old 06-13-2000, 01:31 AM
Posts: n/a
Re: 258 carb replacement question

I have a friend that had the weber and nothing but problems for a year until he yanked it and threw on a holley. I have a holley 350 cfm two barrel from summit racing and I love it. It is easy to tune which means if gas keeps going up, I lean it out a bit or richen it up if I need more power. I run an adapter plate with the stock intake and contrary to popular belief it runs great. Go with the holley and a HEI. You will love it.

Tim 85 CJ-7 2.5 Skyjacker, 2 inch body, Herculiner, Holley carb, 32 Dunlop Muds, HEI
post #5 of (permalink) Old 06-13-2000, 08:04 AM
Posts: n/a
Re: 258 carb replacement question

Mostly for CJBUDDA - Adaptor plate from Summitt also? Carb and plate part numbers? Thanks

post #6 of (permalink) Old 06-13-2000, 02:54 PM
Join Date: Sep 1999
Posts: 4,143
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 258 carb replacement question

I run a Weber 38 and have no real problems with it. I even ran it for a few months without an air filter while I was rigging up the snorkel adapters. The jets are way easy to clean out and that is the only thing that seems to clog. I also have an HEI on my 258

Just bought a DJ-5C! Sliding doors and right-hand drive are cool [img]/wwwthreads_images/icons/cool.gif[/img]
Sycho15 is offline  
post #7 of (permalink) Old 06-13-2000, 04:14 PM
Posts: n/a
Re: 258 carb replacement question

I actually have had boh. Right now I have the Weber. Dang good carb. I replaced the 500cfm 2300 Holey, because I couldn't pass emmisions. The Weber is so much more stable off-road, but it is less tunable. I have the holley in my garag right now with the adapter plate. E-mail me if you want to talk about buying it.
[email protected]

I live, I breath, I Jeep
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome