Emissionless CJ...am I the only one? - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

Reply
 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 01-23-2001, 04:52 PM Thread Starter
Veteran
 
Join Date: Nov 2000
Location: newly relocated to Huntsville, AL
Posts: 845
Thanks: 0
Thanked 0 Times in 0 Posts
 
Emissionless CJ...am I the only one?

i have been the proud owner of an emissionless CJ for 1 1/2 years now, and i still manage to sleep well at night except for one nagging trouble - it only ALMOST runs good. i have tried putting this vaccuum here and that one there, plugging this one, advancing the timing, retarding the timing, leaning the carb, etc. etc. etc. there just always seems to be something - it runs great, but won't idle. or it will idle but gets 11mpg. does anyone have any suggestions for a set up that will work?

it is a stock 258, rebuilt maybe 20k ago. carter BBD. no cat. no smog pump. many of the vacuum lines have been either plugged or rerouted.

any and all suggestions (except buy all new emissions stuff and return it to stock) are appreciated.

thanks all
shawn

"Fear causes hesitation and hesitation causes your worst fears to come true"
80cj is offline  
Sponsored Links
Advertisement
 
post #2 of (permalink) Old 01-23-2001, 05:06 PM
 
Join Date: Jun 2000
Posts: 526
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Emissionless CJ...am I the only one?

Since you're not worried about the emissions, get a Weber carb. It's a bolt-on swap for your manifold, and they idle MUCH better.


'86 CJ-7, 360, T-176, Dana 44 rear w/Truetrac, Dana 30, 4" Superlift, Slickrock hangers, Currie steering brace, JKS discos, 4:11s, Warn HS9500i on Durango bumpers.
BillR is offline  
post #3 of (permalink) Old 01-23-2001, 05:23 PM Thread Starter
Veteran
 
Join Date: Nov 2000
Location: newly relocated to Huntsville, AL
Posts: 845
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Emissionless CJ...am I the only one?

do you think that a weber would be a better route than a holley 390 (besides the added hastle of having to go to a 4 bbl intake for the holley)?

thanks,
shawn

"Fear causes hesitation and hesitation causes your worst fears to come true"
80cj is offline  
Sponsored Links
Advertisement
 
post #4 of (permalink) Old 01-23-2001, 08:17 PM
 
Join Date: Sep 1999
Posts: 4,143
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Emissionless CJ...am I the only one?

Why would you want a 4-barrell Holley 390 when Holley makes 2- barrells all the way up to 500cfm?

I love my Weber 38, my engine could really use a cam now!


'Gator Chaser
Sycho15 is offline  
post #5 of (permalink) Old 01-23-2001, 08:36 PM
Addict
 
Dana's Avatar
 
Join Date: Sep 1999
Location: CT, USA
Posts: 418
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Emissionless CJ...am I the only one?

No, you're not the only one.... and yes, it can be made to run OK. I have a 79 with 258/BDD and no emissions stuff and it runs fine. Look for vaccuum leaks, that usually seems to be the problem whenever I had trouble with mine..... or a bad choke (I finally put a manual choke on mine). All the vaccuum lines are plugged, except of course the spark advance. Mine even still passes emissions with all the crap (EGR, cat, pump, canister, etc.) removed, gets maybe 13 mpg. I also find it runs better (more low end torque) with the timing advanced 2 past where the book says.

Of course, very steep hills are still a problem, but you can't escape that with a Carter.

-Dana

The dinosours died because they didn't have a space program!

Dana is offline  
post #6 of (permalink) Old 01-23-2001, 08:54 PM
 
Join Date: Jun 2000
Posts: 526
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Emissionless CJ...am I the only one?

I know with the Weber, you can get rid of about 90% of all the vacuum lines running everywhere under the hood. It makes a lot more power and runs well at angles, too. The hookup is easy, and the kit includes everything you need. It even comes with a K&N filter. The K551 kit is the 32/36, which is all you need without a cam or a built motor. I did an HEI swap at the same time, and was able to get rid of even more crap including the computer.

'86 CJ-7, 360, T-176, Dana 44 rear w/Truetrac, Dana 30, 4" Superlift, Slickrock hangers, Currie steering brace, JKS discos, 4:11s, Warn HS9500i on Durango bumpers.
BillR is offline  
post #7 of (permalink) Old 01-24-2001, 09:45 AM Thread Starter
Veteran
 
Join Date: Nov 2000
Location: newly relocated to Huntsville, AL
Posts: 845
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Emissionless CJ...am I the only one?

the theory that i've heard is that a small 4 bbl is more efficient than a large 2 bbl. b/c you are only using 2 of the small ones most of the time instead of the 2 big ones. makes sense.

shawn

"Fear causes hesitation and hesitation causes your worst fears to come true"
80cj is offline  
post #8 of (permalink) Old 01-24-2001, 01:21 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: Emissionless CJ...am I the only one?

Why not use a motorcraft 2bbl? They work very well offroad and are very inexpensive to by and adapt to the stock (or aftermarket)manifold.

Dan
<font color=blue> "Sometimes one pays most for the things one gets for nothing. "
-- AlbertEinstein
</font color=blue>


post #9 of (permalink) Old 01-24-2001, 02:53 PM Thread Starter
Veteran
 
Join Date: Nov 2000
Location: newly relocated to Huntsville, AL
Posts: 845
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Emissionless CJ...am I the only one?

i never heard of using a motorcraft or are you talking about the ones that come stock on some jeeps? all that i have heard was about webers. what does a moto cost compared to a weber? what size motorcraft? what vehicle could i find one on?

thanks
shawn

"Fear causes hesitation and hesitation causes your worst fears to come true"
80cj is offline  
post #10 of (permalink) Old 01-24-2001, 03:49 PM
 
Join Date: Sep 1999
Posts: 605
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Emissionless CJ...am I the only one?

Here ya go...
http://bbs.off-road.com/wwwthreads//...view=&sb=&vc=1

'79 CJ-7
ChrisM is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

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

Password:


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

Email Address:
OR

Log-in










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