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Unread 06-02-2009, 08:12 PM   #106
jon1371usmc
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1998 TJ Wrangler 
 
Join Date: May 2009
Location: Nashville, Tennessee
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I have recently performed the bypass on my Jeep. I would like to eliminate all unnecessary tubes, smog equipment, etc..., that I no longer need to have due to bypassing the computer. Is there a thread out there showing what can be removed? I want to clean up the engine compartment to the bare necessities.

Thanks

Jon

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Unread 06-02-2009, 09:13 PM   #107
ET48
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Quote:
Originally Posted by jon1371usmc View Post
I have recently performed the bypass on my Jeep. I would like to eliminate all unnecessary tubes, smog equipment, etc..., that I no longer need to have due to bypassing the computer. Is there a thread out there showing what can be removed? I want to clean up the engine compartment to the bare necessities.

Thanks

Jon
I plan to do the same really soon, I am just gonna start it, and start pulling. If it dies or doesn't start back up, I am leaving it. I think that is alittle easier sometimes.
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1986 CJ-7 LAREDO, 4.2L, 5 speed, 3.31 Gears, D30, D44, 2.5" ProComp lift, 3" BL, 33" TSLs.
1998 TJ SAHARA, 4.0L, 5 speed, 4.11 Gears, D30 (Aussie Locked), Ford 8.8, 4.5" Custom LA, XRC8, AA SYE, TW DS, ZJ tie-rod, Full-Traction front adj. track bar, 35" KM1s.
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Unread 06-02-2009, 09:15 PM   #108
ET48
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Quote:
Originally Posted by jon1371usmc View Post
I have recently performed the bypass on my Jeep. I would like to eliminate all unnecessary tubes, smog equipment, etc..., that I no longer need to have due to bypassing the computer. Is there a thread out there showing what can be removed? I want to clean up the engine compartment to the bare necessities.

Thanks

Jon
This guy has a pretty good website for determining what can be pulled and what can't be. http://home.sprynet.com/~dale02/
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1986 CJ-7 LAREDO, 4.2L, 5 speed, 3.31 Gears, D30, D44, 2.5" ProComp lift, 3" BL, 33" TSLs.
1998 TJ SAHARA, 4.0L, 5 speed, 4.11 Gears, D30 (Aussie Locked), Ford 8.8, 4.5" Custom LA, XRC8, AA SYE, TW DS, ZJ tie-rod, Full-Traction front adj. track bar, 35" KM1s.
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Unread 06-02-2009, 09:35 PM   #109
jon1371usmc
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Does anyone have any pictures of their engine bay/ carberator after they removed all the useless hoses, vacuum tubes, etc.... I would like to see what worked for you.

Jon
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Unread 06-03-2009, 05:26 AM   #110
Mike Romain
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If you folks read through this thread, it will tell you exactly what to keep for a good runner. All the vacuum hookups are covered.

To repeat myself, you need the PCV system including the charcoal canister (gas tank vent eh), the ported vacuum lines for the CTO to turn on the canister and the distributor advance, the EGR valve for a better high speed burn (cam is designed for an EGR) and the air filter flaps to prevent the carb from becoming a block of ice if you live cold.
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86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
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Unread 06-03-2009, 06:15 PM   #111
jon1371usmc
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Is it okay to remove the sol-vac setup.

Last edited by jon1371usmc; 06-03-2009 at 07:05 PM..
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Unread 06-04-2009, 05:08 AM   #112
Mike Romain
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Quote:
Originally Posted by jon1371usmc View Post
Is it okay to remove the sol-vac setup.
Yes, although some folks keep it and wire it to a switch so they have an instant fast idle at the flick of a switch.
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86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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Unread 06-04-2009, 10:49 AM   #113
John Strenk
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Quote:
Originally Posted by Mike Romain View Post
Yes, although some folks keep it and wire it to a switch so they have an instant fast idle at the flick of a switch.
Yep, it's nice if you have AC or an converted AC to Air Compressor setup. Great if you have a wench also.
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Unread 06-06-2009, 05:55 PM   #114
jon1371usmc
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Quote:
Originally Posted by Mike Romain View Post
Yes, although some folks keep it and wire it to a switch so they have an instant fast idle at the flick of a switch.
Why would you need the fast idle? Is it mainly for off-roading, or for hauling/pulling?
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Unread 06-07-2009, 03:02 PM   #115
Mike Romain
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Quote:
Originally Posted by jon1371usmc View Post
Why would you need the fast idle? Is it mainly for off-roading, or for hauling/pulling?
Winching, boosting, AC, Auto....
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86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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Unread 06-27-2009, 04:40 AM   #116
stoneywaves
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To everyone who has done this

Is everyone getting the same results as mike romain? 20+ miles, great drivability at all angles. If so Mike I want your results. I just rebuilt my engine and tranny and carb (when I say I - I mean I paid someone for their services) and am getting average 12.5 which is aggravating as all hell
Thanks. 1983 cj7 258. Everything is stock except for a mild "RV" cam by elgin pro stock e-1122-p. My timing is set at 15 btdc.
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Unread 08-02-2009, 05:51 PM   #117
only1chip
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Thanks soooooo much!

I just performed this bypass on my '83 CJ7 and it worked like a champ. Actually due to my 4 cyl engine (150CID) with Carter YF carb, all I had to do was wire the two (orange & violet) wires from the ignition to the distributor (roughly steps 6-11). I don't have the stepper motor on the carb, so that was mute.

After 6 months of issues with my jeep, replaced the computer!, purchased rebuilt carb, new distributor, etc. But this was the ticket! Truth be told, it probably needed most of the other parts, except the new computer...

A few details the may help future CJers: after replacing my carb, at first the jeep ran great, then over the next 40-50 miles the operation deteriorated, especially in 3rd and 4th gear. It acted like it was running out of gas (believe me I know that symptom - broken gas gauge!). I could feather the peddle or even NASCAR the jeep back an forth to get it to fire correctly - but it would never have the correct power in those gears - interestingly it seem to run pretty well in first and second. This mod. and it runs great. And yes I live in GA, where after 25 years we're exempt from all emissions testing.

Thanks to the all the people who have posted here, this board was the key to getting my jeep running again!
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Unread 08-02-2009, 07:25 PM   #118
Mr-Rock
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Just an FYI,
Here in CT we have to go thru emissions every two years. After doing the nutter bypass, here are my "Pass" readings.
-HC(PPM), CO(%), NOx (PPM), RPM
Limit- 160, 3.09, 4000
Actual 160, 1.88, 444, 1949

I have since done the Team Rush upgrade hoping it helps with the Hydrocarbons. Guess I'll find that out in a couple of years!
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Unread 09-06-2009, 02:47 PM   #119
vertdog
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Hey Mike or Luckycheesehead...

I am in process of nuttering and have 2 questions. Anyone chime in with answers. First, where can you get new connectors for the igniton module? I just wired the new orange and purple straight to module. Second, my CTO switch only has 2 vacum fittings, the diagrams show 4. Do I just use t's to run my lines. Thanks in advance!
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Unread 09-06-2009, 07:11 PM   #120
lopezzi
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vertdog,
Check out this thread, mine also only has the 2 port CTO and this is how mine is setup. Read through the thread, the guys were really helpful. There is also pics on it that show you how to do it and I have pics of my setup with it all done.

http://www.jeepforum.com/forum/f8/nu...r-34-a-544678/
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