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Unread 09-09-2013, 01:37 PM   #1
scottmmb
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1987 YJ Wrangler 
 
Join Date: Sep 2013
Posts: 65
Vacuum diagrams

I recently dropped a 4.2 from a 78 cj5 in my 87 yj. The vacuum lines worry me. Also need to know if there will be any wiring problems

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Unread 09-09-2013, 01:39 PM   #2
dancytron
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1990 YJ Wrangler 
 
Join Date: Jun 2008
Location: st. louis
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Probably ought to post on the CJ forum.

This will tell you what was in the YJ. http://home.sprynet.com/~dale02/list.htm
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Unread 09-10-2013, 08:45 AM   #3
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
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Look the nutter bypass and vacuum lines. That is the configuration you want.
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Unread 09-10-2013, 10:08 AM   #4
superj
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1987 YJ Wrangler 
 
Join Date: Mar 2008
Location: corpus christi, texas
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where do you live? what type of emissions do they do in your area? if no emissions inspections, run the lines like an old cj. thats how my 87 is ran. zero problems
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Unread 09-10-2013, 11:19 AM   #5
scottmmb
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Ohio. Already took the pollution pump off so that eliminated most of the uneccesary crap
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Unread 09-10-2013, 12:27 PM   #6
Que89YJ
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1989 YJ Wrangler 
 
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You need the nutter setup for sure.
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Unread 09-12-2013, 08:41 AM   #7
scottmmb
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Quote:
Originally Posted by Que89YJ
You need the nutter setup for sure.
Which is?
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Unread 09-12-2013, 09:21 AM   #8
dancytron
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1990 YJ Wrangler 
 
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Location: st. louis
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He is talking about the Nutter bypass. What most of us do instead of making all the emissions stuff actually work is bypass the computer and then set the engine up to run like a 1978 or so Jeep. You've just gone the extra step of actually replacing the whole engine instead of changing a couple of wires and then taking a lot of stuff off. http://www.jeepforum.com/forum/f8/ho...bypass-522262/ http://home.sprynet.com/~dale02/ignmods.htm

I think a 1978 Factory Service manual is going to be the place to find what you want to know.
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Unread 09-12-2013, 09:35 AM   #9
scottmmb
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1987 YJ Wrangler 
 
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Quote:
Originally Posted by dancytron
He is talking about the Nutter bypass. What most of us do instead of making all the emissions stuff actually work is bypass the computer and then set the engine up to run like a 1978 or so Jeep. You've just gone the extra step of actually replacing the whole engine instead of changing a couple of wires and then taking a lot of stuff off. http://www.jeepforum.com/forum/f8/ho...bypass-522262/ http://home.sprynet.com/~dale02/ignmods.htm

I think a 1978 Factory Service manual is going to be the place to find what you want to know.
Well the only emissions devices on it are a pump and the egr. I did away with the pump and ill just keep the egr. There's only a couple hoses left. On is off the back of the t on the valve cover. Don't know where it goes. And there are some small ones below the battery
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