??? Vacuum advance question ??? - JeepForum.com
 
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post #1 of 9 Old 02-07-2002, 04:43 PM Thread Starter
Bob K
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??? Vacuum advance question ???

I have eliminated nearly all my emissions control equipment (and passed the advanced emissions test with flying colors). Now that i have only one vacuum hose to the distributor where should I run it off of to get the proper vacuum. I've been told "the ported vacuum fitting". Whis is...?


'87 Wrangler YJ 4.2 I6 (sorry, sold)
JuiceBox ignition
2 1/2" ProComp Lift
31" BFG A/T's
K&N Filter
Custom Rock Guards
Turbo Muffler
Rear Track Bar in the shed
Other Tricks I won't tell to just anybody!

'99 Grand Cherokee 4.7 V8
Towing Package
K&N FIPK
ProComp MX6 shocks
Borla Exhaust
Tow Hooks
Alpine CD with Infinity+iPod connect
Just getting started!

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post #2 of 9 Old 02-08-2002, 02:55 AM
MuddyCJ5
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I'm pretty sure it would go above the throttle plates (ported).
Dan
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post #3 of 9 Old 02-11-2002, 03:53 PM Thread Starter
Bob K
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Anybody know which vacuum fitting is correct?

'87 Wrangler YJ 4.2 I6 (sorry, sold)
JuiceBox ignition
2 1/2" ProComp Lift
31" BFG A/T's
K&N Filter
Custom Rock Guards
Turbo Muffler
Rear Track Bar in the shed
Other Tricks I won't tell to just anybody!

'99 Grand Cherokee 4.7 V8
Towing Package
K&N FIPK
ProComp MX6 shocks
Borla Exhaust
Tow Hooks
Alpine CD with Infinity+iPod connect
Just getting started!

If you're not living on the edge...
you're taking up too much space.
Bob K is offline  
post #4 of 9 Old 02-11-2002, 04:42 PM
MuddyCJ5
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You have 2 different kinds of vaccum on your engine, manifold and ported. manifold vaccuum is constant when the engines is running. Ported vaccuum is from a fitting above the throttle plates. At an idle it will not have vaccuum to it, when the throttle is open above an idle it WILL have vaccuum to it. This means at an idle you have no vaccuum advance in the distributor. As soon as you open the throttle your timing will advance. Good Luck, Dan
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post #5 of 9 Old 02-11-2002, 05:19 PM Thread Starter
Bob K
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I really appreciate your replies Dan. I wish you could tell me specifically which fitting on my Carter BBd is the one. I suspect it is the one on the passenger side of the carb in the center. Correct?

'87 Wrangler YJ 4.2 I6 (sorry, sold)
JuiceBox ignition
2 1/2" ProComp Lift
31" BFG A/T's
K&N Filter
Custom Rock Guards
Turbo Muffler
Rear Track Bar in the shed
Other Tricks I won't tell to just anybody!

'99 Grand Cherokee 4.7 V8
Towing Package
K&N FIPK
ProComp MX6 shocks
Borla Exhaust
Tow Hooks
Alpine CD with Infinity+iPod connect
Just getting started!

If you're not living on the edge...
you're taking up too much space.
Bob K is offline  
post #6 of 9 Old 02-13-2002, 06:01 PM
MuddyCJ5
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Bob, it really doesn't matter, anything above the throttle plates will work. Just pick a fitting about the same size as the hose. I'm sure the one you mentioned will work fine. Good luck, Happy Trails, Dan
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post #7 of 9 Old 02-15-2002, 12:09 PM
mike mcgovern
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I own a 82 cj-5 and had an engine fire. I to am trying to by-pass all the emissions crap and am woundering what still needs to be conected vacuum wise. I am having problems with the jeep loading up and stalling up hill only and have tried numrous float settings on the freshly rebuilt carb.(rebuilt by novice) Would mixed up vacuum lines cause this? Also you wouldnt happen to know what the all the vacumm lines coming out of the carb controll would you. I have almost all of them plugged except the one going to the electric choke.
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post #8 of 9 Old 02-15-2002, 12:10 PM
mike mcgovern
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I own a 82 cj-5 and had an engine fire. I to am trying to by-pass all the emissions crap and am woundering what still needs to be conected vacuum wise. I am having problems with the jeep loading up and stalling up hill only and have tried numrous float settings on the freshly rebuilt carb.(rebuilt by novice) Would mixed up vacuum lines cause this? Also you wouldnt happen to know what the all the vacumm lines coming out of the carb controll would you. I have almost all of them plugged except the one going to the electric choke.
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post #9 of 9 Old 02-15-2002, 04:32 PM Thread Starter
Bob K
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Your problem unphill does not sound like a vacuum problem. This website will tell you what all the stuff under your hood is supposed to do:
http://home.sprynet.com/~dale02/list.htm

'87 Wrangler YJ 4.2 I6 (sorry, sold)
JuiceBox ignition
2 1/2" ProComp Lift
31" BFG A/T's
K&N Filter
Custom Rock Guards
Turbo Muffler
Rear Track Bar in the shed
Other Tricks I won't tell to just anybody!

'99 Grand Cherokee 4.7 V8
Towing Package
K&N FIPK
ProComp MX6 shocks
Borla Exhaust
Tow Hooks
Alpine CD with Infinity+iPod connect
Just getting started!

If you're not living on the edge...
you're taking up too much space.
Bob K is offline  
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