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Unread 03-17-2003, 02:17 PM   #1
kev1
Registered User
 
Join Date: Aug 2002
Location: Kansas
Posts: 76
258 Questions

Here is the deal.

I am doing rebuild on a 1980 CJ-7 that use to have the GM-151. The 151 was removed and I bought a 1984+ 258 that I will be putting in my Newly Built 1980 CJ7. Obviously I don't have a computer for the 258. I am putting in the HEI conversion and a Weber Carb. Both have been purchased, so please don't give me too hard of a time.

My question is this. On the intake 1984 intake manifold there seems to be some sensors or something. There is on toward the front with two wire coming from it, and there is one on the bottom with one wire coming from it, and there is one toward the firewall. What are these for and where do they go?

Also, where does the connector on the Weber Carburetor connect to?

I am sure the hot wire on the HEI goes to the ignition module.

I am planning on removing all smog components, but I might go back with a Cat. So will I still need to use the Air Pump? It seems to me that I can remove it as well.

Thanks

__________________
1980 CJ7 Rebuild:

http://www.eacci.com/framelift.gif

Frame painted with a Rough Country 2.5" lift and shocks installed.
Alot of money spent on parts that are all over including a new 258.
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Unread 03-17-2003, 04:46 PM   #2
Jeep Daddy
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1985 CJ7 
 
Join Date: Jan 2002
Posts: 1,203
This link talks about most if not all of the sensors the 258 has.

Computer controls and emissions

Good luck
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85 CJ7 4.0L/SM465/Dana300/AMC20/Dana30, MPFI,154K miles - 33" 12.5's Pro Comp MT's, one piece axles, Detroit Softlocker rear, Lock Rite front, Warn Hubs, 4.56 R&P, 4" BDS lift, Warn x8000i, Warn winch guard, Hi-Lift, Tuffy console, Four X Dr. rocker guards, Rock Hard sport cage, Kilby OBA with 1.75 gal tank and York 10.3cc compressor, Tube fenders by GenRight Offroad, Fabricated rear bumper and tire carrier.
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Unread 03-17-2003, 06:14 PM   #3
bernie
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Join Date: Mar 2002
Posts: 129
Referring to, "I am sure the hot wire on the HEI goes to the ignition module."

Everything I've read says bypass the module--
Run straight twelve volts from Ign. sw. power to the HEI.

On mine (82 CJ5, 258 w/ HEI), I cut the incoming power wire to the module, then extended it and ran it to the distributor.
(I also eliminated all the computer wiring, etc.--most wires/sensors did nothing and had been unhooked by previous owners).

This link may help with the HEI setup:

http://www.geocities.com/jeeperaz/hei.htm
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Unread 03-18-2003, 07:57 AM   #4
kev1
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Join Date: Aug 2002
Location: Kansas
Posts: 76
Jeep Daddy, thanks for the link, this helped a lot and cleared some things up in my mind.

Bernie, running the wire from the ignition switch to the HEI make a lot more since, and I think you are right. If I would just take the time to read the instructions that came with it, they would prob. have set me straight and I wouldn't be wasting everyones time.

It seems to me when I put in the HEI and the Weber, there is no longer a use for the computer since it seems like the purpose of the computer is to adjust the idle and the timing depending on air and engine temperature and altitude, when you hook that ground wire up.

Thanks both of you.
__________________
1980 CJ7 Rebuild:

http://www.eacci.com/framelift.gif

Frame painted with a Rough Country 2.5" lift and shocks installed.
Alot of money spent on parts that are all over including a new 258.
kev1 is offline   Reply With Quote
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