1984 cj7 ecu - JeepForum.com
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post #1 of 16 Old 03-07-2015, 10:41 AM Thread Starter
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1984 cj7 ecu

i have a 1984 CJ7 with a 4.2 258 i6, i want to get rid of the ECU this summer and i was wondering what the best arb and distributor to get i am thinking a HEI distributor and a weber 32/36 DGEV. since i am new to the whole wiring thing i was wondering if you guys had any input, thanks!

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post #2 of 16 Old 03-07-2015, 11:46 AM
CurtG
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DUI dizzy weber 38/38 from redline
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post #3 of 16 Old 03-07-2015, 11:56 AM
Mike Romain
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I get great performance and gas mileage (11L/100 km or 22 US mpg) from the stock Carter-Weber BBD carb with a fresh $25.00 kit in it and the stock ignition module running a distributor cap with brass terminals and an accel coil for a hotter spark using champion copper core spark plugs. It still passes the emissions sniffer too.
Here is a good link on dumping the ECU and setting the carb up properly.

https://www.jeepforum.com/forum/f8/ho.../topics/522262

Mike
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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post #4 of 16 Old 03-07-2015, 12:37 PM Thread Starter
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ive done the nutter bypass but i want to get a new distributor and carb, i was just wondering what combo of carb and distributor are the best/easiest to work with. thanks!
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post #5 of 16 Old 03-07-2015, 06:55 PM
Mike Romain
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Well, there are a bunch of folks that went Weber that have gone back to the BBD for the best performance. There is a thread here on how to try to set up a Weber, it is over 800 posts long. Your choice.

Mike
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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post #6 of 16 Old 03-07-2015, 11:14 PM
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My Weber 38 was tuned out of the box basically (sea level). I got a genuine Weber, not a knockoff.

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post #7 of 16 Old 03-08-2015, 02:28 PM
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Be very careful if you go weber 32/36 I did and got a knockoff before I knew better and it was a huge battle, I eventually gave up and got a howell TBI and I have a dui.
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post #8 of 16 Old 03-09-2015, 08:16 AM
Matt1981CJ7
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Everyone I know who has installed a genuine Weber 38 on a 258 has loved it. It's a huge improvement over the Carter BBD, IMO. The 32/36 will provide good mileage, but it's too small to provide optimal performance.

The HEI ignition does simplify the wiring a little, but mis-matching drive gears can present problems. I opted to stick with a distributor that was designed for my engine.

Matt
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post #9 of 16 Old 03-10-2015, 08:40 AM
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To Matt's point many DIZZY's have gear issues that can ruin a camshaft....ONLY D.U.I. is noted as NOT having this problem.

WEBER 38 on my jeep has been great...out of the box performance and if you want to get good gas mileage by a dam Prius....so we can laugh at you! JK...well kind of


WEBERS from redline are all real! and you get a great deal if you mention Matt from the Jeep forums to Tom .... worked for me and I was very very happy with the
price!

Curt
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post #10 of 16 Old 03-10-2015, 08:47 AM
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Just for the record, I have no special relationship with Redline, other than being a very satisfied customer.

I think Tom recognized I was a blabber-mouth, and I would be a good reference for him, so he cut me a great deal on my Weber 38. I return the favor by referring everyone I can to him.

Once you've worked with a genuine Weber 38, you'll wonder why you didn't throw your BBD in the pond years ago.

Matt
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post #11 of 16 Old 03-10-2015, 09:19 AM
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Matt when I said "Tom I was referred to you by Matt from the jeep forum and he said you would give us a good deal"... BAM done I was in and It was a SUBSTANTIAL savings to what was posted and what I saw on other retailers....so what ever you blabbed about he was good enough to give me a deal and was a great technical source!

So thanks for making a friend over at redline!

Curt
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post #12 of 16 Old 03-10-2015, 10:00 AM
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I also started with a 32/36 but it too was less than I desired and now resides on my Triumph. I ordered my 38 from Redline about 15 years ago to replace it, but didn't know the "Matt" discount.....I may have to call Tom and see if I still qualify!

Also do yourself a favor (and make Matt happy :-)) and buy the air filter adapter so you aren't stuck with the little filter. I run a 10" round, but others use the stock assembly so they can retain the tac system.

The heart of the wise inclines to the right, but the heart of the fool to the left .
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post #13 of 16 Old 03-10-2015, 10:58 AM
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Quote:
Originally Posted by 1980CJ7Project View Post
i have a 1984 CJ7 with a 4.2 258 i6, i want to get rid of the ECU this summer and i was wondering what the best arb and distributor to get i am thinking a HEI distributor and a weber 32/36 DGEV. since i am new to the whole wiring thing i was wondering if you guys had any input, thanks!
Since we all have opinions, and we like to share our experiences in an effort to be helpful.

If you are getting rid of your ECU, an actual "upgrade" is to go with the Capacitive Discharge Ignition System, MSD6AL and since they have lost their patent there are many other CDI systems, running that with the Motocraft dizzy with the 18r 13r advance plates, with the Ford 300 cid Cap, Rotor and stand, with brass terminals, along with the bolt-up Weber 38-DGES is an AWESOME set-up.

The Weber 32/36 DGEV which is often sold as the "solution" is almost large enough to work.

The Carter BBD has the 1 1/2 throttle plates along with the MC2100, and the Weber 38 has 38mm throttle plates. These are the compairable sizes that work well. Without getting into one guy says this or that. I have used and promote the Weber 38-DGES along with an actual "Ignition Upgrade" CDI, with the Team Rush (big cap and rotor w/brass).

This is an AWESOME set-up.

UPTILLNOW
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post #14 of 16 Old 03-10-2015, 11:03 AM
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If you or anyone else has not seen Matt's pictures of the Motocraft Dizzy here is what we are looking for. This is the advance that seems to work well in most all situations.

UPTILLNOW
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post #15 of 16 Old 03-28-2015, 12:33 PM Thread Starter
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i got a weber 38 off of webercarbsdirest, now i just want to know a good HEI/DUI ive been looking around and everyone seems to say to go with one that someone else says is bad. im looking to spend lie $150-$200, trying to look for a blue capped one that comes with spark plug wires from a reputable company
thanks in advance,
TUG(my jeep)
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