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-   -   Cap & Rotor Upgrade For 4.0 Liter Guys (https://forums.off-road.com/jeep-short-wheelbase/109867-cap-rotor-upgrade-4-0-liter-guys.html)

Junk Yard Genius 03-02-2002 03:10 PM

Cap & Rotor Upgrade For 4.0 Liter Guys
 
You know, I don't know why I didn't look at that picture of Dorfs sooner...

Here is your upgrade for the 4.0 Liter...

That's the distributor cap adaptor, distributor cap, and rotor used on the E.E.C. distributors from Ford

Try an '89 Ford Truck With 300 CID I-6 WITH E.E.C. for the Cap Adaptor & Cap,
Try an '89 Ford Truck With 302 CID V-8 WITH E.E.C. for the Rotor.

Hats off to Dorfs for posting the picture!
(credit where credit is due!)
http://bbs.off-road.com/wwwthreads_u...3875-dales.jpg

So many cats, so few recipes...

tazman85305 03-02-2002 06:20 PM

Re: Cap & Rotor Upgrade For 4.0 Liter Guys
 
What would the advantages be for doing this upgrade?

http://bbs.off-road.com/wwwthreads_u...57-sigpic2.JPG
[b]IF IT'S NOT DIRTY, YOU'RE DOIN' IT WRONG

Andytron 03-02-2002 06:30 PM

Re: Cap & Rotor Upgrade For 4.0 Liter Guys
 
TR, thats still the wrong cap adapter acording to the parts guy. Acording to STANDARD the cap adapter is the same from 79-94 (Wells P/N F-960?)for the 300 I6. So the search is still on for the correct cap adapter. And I thought it was finnaly laid to rest. The quest continues.

"Every form of refuge has it's price."

glennCJ7 03-02-2002 06:31 PM

Re: Cap & Rotor Upgrade For 4.0 Liter Guys
 
Now it's posted !!! Ten days ago I bought a premium cap and rotor for my new stroker. Just go to show you should never do anything too quickly;-).

Glenn

Build what I can, buy only what I must.[img]/wwwthreads_images/icons/crazy.gif[/img]
82CJ7 Rebuilding again.

sloop 03-02-2002 07:15 PM

Re: Cap & Rotor Upgrade For 4.0 Liter Guys
 
What I don't understand is... why don't these engines come with larger caps from the factory? I guess any cap-size-related problems were eliminated when they went to distributorless ignition (was that 2000?)


Mark

**DONOTDELETE** 03-02-2002 10:20 PM

Re: Cap & Rotor Upgrade For 4.0 Liter Guys
 
Andytron your parts guy doesn't know what he's talking about. As you noted his book says the cap adapter is the same from '79-94. That is correct. Notice that TR said '89. Last time I checked '89 fit within '79-94. If anybody knows it's TR. You should believe him before your parts guy.

'75 CJ5 with goodies
'63 CJ6 rolling chassis and body only

Andytron 03-02-2002 11:32 PM

Re: Cap & Rotor Upgrade For 4.0 Liter Guys
 
Snowtow, I looked at the part in person that the book called for 'tween 79-94. It won't fit. It's differant than the one for the TR upgrade on the 258 which is what the 79-94 adapter fits. The one I was shown at two places was differant than the one in the above photo. Does this make more sense? I do realise that TR knows what he's talking about. But,I believe he said try an 89 not an 89 is the correct part.

"Every form of refuge has it's price."

**DONOTDELETE** 03-03-2002 10:35 AM

Re: Cap & Rotor Upgrade For 4.0 Liter Guys
 
There are two types of cap adapters in that range of years. One has clips that hold it to the distributor and one screws in. The one for the 4.2 is the clip type and the one for the 4.0 is the screw type. If you look for the exact one TR mentioned it will work. It has to be from an EEC IV engine which basically is the engine control system.

'75 CJ5 with goodies
'63 CJ6 rolling chassis and body only

Junk Yard Genius 03-03-2002 10:49 AM

Re: Cap & Rotor Upgrade For 4.0 Liter Guys
 
SnowTow hit the head on the nail (or is that the other way around?[img]/wwwthreads_images/icons/blush.gif[/img])
<hr>
'WITH E.E.C.' wasn't put in there because my keyboard malfunctioned...

Without E.E.C. gets you the cap adaptor, cap and rotor for the 'old style' Motorcraft distributor with vacuum advance.

WITH E.E.C. gets you the cap adaptor, cap and rotor for the 'New Style' distributor WITHOUT VACUUM ADVANCE

The E.E.C. ignition cap adaptor and cap is even larger diameter than the DuraSpark ignition cap (Tribute to the E-core coil I assume).
<hr>
YOU WILL have to beat the average parts counter guy in the head with a claw hammer to get your point across....

So many cats, so few recipes...

Andytron 03-03-2002 12:44 PM

Re: Cap & Rotor Upgrade For 4.0 Liter Guys
 
I have been trying TR. They refuse to believe that there is more than one cap adapter in that year range. Which is a PITA as I have never had a problem with this parts place before. I will try again though. I'll head back over to my local NAPA in a few minutes. Snowtow, the one I looked at did have screws but was incorrect.

"Every form of refuge has it's price."


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