84 300 I6 timing
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New User
Joined: Dec 2001
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84 300 I6 timing
This truck has the Dura spark III ignition with elctronic control for the spark advanve. When I am watching the timing mark with a timing light, the spark retards when the engine is reved, not advance. This seems wrong to me. some of the emmisions controls have been removed, not sure exactly what. I think i would like to switch distributors to one with vacuum advance but need help with the wiring conversion. Anyone with any ideas? Thanks Jim
New User
Joined: Jan 2008
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Likes: 24
84 300 I6 timing
Wiring Diagram for what:
The Duraspark II system ?
Duraspark III ?
Standard ignition ?
Dennis
First Came the Chicken,
Then Came the Egg,
Or Was It the Other Way Around?
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
The Duraspark II system ?
Duraspark III ?
Standard ignition ?
Dennis
First Came the Chicken,
Then Came the Egg,
Or Was It the Other Way Around?
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
Senior User
Joined: Sep 2001
Posts: 210
Likes: 2
From: Lincoln, Rhode Island
84 300 I6 timing
MSD does make one for the 300 I-6 actually it is the same as a v-8 just set the switch to 6 cyl. and your off. Be carfull about switching things because that truck has a feedback carb and messing with the distributor will cause the computer not to control the carb right and the truck will run horrible if you are going to change the ignition system then you must get a non feedback carb. Summit or Jegs can set you up with what you need
400m
85' bronco II
86' (400 edelbrock power pack., 6" lift, 4 speed)
400m
85' bronco II
86' (400 edelbrock power pack., 6" lift, 4 speed)
Posting Guru
Joined: Jun 1999
Posts: 1,100
Likes: 0
From: Durham
84 300 I6 timing
Yeah the MSD ignition box will work, but they don't make a distributor for the I-6.
Slik
Slik
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Fleet Owner
Joined: Aug 2001
Posts: 29,941
Likes: 46
From: Drummonds, TN USA
84 300 I6 timing
Good Christ, man! Do you own a GOLD MINE????
Look, do this, and you'll save a lot of cash besides simplifying your world -
You can get a brand new Duraspark II distributor, coil, plug wire set, and control box at any parts store for around $100.oo US even.
I know, because I went with platinum plugs and the above, plus a cap and rotor for the 302 I'm dropping into my 82 for right about $115 and some change. The plug gap is .60 I think, so it's a high energy system. It's made FOR the truck, and clean when you get it so you can paint it to match your E-Compartment paint scheme (if you have one).
Been there, dunnit, got the T-Shirt!!!
~Wolf
Look, do this, and you'll save a lot of cash besides simplifying your world -
You can get a brand new Duraspark II distributor, coil, plug wire set, and control box at any parts store for around $100.oo US even.
I know, because I went with platinum plugs and the above, plus a cap and rotor for the 302 I'm dropping into my 82 for right about $115 and some change. The plug gap is .60 I think, so it's a high energy system. It's made FOR the truck, and clean when you get it so you can paint it to match your E-Compartment paint scheme (if you have one).
Been there, dunnit, got the T-Shirt!!!
~Wolf
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Posting Guru
Joined: Jun 1999
Posts: 1,100
Likes: 0
From: Durham
84 300 I6 timing
"Gold Mine"---Depends on what it is worth when you're stopped dead on the road. The MotorCraft Dizzys are (IMHO) garbage...went through two in six months...the first one was never quite right and then it finally quit altogether...for another $50 or less you can have the same setup above with an MSD 6A and it will eliminate a ton of problems and give you some kick to boot.
Slik
Slik
Fleet Owner
Joined: Aug 2001
Posts: 29,941
Likes: 46
From: Drummonds, TN USA
84 300 I6 timing
Last time I looked, the 'strib I wanted for mine would have run me about 500 bucks before it was all over with....
But I suppose it depends on what you want.
Bullet-proof parts have a steep price tag
But I suppose it depends on what you want.
Bullet-proof parts have a steep price tag
Posting Guru
Joined: Jun 1999
Posts: 1,100
Likes: 0
From: Durham
84 300 I6 timing
$500 is what they list for with MSD, but you can buy them new from Summit or Jegs for under $200. My ignition system cost me about $500 for the MSD Dizzy (w/vacuum), MSD 6A, MSD 8.5 wires, MSD Blaster Coil, MSD adjustable timer, and MSD capacitor; but I kind of had to shop around before I got all the pieces.
Slik
Slik
84 300 I6 timing
