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Old 06-24-2007, 12:19 PM
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76 j10 ignition

I was wondering if someone could tell me everything i would need to convert my ignition to msd. (everythingthing there is to msd) thanx. And is it worth it?

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Old 06-24-2007, 02:22 PM
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IMHO, no, it's not worth it. The 76 FSJs have Ford DuraSpark ignition. For what you'd pay for the new cap, coil, MSD box, you can get a drop in, one wire hook up HEI from Z&M Jeeps (Zach's a cool guy), ProForm, and Mallory has a deal on thier 85 series on summit for less than $200 ready to drop in. Davison Unified Ignition (D.U.I.) also has them for closer to $300.

Pertronix makes lots of upgrades for the Duraspark ignition also, but in my experience, the HEI conversion gives you the most bang for your buck. Good luck!
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Old 06-24-2007, 02:32 PM
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Doc here,

It depends on what you are going to do with the vehicle...

If your going to use it to get a loaf of bread and a 1/2 gallon of milk and some brewski's..The only gains will be at the pump..

If your doing some serious street/Strip racing, It will perform much better over and above Stock RPM limits...It will burn More Fuel Efficiently than a stocker can.

As for Choice, again that's predicated on it purpose..you can go from mild to wild..(It also depends on your budget). You need to plan for your application.

For a Basic Street System, You would need..The MSD 6a Brain box, An MSD high output Coil, (a Tach adapter May be required), An MSD conversion kit, (from stock to MSD module and pickup) OR a complete MSD Distributer. GOOD Quality 8.5 MM Spiral Core wires, Good Quality Plugs , gapped at around 42 Thousands.

Equally as important as the upgrade kit, and most guys overlook, Is the Ignition power wire needs to be upgraded from the stock 14 gauge to a hefty 10 gauge wire...

A stock coil Primary winding under Full load, Will pull around 22 Amps..(perfectly fine for a 14 gauge wire) BUT a performance coil, under full load, will pull up to 48 amps..(not good for a 14 gauge wire!)

That stock wire will get hot, this is Current doing NO useful work..except Converting energy to heat. The End user Device (The coil) Will become Current swamped..(under powered) and your $600 Performance Ignition will perform WORSE than Stock.

The EASY upgrade is with using a relay, Cut the stock wire and connect it to the relay coil, (Usually #85 terminal) the other side of the coil to a properly bonded ground. (Usually #86 Terminal) When the key is turned on, the Relay will energize and go "Click"..

Next run a Fuse Link or Maxi Fuse from the battery, to a 10 Gauge wire, and that wire to the NORMALLY OPEN contact on the relay (usually #87 terminal on a bosh relay)

Lastly, Run a 10 Gauge wire From the Relay (usually #30 Terminal on a bosh relay) To the Ignition coil, ballast (if specifically required for that model MSD), and Brain Box (unless external 8 Gauge wires are provided from the box, then those go to the battery direct, and in some cases will have BOTH)

That's It! You'll have a RESPECTABLE Street Performance system..

Proper Tuning , Of Course , Is mandatory..

Doc
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Old 06-24-2007, 03:19 PM
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j10 ignition

I checked out the HEI from z&m jeeps and looks great, but is the one wire the wire you run to the coil?
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Old 06-24-2007, 05:24 PM
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Quote:
Originally Posted by jbonez
I checked out the HEI from z&m jeeps and looks great, but is the one wire the wire you run to the coil?
Doc here,

If it is a stock type large cap HEI, then yes..actually there should be two terminals, one for BATT one for TACH . Should be marked on the HEI. That is the wire you'll want to upgrade also..



THE RED wire is the BATT terminal (the upgrade)

THE WHITE wire is TACH pickoff..

THE BLACK wire is ground and usually does not go to the front two terminals..it usually goes back down through the dizzy on the rear plug.

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Last edited by docvette; 06-24-2007 at 05:29 PM.
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