Re: [DML] MSD pros and cons

[kayoong@xxxx]

Mike,


Hi. This is Kayo, again.
Modifications? None. Twenty-five minute job. No modification to the 
original wire harness is necessary at all. All you have to do is unplug the 
two wires that are on the Bosch coil, next remove the two hold down nuts on 
bracket which is holding the coil to the firewall. 

Visually look at the Bosch coil. Look at the "shape" of the fittings and the 
markings on the coil which is marked negative (-) and positive (+) terminal, 
before removing the fittings. The fittings are different. The shape of 
these original fittings on the coils are made with a male and female fit and 
the wires in the car's harness plugs are respectively and complementary to 
these fittings. You really can't make a mistake on re fitting the wires 
plugs.

Remove and reused the original fittings from the original Bosch coil. These 
fittings are held down with hex nuts. The fittings are made of brass. Clean 
them if they are tarnish or slightly corroded. Replace them, if they are in 
poor shape. Transfer them to the MSD coil with the positive fitting to the 
positive side and negative fitting to the negative side. Both the Bosch and 
the MSD coils are marked ( - ) and ( + ). Use the new hex nut supplied 
with the MSD coil to secure these fittings. Do not over tighten or you may 
pull or brake the terminal and its housing. 

Reused the old bracket from the Bosch coil or you can get a new bracket and 
install it on the MSD coil. Do not over tighten the screw that clamps the 
coil on the bracket. You can deform the coil housing and create a leakage. 
Most ignition coils are generally fill with oil and the MSD and the Bosch 
uses oil. (The oil is for cooling and insulation. Leaking coil will result 
in a poor and or erratic ignition performance.) 

Then mount the MSD coil back on the firewall and refitting the wire harness 
plugs onto the MSD coil (use dielectric grease on the terminal). Double 
check everything, then start the car up and enjoy the difference. 

The cheapest way for more performance and driving thrills, and if you don't 
like its performance -- reinstall the Bosch coil. Nothing to lose except $50 
and 1/2 hour of time.

Kayo
#5508
Lic. 9D NY