4agze ignition options

[tak209]

so my car started sputtering on right turns only and after many diagnostic tests i recently found out it was the coil causing the problem which is a new one from kragen. if you sit the coil straight up it doesnt do it. so i decided that i need to upgrade my ignition. i was planing on going with solid state msd set up but wanted to get some other opinions. the unit i was planing on getting was the msd 6201 digital with a ss blaster 8207.... any other ideas?

[tak209]

so i decided to be cheap and went to a solid state off a rx7 fc lol works great.

[jondee86]

Came across this answer in another forum... a guy was asking which one
out of a lineup of four fancy high output coils would be the best for him...

Look here's the deal. Back in the day of conventional ignition systems coils
came in two flavors, ones that were designed for an external ballast resistor,
and those that had the ballast resistor built in. The ballast resistor was there
to limit the current to the points so that they had a chance to last 12,000 miles.
So what's the deal with high performance coils?
Well if we were to put your '66 Muchwang on an ignition scope we would see
that the secondary voltage is about 9-11KV at idle. If we then screw one of
these super coils on the car and re-scope it. What do you think we will see
for secondary voltage at idle? If you guessed 45KV you would be wrong. If you
guesses 9-11KV you would be right. Why is that? The coil is only going to
produce enough voltage to ionize the gap in the spark plug. No more.
Now under some other conditions the coil will need to produce more voltage
(typically during a hard acceleration) but very rarely will a coil need to produce
more than 20KV on a conventional system.

So yeah... you saved yourself some coin by not buying that "racing" coil. There
is no need for anything better than a factory coil, unless you have some serious
modifications going on... like a 30psi turbo build

Cheers... jondee86

[Nick94tt]

There is no need for anything better than a factory coil, unless you have some serious
modifications going on... like a 30psi turbo build

Cheers... jondee86

I still run Champion copper plugs (45k later) in my other car with boost. Every other oil change I pull, clean, and re-gap. Helluva lot better than $10 a plug that you can't touch without ruining.

There was however a need for something better than the factory fuel, so alcohol injection was added.

[tak209]

yea thats what i figured also. i thought its worth a shot since coils are only 12 bucks at pick n pull lol i bought a camry one and it worked just not well so i took it out and got a fc coil and the thing runs like a dream. now i just gotta figure out why it dies at free rev =P lol