using a car ignition coil

[Anonymous]

can u hook up a car's ignition coil with a distributor directly to the ignitor and the stock plugs?

[Anonymous]

Don't think so.
In theory you could, but you would need four coils; one for every cylinder. Skip the distributor, there's no distributor on a GS.
I'd get some new bike coils if I were you. Cheaper and easier to install.

[argonsagas]

Jojo is right.

Remember you have two cylinders firing at the same time on a 4-cylinder GS, and car-type coils cannot fire two plugs, only one, so you would need one coil for each cylinder, as he said.

The expense and effort of having to design a new system that would work with the GS basics, then finding/buying the parts would not be worth it.

[earlfor]

Re: using a car ignition coil

NO!!

Earl

can u hook up a car's ignition coil with a distributor directly to the ignitor and the stock plugs?

[Anonymous]

Remember you have two cylinders firing at the same time on a 4-cylinder GS,

Correct me if I'm wrong, but don't they all fire at different times? 1 and 4 are at TDC together, but they should fire 360 degrees apart. You can have 2 sets of points fire 4 cylinders separately very easilly as when 1 is on detonation - 4 should be at TDC also and at the start of the intake cycle. Igniting it would have no effect.

[Anonymous]

It's late - I guess I just said what you did - my apologies! 1 and 4 do fire at the same time.

[Anonymous]

ok well i was just wondering

[Anonymous]

Still easier and cheaper just to get the proper coils for it.

[Anonymous]

my coils arent dead, i was just curious if it would work

[Anonymous]

Give them a little funeral then order some Dyna Coils.

[Anonymous]

So basicly... the engine is a pair of linked parallel twins?
I always thought that it would fire like a 4 banger car engine. 1342


Jim

[saaz]

No reason why it would not work if you can fit two coils and split the output of each into two (as per the standard bike coils). The question is whether it is work the effort.

[Billy Ricks]

1&4 and 2&3 get fire to the plugs at the same time. This actually helps burn off any residual fuel mixture before the fill stroke. They all have individual compression strokes and firing times, but they get fire at the same time every stroke.

[focus frenzy]

So basicly... the engine is a pair of linked parallel twins?
I always thought that it would fire like a 4 banger car engine. 1342


Jim

It does, practically all automotive four cylinder engines use 180 degree cranks just like motorcycle four cylinder engines.
several car makers, during the mid 80's to the late 90's, used distributor-less ignition systems that on four cylinder engines used two dual output coils to fire all four cylinders, 1 and 4, 2 and 3.
general motors, distributor-less coils would work on our bikes, IF the resistance and power requirements are within the tolerance level of the igniter box.
that is the problem, the GM coils have a very high output, they would most likely overload the igniter and burn it out.
Gm and others have gone to individual coils for each cylinder, on the GM vortec v-8's the coils have igniters built into each coil, the ECM tells each coil when to fire and the coil triggers it's self.
that way the timing can be adjusted to each cylinder.

[Anonymous]

1&4 and 2&3 get fire to the plugs at the same time. This actually helps burn off any residual fuel mixture before the fill stroke. They all have individual compression strokes and firing times, but they get fire at the same time every stroke.

Ok... that makes a LOT more sence. Fire at top of compression stroke AND fire at top of exhaust stroke.

Jim