Ohms per. Ft. Vs. Spark Output ?
Racer
Joined: Feb 2002
Posts: 455
Likes: 0
From: Fraser MI
Re: Ohms per. Ft. Vs. Spark Output ? (CAJUN C4)
i think lower resistance would give greater current through the wires for a given voltage (V = I*R)...so better spark? but with the lower current you would also have a greater chance for emi...this is just pretty much a guess, anyone know if i am right?
Racer
Joined: Sep 2002
Posts: 317
Likes: 1
From: Maple Valley WA
Re: Ohms per. Ft. Vs. Spark Output ? (konroh)
That's exactly right. I just installed a set of the MSD 8.5 last night and they claim they can produce a 50 ohm/foot wire with less EMI because of special windings and insulators in the wire. All I know is there's a noticeably crisper throttle response and smoother acceleration now. :cool:
Jay
Jay
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Re: Ohms per. Ft. Vs. Spark Output ? (CAJUN C4)
The difference in spark output between 50 and 500 ohm per foot plug wire is insignificant because the spark coil secondary resistance makes up the largest part of the path resistance. The percent increase in resistance due to the plug wires is very small and has very little effect on the total circuit resistance and therefore has very little effect on the spark current.
