Dual points for performance?

Make it go fast! Kick it up a notch. Post tips in here.
So Cal Mark

Re: Dual points for performance?

Post by So Cal Mark »

period correct performance ignition. If you're going to stick with points, at least it's optimized somewhat. Still limited to the max output the coil has
User avatar
bradartigue
Posts: 2183
Joined: Thu Sep 20, 2007 2:35 pm
Your car is a: 1970 Sport Spider
Location: Atlanta, GA

Re: Dual points for performance?

Post by bradartigue »

KenWells wrote:
bradartigue wrote:
So Cal Mark wrote:the alfa system is something completely different, dual points overlapping will create a hotter spark but don't expect miracles. The coil is still a limiting factor. I haven't seen any studies on whether coil life is shortened due to running them closer to maximum output all of the time. And of course, points begin wearing as soon as the distributor starts turning, so they are the least accurate method of controlling spark output
Seems pointless (no pun intended) since electronic systems will achieve and exceed the desired result. This just sounds like an opportunity to either burn up your tach, shock the piss out of yourself, or eat coils up frequently.
Thanks for responding, I didn't shock myself and my tach still works perfectly. When my coil fries I'll let you know. :D

(one in every crowd) :wink:
Curious to know if it makes any difference at all. I'd pull those plugs in a few miles to see how well or poorly it is burning fuel. You don't want the long duration spark to create a lean running motor, you can drop valves that way. If it is a little lean just tune the carb.
TimpanogosSlim
Posts: 237
Joined: Wed Feb 06, 2013 12:45 pm
Your car is a: 1977 124 Spider

Re: Dual points for performance?

Post by TimpanogosSlim »

Huh, that was ever a thing?

No reason it wouldn't work, but wouldn't the 2nd spark be kinda small?

My understanding of electronic multi-spark systems is that they are only effective at low RPM. I don't see how this wouldn't be limited by the same factors.
User avatar
bradartigue
Posts: 2183
Joined: Thu Sep 20, 2007 2:35 pm
Your car is a: 1970 Sport Spider
Location: Atlanta, GA

Re: Dual points for performance?

Post by bradartigue »

TimpanogosSlim wrote:Huh, that was ever a thing?

No reason it wouldn't work, but wouldn't the 2nd spark be kinda small?

My understanding of electronic multi-spark systems is that they are only effective at low RPM. I don't see how this wouldn't be limited by the same factors.
Alfa Twin Sparks? Absolutely. They had eight plugs and a distributor with eight fittings:

Image

Image
TimpanogosSlim
Posts: 237
Joined: Wed Feb 06, 2013 12:45 pm
Your car is a: 1977 124 Spider

Re: Dual points for performance?

Post by TimpanogosSlim »

bradartigue wrote:
TimpanogosSlim wrote:Huh, that was ever a thing?

No reason it wouldn't work, but wouldn't the 2nd spark be kinda small?

My understanding of electronic multi-spark systems is that they are only effective at low RPM. I don't see how this wouldn't be limited by the same factors.
Alfa Twin Sparks? Absolutely. They had eight plugs and a distributor with eight fittings:
No i know that twin spark is and continues to be a thing.

i meant using both sides of a dual point ignition in parallel.
So Cal Mark

Re: Dual points for performance?

Post by So Cal Mark »

dual points don't provide dual spark, just one
Post Reply