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Search took 0.00 seconds. Search: Posts Made By: 40 Deluxe
Forum: Model A (1928-31) 02-13-2018, 10:25 PM
Replies: 53
Views: 12,085
Posted By 40 Deluxe
Re: Replacement Ignition Coil

OK, did my idle test this afternoon. I did it on my '40 Ford, all stock with the exception of a remote coil adapter on the original helmet distributor. The coil is a 6 volt 1.5 ohm Echlin of...
Forum: Model A (1928-31) 02-13-2018, 03:12 PM
Replies: 53
Views: 12,085
Posted By 40 Deluxe
Re: Replacement Ignition Coil

Well, I don't see how a new coil would fire any sooner. Electrical current would travel at the same speed in either coil. If anything, a performance coil likely has more turns of wire around the...
Forum: Model A (1928-31) 02-13-2018, 03:07 PM
Replies: 53
Views: 12,085
Posted By 40 Deluxe
Re: Replacement Ignition Coil

One point not addressed in that article is the great variation in secondary voltage output. As the primary field collapses and induces secondary voltage, secondary voltage only rises to the amount...
Forum: Model A (1928-31) 02-13-2018, 12:05 PM
Replies: 53
Views: 12,085
Posted By 40 Deluxe
Re: Replacement Ignition Coil

No, just trying to comprehend why a coil with higher voltage potential would increase idle speed when that higher potential is not being used; when both an original coil and a performance coil are...
Forum: Model A (1928-31) 02-13-2018, 11:16 AM
Replies: 53
Views: 12,085
Posted By 40 Deluxe
Re: Replacement Ignition Coil

Gustafson, I don't have a dyno so can only do the idle test. I agree with you on the timing change possibility. That, or the original coil (or condenser) was weak.
Forum: Model A (1928-31) 02-13-2018, 02:44 AM
Replies: 53
Views: 12,085
Posted By 40 Deluxe
Re: Replacement Ignition Coil

Now you've got my curiosity up! How much was the increase in idle RPM? I need to do some experimenting to see if I can duplicate your results.
Forum: Model A (1928-31) 02-11-2018, 09:08 PM
Replies: 53
Views: 12,085
Posted By 40 Deluxe
Re: Replacement Ignition Coil

The increase in idle speed was from opening the plug gap to .035". The increased gap allows for more fuel molecules to be available to be ignited by the spark, so idle speed increases (and emissions...
Forum: Model A (1928-31) 02-11-2018, 12:12 AM
Replies: 53
Views: 12,085
Posted By 40 Deluxe
Re: Replacement Ignition Coil

Answer: It depends!......Depends on how much voltage is needed to jump the plug gap. If only 5,000 volts will fire the plug, that is all the coil will put out. Even if you have a double super...
Showing results 1 to 8 of 8

 
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