Posted by Steve@Advance on February 21, 2021 at 06:39:14 from (66.169.147.211):
In Reply to: points and condensers posted by Al Nickel on February 21, 2021 at 05:06:17:
Yes, the ignition components, and voltage regulators are of very poor quality.
But for even good points to last, everything must be right.
Point gap is critical! If the distributor is worn, any side play in the shaft, they will not stay set. Improperly set or the gap varying from the worn bushings, will dramatically shorten point life, and cause performance problems.
Also sometimes a worn engine, combined with a worn distributor will allow engine oil vapors to enter the cap area, coating the points with a micro mist of oil.
This is where electronic conversion kits work well. They don't care is the shaft has a little wear, or if it is oily inside. They do require the centrifugal advance to work though.
When installing the electronic kit, it is a good practice to remove the distributor, disassemble, inspect, and lube everything. All the kit does is eliminate the points, it does not solve any other preexisting ignition problems.
One other thing that is very critical, that it have the correct coil or coil/resistor combination. Many times the wrong coil gets installed. For a 12v system the coil needs to have about 3 ohms resistance across the primary terminals out of circuit. This can be accomplished with a true 12v coil or a 6v (1.5 ohm) plus a ballast resistor (1.5 ohm) which added together gives the desired 3 ohms.
Get it wrong, and the new electronic kit will burn up, or it will have weak spark and be hard to start and run poorly.
Never trust what coil they sell you over the counter. Many times the counter person is clueless, or the coil has been reboxed incorrectly. Always double check buy the part number on the coil itself or check it with an ohm meter.
High performance, high voltage coils are of no use for a low RPM tractor engine. It will work, but a waste of money.
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