Re: need pertronix input from usersAGAIN

Posted by John T on February 21, 2009 at 07:17:15 from (71.55.26.69):

In Reply to: need pertronix input from users posted by i bleed IH red on February 21, 2009 at 06:43:07:

This is one of those type question youre apt to get varied opinions on, so I will JUMP RIGHT IN AND kick it off with an engineers perspective.

1) To get all the benefits that improved elec switch has to offer n get the most "bang for the buck" I recommend (versus the old stock coil) a matching high energy high voltage coil such as their flame thrower series BE SURE N LET PERTRONIX MATCH THE COIL FOR THE SWITCH as some coils may draw more current n require a higher current rated switch.

2) If you run the elec switch and a high energy high voltage coil, Id widen the stock plug gap to more like at least 0.035 to 0.045 or even a bit more. With the higher energy ignition and wider plug gap you end up with a wider hotter fatter spark which discharges more energy (volts x amps x time) across the plug gap then a stock ignition...THATS JUST PHYSICS

3) Since youre running at a higher firing voltage if you widen the plug gap, you need good quality plug wires and a good clean dirt n oil n moisture n crack free distributor cap. Go with what Pertronix recommends which may be 7 or 7.5 mm etc wires but too big of a wire (8mm) might not fit just right in a stock cap CHECK WITH PERTRONIX

DISCLAIMERS:::::

From an engineers standpoint I wouldnt expect much more if any net HP gain BUTTTTTTTT I would expect better starting and idle performance versus the stock ignition

DO NOT wire it at the wrong polarity you will let the smoke out grrrrrrrrrrrr

Use a good heavy duty battery and 00 gauge battery n starter n ground cables (regardless of any ignition on a 6 volt system) cuz if shes hard to crank n the battery voltage drops drastically the elec ignition may not perform correct

DRAWBACKS a) IF the old points burn you can file them n probably get back to the shop butttttttttt if the elec switch stops YOURE SCREWED b) The elec switch costs more

ADVANTAGES Better starts n idle,,,,,,no points or condensor problems,,,,,more spark gap energy (volts x amps x time) across a wider plug gap is available for that wider hotter fatter spark AGAIN those are the laws of physics IM NOT SAYING THATS NECESSARILY BETTER its just a fact

Your tractor youre choice, best wishes BE SURE N LET PERTRONIX MATCH THE COIL N SWITCH FOR YOUR GROUND AND CURRENT RATINGS ETC

John T Tooooooo long retired engineer in Indiana

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