Re: '65 40hp dropping lower cylinder
Lawn mower shop or marine shop by the foot. Some NAPAs will have metal core wire. You have to use 7mm wire for it to fit in the coils. I think 4' will cover it for a Big Twin.<br /><br />It really suprised me that the .5k or so of the carbon wires really did affect spark. Until I did a little reading up on the details of spark ignition. It turns out that most of the energy is transferred to the gas after the arc is established and the voltage across the arc drops to something about 100v. The wires eat up so much of that energy that misfires at part throttle are <br />a real problem.<br /><br />One of my engines, I'm embarrased to say, has a couple tubes of heat shrink shrunk over one of it's wires. It's been like that for two years now.
<br /><br />Check the flywheel for signs of cracking around the hub and clean the hub & crankshaft with acetone (or whatever degreaser you have) before you re-assemble. Torque the flywheel nut to 50 lbs or so to exorcize (sp?!?) the torque wrench before going to 105.
Lawn mower shop or marine shop by the foot. Some NAPAs will have metal core wire. You have to use 7mm wire for it to fit in the coils. I think 4' will cover it for a Big Twin.<br /><br />It really suprised me that the .5k or so of the carbon wires really did affect spark. Until I did a little reading up on the details of spark ignition. It turns out that most of the energy is transferred to the gas after the arc is established and the voltage across the arc drops to something about 100v. The wires eat up so much of that energy that misfires at part throttle are <br />a real problem.<br /><br />One of my engines, I'm embarrased to say, has a couple tubes of heat shrink shrunk over one of it's wires. It's been like that for two years now.
<br /><br />Check the flywheel for signs of cracking around the hub and clean the hub & crankshaft with acetone (or whatever degreaser you have) before you re-assemble. Torque the flywheel nut to 50 lbs or so to exorcize (sp?!?) the torque wrench before going to 105.