What should the spark plug gap be on an antique tractor?
For magneto set point gap to .015 – Spark occurs when dot or “LH-Impulse” aligns with index on cover or case. For point gap, for LP set TDC. For point gap, for LP set TDC. For spark, LP set at 11 deg. For spark plug gap, LPG set at .030 For spark, LPG set at 8 deg.
When did GM change spark plug gap to.045?
Back in 1975 when GM started using HEI, they wanted plug gaps set at .060 till they found out it was hard on caps and rotors, as mentioned. They then changed their specs to .045. So as mentioned, .040-.045 is right on the money.
What should LPG be for spark plug gap?
For spark plug gap, LPG set at .030 for spark, LPG set at 7 deg. For spark plug gap, LPG set at .030 Data collected from an old Niehoff tune-up chart. We sell tractor parts!
What does it mean to have a plug gap?
Plug gap is a balance between available spark and cylinder pressure. The wider the gap, the bigger the spark the better it runs, more power, more economy. But there is a limit. Points ignition can only handle so much. .030 or so. That leaves a little room for the plugs to erode and still fire away.
Back in 1975 when GM started using HEI, they wanted plug gaps set at .060 till they found out it was hard on caps and rotors, as mentioned. They then changed their specs to .045. So as mentioned, .040-.045 is right on the money.
What kind of spark plug do I need for a 302 Mustang?
I was wondering what was the best spark plug i should go with and the size gapping on my car. Its a stock 302 with e7 heads, carburated, e-cam, long tube headers, x-pipe, holley 650 d.p., MSD 6-AL box, 16* timing, and the cam gear is advanced.
Where is the spark plug gap on a spark plug?
Spark Plug Gap – understanding the basics. Spark plug gap is where spark plug spark discharge is designed to take place. On a conventional spark plug, it is the area between the center and the ground electrode.
Plug gap is a balance between available spark and cylinder pressure. The wider the gap, the bigger the spark the better it runs, more power, more economy. But there is a limit. Points ignition can only handle so much. .030 or so. That leaves a little room for the plugs to erode and still fire away.