SPARK PLUGS FOR A 39 WC

Super Trucker · Aug 26, 2012

What plugs are used in a 39 wc? Somebody put taper fit auto plugs in.

mdtractormechanic · Aug 26, 2012

Champion J-8C (readily available)

acadam20 · Aug 26, 2012

Autolite 295 will fit and be better than a Champion.

mdtractormechanic · Aug 26, 2012

The original recommended spark plugs were the Champion J-8C, AC 45 and Autolite AN7. These plugs were in the medium heat range. The replacement plug for the AN7 is the 295 which is a hotter plug. Regardless of some people's bias for certain brands I would stay with the original heat range as is designated by the manufacture of the engine. If you find the plugs fowling due to engine wear, incrementally move to the next heat range. Be careful not to go to high as this will cause pre-ignition and could cause the tip to burn off which in turn will damage the engine.

myallis · Aug 26, 2012

ac delco r45 or r43

chalmersbob(Pa) · Aug 26, 2012

Champion J8 or the hotter J11.
Champion seem to work the best in my Allis's
LOL Bob

SPARK PLUGS FOR A 39 WC

Super Trucker

Member

mdtractormechanic

Member

acadam20

Member

mdtractormechanic

Member

myallis

Member

chalmersbob(Pa)

Member

Similar threads