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Hotter Spark Plug for 1953 FARMALL SUPER 'H'

G

Good Dog

Member
I have a FARMALL SUPER 'H' that uses a small amout of oil in the engine and it is fouling my spark plugs. Can someone advise me of a hotter spark plug than the one that is recommended for the 123 cu. in. engine. Thanks
 
(quoted from post at 03:28:40 04/12/10) I have a FARMALL SUPER 'H' that uses a small amout of oil in the engine and it is fouling my spark plugs. Can someone advise me of a hotter spark plug than the one that is recommended for the 123 cu. in. engine. Thanks
Click to expand...

Autolite 388. Incidently, a Super H has 164 cubic inches of displacement.
 
As mentioned an Autolite 388 is hotter then the 386 but a 3116 is similar in heat range but a NON RESISTOR PLUG. Other things to reduce oil fouling are to use shutters or curtains thermostats etc to keep the temp up to 180 and over,,,,,,,,dont run the carb any richer then necessary,,,,,,,,avoid long idle periods,,,,,,,,use wire core plug wires,,,,,,,keep the ignition well tuned. I believe Champion (UD designation???) makes some of the spark intensifier plugs that have the extra added artificial gap for severe oil burner tractors.

John T
 
Joe,
As I have said many times on this forum, I have used the Delco C87 in all my older tractors for many years with no fouling.
But aside from what plug you decide on, John T has an excellent point about not running over rich mixture. Get the tractor up to good high operating temp then set the mixture as recommended.
Also keep the electronic connections, "Bright and Tight", for best firing of the plugs.
Dell
 
Champion goes from cold to hot, D16Y, D18Y, D21, and D23. All 18MM with 1/2" reach.

Equivalent in AC-Delco: D21 = C88. D23 (hottest) = C88L

You can buy anti-oil-foul adapters that might help more then hotter plugs. But if you valve-guides are leaking badly, probably nothing will stop the fouling.
 
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