Re: 1939 Sea King / Thor barrel test

[joesnuffy]

I looked up the autolite 3116 heat range and it was a 5 . That should be middle of the road heat range I would think combine that with the cold water you were using I would think the motor would have ran cooler on the rear of cylinder. I can’t help but wonder if their is a restriction of flow of water or if it might pump more when mounted on an actual boat. Just a thinking out load.

https://www.sparkplugs.com/product.aspx?zpid=7748

When I have used hotter spark plugs they normally get pretty hot to the touch of the base of them fairly quickly like 1 minute I can tell when their a hot plug using my finger on the base of plug. Sometimes it also lets me know when a plug isn’t firing as it should after like a minute or 2 I feel the plug bases to see how they compare to one-another.

Joe

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