Spark plug failure on 400

chuck machinist

Well-known Member
I retapped number three cylinder on my 400 Racine and as I remove the tap a chip popped off the land area where the plug gasket seats. I machine a soft iron gasket to place on the land area along with the spark plug crush gasket. No blow by. Barley pops all around
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These guys will likely have anything you need for bushings and if not will make what ever you need. They do have a $20.00 minimum tho. They are not far from my house, so if you want I can go by and get what you need and send it to you. I'll be getting some for my 1030 front anyway, so that will cover the minimum too.
Reliable bronze
 
Were not plugs setback to minimize fouling? The soft iron gasket was .040 thousands thick. I have nothing to back that up other than I heard it on the internet. And it has to be true if it is on the internet. Right?
 
Yes indeed, Antifoulers in 14 MM and 18MM are available from any auto parts store, I have seen articles where they can be used to space oxygen sensors out to cheat the CE light. Youtube has videos on that subject.
 

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