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w3grant 
Bronze Level
Joined: 08 May 2025
Location: Ipswich
Points: 2
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 Topic: G spark plug
Posted: 19 hours 56 minutes ago at 6:49pm |
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I’m working on an Allice Chalmer G and three of the spark plugs are threaded directly into the head and one a spark plugs has a threaded spacer on it I have seen some pictures with them on it and some with them not are they needed and if they’re not needed what plug do I run?
Thanks Warren
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steve(ill)
Orange Level Access
Joined: 11 Sep 2009
Location: illinois
Points: 86574
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Posted: 18 hours 51 minutes ago at 7:54pm |
normally the spacer is added for one of two reasons...
possibly .... Original threads in the head are bad so they loctite in a spacer permanent. then put the plug in it...
the MAIN REASON .....If the engine burns oil and fouls a spark plug, putting the spacer in , moves the plug out slightly and may keep it from fouling as often.. possibly never. |
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Like them all, but love the "B"s.
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JoeM(GA)
Orange Level
Joined: 12 Sep 2009
Location: Cumming,GA
Points: 4782
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Posted: 18 hours 13 minutes ago at 8:32pm |
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Autolite 295 for the plug, you can use a 303 if you feel the need for a hotter plug
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Allis Express North Georgia
41 WC,48 UC Cane,7-G's,
Ford 345C TLB
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11965
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Posted: 8 hours 46 minutes ago at 5:59am |
Turn that around Joe. The 295 is hotter than the 303. Go by the last digit for the heat range in Autolite. Obviously, 5 is higher than 3 so 5 being the hotter heat range. Your right in your assumption, hotter in a worn engine or oil control issue. As Stevo said, one of the two is probably the issue. Bad threads or bad rings in that one cylinder... Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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JoeM(GA)
Orange Level
Joined: 12 Sep 2009
Location: Cumming,GA
Points: 4782
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Posted: 7 hours 43 minutes ago at 7:02am |
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LOL!, correct as always Steve, what do you expect, I’m getting older and forgetful
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Allis Express North Georgia
41 WC,48 UC Cane,7-G's,
Ford 345C TLB
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