Re: AutoLite 216's in Offy heads
Been out of town and just measured from the face of the head (where the plug washer sits) to the top[ of the exhaust valve in fully open position. Measures .615. so 3/4 reach is out of the question. Searching various plug specifications. The AutoLite 216 looks like a pretty cold plug. Maybe just get a hotter plug in that series
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