N231BN Posted March 3, 2022 Report Share Posted March 3, 2022 (edited) On 2/8/2022 at 10:13 PM, Peter Rejto said: Wow, Thanks so much for the great replies! All very useful. Okay, I may have been totally unclear about the plugs(?). I have 4 new AC HSR 83P fine wires going to waste. I know AC went out of business thanks to Champion. My question is are these compatible with my IO-360A3B6. I'm pretty sure many years ago I ran them in my J which at the time was the A3B6D. But, I can no longer find a cross reference. I intend to order new Tempest fines for at least the bottom plugs, but it's going to take a while for these to arrive in Australia. I was/am hoping the HSR-83Ps might tide me over. Anyone know? Thanks! I intended to reply to this last month but I'm easily distracted. Attached is the last version of SI 1042 that included Auburn plugs. Lycoming has not said they are no longer compatible, they just dropped them from the list as they haven't been manufactured in a while. Anyway, if you don't want to use them I would happily take them off yours hands . BTW, the TCDS for Continental Engines still lists AC plugs. SI1042AC Approved Spark Plugs.pdf Edited March 3, 2022 by N231BN Add attachment Quote Link to comment Share on other sites More sharing options...
Peter Rejto Posted March 3, 2022 Author Report Share Posted March 3, 2022 Thank you! That's a good document to have on hand. I did install the HSR-83P plugs and they are performing very well. Peter Quote Link to comment Share on other sites More sharing options...
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