mfg Posted January 1, 2022 Report Share Posted January 1, 2022 (edited) Studebaker recommended using Champion.....?..... spark plugs for an Avanti that was to be used in "sustained high speed operation" 1) H-14Y.....2) J-10Y....3) R-J12Y....or....4) J-61Y (As of 4/10/63) Edited January 1, 2022 by mfg Added date Link to comment Share on other sites More sharing options...
avanti661 Posted January 1, 2022 Report Share Posted January 1, 2022 4 J-61Y Link to comment Share on other sites More sharing options...
mfg Posted January 1, 2022 Author Report Share Posted January 1, 2022 3 minutes ago, avanti661 said: 4 J-61Y Sorry no, not J-61Y Link to comment Share on other sites More sharing options...
studegary Posted January 1, 2022 Report Share Posted January 1, 2022 34 minutes ago, mfg said: Studebaker recommended using Champion.....?..... spark plugs for an Avanti that was to be used in "sustained high speed operation" 1) H-14Y.....2) J-10Y....3) R-J12Y....or....4) J-61Y (As of 4/10/63) J-10Y (formally J-9Y) Link to comment Share on other sites More sharing options...
mfg Posted January 1, 2022 Author Report Share Posted January 1, 2022 13 hours ago, studegary said: J-10Y (formally J-9Y) You got it! Link to comment Share on other sites More sharing options...
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