ch1929 Posted February 19 Share Posted February 19 Does someone have an old AC Spark Plug catalog that shows what the AC E9 18mm spark plug fits? Link to comment Share on other sites More sharing options...
Larry Schramm Posted February 20 Share Posted February 20 5 hours ago, ch1929 said: Does someone have an old AC Spark Plug catalog that shows what the AC E9 18mm spark plug fits? Can you post a picture? Link to comment Share on other sites More sharing options...
Hans1 Posted February 20 Share Posted February 20 Are we sure AC is maker? There is a B9 by Auto Lite. Link to comment Share on other sites More sharing options...
Mark Gregush Posted February 20 Share Posted February 20 The early Ford Flat head V8's used 18 mm plugs. What number it would be, I don't know. (B 4 cylinder still used 7/8") Link to comment Share on other sites More sharing options...
ch1929 Posted February 20 Author Share Posted February 20 2 Link to comment Share on other sites More sharing options...
PFindlay Posted February 20 Share Posted February 20 There is no mention of any E series of plugs in either the 1951 or 1970 catalogs (Canadian). But I picked up this list somewhere on this forum, I think. It is probably from the 30s and seems to indicate a type E plug. Maybe this will help. Peter Link to comment Share on other sites More sharing options...
ch1929 Posted February 20 Author Share Posted February 20 57 minutes ago, PFindlay said: There is no mention of any E series of plugs in either the 1951 or 1970 catalogs (Canadian). But I picked up this list somewhere on this forum, I think. It is probably from the 30s and seems to indicate a type E plug. Maybe this will help. Peter Thanks Peter! I did see that picture in a previous post, I wish I had a copy of the folded page 96 showing the Types. If the plug is an E Type I would guess the number would be the heat range, although the picture does not show any numbers after the E Link to comment Share on other sites More sharing options...
TerryB Posted February 20 Share Posted February 20 I had posted that, I’m not sure why I didn’t post the previous page. Unfortunately the book is now in the hands of someone else. Link to comment Share on other sites More sharing options...
ch1929 Posted February 20 Author Share Posted February 20 Thanks Terry! Link to comment Share on other sites More sharing options...
motoringicons Posted February 21 Share Posted February 21 Would you have TWELVE of these? I would be interested in a set of twelve. Thanks. Email: motoringicons@hotmail.com or 734-730-4274 Link to comment Share on other sites More sharing options...
Hans1 Posted February 21 Share Posted February 21 (edited) AC E9 spark plugs apparently went thru different stages of build. As I have learned, ( just a little ) older plugs were designed so that a nonreader could compare pictures/shapes to identify replacements. Early AC E's had a brass cap with removal straight porcelain, locked in place with nut, and a single Fluit radiating from base. Later they removed brass cap and added ribs to porcelain, still with a form of Fluit on base. Later, like your picture, the cylindrical base had differing lengths of base material. Yours being in the middle of heat range. Also referred to as SAE Regular in my material. ///////////////////// E types, 7/8 thread with 15/16 SAE. NOT 18 metric Heat ranges offered 4 1/2, 6, 8, 9, 12, 14 /////////////////////////////////// My info is limited but here are vehicles using AC E and AC E9 plugs. From the charts the letter E seems to be changed to the E 4 1/2 to E 14 heat ranges. These are 7/8 thread, NOT 18 mm thread. Apperson 8 cyl E Durant 75, 66, 65, 60, 55, 40. E Falcon Knight '27 '29 inclusive E Gardner '28 '29, except 1930-31. E Lexington all models E Marmon model 78 specified E9. Also, E, all thru 1926 included with old head. Oldsmobile 1927 E Reo 1927sterns Knight 1930 E Studebaker some models E Willis Knight, all but Series 86. E ////////////////// Other uses may be found, a cross reference for E9 showed Champion AB-44, .Champ 6, and C-4. I hope this is a little helpful. Edited February 21 by Hans1 change 19 to 18 metric (see edit history) Link to comment Share on other sites More sharing options...
ch1929 Posted February 21 Author Share Posted February 21 13 hours ago, motoringicons said: Would you have TWELVE of these? I would be interested in a set of twelve. Thanks. Email: motoringicons@hotmail.com or 734-730-4274 I only have 6 not looking to sell, Thanks. Link to comment Share on other sites More sharing options...
ch1929 Posted February 21 Author Share Posted February 21 10 hours ago, Hans1 said: AC E9 spark plugs apparently went thru different stages of build. As I have learned, ( just a little ) older plugs were designed so that a nonreader could compare pictures/shapes to identify replacements. Early AC E's had a brass cap with removal straight porcelain, locked in place with nut, and a single Fluit radiating from base. Later they removed brass cap and added ribs to porcelain, still with a form of Fluit on base. Later, like your picture, the cylindrical base had differing lengths of base material. Yours being in the middle of heat range. Also referred to as SAE Regular in my material. ///////////////////// E types, 7/8 thread with 15/16 SAE. NOT 18 metric Heat ranges offered 4 1/2, 6, 8, 9, 12, 14 /////////////////////////////////// My info is limited but here are vehicles using AC E and AC E9 plugs. From the charts the letter E seems to be changed to the E 4 1/2 to E 14 heat ranges. These are 7/8 thread, NOT 18 mm thread. Apperson 8 cyl E Durant 75, 66, 65, 60, 55, 40. E Falcon Knight '27 '29 inclusive E Gardner '28 '29, except 1930-31. E Lexington all models E Marmon model 78 specified E9. Also, E, all thru 1926 included with old head. Oldsmobile 1927 E Reo 1927sterns Knight 1930 E Studebaker some models E Willis Knight, all but Series 86. E ////////////////// Other uses may be found, a cross reference for E9 showed Champion AB-44, .Champ 6, and C-4. I hope this is a little helpful. Thanks Hans! I do appreciate the information. Link to comment Share on other sites More sharing options...
Hans1 Posted February 21 Share Posted February 21 (edited) post in wrong place Edited February 21 by Hans1 wrong post (see edit history) Link to comment Share on other sites More sharing options...
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