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Tinker · 07-05-2020, 12:52 AM

If you have a 37 21 stud or earlier 18mm plugs. just get one of these for compression checks.

https://www.snydersantiqueauto.com/P...earchByKeyword

If using 18mm I like autolite as they still have screw tops and you can run raja ends.

07-05-2020, 12:52 AM	#16
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,053	Re: Compression tester If you have a 37 21 stud or earlier 18mm plugs. just get one of these for compression checks. https://www.snydersantiqueauto.com/P...earchByKeyword If using 18mm I like autolite as they still have screw tops and you can run raja ends. Last edited by Tinker; 07-05-2020 at 01:03 AM.