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Old 02-12-2019, 01:44 PM   #2
hiperfauto
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Join Date: Nov 2011
Location: So Cal
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Do you have any pics of the plugs installed? When installed properly, they should look like this.



All B18/B20/B30/B21/B23 engines use 45mm core plugs. The cam/intermediate shaft plugs are different sizes. 42mm for the push rod motors and 50mm for the OHC engines.

Early B230 engines engines use 40mm welch plugs while late engines use 40mm cup plugs.
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