Re: WTB: homemade leakdown tester

Posted by seestheday on Dec 12, 2012; 4:40am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/WTB-homemade-leakdown-tester-tp4033475p4033489.html

I believe the ngk d8ea is the factory spec.  I run the iridiums but don't think that is relevant.  Pretty sure they're the same as the sohc's.

Edit: Confirmed - its the d8ea (dr8eix iridium)

I believe that the following is correct as well
Thread diameter - 12mm (5/8)
Thread reach - 19mm