E: Engine spark plug 'ole

vibrac

Well Known and Active Forum User
VOC Member
The heads on the bike now but I have a spare refurbished shadow head I will stick that on the jig tomorrow and take a picture
 

Cyborg

Well Known and Active Forum User
VOC Member
For the countersunk area on the outside, I found that an old Kowa (Honda) valve seat cutter would round off the bottom of the pocket so that it was almost identical to the original. It wasn’t used to cut the actual countersink, just finish it off. Made a pilot, similar to the one with that nice jig. Basically a gutted spark plug with a bushing in it.



B27354DE-59E9-42C2-8816-BD816FBA5B37.jpeg
 
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