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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
Does anyone know what the xtra hole in the middle of my heads is for???? The bolt came out and made me think I blew a head gasket what the heck is this extra bolt hole doing in my head confused?????
Last edited by Jay Jay jet plane; Sep 5, 2021 at 03:26 AM.
Reason: Photo
It would help to know model year, modifications, which SE heads, etc. Sounds like the threaded boss for ACRs that was "plugged" and plug backed out. A picture would help.