View single post by Esprit2
 Posted: 02-25-2020 10:07 pm
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Joined: 05-01-2005
Location: Minneapolis, Minnesota USA
Posts: 550
I'm not following your descriptions, so please post pictures so I can see what it is that you have.

I'm not sure how to make it more clear. Each cam carrier has only one oil feed hole, it's at the front, and it slips over the roll pin at the front of the cylinder head. There should be a 31/64" diameter x 0.050" deep counterbore around that hole, on the bottom side of each cam carrier.

In stock form, none of the other bolt holes or drain holes are to have any sort of counterbore or countersink around them. If holes at the back end of your exhaust cam carrier have been "routed out" (?), then someone has been screwing around with it. No, don't follow their example, don't "route out" any holes at the thrust plate end.

The only holes that require any modifications are the oil transfer holes... one at the front-center of each cam carrier.

Tim Engel

Last edited on 02-25-2020 10:08 pm by Esprit2