Quote:
Originally Posted by mewantkouki
I'd just have it drilled and tapped for 12mm studs and run rb26 hardware. People running re-tapped 11mm studs have had issues with thread engagement. The correct way would be a timesert or something along those lines.
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If you do that you will have to clearances on the oil feed hole in the center of the head. That hole will need to be drilled out to maintain the same factory clearance. Factory head bolt size is 10mm