OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines Stripped Quantum head bolts

Hi Dave107,

3/8 should be ok it's only 1/16 bigger than 5/16 or 1.5875 mm bigger than 5/16. Some holes will be about point .75 mm closer
to the bore.


Cheers
Max.