07-04-2018, 10:12 AM
(This post was last modified: 07-04-2018, 10:19 AM by Austin in the Shed.
Edit Reason: add content
)
If the holes are a 1/3rd out of position Gene you're going to struggle.They have probably been drilled by hand,the drill drifting from the tough stud to the softer cast iron.
Going one size larger will only take up 1/32" offset at best and then it will break out the side of your plug and probably move.
The holes between the cylinders are the most important as they can crack into the bores.
On one crankcase ,Sump thread,I had to tap it out to 7/16" Unf (most convenient) Plug it and to tap out 1/4" BSW.
Going one size larger will only take up 1/32" offset at best and then it will break out the side of your plug and probably move.
The holes between the cylinders are the most important as they can crack into the bores.
On one crankcase ,Sump thread,I had to tap it out to 7/16" Unf (most convenient) Plug it and to tap out 1/4" BSW.