bridge oiling

[ultrafast30]

I want to oil the bridge on my 56 inch omc cylinders. Can somebody help.

[Powerabout]

I think there is a service bulletin showing where to drill the holes, anyone got a copy?

[ultrafast30]

I recall Bill Gohr mentioned that. Anybody know about it

[Fast Fred]

i scribe each piston then center it up and drill it, chanfuer the holes..... i scribe them with it all bolted up torqued to spec, even if i'm just puttin it together just to get that scribe mark.........

[ultrafast30]

Size hole??

[Steve Litzell]

Yup!,1.5 to 2 mm will do it as it is under pressure . Be sure to champher the holes as this helps as well.

[Fast Fred]

if the bridge is still full size, 1/8 or 7/64, three, three holes per piston...

[sharpeye Mike]

Any pics. of that Fred? I would like to understand this better, thanks.
Mike

[ultrafast30]

Thanks guys motor was just bored .020 over balance it next and ready to go together-