1800vw

Photo shows boring tool used to cut cases for Big Bore Cylinders.

Note: Both diameters and depth plus truing the top surface are all done in one cut. This insures all cylinders are exactly the same and cylinder base to the cranks centerline are exactly the same.

This is done on a vertical milling machine not a drill press.

Photo is of case bored for 92's with the small #CS92 savers for 10mm studs.

Note: The top of each case savers must be below the surface the cylinder sits on.
This is important as the cylinder should not contact the case saver.

We recommend the #CS92 case savers and the 10 mm case studs. The stock 8 mm case studs were designed to stretch with the 1600cc cylinders.

If you are using 94 mm cylinders then you must use the case savers for the 8 mm case studs. If you run any thing but a very low compression, you will need the chrome molly 8 mm studs with the 94's.

.......Compare P&C sizes, 77mm 40hp to 94mm Big Bores -- info.