Overhead cambearing line boring tool

Cutting by use of rotating axially moving tool – With radially outer limit of cutting edge moving to define...

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Details

408 75, 408116, 408708, B23B 4112

Patent

active

047309580

ABSTRACT:
A portable cambearing line boring tool for an internal combustion engine with an aluminum head or a cast iron block with aluminum caps and an overhead camshaft with non-replaceable bearings that are cast in as an integral part of the cylinder head which utilizes a cutting bar formed with blind openings for receiving spring loaded cutters. Centering of the cutting bar is by the use of locating bushings selected to fit a plurality of different cam-oil-seal and/or oil-plug openings at either end of the cylinder head. The bushings remain in place during the line boring. Horizontal alignment is by alignment ears secured to the upper valve cover gasket surface. For long heads a center bar support is provided. Rotation of the bar is by a portable hand held drill.

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