Starting with a spotlessly
clean block is essential to doing this correctly.
precise line boring machines, which include the capabilities to
boring for cam bearings are necessary for doing this work
block is setup and the process begins, it is necessary to run
until either the cam or main line boring process is completed in
mandrels determine and control the cutting process.
dial indicators are setup inside the block to monitor the slow
and tedious process.
is crucial to insure that the block boring is perfectly
straight. Naturally, the
block has been completely checked and magnafluxed prior to any
of this work takes place.
boring process is just that...BORING....010" at a time each
taken from each
journal and then the process starts at number one and back
through all over again.
By the time
this is completed, there is a lot of fine particulate left below
on the machine's deck.
A few looks
inside after boring and cleaning prior to the cam bearing
metal to be able to machine the block to allow the bearings to
an arrow and ready for the new bearings.
installed and viewed from the back of the block.
inside at a new bearing happily in it's new home.
A view from
the front of the engine after the cam has been fitted and
view in the center of the block of a newly installed bearing
ready to go.
boring process to fit the cam bearings takes over nine (9)
The machinist/operator must be at the machine the entire time.
The cam bearings are not installed until the line boring for the
is completed and the block has been hot tanked and detergent
high pressure at least two more times to remove all machining
That is why
this process is so expensive, if you can even find a shop
willing to do it.
53 Hartford Avenue
North Scituate, RI 02857
Toll Free 888-235-1622