carbide cylinder bore conversion (Bore Tech)

[Greg Hermann]

>In a message dated 1/10/99 1:24:00 PM Pacific Standard Time, bearbvd at sni.net
>writes:
>
><< Not really so when dealing with an 8 u inch polished finish. If the bores
> are the same diameter (within a couple of ten thousandths, and all
> straight, no prob. I thought about lapping each set of rings to its own
> hole, but decided that the extra block clean-up was a nightmare (not to
> mention stray lapping compound) waiting to happen. (Lapping compound in
> this case would be more like jewelers' rouge than what you are used to
> thinking of for lapping valves. WAY finer.) Lots of serious HP boat motors
> are pre-seated this way. It works. Also saves a LOT of break in debris from
> floating around insside the engine.
>
> Regards, Greg >>
>You might try using your cylinder sleeve with a bit of Diamond Lapping
>Compound. We used to use it on solid laps for very fine finishing on aluminum
>and andodized surfaces for Hydraulic actuators. These were lapped for finish
>and size and fitted with 0.0001-0.0002 slip fits. you might think about making
>air cylinder operated vertical lap if you want to get it done quickly, also no
>side load on the pistons that way.
>Fred

Hey---nice suggestion. Thanks, Fred. I was thinking of just using a spring
or some other sort of a flexible connection to the ring holder, but lazier
is always better!!!

Where to find the diamond lapping compound?? Is there a variety of grit
sizes?? If so which is best??

Regards, Greg