Hi Bob,
You need to examine the cylinder bore carefully for any marks caused by the
previous problem. If it looks OK then I would think a new +020 piston with
new rings is OK. Honing is intended to super finish the cylinder bore and
remove the radial tool marks left by the boring tool, as well as bringing it
to the correct size. The honing process itself is not intended to remove
lots of metal as it is a finishing process, removing at most just a few
thou. You should consider honing the bore only if the cylinder surface has a
glass like finish, as such a finish will prevent the new rings bedding in.
A feeler gauge and the old piston will give a rough idea on size but any
doubt , get someone to measure it for you.
If the bore is severely marked the the only sensible solution is a Complete
rebore on all 4 cylinders. Do not consider putting in just 1 oversize piston
as you will experience engine balance problems and possibly carburation
problems as well.
When assembling the engine again remember to get the rods in the correct way
round.
Good Luck
David Tinker david.tinker@virgin.net
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