Honing a three-cylinder block

A

AVAST

Recruit
Joined
Feb 22, 2005
Messages
2
Hello, my question is, I honed the cylinder enough to de-glaze the walls, but still have small marks at top of cylinder. Should I hone them out or will they be okay? Number one cylinder was top to bottom, 3.00, 3.002, 2.999. Number two was 3.00, 3.00, 3.001. Number three was 3.001, 3.001, 3.001. This is a 1980 evinrude, 70 hp, which broke a crank on number one rod bearing. :(
 
O

ob

Admiral
Joined
Aug 16, 2002
Messages
6,992
Re: Honing a three-cylinder block

Ahoy,AVAST,I don't like the taper on #1.That plus visible scoring.Honing more will just make it worse.May consider going oversize.
 
A

AVAST

Recruit
Joined
Feb 22, 2005
Messages
2
Re: Honing a three-cylinder block

There is no vertical scoring marks in cylinders, but there is a small horizontal line at the ridge. Tried to send a picture of block, but couldn't figure out how.
 
L

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: Honing a three-cylinder block

It's all but impossible to true cyls. with a convention hone, you should use a precision hone, as you can see by your own measurments you have made it worse. No more honeing it should run. the reason you have a ring at the top of the cyl. is because you did not use a ridge reamer before honeing.
 
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