Fw: Cylinder honing

["Daegrigg (Don)" <daegrigg@domain.elided>]

Kevin,

I asked a similar question last summer when I was about to do rings on my
spider.  The ensuing thread discussion was very informative.  Here is one
post;  the rest should be available on the archive.
----- Original Message -----
From: "Tom Sahines" <tsahines@domain.elided>
To: <alfa-digest@domain.elided>
Sent: Monday, July 29, 2002 12:58 AM
Subject: Cylinder honing


> A liner can be resized by professional honing but then you would have an
> oversize liner. This is fine if you have oversize pistons. Most Alfa
liners
> show little wear at 100,000 miles and can be reused but it is normally
> viewed as false economy when new liners and pistons can be obtained for
> relatively little money in the overall cost of a engine rebuild. I doubt
> that you would find many pros that would risk using used liners and
pistons.
>
> If you measure the liners and feel that they are reusable not renewing the
> surface will surely result in unseated rings and much oil consumption.
> Proper surface conditioning (sometimes referred to as honing) can be
easily
> accomplished by hand with the proper tool. See:
>
> http://www.brushresearch.com/flexhonetools.htm
>
> Using a cordless drill turn the ball hone at a low speed and push in and
> out of the liner rapidly to obtain a 45 degree cross hatch pattern. I use
> Naptha (kerosene) as a lubricant. This is the correct surface to seat new
> rings. The process takes about 1 minute. Once you have used a ball hone
you
> will never touch a flat stone hone again. Install the pistons with new
> rings into completely dry liners. If you cant stand it dry spray a little
> WD40 into the liner and then blow or wipe it dry. DO NOT dip the piston in
> oil and install like we used to 30 years ago. This just makes seating the
> rings more difficult. Properly prepared dry liners with new rings will
seat
> rapidly. See:
>
> http://www.hastingsmfg.com/Service%20Tips/breakin_procedure.htm
>
> For the correct way to break in new rings.
>
> I have had great luck with Hastings rings. Results with Deves rings have
> been mixed and I no longer use them. I feel that the stock oil control
> rings that come with the new piston / liners are not good and I always
> replace them.
>
>
> TOM SAHINES ARA TECH HOT LINE SAN JOSE CA
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