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Old 05-30-2010, 10:40 AM
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K.i.p K.i.p is offline
Motorized Bicycle Elite Member
Join Date: Nov 2009
Location: CNY
Posts: 340
Default Re: Actual Blown Headgasket

The correct way to lap is in a figure eight pattern. 300 grit should handle the whole process. You will get a 10 micro finish no problem even dry. Wet sanding and going for a mirror finish is just gilding the lily. Hey knock yourself out if it makes you feel good but I prefer to work smart not hard. Wet sanding is generally only a cosmetic process.

If you have a nice cross hatch that feels smooth when you run a finger nail over it your there. Running a graphite pencil tip over a surface is another improvised test for micro finish.
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