grove cutting tool

[Frank S]

I totally agree with your observations and comments on this issue, I do the same thing on my motorcycle engines on all mating faces and junk the gaskets.

http://www.homemadetools.net/forum/g...2000#post75558

Yep, my dad told me that there has never been an automotive engineer who knew everything. I acquired a war surplus HD 45 sometime around 1968 he and I stripped it to the last bolt then rebuilt it our way. every mating surface had a tiny little grove cut in them either to hold the gaskets or to aid in sealing He had dozens of little tricks he showed me while we put it back together. Probably the only 45 in the country at the time that you could ride hard all day then park it on a white towel and not get shot by my mom for ruining her towel.
It doesn't take much of a grove on most things like motorcycle cases just a few thou wide and deep is enough. A lot of the Japanese cycles have groves made for "O" rings Imagine that!