best way to gap rings?

[Boostedexcel]

What is the best way to gap rings? the other day I tried using a file, that took way too long. Then I tried using an air powered dremmal/grinder but i instantly ended gapping to big and ruining the rings. Is the real gapping tool the only way to go or can I get away with a dremmal? Also do both ends of the rings have to be filed or can I only do one end?

 

[Defiant]

http://www.totalseal.com/
Have both a power and manual gapping grinder.

 

[99gst_racer]

I use this same manual ring flier that is on the Total Seal site. It works great.
The power filers are nice, but too damn expensive unless you build engines daily.

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[NitrousPete]

Definately get a ring gapper, it's the only way to keep the ends of the ring flat, sharp, and square. With a dremel or file it's too easy to round a corner etc.

 

[Boostedexcel]

okay I guess this ^^answers my question about having to file both ends...also what is a good suggested gap for around 16-25 psi on my wisecos? I was gonna go with .016 on top and about .020 on the middle ring.