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Old 05-10-2012, 11:18 AM
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Is my Valve Guide cutter broke?

I was cutting down the valve guides on a set of vortec heads today and I noticed it seemed like I couldn't keep the cutter seated. Its a Comp-4726 cutter.... any ideas what could be happening? I have always set the drill to a slow speed and used lots of cutting oil when I used this.
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Old 05-10-2012, 02:10 PM
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No offense, but did you have the correct pilot installed? That's the only thing I can think of that would keep it from being square since the carbides look good. Comp shows an 11/32 and 3/8 I think.
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Old 05-10-2012, 04:25 PM
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Quote:
Originally Posted by speedbump
No offense, but did you have the correct pilot installed? That's the only thing I can think of that would keep it from being square since the carbides look good. Comp shows an 11/32 and 3/8 I think.
I have the 11/32 one. Fits good.
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Old 05-11-2012, 07:52 AM
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I did go out today and noticed that the cutter and pilot can rock slightly back and forth just like checking a valve guide.
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Old 06-07-2012, 11:53 AM
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I was watching some youtube videos on cylinder head machining and noticed a lot of guys use a bounce spring under neath their cutters. Could this have something to do with it?
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