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should i sand this head down?

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Pete.
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PostPosted: 22:25 - 28 May 2015    Post subject: Reply with quote

That's not detonation damage. Foreign object impacts.
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Rogerborg
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PostPosted: 22:46 - 28 May 2015    Post subject: Reply with quote

Cone filter?

None filter?
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jimspeed
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PostPosted: 23:31 - 28 May 2015    Post subject: Reply with quote

I would just flat the high spots off it to prevent hot spots causing det, possibly a broken ring at some point?
dremel with a fine grade flap wheel maybe good but go easy with it
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stinkwheel
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PostPosted: 23:47 - 28 May 2015    Post subject: Reply with quote

I'd leave it. Happened a while ago. Obviously been running ok since.

When I've had similar damage (usually caused by an errant small-end needle bearing). I've tapped down the high-spots in the alloy with a small ball-pein hammer.

To sand off enough material to shift that lot, you're going to significantly increase the squish. which means skimming the head down. Where do you stop? (obviously, when the plug hits the piston... but you know what I mean)
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CaNsA
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PostPosted: 00:41 - 29 May 2015    Post subject: Reply with quote

PaulFzs wrote:
got the dremel out and smoothed it off, no ridges and polished off with some autosol.

Pics?
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