Another interesting set of rings.

Ultradog MN · Sep 17, 2013

The top end of this 192 gasser had a rattle in it. Long screwdriver to the ear said #3.
Not all the time but occasionally on deceleration.
So I was looking the pistons, rings, etc over carefully as I pulled them and found this on the second ring on #3 piston.
Looks like the ring shattered into several pieces and the pieces beat the ring groove wider in that spot.
Piston is ruined of course but the bore looks pretty good yet. A guy could probably ream the ridge and hone it good and be ok.
The rest of the rings/pistons look normal.
Not much ridge in the bores.
Anyone have an idea why a ring would shatter like this?

Texas! · Sep 17, 2013

Too much nitro in the gas and the boost dialed up too high!

Ultradog MN · Sep 17, 2013

I wondered what that extra tank was on the tractor.
It must have been for the
N2O

mhb@ufe · Sep 17, 2013

I would suspect it was broken during installation of the piston into the cylinder.

Mark

Pops1532 · Sep 17, 2013

Never seen anything quite like that.
Did you rotate the top ring? Reason I ask is the failure is directly below the gap in the top ring.

I think Mark is on the right track....broken (or at least hurt) during installation.
Could the end gap have been too tight?

Texas! · Sep 17, 2013

Not N2O but CH3NO2.

jbirnsch · Sep 17, 2013

Cold starts with either?

Another interesting set of rings.

Ultradog MN

Well-known Member

Texas!

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Ultradog MN

Well-known Member

mhb@ufe

Well-known Member

Pops1532

Well-known Member

Texas!

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jbirnsch

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