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piston head damage?

Old 03-29-2004, 02:07 PM
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thatscold
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Default piston head damage?

I am in the process of breaking in my force 21 engine on my Rex-x, and having run a few tanks of nitro through as per instructions I decided to check the glow plug. In the process I noticed a brown ring on the top of the piston head, is this normal? Or have I cooked the engine? Any help would be appreciated as a newbie I'd hate to think I'd knackerd my engine already![&o]
Old 03-29-2004, 03:19 PM
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RaZ_Tx
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Default RE: piston head damage?

i think the brown ring is from having the engine so rich its just a varnish from the extra oil its getting during break in wich is normal finish the break in process the brown ring should go away
Old 03-29-2004, 03:39 PM
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thatscold
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Default RE: piston head damage?

Thanks for your help, nice to know I haven't done any damage yet!

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