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Old 10-23-2004, 12:03 PM   #1
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Default Engine's compression

Hello all!!

I have a Carlsen .12GT engine that's been sitting in my drawer for some time. I took it out and realized that the crank is rather lose and my glow plug is "stuck" (I can't get it out with my cheap axx tools).

I can now turn the crank one full cycle with my bare hands by twisting the shaft, no flywheel attached! (I'm sure as I can see the piston move up and down from the exhaust port).

I am assuming this is not normal? What can I do to build up the compression?

Thanks!
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Old 10-23-2004, 04:08 PM   #2
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Time for an engine rebuild.

At least a new piston sleeve.
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Old 10-23-2004, 04:14 PM   #3
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or you could try a piston resize. theres a thread on it somewhere, sorry i couldn't find it. Look for osrocket on ebay.com
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Old 10-23-2004, 04:17 PM   #4
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edit: try rayracing.com, supposed to be the best, there's a thread near the bottom of the nitro page
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