Cylinder Material - Honda TRX Forum
 
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post #1 of 4 Old 08-07-2019, 01:49 AM Thread Starter
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Cylinder Material

Hi I have a 2002 Honda 250ex and have been rebuilding the motor but before I sent the head out to be machined I wanted to know what it was made of (aluminum steel Nikasil cast etc) if anyone knows the answer I would greatly appreciate it thanks
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post #2 of 4 Old 08-07-2019, 01:23 PM
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The cylinder head is aluminum with steel valve seats - the seats can be ground or cut to correct wear and provide a new seat for the valves.

The cylinder is aluminum with a steel liner - it can be bored to oversize for fitting of a new oversize piston.

Do not confuse the cylinder head with the cylinder - your post says head, but your question indicates cylinder.
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post #3 of 4 Old 08-07-2019, 04:28 PM Thread Starter
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So it can be bored without having to replate it?
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post #4 of 4 Old 08-07-2019, 05:31 PM
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Yes - it's not plated
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