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Discussion Starter #1
New to forum and a novice in small engine repair. I acquired a GX270 engine as part of a Porter Cable generator setup with 413 hours on it and don't know the maintenance history. The engine had some slight surging issues that resulted in variable generator voltage output so I started tearing it apart to rebuild any areas of concern. On the bottom of the cylinder head I found cracking and was wondering if this is normal wear and tear in the picture below? I can't see any areas where the cracks go all the way through the head and did not do a compression test prior to removing it from the block. Is it recommended I replace this cylinder head regardless of compression test results? Thank you in advance for any help.

7904
 

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I would send the pix to north american honda for sure.
low hours and cracks like this.
they might send you a new head!
they are pretty good about stuff like this..
ultra rare issue on a honda for sure!
it is a bad casting of the head. for now get a new head on the gen.
be sure to set the valves etc.
run for 50 hours and check the valves again.
see the page below for good test tools including compression tester and leak down tool
ENGINE_TEST_EQUIPMENT
 

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Discussion Starter #4
I submitted a case to Honda so we shall see their response as I agree there should not be such cracking present. I will report back on findings. Thanks to all.
 
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