Honda GX31 engine vibration problem?  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Gas Engines >> Honda GX31 engine vibration problem?
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Honda GX31 engine vibration problem? - 12/10/2007 4:01:41 AM   
yungman


 

Posts: 36
Joined: 12/2/2007
From: Santa Clara, CA, USA
Status: offline 		I read from a lawncare forum that the 4 cycle Honda GX31 31cc engine have vibration problem at top RPM. The vibration were so bad that it actually crack the crankcase!!! Anyone have experience of this problem on the unmodified engine only. I can understand if you modify the engine, you are pushing it to the limit. But for an unmodified engine, it is hard to believe it would do this. Any comments?

Is the GX31 design robust or the GX35 is better?
Thanks
       Post #: 1

RE: Honda GX31 engine vibration problem? - 12/10/2007 4:11:34 AM   
tim220225



Posts: 964
Joined: 1/17/2004
From: Mobile, AL, USA
Status: offline 		While I haven't had my 31 in a plane I have run it plenty and never had vibration issues. I know there are guys on a boat forum that hot rod these things and run them at 10,000 RPM with no issues.

(in reply to yungman)
       Post #: 2

RE: Honda GX31 engine vibration problem? - 12/10/2007 5:41:13 AM   
yungman


 

Posts: 36
Joined: 12/2/2007
From: Santa Clara, CA, USA
Status: offline 		Thanks Tim220225
That make me feel a whole lot better! I don't think Honda will make something like that. It is a very popular engine for equipments.

BTW since you have experience with this engine, can you tell me whether it has any cylinder wall lining or just plain aluminum? Does the connecting rod have needle bearing on both ends? I have trouble getting a clear break out diagram for the engine.

Thanks

(in reply to tim220225)
       Post #: 3

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