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Discussion Starter · #1 ·
A friend who runs a cycle repair shop mentioned that the cx/gl 650s suffered cam follower failure that the 500s didn't. Has anyone heard of this? If true it smacks of the 1st generation vf750 cam failures that I knew personally-3 sets in 17k! After the 2nd replacement Honda said "it's yours now." I promptly swapped it even up for an '81 GS1000G-a very good move.GJ
 

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A friend who runs a cycle repair shop mentioned that the cx/gl 650s suffered cam follower failure that the 500s didn't. Has anyone heard of this? If true it smacks of the 1st generation vf750 cam failures that I knew personally-3 sets in 17k! After the 2nd replacement Honda said "it's yours now." I promptly swapped it even up for an '81 GS1000G-a very good move.GJ


Can't say that I ever heard that.



I have heard of some of the 500's that have worn prematurely, I think there are different followers on some engines, one type may be a newer, better design.



I remember reading a post about it.



edit;

I did a search of the old forum and found the post.
 

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I bought a cam shaft and followers on ebay a while ago. I was considering rebuilding my old engine. Anyway... upon inspection the followers were obviously damaged beyond the hardened surface. I snapped a picture sent it back to the seller, and he gave me a full refund - including the shipping - These were for the CX500 engine - so yeah, I think the issue isn't with the engines or parts, but more of the previous owners respect towards oil changes and maintenance, because when I did tear into my engine - 130,000 km - the shaft and followers were in excellent condition.
 

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I've had several abused CX500 engines with badly worn cam followers and cam-shafts.In all cases it was Pilot error by POs



The main cause was incorrectly installed cam followers orientated the wrong way round.There is an A and B type and they must be fitted with the cups at the correct angle to receive the ends of the Push rods.Wrong way round and they apply incorrect pressure on the Cam lobes and the cam follower faces.



In this picture the two on the left would be correct and the two on the right would be wrong and cause premature component failure







I also found the oil orifices reversed and or blocked on some of these engines which will also cause top-end oil starvation.



I don't think there are any inherent faults with the design of the 500s or 650s.
 

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Discussion Starter · #5 ·
I've had several abused CX500 engines with badly worn cam followers and cam-shafts.In all cases it was Pilot error by POs



The main cause was incorrectly installed cam followers orientated the wrong way round.There is an A and B type and they must be fitted with the cups at the correct angle to receive the ends of the Push rods.Wrong way round and they apply incorrect pressure on the Cam lobes and the cam follower faces.



In this picture the two on the left would be correct and the two on the right would be wrong and cause premature component failure







I also found the oil orifices reversed and or blocked on some of these engines which will also cause top-end oil starvation.



I don't think there are any inherent faults with the design of the 500s or 650s.
Thank you guys,that is a relief. When I first fired up my new/old gl it was clattery but upon inspection it looks as if the valves had never been reset in it's short 11.2k life. It took about 1/4 turn on some to get them right(what's the pitch of the adjuster threads?). Front tire,fork seals,ignition switch,air box,tank sealer,seat cover,battery,headlight mount are coming from Amazon & Ebay. So for about $550 she'll be a licensed rider.
GJ
 
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