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  1. Engine removal - stuck mounting bolt

    Technical Help Forum
    I'm dropping my engine for the first time and I'm stuck on the rear engine mounting bolt(the long one). I've got the nut off it but the bolt won't budge. Is it possible to hammer it out as only option I can think of it drilling it out at this point Cx500b London. Uk
  2. Replacement Crankshaft, PLEASE HELP!

    Technical Help Forum
    Hi all, I am not sure where to begin but i am currently rebuilding my Honda CX500 Custom engine and i am looking for a BA BB A64 crank shaft. The original owner said he build it but i think he has used the wrong bearing and there is about a millimetre or slightly less of wear on the crankshaft...
  3. Residue in CX500 engine heads

    Technical Help Forum
    I have just bought a cx500 engine, the seller claimed the engine had been restored by a technician and presented the other bikes/engines at his home that this individual had worked on... All perfectly immaculate. The CX500 Engine cranks very nicely and a lot of pressure when spark plugs are...
  4. Wanted: Good CX500 Engine Block

    Selling and Buying Forum
    Hi there, I am on the hunt for a decent, running CX500 CDI engine with good compression. Aesthetics aren't overly important as I plan to strip and paint it however I would prefer confirmed running etc. I also have the front and rear cover, clutch, gearbox and stator etc.. so really just the...
  5. Engine Case Beyond Saving?

    Technical Help Forum
    So I have stripped my engine all the way down and noticed some imperfections. I don't think I am the first one to have disassembled it. The following pictures highlight issues of concern to me, I am wondering if it is worth being rid of the case and sourcing a newer one. Thanks! Wear behind the...
  6. The thing we all fear...Copper flakes

    Technical Help Forum
    As some of you may know since owning my CX500 she's been a rough runner, including problems such as a weak left side exhaust, randomly cutting out after 5 minutes of operation (only under load never at idle). No amount of replacement parts, mechanical or electrical seemed to fix the issues at...
  7. Bike sounded like something exploded

    Technical Help Forum
    Hello, i've been trying to start up the bike one last time before winter to change the oil, but there just isn't any ignition. The most worrying part is that on my last try it was trying to start it when it slowly stopped trying to turn the pistons and all i heard was the kind of electrical...
  8. Engine not starting when hot till cooled down

    Technical Help Forum
    Lately I got quite weird problem with engine. When it is cold it starts and runs without any problems. I can go 100kms without any problem. But as soon as I stop (turn off engine) e.g. for fuel it is not possible to start the engine again. It is dead completely. no a single puff... I have to...
  9. -:WANTED:- CX500 Engine

    Selling and Buying Forum
    Hello everyone, I am looking for a CX500 engine in decent cosmetic and running condition preferably with the triple bypass done. The higher condition the better really! Please DM me if you have anything kicking about, anything within reason will be considered I am Located near Leicester, United...
  10. Experiencing rubbing/vibrating after replacing stator

    Technical Help Forum
    Hey Fellas, So I got my raesan all up and going with my murray carbs and have been putting the miles on the bike for the past 3 days. I've noticed a lot vibration though around 2-3k rpms whether or no the driveline is engaged or not. I did install the g8 stator in place of the g47, not sure if...
  11. GL/CX 650 High Millage Engine Reliability

    General Discussion
    Hi Folks Wondering if anyone out there has a 650 with high Millage on it i.e. over 100,000. I read somewhere that 650 engines do not hang on as well as a 500 engines once tthe millage gets into the triple digits. Don't know if that is true or not can anyone speak to the longevity of a well...
  12. Rebuild the engine or not

    Technical Help Forum
    Hi everyone, So I'm going through the decision process of whether to rebuild my engine or not, I'm leaning towards no. So before the winter I bought 2 cx500's a 79 and 81 neither of which were running, nothing seemingly wrong with them just nothing attached to the motors to make them run, both...
  13. 1982 honda gl500 main and rod bearings

    Technical Help Forum
    Does anyone have or know where I can buy new main and rod bearings, or even a complete engine rebuild kit for a 1982 Honda GL500? I heard they are impossible to find but there maybe some bearings off an Isuzu or something that can be machined down to fit? Does anyone know if this is true and if...
  14. CX teardown how to clean parts individually

    Technical Help Forum
    Hi, I hope I'm posting this in the right forum, I'm new to this. Here's the context: I'm an engineering student and I got bored of theoretical classes so I decided to get my hands dirty. I'm a crafty guy but to be honest I don't have much experience in engine rebuilding. A couple of month ago...
  15. Left exhaust weaker and backfiring.

    Technical Help Forum
    Hi everyone, sorry I know it looks like I'm posting question after question but I am dying to get my project finished. I think the best way to explain it is that the right side runs consistently with a solid "thud" from the exhaust every moment whereas the left side is more of a "puff" with a...
  16. Wires protruding from rear engine casing gone

    Technical Help Forum
    Hello everyone I'm currently going over the parts I have for my first build I have two engines one a 78 and the other a 81 the 81 seems to be in better condition however when I had purchased it someone before seems to have cut the wires coming out of the rear casing of the engine. How integral...
  17. WANTED: CX650 motor (GL650)

    Selling and Buying Forum
    Looking for a 650 motor to swap into my CX500 project. Bonus if you're in the SW and/or within driving distance of Las Vegas.
  18. Time for restoring the engine?

    Technical Help Forum
    Hello I am currently in the process of restoring my bike, and therefore I am considering a full engine restore. Everything on the bike works properly, but in 5th gear on high rpms the engine stutters (which I think is the carbs?). So is it necessary or meaninful to tear the whole engine apart...
  19. Cx500 Main Bearing Issues

    General Discussion
    Hi there if anyone has any info on CX500 main bearings i would love some help. I am completely rebuilding my 1980 CX500A motor, over here in South Africa. When i brought the bike, i stripped the motor to find that it had run the big end bearings and damaged the big end journals pretty badly. I...
  20. The Reason Behind My Lazy Left Cylinder?

    Technical Help Forum
    So it would seem that the right side of my engine is running perfectly but the left side is still not going properly. It will vary from misfiring and backfiring to running fully but really weak. I have tested my CDI box and both plugs are creating a spark. I also swapped around the Ignition...
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