still noisy

The,"Main" bearings rarely go on these engines not to be confused with the Big-end shells/crank shaft bearings and crank which can be damaged easily dependent on the running conditions they receive.



A well serviced CX can easily go over 140,000 Km+



http://globalcxglvtwins.hostingdelivered.com/viewtopic.php?f=20&t=289



With no bottom end problems.Some in Australia are over the 200,000 Km mark.



Some quick or quicker ways to ruin the engine.



Not taking notice of Cam-chain knock in time and failure to replace the cam-chain and or failure to adjust on a regular basis is a manual cam-chain.



Not changing oil+filter and or coolant often enough.



Running the engine above it's nominal operating temperature for prolonged periods.



Running the engine on a lean mixture for prolonged periods(Overheating is a symptom).

Just a thought.Are you 100% certain you have the tappets set correctly e.g @ TDC on the Compression stroke?



http://www.pdsrecording.site90.com/cxgl500/CXGLTappets.htm#CXGLTappets



Also there could be a possibility that there's something not right with the Cam-chain and adjuster and were you certain you got the Cam-chain alignment correct?

jasonh said:

Well, I'll pull it tonight or tomorrow morning and find out. Just wish I had something on-hand to replace it with. I think all I've got is a few PC fans, lol.

Click to expand...

High powered PC fans have been used as an electric fan conversion but they were these type,



http://cgi.ebay.co.uk/Vantec-Tornad...618?pt=LH_DefaultDomain_0&hash=item415251a122



By the time you have at least two needed you can get a 2nd hand Bike fan if this indeed you problem.

Yep.That's quite common e.g small cracks leading to larger ones like you have.Good job you found it in time as the fans can explode taking the Radiator with it

I'd dress the tappets.If nothing else it will help eliminate another source of noise.I think it's a combination of sounds which is quite common when we get these bikes after they have been left neglected for years and or badly treated.



I didn't get my engines sounding smooth in one night



It was a process of servicing things that had been neglected over the years.Also look for any exhaust leaks.Even a bad manifold gasket ring



http://cgi.ebay.com/ebaymotors/NEW-...3484706QQptZMotorcyclesQ5fPartsQ5fAccessories



can cause what sounds like a noisy tappet or little end knock.

I found the 75 Deg C temp switch,where I mounted them,are susceptible to the the amount of coolant in the Radiator hence I only fill about 3/4" above the fins in the Rad.As in the other thread on the coolant overflow bottle doing this may not allow the coolant to to and fro' from the overflow bottle but this is under test as in a correctly cleaned and flushed system the overflow bottle may not get used much if any.

Having the Rad full and in Summer the fan may not switch off until longer sustained air-cooling kicks in but as my Ducati fans only use 2 amps this is not a problem anyway as even my 170w Stator CDI system has never flattened a battery yet but I do maintain my batteries correctly and give them a fresher step maintenance charge from time to time especially in the colder months.





This does not affect the fact that were I have mounted my Temp switch and the lower level of coolant have caused no harm whatsoever in two Summers and a Winter.If it were possible to mount the temp switch on top of the rad I think you could have the best of both worlds or you would have to fit say an 80 Deg C switch



http://cgi.ebay.com/12-Temperature-...686?pt=LH_DefaultDomain_0&hash=item3f0257a7de



were not around when I wanted to try one or I couldn't source them.You can't go much above that otherwise the fan will just kick in too late.At a push an 85 Deg C N/O.A 90 Deg C definitely does not work as that's what I 1st tried.