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XR500R Questions - Kinda long
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[QUOTE="DualSportr, post: 185173, member: 19592"] Regarding the use of the Thumper insert on your stock system - You really need to get in touch with Thumper to find out if it'll fit what you've got - I believe the early RFVC 500 ran a closed-type end cap, and doesn't accept any type of insert, but I could be wrong. The RFVC XR500 is actually quite different from the 600 - the chassis design is different, and the headpipe locations are also different (where they exit the head). So, unfortunately, a 600 muffler won't work - but you may be able to modify one to fit - although I'd do some serious measuring before spending any $$ on a muffler designed for the 600. I would not recommend the Cobra system if you want something more quiet. Cobras are notorious for their loud exhaust note, and may actually increase sound over your blown setup. Recharging the shock may be okay - but in most cases, you're right about the seals being blown. Normally you have to get the whole shock rebuilt - which is definitely about a $300 job. Don't cheap-out on this one. Rebuilding suspension is a delicate operation, and needs to be done by a qualified suspension guy - anything else is just asking for trouble. While you're at it, rebuild the forks too - they'll just need new seals and oil and this is relatively cheap. If the rear is shot, the front is probably pretty mushy also, you just don't notice it as much because the back's so bad! Check the filter - if it's the stock foam filter, you might want to replace it - for some reason these first-year RFVC's seemed to have crummy filter material that breaks down after 10 years or so. UNI makes a replacement. The only thing that will kill this engine is bad oil, low oil, or old oil. Don't skimp on oil quality - and most companies do not recommend synthetics with in the Honda RFVC's (it is hard on rockers and camshafts) - I know there are many Mobil 1 fans out there - I'm sorry, but even the cam manufacturers tell RFVC owners to stay away from Synthetics. Hondaline and Torco make excellent quality petroleum four stroke oil. Change the filter often also. The speedo drive on this bike always seemed to get smashed - it really sticks out there! You may want to just plug the hole and use an enduro speedo that doesn't run off a hub drive. Stock sprocket sizes are 14/48. Yes, they did have a little plastic sprocket cover - and maybe even a steel case saver behind that - can't remember exactly. Hope this all helps! [/QUOTE]
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XR500R Questions - Kinda long
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