Hey all, I have a bunch of newbie mechanical questions that I hope you can answer for me.
background:
I own, among others, a 93' KX5 what has worked really well for my type of riding, but the previous owners didn't do much to it as far as maint goes. So, I am in the process of rebuilding it. I CAN make it faster and stronger. hopefully it won't take 6 millions dollars to do it.
Super newbie question 1: Whats the hole (drilled in the side) for on my new Tusk drain plug?
newbie question 2: Is it easier to do a top-end rebuild (see question 3) while the motor is in the frame? I have to pull it out anyway (frame welding job), but I read in my Clymers that it's sometimes easier to just leave it in the frame. Whats your experience?
newbie question 3: I am going to attempt my first top-end rebuilt myself. I am pretty good with a wrench, but have never cracked to top off a motor. Anybody have any suggestions or should I just take it in to the shop and let somebody else do it. Keep in mind that I have blown my "new bike" (kx250f) and my "upgrade" budgets for this year. Any more and my wife is gonna get reeaally mad.
I have already purchased a new Wiseco kit (pistion, wristpin, rings, circlips, etc), an engine gasket kit, and oil-seal kit and I think I have all the tools I will need.
newbie question 4: The previous owner of this k5 used belRay H1R at a 50-1 ration (one small bottle of oil to 5 gallons is what he told me). I used that same ratio all last year and it didn't seem to hurt anything, but with the new pistion and such, I am wondering if I should change things around. Keep in mind I don't ride the beast to it's full potential (yet).
newbie question 5: jetting? I order a new reed cage and reeds for it and am thinking I should change back to the stock jets. The previous owners had some goofy jets in it, but the motor ran fine. Strong through the whole powerband and didn't blubber or loadup. My qustion: What jets sizes should I use? I think the stock ones are a #60 pilot and a #168 main. I live and ride anywhere from 3500 feet to 5k in Montana. My problem is that I hate dinking with the jets after I have everything back together. I suppose the stock ones are a good place to start though. Does anybody think I should change them at all with the new reeds?
Any and all help would be appricated.
Thanks!
NN