DRZ-400 Rally Raid Big Bore Engine Build (Under 450CC)
I blew up my '14 drz S a few weeks ago. Started, and ran cold up to to redline one the highway. I know it was dumb. But i have since installed a big bore kit and stroker crank. I also had the head serviced with new SS valves and had it ported and polished at Fastheads.
I was running the 3x3 mod, and a JD jet kit. Everything else stock.
Wondering if the bike will run well with stock carb and pipe, and what jetting to use.
If it will run like crap, what carb and pipe do I want to run? (I want a quiet pipe)
Normal operation is at 600 ft and cool, but do travel to colorado often.
I just bought a 1982 XT250 project bike. We had one of these in the family in the 90s, so I know the model fairly well already. I guess my plan is just to have a small, simple bike for shorter local trips, and maybe some light trail touring. I do know it has some known weaknesses, i.e. suspension, brakes, 6V electrics, corroding mufflers, and open frame/exposed engine cases.
So I am looking for tips regarding big bore/ higher comp pistons, camshaft (Web Cam) stiffer shock, fork springs, 12 V upgrade, and so on. I was also thinking about fabricating a stepped SS headpipe, and use a 1 1/2" inlet Supertrapp IDS2 muffler.
I guess the weight saving will be replacing heavy stock parts with lighter parts in alloy etc (Sprocket, handlebar, rear fender reinforcement for tail light etc), and using smaller/ lighter tail light, indicator lights. And also replacing the stock instruments with a digital dash from KOSO, Trailtech etc.
Any and all tips are welcome!
totaled my 16 drz 400 sm. less than 1000 miles on carb. looks and functions like new. non ethanol used only. purchased new from jd jetting as a complete kit for a drz 400 sm. comes with the adapter for the intake, jd jett kit, and easy adjust mixture screw. pay pal accepted $700.00
seat concepts tall seat, less than 1000 miles, looks and feels new, if you know anything about seat concepts they are stiff when they are new and have to be broken in, this one is still stiff, looks new, no scatches, scuffs, or tears. pay pal accepted $200.00
Good day. I've come across this image of a Honda CRF450 Rally engine. What draws my attention is the piece of equipment next to the crank case guard. What is it exactly? Is it used like a chain lubing system? Why would it need to be planted in the direct vicinity of the front sprocket otherwise?