I own a 92 DR650R (SP44B), which I've had now only a few years, my first Suzuki ever! It came with the airbox top cut wide open, a straight through (and very loud) aftermarket GSXR type exhaust and jetting modifications done to the carb. All this sure gave it power, but made it very difficult to ride as it was often unpredictable (stalling, surging and bogging) at low and medium speeds. It also turned out to be very impractical as it took over 10L/100km! After reading all the material I could find about the carb, tinkering for many months and still not getting it to run quite right, I cleaned the carb and went back to stock. Put on the stock pipe, inserted the stock jetting kit and taped up to top of the box leaving a bit extra room for more air to get in.
Going back to stock seemed to do the trick, it ran very well, got 5L/100km, but I don't like the sound of the original can and I wanted more power. So, after some searching online I found a 03 GSXR can x18G0x (long and a bit thick, but had the light Titanium core). I then set about installing it (see attached pics). Gotta say, it sounds superb!!!
I'm elated and so are my neighbours.
Now for my exhaust question...Is it necessary or just recommended to use vibration dampeners between the frame and exhaust mounting brackets? Consequences? Tips?
I plan to open up the box a bit now and once again jet the carb, but I'm having trouble piecing together which and what as it's a 92 not a 96 or newer DR... Basically I'm asking if I administer the level 3 BST magic mods intended for 96 and newer DR bikes on a 92, will it work out well?
I've read through almost all the posts, links and bibles I can find on jetting the BST40, airbox mods and GSXR cans so I've some ideas now, but don't wanna end up back at square one as it's an older bike than found in the mods posts etc. Is there anyone out there (riding at sea level or close to sea level) with a pre 96DR who's experience doing these mods successfully and who wouldn't mind sharing their knowledge about the jet sizes, settings and box opening sizes they used? My current stock carb set
: Main Jet #137.5, Needle Y532 (no positions), Pilot/Idle Jet 52.5, Needle Jet (don't recall).Available carb set
: Main Jet #155, Needle 6H25-94 (4 clip positions & very nicely tapered), Pilot/Idle Jet 47.5, Needle Jet Y-2.
If I recall correctly mxrob recommended to someone earlier in this forum with a 95 DR to try a 42.5 Pilot/Idle Jet.
Any advice you can offer would be appreciated.
BTW enjoy the pics.
I had better close-ups, but the files were too large, sorry!