Post by Sailwin on Aug 16, 2019 11:48:06 GMT -5
I'm curious for some feed back. 
Bike's current location: Albuquerque "ish", NM (5,335 ft. elevation)
Bike: 2015 Honda Ruckus.
Modds: Heavily ported and polished the carb (inlet, outlet,vacuum chamber inlet, vacuum chamber, vacuum slide chamber, even float bowl area, lol). Heavily P&P intake manifold, carb boot. P&P stock exhaust inlet. Modded stock air box cover (completely opened up "snorkel" and outer "vents"
Current Carb settings: 42SJ, 92MJ, 1-1/2 cuts on carb spring, (x1) 2.5mm washer/shim on needle.
Future work: going to try the 2003 Honda ruckus jet needle (curious what the difference is), more diaphragm springs (I think my best test was at 1-3/4 cuts, but I'm going to play around some more), modifying some needle jets
, and maybe something else?
My opinion: bike is running about the best I have had it. I think there is room for improvement. The larger the SJ, the more power uphills (I'm guessing because more gas around 3.5k to 7.5k rpm). Each size smaller SJ significantly slows the bike uphills. HOWEVER, each smaller SJ is easier to set idle, the bike possible returns to idle quicker, and might smell less like gas. So I'm guessing I'm compensating for lack of fuel below 7.5k rpm with the larger SJ, but I should mess around with my needle jet, and/or jet needle, and go with a smaller SJ.
My tests for my slow jet are showing this:
42SJ = 1/4ish turns out for fuel screw
(Most power uphills)
40SJ = 3/4ish turns out for fuel screw
38SJ = 1-1/4ish turns out for fuel screw
35SJ = 2-1/4ish turns out for fuel screw
(Least power uphills,)
My test results for my MJ are this:
<92 MJ = very bad lean bog
92 MJ = hits rev limiter easily
(relatively, lol)
95 = more power uphills, I think less power above 7.5k rpms, and gets worse the faster the engine goes, really hard to hit rev limiter
98, 100 = more power below 7.2-7.5k rpms, much wosre above 7.5k rpms.
Some of my questions are: which SJ do you think I should use, and how bad is it to have a bigger SJ with my fuel screw in, since I get more power up hills?
Any tips for modifying or upgrading the needle jet, or jet needle? What else do you have to suggest? Thanks for your time and help.
Bike's current location: Albuquerque "ish", NM (5,335 ft. elevation)
Bike: 2015 Honda Ruckus.
Modds: Heavily ported and polished the carb (inlet, outlet,vacuum chamber inlet, vacuum chamber, vacuum slide chamber, even float bowl area, lol). Heavily P&P intake manifold, carb boot. P&P stock exhaust inlet. Modded stock air box cover (completely opened up "snorkel" and outer "vents"
Current Carb settings: 42SJ, 92MJ, 1-1/2 cuts on carb spring, (x1) 2.5mm washer/shim on needle.
Future work: going to try the 2003 Honda ruckus jet needle (curious what the difference is), more diaphragm springs (I think my best test was at 1-3/4 cuts, but I'm going to play around some more), modifying some needle jets
, and maybe something else?
My opinion: bike is running about the best I have had it. I think there is room for improvement. The larger the SJ, the more power uphills (I'm guessing because more gas around 3.5k to 7.5k rpm). Each size smaller SJ significantly slows the bike uphills. HOWEVER, each smaller SJ is easier to set idle, the bike possible returns to idle quicker, and might smell less like gas. So I'm guessing I'm compensating for lack of fuel below 7.5k rpm with the larger SJ, but I should mess around with my needle jet, and/or jet needle, and go with a smaller SJ.
My tests for my slow jet are showing this:
42SJ = 1/4ish turns out for fuel screw
(Most power uphills)
40SJ = 3/4ish turns out for fuel screw
38SJ = 1-1/4ish turns out for fuel screw
35SJ = 2-1/4ish turns out for fuel screw
(Least power uphills,)
My test results for my MJ are this:
<92 MJ = very bad lean bog
92 MJ = hits rev limiter easily
(relatively, lol)
95 = more power uphills, I think less power above 7.5k rpms, and gets worse the faster the engine goes, really hard to hit rev limiter
98, 100 = more power below 7.2-7.5k rpms, much wosre above 7.5k rpms.
Some of my questions are: which SJ do you think I should use, and how bad is it to have a bigger SJ with my fuel screw in, since I get more power up hills?
Any tips for modifying or upgrading the needle jet, or jet needle? What else do you have to suggest? Thanks for your time and help.
