Honda Spree and Elite 50 Forums

Hawaii actually rains a lot. It may not rain for extended periods but the humidity we have does some really evil things to your carb's jetting. The cover can be cut, we use bandsaws to make a clean cut which exposes the rear half of the trans/clutch bell. This is important for us since heatsoak is c...

I'm sure it will. that's only about 1.5 mm difference I think.

Make sure you invest in a CHT gauge at some point. Grats on your purchase.

The airbox is designed to allow a certain amount of air at max capacity, at some point the demands on the airbox will be so severe that you'd have to start drilling holes or something of that nature to increase it's breathing ability. The foam material isn't much of a restriction however oiling it a...

............. There is another contributor to the popping sounds you hear in a exhaust system in a car called reversion. That's a condition that starts with the exhaust system being pressurized with more exhaust gas velocity and volume (from pushing on the throttle) and the driver suddenly lifts of...

Arnadanoob, Something else to factor into that is the exhaust being tuned to the mods. If you've modded the cylinder and jetting, you're "front loaded". The exhaust is going to be resonating exhaust back to the cylinder for "refire?" or reburn? I'm over my head now, but seems th...

Good examples of lean conditions but let me reinforce that 4 stroke analogies most often times does not apply to 2 stroke engines. 4 stroke engine valvetrains are much more efficient in controlling intake charge delivery and exhaust gas evacuation. On a 4 stroke engine you can completely eliminate o...

I'm glad you figured to try a different plug. :wink: Moped engines in general like this. A backfire is usually something that sounds violent with a loud noise that's usually heard through the carb. The cause is usually due to ignition timing. If the keyway of your flywheel/crank gets stripped and th...

By your explanation, using too hot of a plug should raise my temps (makes sense), but my temps are low. Yesterday I had it to 60mph quite easily. Today, it will barely accelerate down the alley. I checked the plug too. There isn't any signs of overheating either. Jeremy The spark plug's heat range ...

Why I don't like relying on only plug chops for final tuning. Plug chops are mostly for getting a general idea not for taking accurate air-fuel checks for the final steps of tuning. When you have a new pipe, different carb, new intake manifold, etc. you can't tell what settings will work best so yo...

Your temps are similar to what we have here, it appears to be tropical weather with perhaps the differences being something like humidity which does affect jetting in a negative way. A 6 range plug is kind of on the hot side for the ambient temperatures you seem to have. On NGK spark plugs, the lowe...

As strange as it sounds I would expect the exhaust to be partially plugged or you have a carburator issue causeing the motor to be lean. I have looked at the carb carefully, and everything seems to be fine. The float measured out to 19mm-20mm and moves freely within the chamber. I can't find any va...

Excellent work.

Goods: Acceleration is EXCELLENT WOT RPM = 7700 Bads: RPM's "hang" after letting off throttle, essentially "pushing" the scooter (not a fan of this) Top Speed = 38mph Summary: Essentially seems that the scooter starts off in 1st gear, shifts smoothly but stays in 4th gear (5spee...

Some folks make the mistake of adding too much oil without upjetting during break in. Go rich on the slow circuit (pilot jet, air screw) and avoid using throttle beyond 1/2 until you complete the heat cycles. With a stroker you shouldn't need to use any more than 1/2 throttle to get anywhere. No hil...