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Post by lain on Nov 1, 2015 15:07:48 GMT -5
how are you measuring? I have jets from like 80 to 145. John I emailed the guy I ordered both carbs from and he let me know the threads were different sizes. I also tried and it didn't seem to fit right after the first like quarter turn of screwing it in. I will be needing a #  jet for 24mm carburetor (150cc carb) but can't find it without having to buy an entire kit of jets and I already know it was running slightly rich with the 100 jet on my 50mm bbk. |
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Post by lain on Nov 1, 2015 13:04:26 GMT -5
So I found out the answer, it is no. The larger 24mm carburetors seem to take .8mm threads while the smaller carburetors use .7mm threads.
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Post by lain on Nov 1, 2015 9:52:13 GMT -5
Hmm, maybe I'll save it and bolt it onto a sled over the winter, maybe see if I can make a gas powered street sled lol... Or maybe use it to make the first scooter engine powered water balloon rail gun, shootin water balloons up to 2 miles, the kids the next town over won't know where they came from ( loljk but could you imagine?)
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Post by lain on Oct 31, 2015 21:39:56 GMT -5
How do you guys get rid of your old engines? I'm about done with my main scooter's engine, it has over 40k on it and problems keep popping up every couple weeks and I've probably spent more on replacing parts in it than a new scooter would have cost haha. I'm sure I could get it to keep running but how long until the next problem arises, and the next? Also the cold season is upon us, not trying to break down and push it home in 30 degrees...
I will be rebuilding my spare 50cc engine with a new big bore kit so I have no worry about a new engine, but what should I do with the old engine? Save it for the apocalypse or should I just push it till it explodes and puts me in the hospital? lol
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Post by lain on Oct 31, 2015 19:45:05 GMT -5
Well the sound became so loud I can't even hear anything else and it still definitely sounds like it's coming from within the final transmission gears.. The performance still doesn't seem to be suffering but the noise is not fun at all. Going to tear it apart and check everything again, I didn't check the bearings last time so that'll be my main focus this time.
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Post by lain on Oct 30, 2015 15:45:05 GMT -5
Oh no don't get me wrong I always want all my stuff in top working order. I didn't explain my question correctly. What I ment was will it be ok you ride a few times before the new one comes. It's my work transportation and my wife needs the car this weekend. I just want to be reassured that I'm not going to do irreversible damage from a few rides. Do what you have to do really, but avoid riding it if you can, though it may not be too bad as long as there isn't a leak, but isn't it loud? |
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Post by lain on Oct 30, 2015 15:13:31 GMT -5
If you really don't want to buy a new one I have an identical muffler in great shape I bought secondhand and refurbished myself but was never able to use because I do not have the mounting equipment. PM me if you wanna buy it off me.
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Post by lain on Oct 30, 2015 14:42:42 GMT -5
If you do not want your ride to last long then ride it anyways, but if you care about your ride this wouldn't even be a question. If you have a problem, do not ride it unless it is to diagnose that problem. Replace the muffler, I usually go on craigslist and post an ad to look for one and get them cheap like $20 a pop, sometimes they are slightly rusty but can be brushed off with a wire brush and painted with rustoleum. If you do not want to refurbish a muffler then get a nice one from scrappy's.
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Post by lain on Oct 30, 2015 10:45:15 GMT -5
3 electrode spark plugs do not need to be gapped. Neither do the iridium spark plugs. Cool, I actually bought a ten pack of these off your ebay shop like almost a year ago haha. They are great. I did however gap one of them sort of, since one of the electrodes on one of the plugs was making contact with the middle I took a screwdriver and gently pushed a few times and got it off the contact and looked about the same gap as the other 2 electrodes. It's all good running strong with that same plug now. |
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Post by lain on Oct 30, 2015 8:48:59 GMT -5
The power issue is unrelated to the running issue unless the issue is the power is not getting to the spark plug. Did you check for consistent good spark? Take the plug out, put it in the boot and press the end of the plug against the valve cover or a bolt then turn the engine to see the sparks. MAke sure not to touch the plug, it will spark you too if you are haha.
Check the stator wires, make sure you have a strong connection, if it is loose use some tape to get it to stay together. Use a multimeter to read at the stator wires to see if it has enough voltage. The important wires for making the engine run is the red/black (that is what powers your CDI coil and plug) and the blue/white (this is for timing and is sometimes colored red/white instead) wires. The white and yellow are charging and lighting wires that go to the rectifier/regulator and lights and also are responsible for the power for your charging system.
If it ran worse with the air filter removed you either are running lean or have a dirty carb, or possibly the above problem is the cause (loose or bad stator wires or unit). You should also check your intake spacer for cracks, sometimes a small crack can be a big problem and cause an excessive amount of air to get in.
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Post by lain on Oct 30, 2015 7:51:07 GMT -5
Took it apart, no visible damages or anything in there that shouldn't be.... Put it back together still same problem... The noise is definately coming from the final gears though, before I installed the clutch and wheel I twisted the shaft to spin it and it was very very hard to spin, but all the gears looked fine out o the case so what is going on here... Is there something else in the final gears besides the gears I should be worried about? The shaft is not bent, there doesn't seem to be any visible damages.... :/
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Post by lain on Oct 29, 2015 19:11:13 GMT -5
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Post by lain on Oct 29, 2015 18:06:27 GMT -5
Is the variator stock? I had a stock variator on mine once and it had weird angled ramps that limited the output to about 35 for me which is not right since I get 55+ normally with non stock variators. I would also try 7.5g weights with 47mm bore and #  jet should be good enough to get you up to 40-50 depending on tuning and rider and scooter weight. Transmission can make or break a setup, if it can't transmit the power band correctly then you'll only waste gas haha. |
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Post by lain on Oct 29, 2015 18:03:21 GMT -5
So I have been noticing a slight squeak when taking off sometimes over the past few weeks that seemed to go away after warming up. I thought it was the clutch but I may be wrong.
Now I am hearing a couple new weird noises one of them is like a "wahwahwahwahwah" kind of wobble/wah sound coming from the final gears. I poked my head all over and the noise is definately coming from between the clutch and the wheel so that means final gears.
The other new weird noise is a very loud like louder than the engine noise like the wahwahwah noise when at about 45mph+ it is the most concerning because it is stupidly loud like scarey loud. I believe it is also coming from the final gears but can't be sure until I meet a hollywood stunt cameraman to trail and record me (like that will ever happen haha).
There is oil in the final gears, I even went ahead and drained and refilled to make sure I had the right amount too and no change.
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Post by lain on Oct 29, 2015 12:39:15 GMT -5
So I am using a 24mm carb on my big valve 50mm bbk setup. I want to use a # main jet but the only one I have is from a keihin 18mm carb. Can I use the main jet from the smaller carb or do larger carbs use larger threads? |
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jet for 24mm carburetor (150cc carb) but can't find it without having to buy an entire kit of jets and I already know it was running slightly rich with the 100 jet on my 50mm bbk.
jet should be good enough to get you up to 40-50 depending on tuning and rider and scooter weight. Transmission can make or break a setup, if it can't transmit the power band correctly then you'll only waste gas haha.