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Post by niz76 on Sept 15, 2014 10:25:17 GMT -5
Take another hit of that scooter crack.... muwahahaha
Sent from my XT603 using Tapatalk 2
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Post by 2TDave on Sept 15, 2014 10:59:28 GMT -5
If you order a variator make sure you get the correct spline size. 13mm or 16mm. I'm guessing it's the larger but confirm it.
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Post by jhobe6678 on Sept 15, 2014 11:14:43 GMT -5
If you order a variator make sure you get the correct spline size. 13mm or 16mm. I'm guessing it's the larger but confirm it. Yeah, I was wondering that myself. I'll measure first before anything I'm sure. I've already bookmarked the variator, exhaust and a jet kit. I have a feeling my PS4 is going on eBay this week. |
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Post by jhobe6678 on Sept 15, 2014 11:15:12 GMT -5
Take another hit of that scooter crack.... muwahahaha Sent from my XT603 using Tapatalk 2 *grabs lighter* It's on! |
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Post by niz76 on Sept 15, 2014 12:32:26 GMT -5
If you order a variator make sure you get the correct spline size. 13mm or 16mm. I'm guessing it's the larger but confirm it. Lol Jhobe! Dave sounds like you were the scoot hero! That's awesome!, kudos to you brother! Partsforscooters labels the 13mm spline Hoca variator "49cc", and the larger 16mm spline one "90cc"... They are both the same- the 90cc one just comes with the bigger spline hole in the ramp plate. They also use larger than stock roller weights- 16x13 vs. the stock 15x12. TIP: stock GY6 roller weights are the size you'll need: 16x13. |
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Post by jhobe6678 on Sept 15, 2014 12:42:40 GMT -5
If you order a variator make sure you get the correct spline size. 13mm or 16mm. I'm guessing it's the larger but confirm it. Lol Jhobe! Dave sounds like you were the scoot hero! That's awesome!, kudos to you brother! Partsforscooters labels the 13mm spline Hoca variator "49cc", and the larger 16mm spline one "90cc"... They are both the same- the 90cc one just comes with the bigger spline hole in the ramp plate. They also use larger than stock roller weights- 16x13 vs. the stock 15x12. TIP: stock GY6 roller weights are the size you'll need: 16x13. Absolutely, Dave was the hero. I ow him a 6 pack or something now I think.  Niz, good advice. Thanks. I'm going to measure it anyways but it does look to be about a 13mm spline. I'm guessing you measure the very outside of the splines and not in the groves, right? I have to keep telling myself, there's no such thing as a stupid question. Especially when you're building a machine that cranks up to 9,000+ RPM. I keep having nightmares of a piston flying out like a roman candle past my legs. *sigh* |
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Post by jhobe6678 on Sept 16, 2014 10:37:57 GMT -5
So today I ordered a new exhaust gasket (Sorry 2TDave) and the exhaust studs/nuts. After doing what Dave suggested, I noticed the bolts holding the exhaust on there looked funny. As in one had 1 washer, 1 had 2 washers and they weren't sitting right either way. I figure the stud option would be best and the new exhaust gasket will make a better fit. I also ordered a 10 pack of Mikuni Carb Jets too, just in case. I almost ordered the vari since I'm pretty sure it's a 13mm shaft, but I want to make damn sure so I'll wait till I can get to it maybe this weekend to measure it. The GF said it sounded like crap again at idle yesterday but it seemed to run fine? I'll listen to it later tonight, among my ten other projects I've got going on at home with the car and other things. *sigh* It's rough sometimes because I don't have a garage so catching Malaria is a risk down here.  |
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Post by jareeb on Sept 16, 2014 11:16:32 GMT -5
get her running the smoke will keep them away  |
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Post by 2TDave on Sept 16, 2014 12:05:05 GMT -5
I'd be surprised if it's a small spline crank but it's possible. It's not good running these with a exhaust leak at the cylinder. It can cook a piston. I had a Triton recently that the po had bent the exhaust flanges over tightening. The only way I got it to seal short of buying a new exhaust was by using two gaskets. Not the best setup but it worked. I didn't notice your flanges being bent but double check.
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Post by jhobe6678 on Sept 16, 2014 12:54:49 GMT -5
I'd be surprised if it's a small spline crank but it's possible. It's not good running these with a exhaust leak at the cylinder. It can cook a piston. I had a Triton recently that the po had bent the exhaust flanges over tightening. The only way I got it to seal short of buying a new exhaust was by using two gaskets. Not the best setup but it worked. I didn't notice your flanges being bent but double check. They didn't appear to be bent, hence why I didn't want to keep tightening it. I'll check again. I too may also use both gaskets just to be safe. It's a project getting it on and off the patio with that damn loose dirt I have around it. But yeah, I want to check the bolts tonight if I can too. I never got to tighten them after she drove it. |
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Post by niz76 on Sept 17, 2014 0:52:03 GMT -5
I have had 3 Minarellis now since the Baccio (well, two minarellis and an Adly) and the only one with the small 13mm spline was the Baccio... I broke two bolts trying to tighten the exhaust flange to the cylinder on my Baccio. I learned it's neccessary to loosen (if not remove) the hanger bracket bolts at the back by the fan (fender is connected to the exhaust hanger bracket) then tighten the exhaust up to the cylinder... Then re-install the hanger bolts of course. I also use the flat exhaust gasket from partsforscooters... it's great! |
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Post by jhobe6678 on Sept 17, 2014 5:44:44 GMT -5
I have had 3 Minarellis now since the Baccio (well, two minarellis and an Adly) and the only one with the small 13mm spline was the Baccio... I broke two bolts trying to tighten the exhaust flange to the cylinder on my Baccio. I learned it's neccessary to loosen (if not remove) the hanger bracket bolts at the back by the fan (fender is connected to the exhaust hanger bracket) then tighten the exhaust up to the cylinder... Then re-install the hanger bolts of course. I also use the flat exhaust gasket from partsforscooters... it's great! Yeah, I noticed the brackets had to be loose too so I kept them that way. Right now I'm using a copper gasket from Dave since the other one he gave me got super squished and deformed.  I also had to straighten out one side of the flange too. It sits nice and flat now, but I feel like it's not 100% so when the new gasket shows up, I'll be installing that with the studs. Keeping my fingers crossed. |
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Post by jhobe6678 on Sept 19, 2014 20:02:34 GMT -5
So I went and picked up a better charger, one that charges THEN maintains. So the battery should be full by morning. So I got enough juice in the battery to start it (First start and up she goes, yay!) then disconnected the charger. I hooked my meter up to the battery and poof, no charge from the scoot. The voltage rides below 12v and slowly dips down as I rev it up. So that will be something to look at tomorrow when there's light out and no mosquitoes.
But here's another problem, which may be related... Gas Mileage is HORRIBLE on it. WTF? Maybe I'm running it too rich, but I topped off the tank last night for the GF, she drove maybe 30 miles and it's above E. I don't expect 100mpg out of this old beast, but just over 30 miles to a tank? She has to drive it tomorrow so I'm charging the battery AND just got more gas. Also bought a nice cheap little cup for the oil to measure and pour into it. So... Any ideas are welcome. I saw Brents videos on checking the charging system so I'll be checking the rectifier (Rectum, damn near killed em!) and stator tomorrow I guess. After I tighten the exhaust and head of course. Or before. It doesn't matter.
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Post by jhobe6678 on Sept 20, 2014 19:45:42 GMT -5
Tonight I got a chance to right some wrongs I had done. I checked the voltage, per Brent's advice in my post about charging. Seemed ok, till I plugged back in and the RMP went down. I shut the scoot then started it again and it was hard to start. Once I got it started it was idling rough (well rough as usual) then I unplugged the 3 prong connector from the Stator and the RPM came up a little? WTF? Bad Stator or Rectifier? And where's the rectifier? In the body? Boo!
I do have good news. I FOUND THE MANUAL FOR THE MOTOR!!! So I not had torque specs! I torqued the exhaust down and the cylinder bolts as well. I took the intake and reed valves off. I removed the old paper gaskets, sanded down the intake and cleaned it real well. I checked the reed valves from what I read here, for light escaping in. There was a little. So I took them apart, bent them a little in and put it back together. Looked better, straight and flat. I put the new gasket, reed valve, gasket, intake all back on. I made a booboo when I started it because I forgot to reconnect the carb so the scoot had a burst of power from the brake cleaner I sprayed around the intake then died. Nearly went through the front of the house hahaha. I put it back together and viola. She runs. I still hear that knocking though, just like a slight rough idle. So I did as Dave said. I got a little spray bottle of soapy water and sprayed around the exhaust. No bubbles. So that means no melted cylinder. But what's the noise still? I also took the new compression tester and hooked it up. Still only maxing out at 30psi? I must be doing something wrong. I did the electric start, throttle open, then manual kick, throttle open. So I may need some assistance on this. I'll barter services and tools!
I sat right in front of the fan/stator/magneto. Yes, the shroud was on while it was running, I wouldn't run it without at least ONE half of the shroud. It seems like the noise is coming from back there behind the fan?
So now I'm wondering if it's a bad crank bearing on that side? It is only at low idle and the motor revs smooth.
The electrical problem is odd. Any ideas? Should I replace the Stator and/or Rectifier too? I actually wouldn't mind replacing both. I'm anal about a good electrical/charging system on a vehicle. It's the 2nd most important system next to the fuel/emissions. So I'm thinking that maybe the electrical issue is why I'm blowing through gas too. I had that happen to my KIA when the alternator was going out. It was sucking gas like crazy, I guess because the spark wasn't enough? Or maybe I was hallucinating. Maybe the Stator is the source of the noise? Could it be?
And finally, I picked up a gap / feeler gauge from Harbor Freight while I was there. So I checked and corrected the gap on the plug.
So that's the stage I'm at now. It runs, but I feel like it can run better as it is. I still want to get the BBK and CVT tuned, maybe even thinking of replacing the clutch since there's nearly 5k on this thing and I have no idea how they treated it before.
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Post by 2TDave on Sept 20, 2014 20:19:50 GMT -5
Next time you have the fan side cover of make sure the flywheel isn't hitting the ignition pickup. I'm not sure what the speck is for the gap between the two but that could be a source of the noise.
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I also had to straighten out one side of the flange too. It sits nice and flat now, but I feel like it's not 100% so when the new gasket shows up, I'll be installing that with the studs. Keeping my fingers crossed.