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Post by 90GTVert on Sept 11, 2011 18:31:24 GMT -5
Thanks man. Before you feel too bad, your "simple BBK" is about as fast as my 90cc project. lol
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lbo
Scoot Enthusiast
Posts: 141
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Post by lbo on Sept 13, 2011 7:47:15 GMT -5
A little update. That noise I was hearing is getting worse and occurs more often now. In addition while ridding at low speed I was getting another noise at a certain rpm when I hit it just right. A third noise I have noticed is what sounds like a bolt rattling at idle when I first start it up. Not sure where it was coming from. Could that be a "knock" within the engine? That slide needle is set on the top notch so I know it runs a little lean at idle, maybe I should put that needle back in the middle notch. I took the shroud off the cyliner to double check the head bolts were still torqued properly and that there were no visable leaks around the base of the jug. All of that checked out fine. Anyway that noise I think is coming from the manifold. It has an outlet for the oil injection, I took it off and tried to seal it with RVT silicone gasket maker. I have a feeling air is getting through at higher RPMS and creating what sounds like paper tearing. Maybe it's just additional air sneaking through.  Solder didn't work, didn't stick to the aluminum. What is the best way to seal this up? Stick a sheetmetal screw through it? |
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Post by 190mech on Sept 13, 2011 9:16:13 GMT -5
J-B weld epoxy!
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lbo
Scoot Enthusiast
Posts: 141
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Post by lbo on Sept 13, 2011 9:26:45 GMT -5
Good idea, thanks. I have some of that laying around too.
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lbo
Scoot Enthusiast
Posts: 141
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Post by lbo on Sept 15, 2011 18:04:45 GMT -5
I had what I thought was JB weld, two syringe type tubes, in my tool box. Mixed it up and put spread it over the hole after I removed the gasket stuff. After it didn't dry over a 24 hour period I am wondering what it was, print on tube is old and smeared but maybe I didn't mix it right. It's stilll wet.
Anyway I noticed the gasket below the reed cage was worn and old. Thinking that could have been the source of an air leak and the sound I heard at WOT. I had a gasket for the manifold, cut it to fit and used some AVT silicone to seal it tight.
That's all bolted up. Still looking for an exhaust, Tecnigas RS-II in chrome seems to be the only available pipe for this scooter and a little bummed. The RS-II while nice not excited about chrome. Also waiting on the S1 needle. Think I found the "bolt rattle" as a bolt for the fan shroud wasn't secure. Noticed I am dripping gear oil and my top "fill" bolt is stripped, it is threaded but doesn't tighten and dripping. I drained it got a good amount of oil out and refilled, put a clean towel underneath this AM an it is soaked. So I guess I need to helicoil that.
Just a few minor hiccups, hopefully I sealed that possible air leak and will be able to find a pipe for it.
Top speed so far (GPS) is 54.25MPH, about 6MPH faster then the 50. I just get there quicker now.
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Post by Reign on Sept 16, 2011 9:06:23 GMT -5
About the gear oil fill, is it the case that's stripped, or the cap? If it's the cap, you can get a new cap for a few bucks. If it's the case, well, that's a bit harder.
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lbo
Scoot Enthusiast
Posts: 141
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Post by lbo on Sept 16, 2011 13:02:46 GMT -5
Yeah the case, the bolt goes in fine but doesn't tighten. Luckily it's the top fill bolt, not the bottom drain. I used some helicoils for the CVT cover threads that got stripped and not so concerned, just a pita and another thing to fix lol
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Post by 2strokd on Sept 16, 2011 17:04:17 GMT -5
Another thing to add. The gearbox only takes 100ml of oil. If it is coming out of the fill plug with the scooter sitting level it is over-filled.
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lbo
Scoot Enthusiast
Posts: 141
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Post by lbo on Sept 16, 2011 18:46:59 GMT -5
Thanks. Part of the reason I am not so concerned. When I drained it I had a good amount of old oil come out. New problem I need help with. This is something I haven't yet messed with and don't see a simple solution. I looked at the S9 service manual and didn't see a schematic either. Got my slide needle and was I was putting it all back together when I got to putting the oil cable back on. Gave it a slight tug because it felt like it was hung up, nect thing I know it gives. Where the cable splits and hooks up to both the oil cable and carb cable came apart and don't know how to re-attach. Might seem trivial to experienced tuners but I can't seem to figure it out. How do I put this back together?  Seems like the cable ataches somehow to the section carrying the other two. Not seeing how, did I break something? Do I have a missing part here?  |
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Post by 2strokd on Sept 17, 2011 7:56:59 GMT -5
Not sure on that one. Never had it apart :dunno:
Looks like it maybe missing a piece though?
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Post by 90GTVert on Sept 17, 2011 9:29:08 GMT -5
I'd think it has to be missing a piece. Not familiar with that style, but I can't see how you'd take 3 of the same ends like that and connect them without some sort of adapter/coupler at least.
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lbo
Scoot Enthusiast
Posts: 141
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Post by lbo on Sept 17, 2011 10:52:31 GMT -5
I played with it and got it together. Deep in the tube on the single cable side (from grip end) there is a metal peice with two slots that hold the other cables. It wouldn't come out but I got to the end as far as possible. Took the oil injector side off, took the carb slide apart to get slack in both those cables and worked it in the slots. Then put it back together.
Wasn't the easist thing to do but got it done.
Finally got it running after getting my new slide needle. Idles nice but give it gas and nothing, then it would catch and accelerate. Thinking I have some dirt in the carb maybe.
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lbo
Scoot Enthusiast
Posts: 141
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Post by lbo on Sept 18, 2011 12:29:15 GMT -5
Need a little more help here with tuning.
Got the S1 needle for my Arreche carb. It has a much fatter taper then the 01 that came with it. Trying to dial in the PJ first.
I set the Fuel screw to where I think it should be, a full two turns out. Two full turns out is getting close to the point where they say to go up 1 size with the PJ. I still get hesitation when I apply throttle, not a sputter, more of what seems like a lean condition. In fact when cold it would just bog down and die unless I let go of the throttle. I do a plug chop a 1/4 throttle and it looks "grey" not caramel almost rich. It even backfired on me (thinking that is rich right?) when I tried to accelerate. Thinking it was a backfire, unless there is a lean condition that sounds like a backfire or a "pop". So I am thinking it might be lean. Idle is highest with the fuel screw two turns+ out.
Anyway, my question is would it be better to move the needle down one notch (richer setting) before going up one size with the PJ?
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Post by Thebatman on Sept 19, 2011 10:40:45 GMT -5
Moving the needle DOWN will lean it, correct?....not richen it...
This is the sdame issue i was having with the S1.. I was told to try a complete different set up for the S1 but with a 95mj, i guess i was real lean, SO how in the world would a 80 be right?
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lbo
Scoot Enthusiast
Posts: 141
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Post by lbo on Sept 19, 2011 10:58:06 GMT -5
Yeah, I meant move the clip down one notch to the bottom so it raises the needle and richens it.
I did that and wow, I hit the sweet spot! Seems as though the engine is producing more power too, it hums nice without hesitation or gurgling and acceleration is noticably quicker. So on mine (with a moified airbox) I am running the S1 needle, bottom clip, with a 20PJ and a 90MJ. I wonder what would the 25PJ and the needle back in the middle do? I am done trying to mix and match and re-configure. I am getting nice looking plug chops and great performance.......... still need to double check the plug a 1/2 throttle, only one I haven't looked at yet.
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