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Post by rcq92130 on Jul 17, 2015 15:00:03 GMT -5
So is the goal to route the tube under thebar then out. Or to route it away before it gets to the bar? Also how to you secure it from bouncing? Im worried itll move around and crack my intake unless I secure it. The crossbar doesnt seem like a good idea to secure it too cuz itll move in relation to the engine/swingarm. MOST IMPORTANT --- READ THE LAST PART !!! I think you said you have a 150. I think 50's are the same, but not sure. Anyway, this is for a 150: This is a photo FROM THE BACK of the scooter, looking forward from just above the rear tire toward the carb. You can see the cross brace which bows upward. The carb sits so the intake comes out UNDER the bowed part, so you want to attach to the carb inlet with a tube than goes under the arch. You then want to angle it toward the side so (1) the back when doesn't hit the tube or filter when you go over a big bump; (2) as George said, to get toward cold air. That means angling toward the left (since the right is where the hot muffler is):  This is just a 2 inch (I think) piece of muffler exhaust pipe that the guy bent into an angle that best fits my scooter. Cheap, smoothest inside walls (for best air flow). You also asked about mounting. Like you, I first tried zip ties but was way not happy with the result. So, I took a little flat piece of steel back to the muffler guy and had him weld a little brace on. Drilled a hole in the bottom of the brace and it screws into a screw hole on the crankcase right next to where the starter motor bolts on. See here:  THE LAST PART !If you have a 150 you FOR SURE are going to want to put a bigger carb in. I run a 30mm carb (compared to stock 24mm); George - who has the fastest scooter in the Western Hemisphere - runs a 34 mm carb !!!!!!!!!! George's scooter is so fast a former Moderator here called him a liar when he (George) reported how fast he was achieving ..... until George showed a video of a 20 minute long ride, with GPS speed showing he was hitting between 65 and 70 for long stretches of road. So before you go very far with your scooter you are going to want to give it bigger lungs (esp. when yuo get around to a bigger piston). So why is that important now? A bigger carb has a bigger INLET DIAMETER! So, whatever thing you cobble together now will not be of any use once you stick a better carb in. Best to sort thru THAT issue before getting to far downstream with filters and intake tubes you end up not using. Anyway, a word to the wise (not preaching)/. ps: GOOD GOD!!!! My scooter looks like a dirty pig pen back there! Damn this so. Calif drought. |
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Post by jtron on Jul 17, 2015 16:58:31 GMT -5
Let me know if you find a good way to secure it. If nothinh works we can get the metal intake but id rather not spend another 20 bucks
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Post by jtron on Jul 17, 2015 17:07:24 GMT -5
Nvm! Didnt see yhat last post. I think il do something similar I have some sheet metal laying around. Im not planning on going for a larger piston unless I need to rebuild my engine so I think my 24mm carb should suffice for now. With my bigger exhaust header and free flow exhaust I went from like 52mph to 60. Iy seemed to get to 60 faster with a 108 jey but I didnt wana blow it up so I went to 110 and It takes a long time to make 60. Hopefully with the uni and a114 or115 it will get to 60 faster. ill be happy with that honestly. Maybe in the future ill use a 28 or 30mm carb but if I can get it to cruise at 60 a little better with the stock carb ill be happy. When this engine craps out maybe ill get a bigger cylinder intake n carb who knows. 30seems like overkill on a stock motor but who knows maybe it would help. Anyone else running a 30mm without a big bore?
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Post by geh3333 on Jul 17, 2015 17:55:16 GMT -5
You should see my scoot !! , it really needs a bath.
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Post by geh3333 on Jul 17, 2015 20:38:15 GMT -5
Nvm! Didnt see yhat last post. I think il do something similar I have some sheet metal laying around. Im not planning on going for a larger piston unless I need to rebuild my engine so I think my 24mm carb should suffice for now. With my bigger exhaust header and free flow exhaust I went from like 52mph to 60. Iy seemed to get to 60 faster with a 108 jey but I didnt wana blow it up so I went to 110 and It takes a long time to make 60. Hopefully with the uni and a114 or115 it will get to 60 faster. ill be happy with that honestly. Maybe in the future ill use a 28 or 30mm carb but if I can get it to cruise at 60 a little better with the stock carb ill be happy. When this engine craps out maybe ill get a bigger cylinder intake n carb who knows. 30seems like overkill on a stock motor but who knows maybe it would help. Anyone else running a 30mm without a big bore? Honestly buddy, I think these scoots should come stock with a 26mm carb. So if you plan on staying with a stock bore , I'd at lease go with a 26-28mm carb. I only have a 58.5 mm bore compared to the stock 57mm bore, and I'm running a 32mm pumper carb. |
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Post by korn858 on Jul 18, 2015 14:13:08 GMT -5
Just to add a personal note here: I have a 28mm Mikuni (vm28-418) carb. Had it professionally installed with Ghee's uni set up (Thanks again George), and the shop mechanic, using the largest jet for this carb, needed to drill it out to accommodate the amount of air the engine was getting. I'm not as fast as Ghee, but I'm close. I think if I fly him out here, and he did some work with the variator weights it could be close.
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Post by geh3333 on Jul 18, 2015 16:49:34 GMT -5
It would be great to get our scoots together and work on them . get them all tuned in perfect . Korn , I'm really glad the uni setup worked out . would you happen to know about how many MPG you are getting ?
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Post by korn858 on Jul 18, 2015 18:23:52 GMT -5
I have no idea. It would be great to get together. You could tell me if this engine is built with Taiwan parts, or what, and perhaps what the transmission is made of. It did come with a Bando belt, so I was happy to see that. But the rest of the internals... I have no idea.
Now looking into the cost to fly a GY6, and family to Ca. We could start a go fund me page...lol
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Post by geh3333 on Jul 19, 2015 22:38:55 GMT -5
I have no idea. It would be great to get together. You could tell me if this engine is built with Taiwan parts, or what, and perhaps what the transmission is made of. It did come with a Bando belt, so I was happy to see that. But the rest of the internals... I have no idea. Now looking into the cost to fly a GY6, and family to Ca. We could start a go fund me page...lol Lol. Correct me if I'm wrong , but do you have one of the scrappy gy6 200 motors ? My memory isn't what it use to be , and I'm not even all that old , lol. I'm afraid to think of what it will be like in another 30+ years , lol. |
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Post by geh3333 on Jul 19, 2015 22:53:46 GMT -5
I know I've said this before , but it would be great to take these scoots on a cross country run " very risky , lol " furthest I've ever road was about 1.5 hr's one way, and that was with a bad oil pump !! I'm lucky I didn't cause any damage. It figures the first time I take it on a longer run I have an issue with it. Of course I did notice the higher oil temps before hand so It would have been my fault if something happened to it.
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Post by geh3333 on Jul 20, 2015 16:36:04 GMT -5
Lol. We should do a video of our scoots . see what the time from 0 to 40 . that would be fun . the app I use would be perfect. It records the video with time and mph at the top .
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Post by JoeyBee on Jul 21, 2015 21:45:06 GMT -5
I think the thread has a very good topic. But I think it has slightly strayed off topic.
I have a unifilter directly attached to my carb, and was thinking about adding the extender to push it out farther from the engine heat. But I have hesitated on doing the mod because of how it may change the dynamics of the air:fuel ratio.
How I see it, with the filter directly attached the amount being sucked in remains fairly consistent. Since the wind hits the front and rolls off the sides. However, with the filter protruding from the side, air would be forced into the filter at higher speed causing a imbalance in the air:fuel ratio. Now this would be corrected with additional carb tuning. And would the extension create vortexes within the tubing, and what would those disturbances have an affect on the air intake?
Plus, generally in my area the wind flows from south to north. That means my ride to work is slightly slower with more wind compared to from work to home. Would this difference in wind speed affect the ratio?
So I'm still wondering the benefits versus drawbacks. Or if I'm completely overthinking it.
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Post by rcq92130 on Jul 21, 2015 21:50:56 GMT -5
I think the thread has a very good topic. But I think it has slightly strayed off topic. I have a unifilter directly attached to my carb, and was thinking about adding the extender to push it out farther from the engine heat. But I have hesitated on doing the mod because of how it may change the dynamics of the air:fuel ratio. How I see it, with the filter directly attached the amount being sucked in remains fairly consistent. Since the wind hits the front and rolls off the sides. However, with the filter protruding from the side, air would be forced into the filter at higher speed causing a imbalance in the air:fuel ratio. Now this would be corrected with additional carb tuning. And would the extension create vortexes within the tubing, and what would those disturbances have an affect on the air intake? Plus, generally in my area the wind flows from south to north. That means my ride to work is slightly slower with more wind compared to from work to home. Would this difference in wind speed affect the ratio? So I'm still wondering the benefits versus drawbacks. Or if I'm completely overthinking it. The idea isn't to get the filter out so far it's into the airstream - just enough to get it away from heat. Only GEH (or his idol, Obama) would stick it out into the airstream. |
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Post by geh3333 on Jul 22, 2015 21:34:23 GMT -5
I think the thread has a very good topic. But I think it has slightly strayed off topic. I have a unifilter directly attached to my carb, and was thinking about adding the extender to push it out farther from the engine heat. But I have hesitated on doing the mod because of how it may change the dynamics of the air:fuel ratio. How I see it, with the filter directly attached the amount being sucked in remains fairly consistent. Since the wind hits the front and rolls off the sides. However, with the filter protruding from the side, air would be forced into the filter at higher speed causing a imbalance in the air:fuel ratio. Now this would be corrected with additional carb tuning. And would the extension create vortexes within the tubing, and what would those disturbances have an affect on the air intake? Plus, generally in my area the wind flows from south to north. That means my ride to work is slightly slower with more wind compared to from work to home. Would this difference in wind speed affect the ratio? So I'm still wondering the benefits versus drawbacks. Or if I'm completely overthinking it. The idea isn't to get the filter out so far it's into the airstream - just enough to get it away from heat. Only GEH (or his idol, Obama) would stick it out into the airstream. When I first installed mine , I had to ride in the left lane because my air filter would scrape the guard rail . I decided to just go with the setup in my pic. It sits just under the side plastic , but do sent protrude out past it. |
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Post by rcq92130 on Jul 22, 2015 21:46:45 GMT -5
The idea isn't to get the filter out so far it's into the airstream - just enough to get it away from heat. Only GEH (or his idol, Obama) would stick it out into the airstream. When I first installed mine , I had to ride in the left lane because my air filter would scrape the guard rail . I decided to just go with the setup in my pic. It sits just under the side plastic , but do sent protrude out past it. Scraped the guardrail, huh? I'm surprised Bambi didn't see and hear that monster swooshing down the road and retreat in full scale panic. Anyway, if you go up 4 or 5 comments you'll see a photo of exactly what you are talking about. |
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