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Post by Reign on Sept 14, 2009 21:24:39 GMT -5
I'd consider a 150cc GY6 swap before I'd go over to a 250cc. I'm not really familiar with the 250s, but I know that there isn't much performance stuff and they are gonna be big enough to cause you lots of trouble trying to fit into a Triton. If you absolutely must go 85MPH, I'd consider selling what you have and buying a new 250cc. Get your M license and tags and insurance. If you think it's cheaper to just swap it in, you might think otherwise when you get pulled over. I can't imagine a 250cc is just gonna fit and look stock and I'm pretty sure you aren't getting away with cruising at the speeds a 250 is capable of for long. It's bad enough going over 50MPH with a 70cc kit and getting on the brakes as fast as you can when you see a cop. They're gonna notice a 49cc doing 80+MPH for sure. Then you could be looking at an impound, unregistered mototrcylce, driving without an M license if you don't have one, driving an unisured vehicle, speeding, and whatever else the officer might feel like. Just a bit to think about before you jump into a deal on a 250cc engine you may find somewhere. I started thinking the same thing. though, it is registered, but not as a motorcycle, only as a moped. As for uninsured, WI doesn't have a law about insurance. Though I see where you're coming from. Like my dad says, if you're going to break the law, only break one at a time I've decided to just grab a 70cc kit, seeing thats the ONLY thing I haven't done yet.
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Post by 90GTVert on Sept 14, 2009 21:59:37 GMT -5
The only thing you haven't done yet would be my first choice. I think you'll be pleased.
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Post by 2strokd on Sept 15, 2009 7:26:47 GMT -5
What kit are you going with? Like night and day going up 20cc,s or so. I built a 2t 200cc quad years ago. I put everything i could think of on it for more performance and nothing made a difference like the bb did. But having it all (pipe, carb,cvt tuning parts, etc) before the 70 kit will help keep it cool and help to tune it proper for a better life span. Heck im still getting mine ready for the bb kit thats already on it lol.
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Post by Reign on Sept 15, 2009 8:39:31 GMT -5
I was thinking a Polini kit, because thats what you have, and you seem to be having good luck with it. Otherwise, what would you recommend? I'm looking for something not overly expensive, about $200 would be my limit right now.
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Post by 2strokd on Sept 15, 2009 9:14:34 GMT -5
I think Polini makes a great bb street kit, i pretty much toasted mine and it still runs great! I cant say much for any others for lack of experience with them. I can only tell you what ive read. I think a Polini sport kit is a great choice, they have a good reputation for reliability and i can back that from experience. They will tolerate some abuse thats for sure. You can get a sport kit from Scooter-Attack for less than $200. Thats the only place i have seen em for under $200, i havent looked hard though.
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Post by Reign on Sept 15, 2009 9:35:09 GMT -5
I'll do some shopping around for a Polini Sport kit then. what size stock wristpin do these engines have? I know a Triton R4 is a CPI Hussar, but they have "pre 2003 10mm" and "post 2003 12mm"
EDIT: I just remembered that Enviromoto quoted me at $185 for a Polini Sport about a month ago. If he has any in stock yet, I think I'll order one from him.
EDIT AGAIN: i guess the $185 quote was for a Polini Corsa. Polini Sport is quoted at $165.
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Post by 2strokd on Sept 15, 2009 11:54:32 GMT -5
Both are great kits, you need the 12mm pin if you have an 05. Get it from Jeremy, i forgot that he quoted me the same back when i ordered mine. Those are good deals. If you arent ALL for the low-end punch the sport kit offers go with the Corsa, Its got more HP up top from what scoot attack says. I would be curious to hear how well that kit performs. Looks like Scooter attack is out of the Corsa kit for now, so if Enviromoto has one ide grab it.
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Post by Reign on Sept 15, 2009 12:15:20 GMT -5
I went with the sport kit. He has to order it from Germany, but I should have it in 1 or 2 weeks.
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Post by 2strokd on Sept 15, 2009 12:36:23 GMT -5
Sweet ;D!! Congrads on the first bb kit , have a bone! I think you will be very happy. Make sure to have extra jets ready and well ya know...Have fun ;D!
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Post by Reign on Sept 15, 2009 13:47:37 GMT -5
Yep, I still need to order some extra jets, and some 2000 rpm clutch springs. I'm running 1500's right now. I have the design a new exhaust bracket while I'm waiting for the bb kit. I just went out for a ride and I have an exhaust leak at the exhaust port. It looks like the whole exhaust shifted forward about a millimeter, making a leak. I already have a good plan for the bracket though. Shouldn't be a problem. thanks for the bone! ;D EDIT: I took off the existing bracket to remake it, and went to tighten up the exhaust bolts underneath, and one of them was halfway unscrewed. I tightened them up and went for a ride. Now I feel like an idiot. I think MOST of my "not enough power" issues were because I had never tightened those bolts up enough to begin with. It sounds a lot "smoother" now, because the exhaust is going through the pipe, instead of out the sides. the throttle response is amazing. I have a lot more takeoff power too. I revved the engine when I tightened those bolts back up, and the back tire spun on the ground Now I'm like "DAMN! I can't wait for that 70cc kit!" I think it's safe to say that I can beat my moms Honda Metropolitan off the line now
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Post by 2strokd on Sept 15, 2009 15:46:34 GMT -5
lol, awsome ! Ya gotta check those exhaust bolts periodically, they can shake loose after time, mine did too. Some locktight helps there too. Those clutch springs will help allot on take off. I have the 2k,s and i want even more so i was thinking crazy again. Wonder if i can get away with welding a couple of the spring loops together to make it even tighter? Sound like it would work? Or do ya think it would break and trash the clutch?
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Post by Reign on Sept 15, 2009 16:13:36 GMT -5
lol, awsome ! Ya gotta check those exhaust bolts periodically, they can shake loose after time, mine did too. Some locktight helps there too. Those clutch springs will help allot on take off. I have the 2k,s and i want even more so i was thinking crazy again. Wonder if i can get away with welding a couple of the spring loops together to make it even tighter? Sound like it would work? Or do ya think it would break and trash the clutch? Well, you can try it if you want! I wouldn't use welded springs in the long term, but just for testing, why not? Have some fun while you can ;D I'm thinking of grabbing a 85 and 87.5 mainjet, and some 3 gram rollers too. what do you use for rollers?
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Post by 2strokd on Sept 15, 2009 16:19:14 GMT -5
I dont use rollers, i use Dr,pulley sliding weights 4.5g. They work great i love em. 3g might be a bit to light unless your talking about mixing them, but every tune is different.
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Post by Reign on Sept 15, 2009 16:22:37 GMT -5
Alright, otherwise I'm running 4 gram rollers right now, and I have some 4.3 grams that came with my LeoVince. Think I should stick with the 4 grams? Or better yet, should I spend the money on some Dr Pulley sliders?
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Post by 90GTVert on Sept 15, 2009 22:45:40 GMT -5
I have the 2k,s and i want even more so i was thinking crazy again. Wonder if i can get away with welding a couple of the spring loops together to make it even tighter? Sound like it would work? Or do ya think it would break and trash the clutch? Have you lightened your clutch shoes yet? That would be a better idea IMO. 49ccscoot.com/lighten.htmlReign, I know 2strokd is gonna tell you to go with sliders. He keeps trying to get me to buy them. lol No means no. Don't let me turn you away from 'em. I wanna try 'em, I'm just too cheap to spend the extra money on sliders compared to rollers.
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Post by 2strokd on Sept 16, 2009 8:20:46 GMT -5
Alright, otherwise I'm running 4 gram rollers right now, and I have some 4.3 grams that came with my LeoVince. Think I should stick with the 4 grams? Or better yet, should I spend the money on some Dr Pulley sliders? Im thinking with extra power you will have thanks to Polini you should hold off on rollers until you get the motor tuned and broken in before you tune the CVT. The sliders are up to you. I have switch back to rollers just for the tune of it and they sucked compared to the sliding weights. I tried all diff weight combo,s of rollers trying to at least get the same or close to how the sliders perform. Nope, no luck here, the sliders up and downshift better all around for me. And no more of those pesky flat spots. I have had these in for months with no sign of wear yet They are pricey though and that makes it hard to buy em unless you know exactly what weight you are shooting for. Your body weight plays a huge factor also. When i tune a cvt for someone else i get their weight and add it to the scooter. Im only 155 now so im usually adding weight. I use my iron weights for working out and just put em on the floorboard and take it easy on the turns lol
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Post by 2strokd on Sept 16, 2009 8:27:24 GMT -5
Vert, I did lighten them a bit back when i put the springs in, maybe i will do some more clutch dieting first. If that doesnt cut it, you think some welds will hold this spring steel? Im shooting for about a 6or7k launch . Right now its about 4,500 cold when the clutch kicks in, but drops a bit after warming up. My only worry is a spring breaking and ruining a shoe or two. Maybe i should wait until i have a spare clutch to play with
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Post by Reign on Sept 16, 2009 8:34:28 GMT -5
Hmm. I'm starting to lean towards the sliders. I'm about 145 lbs, so should I stick with 4 grams? Where's the best place to get sliders from? I did a google search yesterday and it seemed to be pretty difficult to find them.
EDIT: found them on ebay from the same guy I was thinking of getting my clutch springs from. is $15 + $4 shipping a good deal? if only he sold mikuni main jets!
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Post by 2strokd on Sept 16, 2009 9:24:14 GMT -5
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Post by 90GTVert on Sept 16, 2009 9:35:57 GMT -5
You should be able to get the clutch to hit after 5K RPM at least with 2K springs and lightening. If you get a little more aggressive than I did, I would imagine 6K is possible. I'm sure welds can be made to hold, but I have had a clutch spring snap and ruin the clutch and bell before. That sucks and I don't recommend it to anyone, so be sure you get a good weld and pray that the springs can deal with stretching that much more if you gotta do it.
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Post by 2strokd on Sept 16, 2009 15:25:14 GMT -5
I think i will lighten it up more , i dont have a spare if the weld didnt hold. Maybe another day
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Post by bcronk09 on Sept 17, 2009 15:28:20 GMT -5
I just bought a 2005 CPI Oliver City. Doesn't my bike have pretty much the same engine as the MZ50? If so, I'd like to know if you have any tips for me as far as tuning. I'd like to see what kind of speed I can get out of a 50cc 2T before I go to the 70cc. This is my first 2T bike so I want to start from the beginning and enjoy the learning curve.
Thanks Dawgs!
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Post by Reign on Sept 17, 2009 16:51:49 GMT -5
I just bought a 2005 CPI Oliver City. Doesn't my bike have pretty much the same engine as the MZ50? If so, I'd like to know if you have any tips for me as far as tuning. I'd like to see what kind of speed I can get out of a 50cc 2T before I go to the 70cc. This is my first 2T bike so I want to start from the beginning and enjoy the learning curve. Thanks Dawgs! I've done pretty much everything to my Triton R4, which uses the same engine as your CPI. And I've gotten it up to around 48 MPH tops. I finally ordered a 70cc kit, and I'm sure I'm going to love it ;D
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Post by bcronk09 on Sept 18, 2009 7:05:14 GMT -5
Reign,
What are the most gainful Mods you did to your bike?
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Post by Reign on Sept 18, 2009 11:13:39 GMT -5
Reign, What are the most gainful Mods you did to your bike? I'd say that now that I tightened the exhaust back up, its one of the most gainful things. If you have around $160, go with a exhaust first. Even without a 70cc kit, it makes a huge difference. Second thing would probably be the clutch springs. for around $8, they make a surprising difference. I haven't noticed a difference in roller weights, other than when I bought the scoot, the rollers were still the original 2005 rollers, with 4700 miles on them needless to say, I had to change those. Hopefully these new slider weights will give me something to brag about. I'll make sure to take lots of helpful pictures when I add the 70cc kit as well, seeing Vert doesn't have a tutorial on that.
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Post by Reign on Sept 24, 2009 12:36:43 GMT -5
So this is just an update on the parts. My polini kit is in Indiana right now, but it turned out to be a 10mm version, so Enviromoto is ordering me a 10mm > 12mm bearing. the sliders, main jet, exhaust gasket, and clutch springs haven't arrived yet. Maybe tomorrow. I'm going to start setting up a work bench in my basement today so that I can just remove the engine and take it to the basement to work on, seeing it's supposed to rain for the next week straight
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Post by 2strokd on Sept 24, 2009 18:23:25 GMT -5
Sweet and not so sweet, at least a conversion bearing is out there though. So are you doing any prep work to the cylinder or ya just gonna slide that puppy on and roll?
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Post by Reign on Sept 24, 2009 18:39:23 GMT -5
Sweet and not so sweet, at least a conversion bearing is out there though. So are you doing any prep work to the cylinder or ya just gonna slide that puppy on and roll? I'm thinking of making it nice and smooth in the exhaust port. What would you recommend I do?
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Post by 2strokd on Sept 25, 2009 8:38:28 GMT -5
Polini,s stuff comes out of the box nice and pretty much RTR (i did) but i would check all the ports for edges and do a general inspection of the cylinder and piston. You will be amazed at the difference between not only the bore, size etc, but the quality of Polini,s cylinder over the stock one. If you sit back and inspect the both of them side by side you will probably wonder how it even ran before lol. I did!
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Post by Reign on Sept 25, 2009 9:30:39 GMT -5
Polini,s stuff comes out of the box nice and pretty much RTR (i did) but i would check all the ports for edges and do a general inspection of the cylinder and piston. You will be amazed at the difference between not only the bore, size etc, but the quality of Polini,s cylinder over the stock one. If you sit back and inspect the both of them side by side you will probably wonder how it even ran before lol. I did! Sounds good. I'm not in a huge hurry or anything, so I'll probably take my time and make sure everything is as close to perfect as I can make it. I already had a 70cc kit, but it was pretty scored up, and it didn't look like it was the best quality. I haven't had my stock cylinder out yet, so I'm sure im in for a surprise on how ugly it is after 5000 miles (which I just hit 2 days ago )
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