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Post by baywatch7737 on May 29, 2020 11:45:01 GMT -5
Hey guys, posted a couple times in the performance section and was recommended to start a build thread. Finally gonna tinker this evening so I’ll get some pics and put em up.
I ordered a Malossi cdi and a jet set, gonna drain the old gas and clean the carb tonight and try to see what I’m working with. Right now it runs and starts fine but sometimes bogs down while I’m moving. Hopefully the carb clean and new gas fixes that issue. I’ll let you know later.
I posted this question already but I’m gonna do it again here in my build thread in case someone might know. In most of my research it seems like CPI scooters mostly have the jog engine with the 12 mm wrist pin/ larger crank shaft. But I saw somewhere that before 2004 cpi has the jog with the 10mm wrist pin? Anyone know? Any help greatly appreciated. Wanna make sure I get the right variator/bbk and exhaust. I found a thread on a different forum that gave a way to identify which engine you have by checking the splines and variator diameter. Post more later thanks guys.
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Post by geoffh on May 29, 2020 15:33:24 GMT -5
Baywatch,nice to see you here but there,s no short cuts 10mm or 12mm who knows until you crack it open.
Geoff
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Post by 90GTVert on May 29, 2020 19:55:40 GMT -5
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Post by baywatch7737 on May 30, 2020 7:49:53 GMT -5
Ok, appreciate the help. I’ll figure it out when I figure it out. Being pre 2004 and Taiwanese I’m betting it’s 10mm size. I’ll be sure to let you know when I figure it out and hopefully save someone else the trouble.
I’m doing a pretty mild build all things considered. Sticking with a Malossi sport bbk eventually. I know someone on here is gonna tell me I should do the cylinder first then everything else around that to avoid multiple tuning sessions. But my cheap side won’t let me take out that stock cylinder until I use it some. So here’s the latest query.
Exhaust???
I have some experience with the technigas next r, it’s what I had on my tgb build a couple years ago. Good pipe, fairly easy to tune and relatively inexpensive. It’s my impression from what I’ve read here and other places that it’s really a pretty mild pipe, possibly not the ideal pipe for a 70cc sport kit. I think my main reason for considering it is that it will work well with the stock cylinder and fairly well with the sport kit as well? What are your impressions and thoughts on the next r as a pipe?
I have seen people here mention the yasuni r pipe though, I believe it was referred to as an all around pipe for both sport and high rev kits. Can anyone chime in on there experience with the yasuni? It’s a bit more expensive than the technigas but I’m willing to pay for the quality. Is it just as easy to tune as the technigas? Will it work well with my stick cylinder for the next six months? I’m open to any other pipe suggestions as well. Thanks guys
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Post by pinkscoot on May 30, 2020 8:35:01 GMT -5
TGB Next R is an okay pipe and just about the only thing available for Morini engines. The Minarelli opens you up to a whole world of pipes.
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Post by baywatch7737 on May 30, 2020 9:20:57 GMT -5
Right!! That’s what I noticed. I’m pretty psyched to be doing a couple minarelli builds the tgb just didnt have the parts to really play with.
The first Mina build I had done years ago was on a eurostrata rx8, awesome scooter unfortunately my “mechanic” was as crooked as they come. I bought a stage6 pro replica and stage 6 sport pro race cylinder for it and when he installed it he did not take the time to tune it like at all. I remember picking it up and it being slower than stock. He whined about the narrow power band and the fact that the cylinder was to hard to dial in. Rather than working on it he told me I needed a variator and 19mm Dellorto carb, so what did I do? I bought both and took everything to him. Paid him to install everything, then when I picked it up this time it would bog down when I started moving and then shoot off once I hit 15 mph lol going like 60-70 mph According to the speedo. Yea it lasted like that for three days and I had complete tip end failure and blew a hole through the top of my piston. Again he cited crappy parts so again I paid him to “fix it”. Sorry about the rant now that I’m getting back into this stuff it really makes me mad thinking back. I decided then to just do everything myself.
What pipes do you guys like? Or have experience with? I’m open to suggestions? For that matter what cylinder pipe setups?
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Post by aeroxbud on May 30, 2020 10:25:37 GMT -5
Yasuni make great pipes. I have the R with a Polini sport at the moment. It works well. I ran the R with the standard cylinder for about 6 months. And once set up it ran great. For a comparison, Prior to that I had the next R. The Yasuni was 5mph faster! The Yasuni Z works great with stock engines. And still works well with sports kits. The reason I went with the Yasuni R was I could not make up my mind if I wanted a 70cc sport. Or a 50cc mid race build.
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Post by baywatch7737 on Jun 1, 2020 7:42:32 GMT -5
Ok cool, so the r will work with stock and the 70 sport kits?
Ran into some problems wrenching yesterday. My son and I ordered him some jets, a roller tuning kit and a technigas next r for his bike. A 2011 genuine rough house. We ordered all of it from Scooterpartsco and this site has sections where you select your scoot and it shows you available parts. Well guess what, we finished cleaning our carbs put a bigger jet in his rough house, put everything back together and went to fit his tecnigas on. It does not line up!! Come to find out even though the genuine is a fairly standard Mina engine the tecnigas for a plane old horizontal Mina will not work. So anyone working with a rough house try to make sure you get a specific pipe for that model.
Well the guy at Scooterpartsco is telling me to take the parts to a qualified mechanic lol. I explained I’m not new to this and included pics of what was going on. I dunno we’ll see how that shakes out, I’ll keep the forum posted, these sites need to stand behind there products and know what fits what. Worst comes to worst it might fit my cpi and we will have to find a new different pipe for my sons. I noticed an older post where someone recommended “prima” brand pipes for a rough house? Anyone have positives or negatives for them?
That’s the issue with his, the issue with my cpi is even after cleaning the carb thoroughly it still runs a little funny. You have to twist the throttle about 80% before it starts revving at all, lol it’s more like an on off switch at this point. The throttle cable and carb may need replacing I’ll see what you guys say before I pull that trigger though. I know a standard jog carb is fairly cheap. Once I figure out how to post pics I will, talk to you guys soon
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Post by aeroxbud on Jun 1, 2020 8:37:52 GMT -5
How to post images here 49ccscoot.proboards.com/post/7984Have you checked the free play on the throttle cable? There should only be about 2 to 3mm. There is a fine adjuster by the throttle. And normally a bigger adjustment on the carb side.
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Post by Zino on Jun 1, 2020 19:07:56 GMT -5
With your next r is too close to the tire or is the brackets not mount up right. Dexameth had put a Next r on his eton and fabbed a bracket and he put his next r on his friends genuine buddy. Some pipes are built to have brackets that slide back and forth and holes that are slotted . I have both the next R and the Yasuni r the Yasuni was easier to mount because i had more play in adjusting. The malossi wild lion adjust easy enough also . When I used to be able to get ahold of the Leo vince zx I had to Fab the bracket so it would fit the zuma right dexameths fabbed bracket halfway down the page in this thread 49ccscoot.proboards.com/thread/25884/new-eton-matrix-sleeper-build?page=7
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Post by baywatch7737 on Jun 1, 2020 20:08:15 GMT -5
Oh ok cool, I was hoping we might be able to fabricate something. Glad to hear someone has done it already, that helps with knowing I can do it.
The front bracket on the exhaust hits the cooling shroud, it’s actually a little short to line up with the bottom bracket as well. I’ll post the pics
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Post by baywatch7737 on Jun 1, 2020 20:12:41 GMT -5
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Post by baywatch7737 on Jun 1, 2020 20:16:14 GMT -5
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Post by Zino on Jun 1, 2020 22:28:25 GMT -5
Nice looking scoots . That bracket does sit pretty far forward . Know any welders . I am spoiled I have buddy's that own a metal fab shop and another that is a machinist couple 12 packs of beer go real far in getting work done .
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Post by baywatch7737 on Jun 2, 2020 12:44:30 GMT -5
Zino I got a guy who’s pretty handy who I work with, I had him make me a blank off plate for my oil pump on my tgb. He’s got some 1/4” steel he thinks can work. Aeroxbud that’s a good call, tomorrow when I get the chance I’ll see what I can do there. I was looking at carbs and cables and it looks like I could get both on eBay for 60$ or less OR that 60 could go towards my new Malossi variator lol. Last night after the guy from Scooterpartsco insisted that he sent me the right pipe, which he did by the way that was my bad assuming it was wrong. I’m sitting there looking at the pipe looking at the bracket and I was able to fit the pipe with only one of the two mounting holes on the bracket secured to the scoot and bolt the pipe onto the bracket. We put a 95 main jet In it when we had it apart, when I tried to start it though it wouldn’t fire up. Maybe to rich? I dunno I’ll fiddle with it more tomorrow. I noticed on the genuine though that it has some sort of recirculating hose that went from the stock exhaust back to the cooling shroud? Again I’ll post more pics tomorrow but anybody know about that? If it’s necessary or if I can just “delete” it? Everything’s been super helpful guys thanks again
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