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Post by jeppetheswede on Jan 3, 2019 9:51:05 GMT -5
Hi newbe here I collected a couple of old air cooled scoots . Two of them useable cpi popcorn 2003 i think and a kymco super9 2001 ish. a bunch of parts and other stuff . for those two . Now for the big ? whitch cylinder to use on the cpi . I have a airsal T6R racing the one with six head bolts.And four hex foot bolts short ones . Havent found any info on this one the second one is a stage 6 pro sport mk2. Both of them are brand new A jasil crank some kind of performance type malossi fly clutch and the same brand in the front multivar ?.
exthast systems Tecnigas next R 2 yasuni carrera c16 and a couple un known pipes.
21 mm dellorto carb naraku 360 intake and reeds a lot of them . The kymco not sorted trough the stuff yet. Thankful for useable tips.
Sorry for the spelling but i live in Sweden So english isnt my main språk
The Swedish speedfreak
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Post by jeppetheswede on Jan 3, 2019 10:05:32 GMT -5
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Post by jeppetheswede on Jan 3, 2019 10:06:31 GMT -5
Sorry new to this stuff a pic aff the airsal. But it has a single ring piston.
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Post by aeroxbud on Jan 3, 2019 13:46:34 GMT -5
I ran a stage 6 pro sport mk1 with the C16. Was a great set-up. The mk2 revs higher. The airsal would still work good. The twin ring set-up should make for a very reliable set up though.
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Post by jeppetheswede on Jan 4, 2019 4:37:54 GMT -5
I ran a stage 6 pro sport mk1 with the C16. Was a great set-up. The mk2 revs higher. The airsal would still work good. The twin ring set-up should make for a very reliable set up though. Thanks for the answer. My aisal kit has a single ring piston. I have a bunch of pistons but the only one that stays under the head recess is a sinle ring piston.
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Post by jeppetheswede on Jan 12, 2019 13:52:38 GMT -5
Loking for max performance we are a couple of old men in our best age. who has a yearly endurance scooter race on a go cart track. its 6 hours long so you cant go totally over board with the performance uppgrades. So the question is witch cylinder is the strongest one. The scoot has to last 6 hours. of total max punishment. And im the newbie never done this before so help me beat these veteran scooter performance gurus. My main goal is a scooter that have the power to go fast on a tight course. Been calculating max exthaust duration to 190 degrees or can i go higher need the tourque out of the bends. What performance difference are there with the single or split exthaust port need tourqe out of the bends. And the cvt cant hit too high up in the revs do not vant a wheelie out of the bends. Need good useable power and a top speed of 95 to 115 kmh per hour.
Thankful for all input and thogths on the subjekt of roadracing a scoot with a tiny engine Jeppetheswede ps been modifying big fourstrokes my entire life so two strokes are unknown territory for mee
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Post by 190mech on Jan 12, 2019 16:05:27 GMT -5
What is the CC limit,what mods are allowed?LC conversion would be the best choice for that long race...
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Post by jeppetheswede on Jan 12, 2019 16:39:12 GMT -5
70 cc air cooled not past 2004. Othervise not mutch. Oh turbos nitrous is not allowed. And a very ristriced budget 500 ca in dollars. So the cpi i got is a stoolen insurance scooter. The cpi is lighter than the kymco so im gooing with the cpi.
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Post by ryan_ott on Jan 12, 2019 16:41:57 GMT -5
What kind of budget do you have? That could make or break your build. CC limit is also important to know.
Edit: you type faster then me
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Post by jeppetheswede on Jan 12, 2019 16:45:39 GMT -5
70cc 500 bucks thats it. And my workshop and knowliage of engines. And of course a bit of cheating that no body knows about.
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Post by ryan_ott on Jan 12, 2019 16:53:50 GMT -5
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Post by jeppetheswede on Jan 12, 2019 17:04:48 GMT -5
Sorry no liquid cooling only old school air cooling. And its a long bit to the usa for me im living in Sweden europe. Its winter now and cold as f...k here 15 below cero in celcius. The race is happening in the end of may. Set up for now is a airsal t6r racing or a stage6 pro sport mk2, naraku 360 intake with correspnding reeds 21mm carb. Malossi multivar stage6 sport clutch stage6 vingbell and a ? Racing ignition a jasil racing crank.
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Post by 190mech on Jan 13, 2019 7:29:49 GMT -5
I'd focus on reliability,,12mm piston pin,large cooling fan,CHT gauge,stock airbox,good CVT cooling,,etc..
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Post by jeppetheswede on Jan 13, 2019 11:46:37 GMT -5
I'd focus on reliability,,12mm piston pin,large cooling fan,CHT gauge,stock airbox,good CVT cooling,,etc.. Ok will cover those points cart air box drilling the primary cover and scoop building have been locking around and picked up some hints and tricks here and there. But what cylinder should i use. Carb intake and so on The stuff i mentioned above came with the scoot. And are the stuff crap or useable for my spring endurance race.
Have even been reading about porting so i am thinking about a bit more exthaust timing a 190 degree opening point. But idont know if the bridged exthaust on the T6R is better than the pro sport mk2. And cooling dimpels in the piston for the T6R and on and on
And this small engine stuff is greek to me have been building car and truck engines.
And thanks for the input Jeppetheswede
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Post by ryan_ott on Jan 13, 2019 12:55:07 GMT -5
For power the bridged exhaust port cylinder would probably be the choice, but they aren’t forgiving for incorrect tuning. The MK2 sport would be more reliable and easier to tune so it’s a toss up. You’ll still need a pipe I’d guess you’ll be around 11K or so. C16 or the bottom end of a C20/21 so either could be good choices. I’d look and see what you can find second hand in your area.
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