Hi guys.
I have "original" Mito Engine with Jolly Moto Strada.
Changes: Squish 0,95mm, little more compression (machined 200H) and 1 ring piston.
I have main jet size 330. But i think power isnt very well.
Last year i tryed with 310, and at 11000 i didnt have power. With 330 its better. But at 3rd gear, i dont have much power.
What Main Jet sizes do you have with jolly moto?
I have some kit exhaust, i think its for 75666, i read that i can also use it well on 73037. Is it right?
What main jet sizes do you use with Kit exhaust?
many thanks, Philipp
0
Main Jet Size's With Different Exhausts
Iniziato da Phil_W, Mar 22 2009 15:42
7 risposte a questa discussione
#1
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Inviato 22 March 2009 - 15:42
#2
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Allotrio deuteragonista pitecantropo
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Inviato 22 March 2009 - 15:44
hey, it's not just a matter of "main jet", you also may have to set the others value of the carburetor.
anyway you should at least say which kind of carburetor you are adopting, and also which kind of air box
anyway you should at least say which kind of carburetor you are adopting, and also which kind of air box
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#3
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Inviato 22 March 2009 - 15:53
Hi,
Carburator is Mikuni Tm 35 (i think its clear with sizes of main jets)
Airbox is original Evo 1, i dont see matters to work it or change it.
I know thats not only a matter of the main jet is. But i think other rpm-ranges are okay. Only problem at 10000+.
Carburator is Mikuni Tm 35 (i think its clear with sizes of main jets)
Airbox is original Evo 1, i dont see matters to work it or change it.
I know thats not only a matter of the main jet is. But i think other rpm-ranges are okay. Only problem at 10000+.
#4
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Ing.
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Inviato 23 March 2009 - 12:57
In general, the 310 mainjet is enough.
You use original Mikuni mainjet?
What is your Mito engine ignition advance?
You use original Mikuni mainjet?
What is your Mito engine ignition advance?
NO PM per consulenze tecniche, grazie! La critica è l'imposta che l'invidia percepisce sul merito (Cit.Duca de Levis) Chi sa fa e chi non sa insegna (proverbio)
We never did such tests. And we never had sophisticated instruments. 'Try and see' was always used. And no simulations! (CIT. Jan Thiel)
We never did such tests. And we never had sophisticated instruments. 'Try and see' was always used. And no simulations! (CIT. Jan Thiel)
#5
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Master of Mitos
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Inviato 23 March 2009 - 16:14
300-310 is good even for prepared motors
it could be a problem of needle and not only of main jet.
it could be a problem of needle and not only of main jet.
#6
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Mito Pilota
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Inviato 23 March 2009 - 17:30
you said that you get on a jolly strada....it's a little bit powerless this kind of exhaust.....maybe it will be better with a jolly sp.....in my opinion(as someone else said before)the 310 main jet of your mikuni is enough.....at an elevated number of rpm it's normal I suppose that your jolly strada stop your torque.....you need a better exhaust,even if you modified your squish and even if you have a 200h with a one ring piston....
#7
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Inviato 23 March 2009 - 21:42
Well to know. Thats exactly same i think.
But with Main Jet 330 i have little bit more Power till ca. 12000rpm.
With 310 only to 11000rpm.
But at this rpm range, there is no "resonance". It's like a wall.
I'll try SP exhaust, if it wouldnt be better i search Jolly SP.
Thanks for help
But with Main Jet 330 i have little bit more Power till ca. 12000rpm.
With 310 only to 11000rpm.
But at this rpm range, there is no "resonance". It's like a wall.
I'll try SP exhaust, if it wouldnt be better i search Jolly SP.
Thanks for help
#8
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Mito Pilota
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Inviato 24 March 2009 - 15:42
don't mind....forums exist for free consulences.......so try the jolly sp exhaust but pay attention to the carburation...
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