Cagiva Mito Oil Spits

[Litwos7]

Welcome. I have a problem with my mito because, in August, she got a new engine top and connecting rod, the squish is set correctly, the ignition is also good, the shaft seals are also good. The kit includes a mikuni tm 35 carburetor (which was used with this cylinder) italkit v force diaphragm valve and a turbokit carrera gp exhaust. The carburetor is factory set, I tried to adjust the mixture screw to zero effect, I reduced the main jet from 310 generations to 270 zero effect, it still spits oil on the back of the motorcycle and, worst of all, the tire and brake. Due to such a low degree of mixture I have rubbed the motorcycle ... I make the oil mixture myself 1:50 oils which were Motul 800 710 ipone samourai and castrol power 1 on each the same, pb95 fuel. I don't have enough strength anymore, does anyone know what the problem may be? Best regards and have a nice evening: D

[oilyrag]

Love it. Do you have any videos of riding it? Can you rotate the exhaust to point further away from the bike? Or use a different exhaust? Maybe it's too short.

[Litwos7]

Well i got videos with riding without any changes from july and the soundcheck on turbokit, I can't rotate this exhaust... For me its not even for this motorcycle... Because if I mount on bottom mounting secondary near passager foot peg in not fiting and vice versa. Now I searhing for help and new cylinder barrel... The piston ended really bad ( It has a hole So). Tommorow I post some videos
With the exhaust i writed to turbokit 3 times no response... on original exhaust there is no problem still spits oil but only license plate, On the march I will try to re-weld and rotate the exaust mor "outside" if there will be not response from turbokit.

[oilyrag]

I don't know much about 2 strokes so I can't really help with the technical part. Hopefully there's a 2 stroke guru on here. I'll be interested in your project. Good luck with it

[Litwos7]

Hey Everyone I send you some video with Mito Have a beatiful Day
https://drive.google.com/drive/folders/1CpgkwOhdNdf_UkRGtobjGZwSNEerq74q?usp=sharing
^
Those films are with 350 min jet in carb XD

https://www.youtube.com/channel/UCsA8Okfme05Hfc_JFjIujkA
^
Those with dellorto 28 and stock exhaust

[P.]

[Litwos7]

If I choose the original end cam I need to change all rear of the exhaust from the diffuser beacuse turbokit exhaust don't have any posibility to mount end can, wool in turbokit was also replaced but I got a question because in my book muffler is showed in different way than I done to my exhaust, I done it that way because it jus fitted into stinger with just some help. Is it good or not ? Pictures in attachment

[Easy-X]

I'd have to say you generally want to direct a 2-stroke exhaust output as far away from the back wheel as possible - high up and far back. Is this an all round thing or just on choke?

Step 1 I would say is get the jetting right for performance. On an old dirt bike I'd just play about with as I went along but this thing really would benefit from a dyno tune.

Step 2 is look at the exhaust design/placement but obviously that feeds back into Step 1, doh! Getting hold of a stock exhaust setup for reference would definitely be worth considering.
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[MarJay]

I...

*breathe*

I...

*Be polite Mark, be polite*

You are aware that two strokes rely on the shape of their exhaust to scavenge gases and to keep fuel inside the cylinder, right? The exact shape and volume of the exhaust is absolutely critical to the functioning of the engine? You also are aware that turboing a two stroke is fairly pointless because of the way the ports open and close, all you're doing is pressurising the crankcase rather than providing any extra compressed air into the cylinder. The movement of the piston is what opens the inlet and exhaust ports, and if you turbo the engine, all that will happen is the excess pressure will escape via the exhaust and transfer ports, pumping fresh charge out. You'll also probably blow the crank seals because of extra pressurised air going through the transfers.

You clearly have some technical ability, but absolutely no knowledge of two strokes. Two strokes spit out oil. That's why their exhausts tend to push gases and liquids away from the rear wheel. Modern 'GP' style exhausts are spectacularly inappropriate for engine performance and safety reasons. It probably is possible to build a turbo two stroke, but it won't be bolt on and probably not a single cylinder. The engine would need to be designed from scratch with the turbocharger in mind.
____________________
British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[A100man]

[A100man]

[MarJay]

It's a dumb name for an exhaust, and it looks like a very poor design.
____________________
British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[Easy-X]

Just to kick off a great Internet argument you can and should turbo a 2-stroke...

...if it's a snowmobile you're using at altitude to compensate for the lower air pressure
____________________
Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Robby]

Two strokes spit oil. Either fit a different exhaust, or get used to cleaning it.

[Litwos7]

[c_dug]

I agree with others, I've owned a few 2 strokes and they have all spat oil out of the exhaust - it's part of the charm.

I'll admit, your exhaust looks kind of cool, but it is also clearly designed for form over function. The exhaust won't look half as cool when you come off of the bike due to oil all over your back tyre!
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I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[A100man]

[Riejufixing]

[Riejufixing]

[GSTEEL32]

Given how critical exhaust design is on these types of 2 strokes, I'd be massively in favor of returning to stock, or an established JM or Arrow complete unit.

I'm not an expert in 2 strokes, but I think there is a reason that the later 125 versions, all had silencers well clear of the rear drum/disk etc.

My own 2 strokes (125's and 250's) tend to foul the bottom corner of the license plate, rather than anything else on the bike...

[Robby]

Of course, there is the possibility to reduce the amount of oil getting spat out, by having the oiling an fuelling set up properly.

In one of the posts you mentioned the mixture screw. This is red flag, the mixture screw is only for adjusting the air/fuel ratio at tickover. Everything under power is set up by correctly adjusting the jet sizes, needle height, and (to a degree) float height.

My preference would also be to use the autolube system rather than pre-mix, unless the autolube has a particular reputation for failure on this model.

It sounds like the engine is extensively modified, which means the fuelling needs to be set up properly. The only way to get this right is to get the engine on a dyno and air/fuel ratio monitoring and fiddle about with the carb settings until its right.

[Litwos7]

[RhynoCZ]

Buy this type of silencer and your troubles will go away.

NOT A SPAM: https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=cagiva+mito+exhaust+arrow&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=cagiva+mito+exhaust

https://www.motops.cz/photos/original/248155-arrow-kevlar-approved-silencer-arrow-kit-cagiva-mito-125-1994-2006.jpg

EDIT: Also, what Robby says. Two strokes spit oil. There's also a lot of turbulent air behind you, so some of the oil also ends up on your back/jacket.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Riejufixing]

[Litwos7]