Confused with Honda 50 names Camino and.....

[fv43576]

I have a Novio 1978, the 49cc piston has worn badly loss of power after 24,567 miles. I want to swap a big 70cc piston, the company who sell is India man from Birmingham I am not sure if he really know what he is talking about. He said to me that the Honda Camino, Hobbit and PA50 are different cylinder head and piston also different exhaust inlet as my Novio?

I am confused I thought all Honda 50 engine are exactly same am I right?

[GettinBetter]

You're absolutely right, they're all the same.

For 49cc engines, the manufacturers have adopted the one size fits all philosophy. get any size piston you like and it'll fit.

I'm sure someone wiser than me will be along to give you all the part numbers.

[fv43576]

GettinBetter: Thanks very much for your reply!

[martin734]

There are two part numbers for the PF50 Novio piston. The standard one is part no. 13101-081-000 and there is a 0.5mm oversize piston with the part no. 13103-081-505. Hope this helps.
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Current bike: ST1100 "Big Red"

[fv43576]

[GettinBetter]

[martin734]

The 70cc engines usually had a 47mm bore with a 41.4mm stroke, the 50cc engine had a 39mm bore with a 41.4mm stroke. It may be possible to fit the barrel from a 70cc onto the 50cc crank case.
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Current bike: ST1100 "Big Red"

[Easy-X]

[fv43576]

[GettinBetter]

[quote="fv43576"]

[martin734]

It would probably be quicker and easier to just change the entire engine.
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Current bike: ST1100 "Big Red"

[Easy-X]

[fv43576]

I have owned this Honda for 12 years used in spring to autumn. It was my dad scooter I could not see him throw it away so I bought from him. I weight 15 stones the bike only barley reach 21mph on flat but up the hill down to 12mph! now the bike unable to reach 21mph easily. I have found the piston ring lose compression means lose power! the mile is 24,000 miles. What I want to achieve? I want to reach 30-35mph is good enough, my aim is fit performance exhaust, carb upgrade large port what I saw online and change to 70cc from 49cc. I am expect to get 6bhp roughly what the specialist suggest. I don't think I can have CDI box the bike is too old.

[fv43576]

[GettinBetter]

When I read your first post, I thought you were a troll, and spamming for amusement or whatever. My reply was flippant, and I now apologise. After your second post, you cast doubt over my initial judgment (& who the fuck are you to judge I hear you all ask, well get over it, you all do it), as the post had a smidgen of sincerity. I have moderated my posts to reflect your sincerity with the project, but that doesn't mean I won't take the proverbial in the future...when/if the opportunity arises.

[fv43576]

My is compression of 88psi, on specific of scooter 2 stroke of 50cc no less than 99psi it definitely worn.

[Easy-X]

The definition of "moped" in the UK is just 50cc, limited power and speed, dunno about other countries, no one cares about pedals any more. However, fitting a non-pedal engine would mean adding foot pegs... among other things.

Anyhoo, a noble task to keep it going for the memories If you feel the bottom end is up to the task then crack on. You might not need to go as far as a new carb for a bump to 70cc, a larger jet may be sufficient.

If I may suggest that any airbox and exhaust changes are at least in keeping with the period
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter