Turning a Yamaha Fino into a Racer


Before we start, we need to be clear that the Yamaha Fino will never be one of the top choice for speed geeks. We found after our installment of the engine modification that the Yamaha Fino becomes hard to drive at higher speeds. Some moments the Yamaha Fino was outright dangerous to handle. After we examined the cylinder of the Yamaha Fino we came-up with the idea to do a bore-up to 63mm, the stock bore of the Yamaha Fino is 55mm. Changing the bore from 55mm to 63mm will change the Yamaha Fino from a 114cc to a 189cc motorcycle.

After contacting some of our sources for accessories we found a manufacturer who produces a complete set, which includes a 63mm Ceramic Laminated cylinder, a high performance 4-valve cylinder head (the Fino comes standard with only 2-valve head), 63mm Piston, high performance racing camshaft and the materials to make this all fit and assemble.
This tuning set is originally for a Yamaha Nouvo, but as the Yamaha Fino shares the same engine we expect not much problems mounting this onto our little Fino. For the carburetor we replaced the Mikuni BS25/1 with a Mikuni BS32 which we had on stock, this carburetor originally was from a Yamaha XJ400 bike. Normally the 32mm Mikuni would be a bit to big for the 189cc but we decided to go for a smaller jet needle and restrain the air intake a bit.

After we had the Yamaha Fino rebuild, and fitted with all the superbike engine parts we started the little lady. The first thing we found was that the exhaust as not big enough to give it a go, the exhaust was easily replaced with a more aggressive model and now the little lady did not sounded so little

Doing some test driving, we found that the wheels of the Yamaha Fino are not balanced to go that fast. After we did some professional tire and wheel balancing. We still had difficulty driving this scooter at higher speeds. Knowing that the engine could easily bring this scooter to speeds around 180km/h we had problems of reaching speeds of 120km/h as where it was almost impossible to handle the bike safely.

Tag: Yamaha Fino 115cc Scooter Big-Bore 189cc Modify Ceramic Speed
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Anonymous

Thursday, 04 October 2007 @ 02:38 PM ICT
Can the rear single-shock Fino monocross swingarm take so much beating? Going from 115cc to 190cc is a big step for this small scooter, which is also about 40 kilo lighter then his bigger Yamaha Nouvo brother. I hope nobody kills himself with your modifying idea’s

Anonymous

Monday, 20 October 2014 @ 12:01 PM ICT
where is the best motor shop here in bangkok? i want to buy a 59mm bore ang bigvalve for yamaha mio.. i hope there is a MTRT or JVT brand here in bangkok

Anonymous

Tuesday, 16 October 2007 @ 01:46 AM ICT
I modified my new mio with a 69 mm piston and a connecting pin adding 6mm plus to the stroke. Use max wheels. I have also toyota vios valves and a racing cam. i can say for sure that you need to get a better brake pad or brmbo original brakes(never the cheap copy shit). this bike can go over 180k per hour. yet to be beaten by any thai kids on their mio drag bikes. the total cc is 238cc from the stock 113.i also use motul synthetic oil as this is a must and i drive more than 40 kilo everyday.

Anonymous

Wednesday, 30 January 2008 @ 12:06 AM ICT
but this not enough... need to know many things.. the winners in the last race put an electronic modify CPU.. so now without electronics also with this kind of motorbike u cant win any race!!!!

Anonymous

Thursday, 31 January 2008 @ 01:26 PM ICT
With electronics this bike will not even start as many things are electronic controlled

Anonymous

Wednesday, 06 August 2008 @ 09:59 PM ICT
could you email me the complete set up? how much did you spend? heres my email address: gwafooh@yahoo.com

thanks

Anonymous

Monday, 02 March 2009 @ 10:28 PM ICT
hi,
in the opening section to this topic it reads:-

"After contacting some of our sources for accessories we found a manufacturer who produces a complete set, which includes a 63mm Ceramic Laminated cylinder, a high performance 4-valve cylinder head (the Fino comes standard with only 2-valve head), 63mm Piston, high performance racing camshaft and the materials to make this all fit and assemble." - result 189cc

You then followed on to say you modified yours to 69mm an changed some other additional parts.

where can i get a kit with that offers 63mm + and also a good source to obtain the other parts you changed, i.e. cams, plugs etc.?

Someone else responded to this blog saying they could supply a kit offering 160cc.... thats not enough for me, i need 189cc + !

Sorry for all the questions; im fairly new to Bangkok, this is my first bike since i have been hear .....please be kind and point me in the right direction.

deeodoublegee@gmail.com

Anonymous

Tuesday, 15 January 2008 @ 10:46 PM ICT
Greetings,

Who makes this kit and where can I get one?

Thanks.

Anonymous

Thursday, 27 March 2008 @ 03:40 AM ICT
Another call for more information please! :-)

I'm sure there are a lot more people interested in this sort of thing. English info is pretty hard to find on tuning bits for the popular bikes. Could you share anything more about the kit manufacturer? Availability, or pricing?

Thanks a ton!

Anonymous

Tuesday, 30 December 2008 @ 01:17 PM ICT
Hello,

i have hi-performance racingkits for sale for Yamaha Nouvo,Nouvo MX,Mio,Mio Fino
complete racing kit 160cc. easy install just bolt on.Premium quality.

I stay in Bangkok Thailand.

If you are interested mail for price to euro_leonardo at hotmail dot com

Brett

Monday, 01 December 2008 @ 04:21 AM ICT
hello

I currently have a yamaha nouvo mx 115cc model and are looking to tune it up, i was considering a big bore kit, does anyone know where these are available from in thailand and also what other modifications are advisable, i did put a diferent exhaust on it but found it was louder and slower

Anonymous

Tuesday, 30 December 2008 @ 01:14 PM ICT
Hello,
Reply to the person who asked for a racing kit for his Yamaha Nouvo MX.

i have hi-performance racingkits for sale for Yamaha Nouvo,Nouvo MX,Mio,Mio Fino
complete racing kit 160cc. easy install just bolt on.Premium quality.

I stay in Bangkok Thailand.

If you are interested mail for price to euro_leonardo@hotmail.com

leobkk

Tuesday, 30 December 2008 @ 01:42 PM ICT
Hello,
Reply to the person who asked for a racing kit for his Yamaha Nouvo MX.
or anyone who's interested for a racing kit.

i have brand new hi-performance racing kits for sale for Yamaha Nouvo,Nouvo MX,Mio,Mio Fino
complete racing kit 160cc. easy install just bolt on.Premium quality.

I stay in Bangkok Thailand.

If you are interested mail for price to: euro_leonardo@hotmail.com

Anonymous User

Tuesday, 28 June 2011 @ 12:25 AM ICT
Hye guys,

arie here from malaysia,,from the date of this post looks like its been few years back,,but can you guys inform me the brand for that 4 valve head and also that 65mm coated cylinder block??

lastly,,any idea where can i get this head and block?any web selling it online???

hope you guys can help..

Anonymous User

Tuesday, 28 June 2011 @ 12:28 AM ICT
hye guys,,

arie here,,i mean the 69mm coated block and 4valve cylinder head,

you can email me here : azahari87@gmail.com

Anonymous User

Saturday, 07 December 2013 @ 04:13 AM ICT
im just asking what is the total cc if i install 59mm steel bore on yamaha fino?? thanks
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