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General => Technical | How To => Topic started by: dizzum28 on September 23, 2012, 04:42:54 PM

Title: Need some help @ Big Bore kit
Post by: dizzum28 on September 23, 2012, 04:42:54 PM

Okay, So I have some time & cash to roll out and tinker with my 2T Yup 50 again..... Does anyone know what big bore kit is a direct bolt-on? I'm pretty sure it's an SF10 motor? Please correct me if i'm wrong? I see tons of 139qmb kits, but nothing for an SF10. Is the SF10 basically the same as the 139? I've read that these are decent engines? again, correct me if mistaken? I understand that most of you are not familiar with this model as there's not even a section for it on this forum. It's basically the same model as the "Sting", which is the UK version.  Thanks

Title: Re: Need some help @ Big Bore kit
Post by: dizzum28 on September 24, 2012, 08:41:22 PM

Since nobody responded..... Does anyone know what other Kymco model(s) have the same motor? (If any?) That way I can just cross-reference a more popular model. Also, I did end up finding a 70cc kit, But it's located in the UK. And I'm still not positive this model is an SF10. Anyone?

Title: Re: Need some help @ Big Bore kit
Post by: Vivo on September 25, 2012, 07:29:33 AM

I think, except for the ZX, the Super 9, People and Cobra have the SF10 engine...

Title: Re: Need some help @ Big Bore kit
Post by: dizzum28 on September 25, 2012, 07:49:51 PM

Appreciate the help Vivo.

Title: Re: Need some help @ Big Bore kit
Post by: Peters on October 16, 2012, 03:10:25 AM

Sorry for the delay. The 139qmb is a 4t engine. Yours is a 2t. So, yeah completely different.

The ZX and People are definitely different engines. Pretty sure the ZX is the only Kymco scooter that Kymco used that engine on. They did sell it to Honda and a few other manufacturers though.

Start by cross referencing part #s for other kymco 2t engines at stadium yamaha. http://www.stadiumyamaha.com/ (http://www.stadiumyamaha.com/)

Just checked around, Planet racing has kits for the Yup
http://www.racingplanetusa.com/index.php?shop_ID=1&sessID=ef51344e78587a3998d737465334c443&olevel0=2&olevel1=12&olevel2=&level0=2&level1=12&level2=44 (http://www.racingplanetusa.com/index.php?shop_ID=1&sessID=ef51344e78587a3998d737465334c443&olevel0=2&olevel1=12&olevel2=&level0=2&level1=12&level2=44)

The kit for the Yup has the same part # as the kit for the people. So I assume the engine is the same. If not the kits are the same anyway. This should help you shop around.

Hope this helps... Good luck  :)