Hi guys.. I took some pic of my ns12ts1 zac crank, sleeve and piston. Need someone to identify what mod have it been done? Bec I think it just have no different between the normal want.
Thanks!

That engines from the pictures has zero modifications done to it. I can see that the conrod is not the same and it COULD have been machined to eliminate like .01% of its weight which will amount to less than .00001 sec faster laptimes. In my own honest opinion if you were charged for a modified engine, you have been ripped off. Either the person that modified it only did port timing changes which would also have been noticed in the picture, or he just ripped you off.

ya man! I also have no idea if the port timing got change anot! Anyway below are the box that came with the engine... have a look!

Dont see anywhere saying its modified... Maybe its a "special" ZAC edition, just dont see where it is special. Hope you did not pay that much for this engine

this isn't the modified ns12ts1..the engine u have is a stock engine..its only made by kawahara...if u have have the modified ns12ts1 it would come together with a certificate and it has the word modified on the box like mine..

since it is a stock engine... then why still need to make by kawahara?

Your engine is a stock engine.

Since Novarossi engines distributed by Kawahara in Japan, they just put their sticker on and recognizable.

Hey Jameslow,

This is ZAC Tuned !!! http://www.kawahara-racing.co.jp/nova.tuneengines.html with your one is ZAC Stock.

how much did ur engine cost..

how much did yr modded ns12 costs?
where to buy?

i got it frm a fren...the condition was great juz after run in and i got it for $130 oni as he was more to offroad and giving up onroad

well...since i have bought this engine, i will just use it....ha!