Honda 300EX

[300kyle09]

I have a 95 300EX and I wanted to get a big bore put into it. What Would a good bore be to make it faster, but also keep the rest of my motor safe, and reliable.

[graham300ex]

.80 over=true 300 and still reliable or get 330 kit but some reliability is lost then. still good though

[300kyle09]

The 330cc bore kit is what I'm thinking about, but my case has to be bored out to fit the new larger sleeve. But I've heard good things about it.

[graham300ex]

but the kid off ebay it comes with sleeve installed in cylinder and everything you need for lik $300

http://cgi.ebay.com/ebaymotors/BIG-BORE-HONDA-TRX300EX-300EX-CYLINDER-KIT-330EX-80mm_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1205Q7c66Q3a 2Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1318Q7c301Q3a1Q7c293Q 3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZite m110333621008QQitemZ110333621008QQptZMotorsQ5fATVQ 5fPartsQ5fAccessories

[kawie]

there is a better kit on ebay that uses a JE piston an has evertything that the kit u listed for i think it was $295.search 300ex on ebay

[300kyle09]

I have seen both of those kits on ebay, but the bottom end, (Crank case) has to be machined out so the sleeve can go into it. That is what I've heard.

[graham300ex]

i don;t think you have to machine your bottom end but someone correct me if im wrong

[JohnT_98300EX]

The thing to do is to ask the vendor before buying. The Poweroll 330 kit requires case machining but the FST kit says nothing about needing it that I found.
It might depend on the thickness of the new sleeve?

[graham300ex]

ya call um up and see.

[bad ex]

yeah the cases have to be machined to fit the sleeve:devil: