OzVMX Forum

Marque Remarks => Yamaha => Topic started by: lms6201 on March 20, 2009, 08:42:02 am

Title: ebay it 490 and yz 490 questions?
Post by: lms6201 on March 20, 2009, 08:42:02 am

the yz 490  , isn,t 57h a later engine # than 84 ,like mabey 87, the seller is describing it as pre 85 ,looks like an 84/85 frame but ,   the it 490 ,the seller is using bored to 510 cc as a pitch , would that  be 89mm bore , the last available size from wiesco? 

Title: Re: ebay it 490 and yz 490 questions?
Post by: LWC82PE on March 20, 2009, 08:50:49 am

yes 510ccc is maximum Wiseco oversize for 490 which is +2mm over the standard bore size what ever that is, i cant remember.

Title: Re: ebay it 490 and yz 490 questions?
Post by: BJJ on March 20, 2009, 05:27:03 pm

Yep, 2  x 84 models,  according to very un approved online records on someones site.

Email yamaha,  that is the best way,  and follow through with them, pls get back to us here?

84 pitfalls
-4 speed
-Squish persona ( i never could qual this)

otherwise its a fantastic steed!!