OzVMX Forum

Marque Remarks => Yamaha => Topic started by: LWC82PE on August 24, 2009, 09:09:37 pm

Title: whats this head off
Post by: LWC82PE on August 24, 2009, 09:09:37 pm

Big bore Yamaha head marked 5X600

(http://4j2tea.blu.livefilestore.com/y1pfa7gUZE5IOgBae5FFvtP5K-ZVNtC_XM5xic_hQ4b5kI2ZUDn9elBY6o8ZWCCfN_8bN75hQJanCQM50B8iAdWlw/Yamaha%20Big%20Bore%20Cyl%20Head%201%20of%203.JPG)

Title: Re: whats this head off
Post by: holeshot buddy on August 24, 2009, 09:26:36 pm

peewee 50

no its a yz490j 1982

cheers rusty

Title: Re: whats this head off
Post by: frostype400 on August 24, 2009, 09:27:20 pm

got the donk to go with it Leith?

Title: Re: whats this head off
Post by: LWC82PE on August 24, 2009, 09:29:25 pm

No Frosty.

Title: Re: whats this head off
Post by: paul on August 24, 2009, 09:32:04 pm

5x6 may bee yz 490 k

Title: Re: whats this head off
Post by: Viper666 on August 25, 2009, 09:40:38 am

Definitely 1982 YZ490J but will fit a YZ490K as well as IT490K & L. With the last three though the combustion chamber and squish design will be slightly different but I would not think enough to make any big difference in performance or reliabilty either way.

Viper666

Title: Re: whats this head off
Post by: LWC82PE on August 25, 2009, 07:42:04 pm

thanks guys for your help

Title: Re: whats this head off
Post by: caps 999 on August 25, 2009, 08:46:02 pm

definitly 490 j

all 82 models use the 5x prefix
eg 250j 5x5
125j 5x4
80j 5x2
etc

Title: Re: whats this head off
Post by: holeshot buddy on August 25, 2009, 10:21:33 pm

must be a 490 j then ;D ;D ;D