Watercooled YZ490 engined YZ450f

[bishboy]

Although not "fully water cooled" an impressive bike all the same.  I used to have the same colour scheme on my R1 racebike 

http://www.thumpertalk.com/topic/861778-the-450-killer-the-2011-yz490/

[Simo63]

Wow, now that is how you do a conversion .. awesome workmanship and an equally awesome result 

[Ted]

I wonder if you could successfully argue that because the motor may have derived from a model that originally had a drum brake that it would be legal for the EVO class

[Nathan S]

Wonder if it still pings?

[80-85 husky]

love to hear it run..pinging was on my mind as well LOL

[vandy010]

I wonder if you could successfully argue that because the motor may have derived from a model that originally had a drum brake that it would be legal for the EVO class

linkage rear end Ted

[LWC82PE]

Here is a Smythco water cooled head for a YZ490





Currently on Formula 500 YZ powered car

If you fitted IT or WR? or some electrics to get you 12volts you could use a small pump like this too

http://www.daviescraig.com.au/Electric_Water_Pumps-ELECTRIC_BOOSTER_PUMP_12V_KIT___PART_No__9001-details.aspx

[Ted]

I wonder if you could successfully argue that because the motor may have derived from a model that originally had a drum brake that it would be legal for the EVO class

linkage rear end Ted

Yeah I know Mick. Just thought it was only as silly a suggestion as some others.

Missed your smiling face at the Nats

[kim80y]

I had a few of those Smithco's, sold em all to YZ490 fans in the USA.

Cheers
Kim

[YZ250H]

That looks awesome

[Ekka]

Nice