Author Topic: Water cooled YZ490 barrel  (Read 2975 times)

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Offline Marc.com

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Re: Water cooled YZ490 barrel
« Reply #1 on: April 22, 2009, 03:13:14 pm »
teas maid, what were those things that you used to go camping with and you could drop burning wood down the bore and make a nice cuppa.  ;D
In this case you just drop a pinging YZ 490 piston down the bore.
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Offline LWC82PE

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Re: Water cooled YZ490 barrel
« Reply #2 on: April 22, 2009, 05:41:19 pm »
i head about that one a while back, im pretty sure its off a formula 500 speedway car running a YZ 490. i rebuilt a different YZ490 speedway engine last year but that had a aftermarket Smythco water cooled head but still had the air cooled barrel.  A guy called in yesterday who used to race speedway and said that the YZ490's were common.
« Last Edit: April 22, 2009, 05:46:00 pm by LWC3077 »
Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022