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Custom piston window Gray Ghost RZ 350

Started by Kawtriplefreak, May 03, 2024, 11:33:54 AM

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Kawtriplefreak

May 03, 2024, 11:33:54 AM


My Harbor Freight borescope revealed a newly installed window in the LH piston....

SoCal250

#1
May 03, 2024, 11:51:10 AM
:'( Bummer Tim, not good news. On the positive side, now you have a chance to rebuild it better like you always do.
75 Yamaha RD125B   75 Yamaha RD125B (project)
75 Yamaha RD250B   75 Yamaha RD200B (project)
73 Yamaha RD350     77 Yamaha RD400D   79 Yamaha RD400F  
91 Yamaha TZR250R  89 Yamaha FZR400   05 Yamaha FZ6   
05 Yamaha XT225TC  82 Honda MB5  02 Aprilia RS250 Cup (sold)

85RZwade

#2
May 03, 2024, 03:36:55 PM
That's in the crown, right?
I post waayyy too much

Kawtriplefreak

#3
May 03, 2024, 08:55:43 PM
Yes the crown as best I can tell. I am guessing and M in SC concurs that it is a failed crank seal.

kpke

#4
May 04, 2024, 07:17:50 AM
 :omg: That sucks Tim. Good to see the HF tool works but what a horrible sight.
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RZV500 R6 Suspension and Bodywork
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m in sc

#5
May 04, 2024, 08:23:27 AM
likely, for sure, since its unknown and i know that bike sat for many years not run.
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