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Makotosun

Cleaning inside crankcase

  • yamahahaha
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Cleaning inside crankcase was created by yamahahaha

I'd like some suggestions on cleaning out the crankcase  (water,rust,dirt) without taking it apart. What cleaners or solvents to use ???
27 Mar 2021 20:16 #1

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Replied by RT325 on topic Cleaning inside crankcase

I'll be the baddie seeing nowone's answered & teach you bad habits but i have in the past waterblasted with bike upside down on its handlebars while revolving the crank. Had conrod hooked to a stretchie to stop it flailing around. Also got the nozzle as best i could into the oil feed hole to the mains so it at least tries to wash anything back into the crankcase & out. Sorry to say but there's no easy answer except pull it apart & do it properly.
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28 Mar 2021 16:10 #2

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Replied by MarkT on topic Cleaning inside crankcase

Crud is one thing (like after a meltdown) but when you mention rust I worry about the big end rod bearing. 

It doesn't take much rust and the bearing will fail quickly.  When it does, you might get lucky or you might end up like the guy who recently posted on here and a bad rod bearing took out the whole engine...  cases and cylinder got destroyed.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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28 Mar 2021 16:26 #3

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Replied by yamahahaha on topic Cleaning inside crankcase

Did I mention it was just a TINY bit of rust 

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28 Mar 2021 16:48 #4

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Replied by Yamadude on topic Cleaning inside crankcase

Photos !!!
 
You can just call me Dude.
Syracuse, New York
Current bikes: 1973 DT3, 1974 TY250, 1969 Triumph Bonneville, 1975 XS650, 1976 XS650, 1982 XS650, 1983 XS650, 2006 FJR1300
Last edit: 29 Mar 2021 09:29 by Yamadude.
28 Mar 2021 17:10 #5

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Replied by Rick C. on topic Cleaning inside crankcase

Tiny bits can go bad...Quickly !

  

 
Last edit: 29 Mar 2021 09:25 by Rick C..
29 Mar 2021 09:22 #6

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