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Author Topic: Cb360 piston rusted and stuck in cylinder  (Read 722 times)

Offline stubsryan

  • Posts: 24
Cb360 piston rusted and stuck in cylinder
« on: Jul 30, 2017, 04:00:04 »
Picked up an old cb360 and it wouldn't turn over. So I pulled the engine out and took the head off. Wow it's really stuffed. Now I'm trying to get the cylinder block off for machining and the piston is super stuck. Soaked it in oil for a few days after cleaning to no avail. Just tried heat, rubber mallet and even a hammer on the piston. Won't budge. Any ideas?


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Offline stubsryan

  • Posts: 24
Re: Cb360 piston rusted and stuck in cylinder
« Reply #1 on: Jul 30, 2017, 04:07:40 »



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Offline datadavid

  • Posts: 1120
Re: Cb360 piston rusted and stuck in cylinder
« Reply #2 on: Jul 30, 2017, 04:34:46 »
Where does all that gravel come from??

Offline datadavid

  • Posts: 1120
Re: Cb360 piston rusted and stuck in cylinder
« Reply #3 on: Jul 30, 2017, 04:37:10 »
My suggestion would be to pour some diesel on there and torch the cylinders until the diesel starts boiling, then use a BIG hammer and a block of wood on the piston..

Offline datadavid

  • Posts: 1120
Re: Cb360 piston rusted and stuck in cylinder
« Reply #4 on: Jul 30, 2017, 04:37:42 »
Get that gravel out of there first of course.

Offline stroker crazy

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Re: Cb360 piston rusted and stuck in cylinder
« Reply #5 on: Jul 30, 2017, 06:33:59 »
or try acetone and ATF …

Crazy
“Ride like the Wind” W.H.

Offline trek97

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Re: Cb360 piston rusted and stuck in cylinder
« Reply #6 on: Jul 30, 2017, 07:57:45 »
or try acetone and ATF …

Crazy

+1  50/50 mix

Offline stubsryan

  • Posts: 24
Re: Cb360 piston rusted and stuck in cylinder
« Reply #7 on: Jul 30, 2017, 08:35:50 »
So it looks like sand but I think it's actually corrosion. Must have got a crap load of water in there at some stage?!

What's ATF?

Thanks for the help!


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Offline stubsryan

  • Posts: 24
Re: Cb360 piston rusted and stuck in cylinder
« Reply #8 on: Jul 30, 2017, 09:20:56 »
Automatic transmission fluid


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Re: Cb360 piston rusted and stuck in cylinder
« Reply #9 on: Jul 30, 2017, 12:29:30 »
Get a new cylinder block (and head)? Pretty cheap and plentiful...
"Remember when Goldwings were sexy? Me neither" -- Comet Tavern bathroom, Seattle.