Freeing a weather seized engine

[AshimotoK0]

When I finally pick up the CB350K1 US import I recently bought from DK I need to free up the 'seized from standing' engine. Any tips for what to put down the bores guys, as I would suspect piston rings corroded onto the bores. I read Marvel Mystery Oil somewhere I believe or was it Kroll or something sounding like that. Will be totally stripping the motor anyway.

Cheers ... AshD

[Trigger]

Diesel, works a treat. Let it soak in. Have had a bastard engine once that i put my big blow torch too.

[JamesH]

Also try Marvel Mystery Oil. Other thing to try is 50% Redex / 50% Diesel. The neat Diesel should probably shift it fine though....

[RGP750]

Shifted a British single once iron to iron with diesel and
a bit of waiting to give it a chance

[AshimotoK0]

Cheers for the advice guys. Never bought a USA import before. TBH I bought the bike for the wheels but it looks so nice in the pics that I am thinking of adding it to the collection and restore it to standard or do a special with it.

Cheers .. Ash

[UK Pete]

Ash that's how my obsession started, every time I bought a bike for spares I ended up keeping it LOL
Pete

[K2-K6]

Hey Pete, at least it's a legal obsession.......until those Eurocrats get hold of us lot.

Ash, I'd go with the diesel as well and leave it for a good soaking followed by rocking it back and forth in second gear if you're in a postition to do that with the bike. My mates dad ran a scaffold hire business and always had a barrel of diesel which he chucked any rusted fittings in to soak and even the most siezed ones could be got going again after that usually.

[Lynx]

If you have trouble with the diesel, try PlusGas. It's thinner and has a bubbling action.

[Bryanj]

The yanks seem to like acetone and ATF 50/50

[AshimotoK0]

Wow spoilt for choice !
Cheers everyone ... Ash

[matthewmosse]

I had a rusted up road roller part that broke 2 bearing pullers trying to get the pulley off a shaft, even whilst applying heat, leaving to soak in old engine oil and penetrating oil for a few weeks ( or months) then tapping with a hammer against what was left of the puller has finally resulted in some movement, same story on an old set of split rim wheels that had rusted to close fitting drum brakes, soak in old engine oil and penetrating oil, plus cautious use of a hammer got it appart with no dammage. I am sure diesel would be just as effective as pentrating oil., just something to aid old engine oil to creep a bit. Best thing is old engine oil is free, and mopped up with old rags it makes a handy fire lighting aid.

[Lynx]

On your last point Matthew. Diesel makes a fantastic barbeque lighter. Much better than petrol!

[matthewmosse]

We run entierly off wood for the central heating and hot water in winter, just immersion heater as backup or when the photo vols are generating excess electric tricky. I light a lot of fires, for the bbq I prefer a electric paint stripping gun aimed into the base of the charcoal, doesn't taint the food. Used engine oil or brake fluid goes into the central heating boiler on those really damp days when nothing wants to burn. A capful of used oil on a sheet of newspaper still belts out enough heat to light even a stubborn fire.