Topic: Greetings from Mississippi

[Blasbo]

I purchased a "project" bike this weekend. 77 - 78 CB750 with a locked engine. Supposedly locked up over an Iowa winter, not overheated. The price was too good to pass up!
About 25 years ago I had a Honda 350 and wished I never sold it.
This forum looks like it's full of useful information especially for a noob like me.

[Artfrombama]

I purchased a "project" bike this weekend. 77 - 78 CB750 with a locked engine. Supposedly locked up over an Iowa winter, not overheated. The price was too good to pass up!
About 25 years ago I had a Honda 350 and wished I never sold it.
This forum looks like it's full of useful information especially for a noob like me.

The guy I got my CB from said "Ran great when parked" 

The way I've used to "unstick" motors; pull the plugs, squirt plenty of penetrating in the cylinders, then every day rock the bike forward/backward in third.

[burmashave]

Welcome, Blasbo. Good luck on getting it unstuck. I've never unstuck an engine, but I do know that patience is one of the keys to using penetrating oil as the advice from Artfrombama.

[Blasbo]

Thanks for the advice. I did some research before I bought the bike and that seemed to be the consensus. Any particular kind of oil? I was thinking WD-40 because it has something in it to cut rust.

[burmashave]

You might want to check out this thread about penetrating oil comps. An acetone/ATF mix was rated best (and cheapest). You do need to be careful what acetone gets onto (it eats paint). I don't think it would be a prob pouring it down the cylinders, but I'm not an expert on that. Otherwise, I'd use Liquid Wrench or WD40.

[Artfrombama]

I've always liked Kroil or liquid wrench. PB Blaster is OK too.