Scooterotica

Got a large block engine that have stored for 3 years. It has cyclinder and head attached. Kept in wooden crate and in dry conditions (brick built outbuilding). May not use this for a few more years but do not want any top end seizing issues due to lack of use. Is there any suggestions to keep the bore seize free in terms of a suitable lubricant.

Get one of them plastic bags that you use for clothes....you put vacuum onto the end and it sucks all the air (and moisture) out. Obviously a bit of 2 stroke down the barrel before you do this.

plenty of grease will help matters

strip top end 5 mins job now could be a bxstxrd later on

I would just put some two stroke oil in there and seal the inlet and exhaust

I would just put some two stroke oil in there and seal the inlet and exhaust

Would removing the rings help? Seems to be where most later problems crop up. Don't forget the gearbox though. I'm just dealing with a bike gearbox, although there was loads of cleanish oil, there is still a bit of the nasty on some of the gears. Can't see the bearings yet.
There's also those silca gel packs. You could get special preservative greasy stuff like the military smeared on everything in store.

TBH it's not the rings that would worry me, it'd be the big end bearing and other main engine parts that are hard to get at. I suppose one solution would be to oil it up and turn the engine over once in a while.

In theory if you've blanked all the holes up (carb and exhaust) no air can enter the engine so nothing should seize........in theory....

Personally i've had an engine stood untouched in a garage (cold, damp and miserable place !!) and two years later it fired up with the same fuel in !