3C Mark 2 or 3 - Engines with removable cylinders - O Rings

[ehannon]

Hi Guys,
New to the forum - great website BTW.
Im looking to buy either a mark 2 or 3 and I wish to know which engines had the cylinders with the rubber O rings at the bottom? Did some have them and some have non-removable cylinders?

The reason I ask is because i would perfer to buy a machine without because I know it is a big job to replace these if the rubber seals perish and let oil and water mix.

Many thanks in advance for the replies.
ehannon.

[agrimax]

They all had wet liners. (removeable).Would have thought therefore,they all had o rings at the bottom.Perhaps at the top too--can't remember!
Not really a big job to replace either. Head off,sump off,pistons out and push/pull or tap the liners up out. The disadvantage of a dry block engine,ie no liners, is that it would have to be bored out to accept dry sleeves when it becomes worn or goes porous.

[ehannon]

ok so they all had wet liners - thanks for that.

I thought i could have dodged a bullet!

Any particular engines/transmissions i should go for/not go for?
The powertrain model is handy but can lead to trouble i believe.