After reading my post, im not sure i understand what i just said either

 

I do a lot of mud/creek/pond riding... even when the engine is extremely hot, I've never seen an issue with it. Maybe if the block was thinner, or the temp change was extremely different... (say 300 degrees or more)

 

I have heard of extreme conditions when the water is at or near freezing conditions and if a quad is submerged quickly then the cylinder head crack. But the quad was running very hot as well. It can happen but t is so rare and conditions have to be perfect for it to. With that being said, I would think that even though we all do it the quick change of tempature on the engines can't be great for it. But it hasn't stopped me and I doudbt it will stop anyone else from going where they want. I guess no matter what brand of quad we drive they all hold up pretty well for the conditions we put them through. It gets old hearing people complain about problems that happen and they only have 500 or 1000 miles on it. Take your automobile through what you take your quad through. Then see what the lemon is. I've heard most atv companies say that 100 miles on a quad is like putting 10,000 on a car or truck. How many times do we service our cars in 10,000 miles?