How can you blow a hole in an engine on 2 bikes?!?

[psychokreame]

my darling boyfriend was at the tt this year, on his zxr750, and he blew it up, not like a big ball of flames or anything impressive, he managed to create a hole in the engine. so now thats one dead bike getting repaired.

just this week he's done the same thing on his dads gpz1100, hole in the engine. starting to get a bit worried that my poor bike's going to end up the same now he's borrowing it. but how's it possible to blow a hole the size of a £2 in an engine?! or is it just that kawasaki's dont reenforce these things and my yamaha wont end up holey...

 

[tronary]

Might help if location of hole was specified.

 

[Yamamoto]

your sweet boyfriend likes to over rev the engine. This causes a catastrophic failure of the internal components and they usually end up flying out of the engine creating a hole. The solution is to educate your boyfriend in the correct operation of an internal combustion engine. Remember, ignorance destroys good engines.

 

[Ryan]

srry honey, im no expert on bikes

 

[Larry E]

Chances are the rod is breaking and going through the block. Sounds like he is abusing the bike.