Ducatisti Forum - View Single Post - 998 Bayliss - Blown Piston
View Single Post
Old 26 Apr 08, 10:28 PM   #11 (permalink)
Mr.R
Ducati Legend
 
Mr.R's Avatar
 
Join Date: Sep 2006
Location: Cornwall
Posts: 1,927
Bike: Ducati's

Hi Jordy,
What your talking about is called hydrualic lock, the thing is when the motors running the pressure from the combustion chamber is trying to get out not suck in water from the cooling jacket.
So the engine pressurises the coolant not the other way round, hydrailic lock normally happens when the head gasket fails, the head or barrels cracked and the water seeps in when the motor cools down,
The bending of the conrods happens when you try to start a motor thats suffered this, as as you've said you can't compress a liquid.
But this failure happened after 30 min's of ridding?
I think the rod bent when it tried to compress the broken valve heads.
Of course I may be wrong again, but when I've suffered a blown head gaskets I've been covered in green coolant, from the expansion tank.
I did think about the hydrualic lock theory before posting my thoughts though.

Steve
__________________
Always room for one more Duke
Mr.R is offline   Reply With Quote