Hey guys -
From an academic standpoint, can anyone chime in with what would happen if you ran an S4R / S4RS without coolant? Sounds like an odd question, and would result in the engine grenading, but i'm looking for more specific info than "it will seize and you'll be hosed"
Thanks!
Adam
I am by no means the source but i would guess that the engine would overheat and eventually start on fire... Thats what happend to my demo derby car... radiator cracked all the coolant leaked out and boom she went up in flames... but it wasnt the block that started on fire... it was the rubber hoses and wires all around the engine, and fuel lines and such... i would even say that if the engine is to hot the combustion inside the cylinder probably gets adversely effected causigng the fuel to burn unnaturaly... but i dont know i am drunk on a sunday night... probably not the best resource...but hey....if it wasn't necessary it probably wouldn't be there in the first place
Typically tolerances are tighter on a liquid cooled engine because the temperature of specific parts of the engine can be cooled in a more controlled manner than on an air cooled engine. Without the coolant, the engine gets hot and parts start to expand past tolerable levels and they can seize.
^^ thats pretty much it. my S2R1k compared to a 749S... the 749S will heat up faster if you leave it sitting there then my S2R1k will, those things make some serious heat.
Quote from: He Man on May 03, 2009, 10:29:51 PM
^^ thats pretty much it. my S2R1k compared to a 749S... the 749S will heat up faster if you leave it sitting there then my S2R1k will, those things make some serious heat.
Ahh yes, the joys of the I-think-I-smell-barbecue-oh-it's-just-my-balls-cooking Superbikes. Seriously, the 996 was designed to kill off any opportunity to breed.
Definitely a DO NOT DO. For 1-2 min maybe a bit longer at idle you can get away with it. Any longer or under a load and you will stress the engine. Even if it didn't lock up immediately it would suffer long term effects. It puts a strain on the bearings b/c the oil is not sufficient to remove all the heat from the engine. It basically will overwork any moving part on the engine that makes contact with another part due to excess heat and expansion.
On most engines the engine will stall due to thermal expansion. The pistons and cylinder walls will eventually run out of clearance and bind. The engine may or may not start again after cool down and permanent damage will vary from engine to engine, but at the least, expect some piston skirt and cylinder wall scuffing, very bad on an engine with Nikasil coated cylinders.
Quote from: howie on May 04, 2009, 03:50:44 AM
On most engines the engine will stall due to thermal expansion. The pistons and cylinder walls will eventually run out of clearance and bind. The engine may or may not start again after cool down and permanent damage will vary from engine to engine, but at the least, expect some piston skirt and cylinder wall scuffing, very bad on an engine with Nikasil coated cylinders.
Excellent, just the info I was looking for.
No, I'm not doing it with either of my bikes [laugh]
Adam