I can't solve overheating with modified busa. Help please

[RacingJake]

Even simpler remove it and run it without one. :-)

I wouldn't cause coolant temp will affect Injector flow timing. I don't think Suzuki Engineers had that in mind.

 

[RacingJake]

That isn't really how cooling systems work. The thermostat will be wide open once the coolant is at a temperature where it is capable to boil. The job of a thermostat is to increase the temperature of the coolant so the engine is at operating temperature. Once the coolant is at operating temperature, the thermostat no longer has a job, unless the heat generation decreases and the coolant temp drops. Slowing the flow of the heat transfer medium (coolant) will not make it transfer more heat overall.

Let me add more, a thermostat can open wider past it's temp rating when a higher heat load from the engine is produced. The radiator cap will increase the boiling point of the coolant past 212 degrees due to it's pressure rating too. A faulty radiator cap can allow coolant into the over flow tank when the engine is not even over heating while some may think it is.

 

[RacingJake]

Here's my theory. The radiator had air in the system and the engine started to over heat as the coolant got hotter and hotter to the point the themo bulb expanded to the point of damaging the thermostat as in the picture. Thermo runaway.

 

[Berlin Germany]

sorry,
MY glas bowl is now in the repair so i can´t look into next ....
why my chance for distance diagnosis is over ´n out now.

 

[RacingJake]

Can't you pickup a Pressure Cooker from Kaufhalle ? I bought a 2 meter sail plane from them when I spent 4 years at Zweibrucken AB back in the day.

 

[busagreek]

I had the same problem.
HEAD GASKET

 

[BoldPilot]

I had the same problem.
HEAD GASKET

I solved the problem, it was thermostat.

 

[RacingJake]

Keep an eye on temp and coolant level to make sure there is nothing else going on. I'd do a compression and leak down test too.