Running Temperature

[Lyle]

Hi All.. I have a LightWing GR 582, have recently put a new Bluehead in, I feel it’s running a bit hot. Can anyone tell me what the running Temperature should be. Cheers!

[Kenlsa]

Best ring Bert Flood, the agent.

Ken

[Thruster88]

The manual says coolant temp min 65°C max 80°C for the blue head, CHT 150°C at the spark plug seat.

My thruster blue head with the tall radiators sits on 65 always, the old grey head with short radiators would get up to 85 on a really hot day at climb power.

[facthunter]

Make sure you aren't losing coolant. The rubber in the cap should seal well enough for all the expanded coolant to return. The usual fix for hot running is a larger radiator with those motors. Nev

[Lyle]

Best ring Bert Flood, the agent.

Ken

Will do thanks Ken!

[Lyle]

The manual says coolant temp min 65°C max 80°C for the blue head, CHT 150°C at the spark plug seat.

My thruster blue head with the tall radiators sits on 65 always, the old grey head with short radiators would get up to 85 on a really hot day at climb power.

Thanks for the info Thruster 88, much appreciate!

[Lyle]

Make sure you aren't losing coolant. The rubber in the cap should seal well enough for all the expanded coolant to return. The usual fix for hot running is a larger radiator with those motors. Nev

Will definitely check that out, thanks facthunter!

[Blueadventures]

List what temp your gauge is showing say at end of climb and general cruise. Then people can comment further.

[Lyle]

List what temp your gauge is showing say at end of climb and general cruise. Then people can comment further.

Thanks Blueadventures for the tip, will keep a record next time I’m up!

[facthunter]

Try to bleed all air from the system. It will cause issues (hotspots) If your radiator capacity is marginal the ambient temp will cause a quick effect. Are they completely clean in the core? High % glycol will not cool (Take heat away) as well as pure water does. Nev

[Downunder]

I believe Rotax upgraded the radiator cap to a higher blow off pressure at some point. (Should be written on the top)

Might be worth seeing what you have and if it's the right one.

[Lyle]

Try to bleed all air from the system. It will cause issues (hotspots) If your radiator capacity is marginal the ambient temp will cause a quick effect. Are they completely clean in the core? High % glycol will not cool (Take heat away) as well as pure water does. Nev

Thanks for that info, I will look at the coolant percentage!

[Lyle]

I believe Rotax upgraded the radiator cap to a higher blow off pressure at some point. (Should be written on the top)

Might be worth seeing what you have and if it's the right one.

That is a good point, bout to ring Bert Flood now to find out the correct poundage Etc.. Cheers