good running temperature?

[M in KC]

FWIW, if you haven't already I would drain your complete cooling system from the recovery bottle to the rad. Rinse out the recovery bottle with clean water and remove the rad rinse it out with your garden hose as best you can and then carefully and I stress carefully clean all the debris out from in between your cooling fins on the rad. First start with your garden hose and lossen as many bug guts as you can and wash out as much sand as you can. Then use a compressed air gun with a rubber tip and 30 psi or so and blow the rest fo the bug guts and road grit out that wouldn't wash out. Carefully straighten any fins that are capable of being straightened. Again be careful as then fins are not a staight strip of aluminum in between the cooling tubes they are perforated to increase air flow and surface area. Hold the rad up to some light source and you will be able to see any blockage that still remains. Again with all this type of activity you are trying to get as much air flow through the rad as physically possible. Rinse out the motor with your garden hose and wash any skuz off the pressure regulating cap.

Button it back up and refill with a quality 50/50 antifreeze or 100% antifreeze/coolant and distilled water, distilled water only, combination at a 50/50 ratio.

Cooling is about heat transfer. Over time all liquid cooled sytems gets crud in them from the heating and cooling cycle which slowly compromize the efficiency of the cooling system. To optimize these system you have to get as much of the scale and what not out of the cooling systems. And with our bike's natural tendancies to run hotter than we would all like it only makes this type of service that much more important in my opinion. Sorry if I'm

[yamaha_george]

[quote="M in KC"

Cooling is about heat transfer. Over time all liquid cooled sytems gets crud in them from the heating and cooling cycle which slowly compromize the efficiency of the cooling system. To optimize these system you have to get as much of the scale and what not out of the cooling systems. And with our bike's natural tendancies to run hotter than we would all like it only makes this type of service that much more important in my opinion. Sorry if I'm [/quote]

M,
+5 on the advice,

the only extra bit is that I used to run "kettle de-scaler " liquid or central heating de-scaler in the system for a quick blast on the bike.

this removes any limescale build up from the system since I have never trusted PO's to use ONLY distilled water & anti-freeze in the system.

Once the bike has heat cycled, I then flush the system with a hose pipe and Drain thoroughly.!!!


I use "engine ice" but that is just me, 50/50 distilled water &anti-freeze is ok for road bikes racers as you have heard must use 100 % distilled water with water wetter added.

[shredex]

I might also by-pass my fan kick on sensor and make a manual switch.
I just dont know where the thing is that tells it to kick on, so I dont know what to by-pass. it might drain the battery faster, but I have a charger that I can just plug it to every night.

Its nice and cool out today and my bike ran exceptionally well. Im afraid for when winter comes, although, the temperature only gets to maybe 30 degrees at the least here. No snow. but I dont know if that will effect the bike starting up at all.

[95FZR600]

There's a tutorial some where on how to. I think yamaha george might even have it on his web site.

[yamaha_george]

There's a tutorial some where on how to. I think yamaha george might even have it on his web site.

not guilty, it is on this site as a sticky if you are talking about adding a manual fan switch?

[zero9243]

FWIW, if you haven't already I would drain your complete cooling system from the recovery bottle to the rad. Rinse out the recovery bottle with clean water and remove the rad rinse it out with your garden hose as best you can and then carefully and I stress carefully clean all the debris out from in between your cooling fins on the rad. First start with your garden hose and lossen as many bug guts as you can and wash out as much sand as you can. Then use a compressed air gun with a rubber tip and 30 psi or so and blow the rest fo the bug guts and road grit out that wouldn't wash out. Carefully straighten any fins that are capable of being straightened. Again be careful as then fins are not a staight strip of aluminum in between the cooling tubes they are perforated to increase air flow and surface area. Hold the rad up to some light source and you will be able to see any blockage that still remains. Again with all this type of activity you are trying to get as much air flow through the rad as physically possible. Rinse out the motor with your garden hose and wash any skuz off the pressure regulating cap.

Button it back up and refill with a quality 50/50 antifreeze or 100% antifreeze/coolant and distilled water, distilled water only, combination at a 50/50 ratio.

Cooling is about heat transfer. Over time all liquid cooled sytems gets crud in them from the heating and cooling cycle which slowly compromize the efficiency of the cooling system. To optimize these system you have to get as much of the scale and what not out of the cooling systems. And with our bike's natural tendancies to run hotter than we would all like it only makes this type of service that much more important in my opinion. Sorry if I'm

How careful do you have to be? Couldn't you use a pressure washer or is that too intense for the fins?

Cooling is about heat transfer. Over time all liquid cooled sytems gets crud in them from the heating and cooling cycle which slowly compromize the efficiency of the cooling system. To optimize these system you have to get as much of the scale and what not out of the cooling systems. And with our bike's natural tendancies to run hotter than we would all like it only makes this type of service that much more important in my opinion. Sorry if I'm

M,
+5 on the advice,

the only extra bit is that I used to run "kettle de-scaler " liquid or central heating de-scaler in the system for a quick blast on the bike.

this removes any limescale build up from the system since I have never trusted PO's to use ONLY distilled water & anti-freeze in the system.

Once the bike has heat cycled, I then flush the system with a hose pipe and Drain thoroughly.!!!


I use "engine ice" but that is just me, 50/50 distilled water &anti-freeze is ok for road bikes racers as you have heard must use 100 % distilled water with water wetter added.

what is a hose pipe?

[shredex]

A pressure washer will most likely bend the fins. Those things are very easy to bend.
Maybe just use a regular hose and block part of it with your thumb and that should be enough power to get it cleaned out without bending anything

[yamaha_george]

How careful do you have to be? Couldn't you use a pressure washer or is that too intense for the fins?

real careful those fins are very soft & they are old and getting the rad repaired might be a problem in your area, i've had one done in the UK but a member in Canada could not find a shop willing to do the work.

what is a hose pipe?

A garden hose