2 Re: Coolant Reserve Tank? Necessary Thu Nov 09, 2017 5:45 pm
Point-Seven-five
Life time member
Your coolant expands and contracts as the engine heats up and cools down. If not for the expansion tank/reservoir, you would be springing leaks all over the cooling system every time you use it.
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Present: 1991 K100RS "Moby Brick Too"
Past:
1994 K75RT "Ilsa, She Wolf of the SS"
1988 K100RS SE "Special Ed"
1994 K75S "Cheetos"
1992 K100RS "Moby Brick" R.I.P.
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
3 Re: Coolant Reserve Tank? Necessary Thu Nov 09, 2017 5:47 pm
DBRMN
Life time member
Ok another question then, when I bought the bike I didn't check the levels but I just have earlier today and found there is basically no coolant in the reserve tank (way below the min mark), does that mean this was a bad thing for my bike when the previous owner was driving it? Also can I make my own one to relocate somewhere?Point-Seven-five wrote:Your coolant expands and contracts as the engine heats up and cools down. If not for the expansion tank/reservoir, you would be springing leaks all over the cooling system every time you use it.
4 Re: Coolant Reserve Tank? Necessary Thu Nov 09, 2017 6:22 pm
robmack
Life time member
Yes, its a bad thing. Top up the tank with coolant to the minimum mark at least.
Yes, you can use any other design as an overflow tank. Some people have used ex-waterbottles. Some have welded up their own designs. Search the forum for ideas.
Yes, you can use any other design as an overflow tank. Some people have used ex-waterbottles. Some have welded up their own designs. Search the forum for ideas.
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Robert
1987 K75 @k75retro.blogspot.ca
5 Re: Coolant Reserve Tank? Necessary Thu Nov 09, 2017 6:30 pm
Laitch
Life time member
I missed rbm's post during my fervor of concentration while writing this prose masterpiece. He covered it all. Reading mine is just for those with nothing else to do.DBRMN wrote:. . . there is basically no coolant in the reserve tank (way below the min mark), does that mean this was a bad thing for my bike when the previous owner was driving it? Also can I make my own one to relocate somewhere?
"No coolant" is different than some coolant.
It might mean that the previous owner didn't bother checking coolant level, never flushed the system, nor changed the coolant. It could have been hard on the engine if the cooling fan was defective and the bike was ridden extensively while overheating. Coolant might have been lost from boil-over. Regardless, all components of the system should be checked for proper operation; the cooling system should be flushed and the coolant renewed before extended operation.
You can make your own coolant reservoir. The inlet of the hose in the tank should be at or near the tank's floor. Look in custom K-bike threads and you'll see some innovative work. This K1 conversion is nicely done. This photo shows the bike before it got its KOSO speedo. The arrow shows the tank.
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1995 K75 90,000 miles
6 Re: Coolant Reserve Tank? Necessary Thu Nov 09, 2017 7:45 pm
Point-Seven-five
Life time member
If the system has coolant missing, it is likely that the previous owner was rather ambivalent about servicing the cooling system. This often results in the use of tap water, or even worse well water that loads up the cooling system with a mineral coating.
That coating causes overheating and boilover which further coats the system with deposits.
As long as you are working on the bike it would be very advisable to flush all the crap out of the system, especially the radiator. This will insure that your cooling is optimized and the chances of that stinky antifreeze getting all over are minimized.
That coating causes overheating and boilover which further coats the system with deposits.
As long as you are working on the bike it would be very advisable to flush all the crap out of the system, especially the radiator. This will insure that your cooling is optimized and the chances of that stinky antifreeze getting all over are minimized.
__________________________________________________
Present: 1991 K100RS "Moby Brick Too"
Past:
1994 K75RT "Ilsa, She Wolf of the SS"
1988 K100RS SE "Special Ed"
1994 K75S "Cheetos"
1992 K100RS "Moby Brick" R.I.P.
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
K100-forum.com » Technical, repair and troubleshooting » Engine and transmission » Coolant Reserve Tank? Necessary
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