Coolant Return Tank
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Coolant Return Tank
I have a question about the KDX coolant return tank,Is it really necessary??I realize its there for reliability but I'm setting up my 1990 KDX 200 for Northern California Hare Scrambles and was wondering if any of you folks have removed yours.
I currently race Scrambles with my CR 250 and I never overheat during a race,We really don't have much tight woods racing in this region.
Any Info is appreciated.
I currently race Scrambles with my CR 250 and I never overheat during a race,We really don't have much tight woods racing in this region.
Any Info is appreciated.
1996 CR 250R
1990 KDX 200 (92' KX 500 Suspension Front & Rear Wheels,Brakes,Swingarm,Triples,Seat,Tank and Shrouds)
1982 Yamaha IT 465 stump puller.
1991 Suzuki RMX 250
1990 KDX 200 (92' KX 500 Suspension Front & Rear Wheels,Brakes,Swingarm,Triples,Seat,Tank and Shrouds)
1982 Yamaha IT 465 stump puller.
1991 Suzuki RMX 250
- scheckaet
- KDXRider.net
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YES!
It's there, keep it, fluid will expand when warm (even when not overheating), where will it go if you remove the overflow? Most importantly, once the coolant is gone, you will run with less cooling efficiency, IMHO bad idea.
my .02 cents
wilf
It's there, keep it, fluid will expand when warm (even when not overheating), where will it go if you remove the overflow? Most importantly, once the coolant is gone, you will run with less cooling efficiency, IMHO bad idea.
my .02 cents
wilf
02 KX 200 hybrid: RB head and carb
Sold ☹ DRZ 400 SM
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Sold ☹ DRZ 400 SM
bike build: http://www.kdxrider.net/forums/viewtopi ... ike+stable
bike profile http://www.kdxrider.net/forums/viewtopi ... 0709#30709
newb info: http://www.kdxrider.net/forums/viewtopi ... 57#p117919
jetting guide: http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
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I took mine off. 2004 KDX220. I race eastern Hare Scrambles. I used to overheat almost any time I got caught in a bottleneck during a race. I took the bottle off and replaced the radiator cap with one from a KX500. The cap was marked 1.9 on the top. Remember, the bottle obstructs much of the air flow around that radiator. Since I took it off I've raced about 8 races, even in the summer. Its never overheated again.
- scheckaet
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I believe the 220 has more overheating / cooling issue than the 200
02 KX 200 hybrid: RB head and carb
Sold ☹ DRZ 400 SM
bike build: http://www.kdxrider.net/forums/viewtopi ... ike+stable
bike profile http://www.kdxrider.net/forums/viewtopi ... 0709#30709
newb info: http://www.kdxrider.net/forums/viewtopi ... 57#p117919
jetting guide: http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
Sold ☹ DRZ 400 SM
bike build: http://www.kdxrider.net/forums/viewtopi ... ike+stable
bike profile http://www.kdxrider.net/forums/viewtopi ... 0709#30709
newb info: http://www.kdxrider.net/forums/viewtopi ... 57#p117919
jetting guide: http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
- canyncarvr
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Cooling in the two bikes (200/220) is not the same...the 220 does indeed have cooling 'issues', the 200 does not. That a general statement referring to 'H' models.
That has no bearing on a 1990 KDX, however.
My question: 'Why?'
As stated, reliability is at question, so why take it off?
Is your res under the rear fender? I don't know when that changed in the 'E' series. Yeah...could go look it up...but I don't wanna.
A 1.9 cap? Yeow! Just 'cuz it fits don't make it right. If you drain all the coolant OUT it will never LEAK..is that a good plan?
Call it 'input'..maybe not 'info'...but, keep it on.
That has no bearing on a 1990 KDX, however.
My question: 'Why?'
As stated, reliability is at question, so why take it off?
Is your res under the rear fender? I don't know when that changed in the 'E' series. Yeah...could go look it up...but I don't wanna.
A 1.9 cap? Yeow! Just 'cuz it fits don't make it right. If you drain all the coolant OUT it will never LEAK..is that a good plan?
Call it 'input'..maybe not 'info'...but, keep it on.
Consider the source
Using a perceived level of knowledge to boost my self worth.
Non impediti ratione cogitationis
bike profile: !clicky!
- Jeb
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FWIW the coolant return tank provides a means of capturing coolant loss when the coolant system pressure is above that for which the cap is rated. All liquids expand upon heating but most expand VERY little. A 50/50 ethylene glycol / water mixture would expand about 1% for every 40F of temperature increase, so maybe 2-3% expansion? The air gap below the cap probably covers that . . .
- canyncarvr
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It's been said:Ondatrail wrote:They put it there for a reason IMHO. What are the benefits of taking it off?
Remember, the bottle obstructs much of the air flow around that radiator.
Consider the source
Using a perceived level of knowledge to boost my self worth.
Non impediti ratione cogitationis
bike profile: !clicky!
- Ondatrail
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