yz/wr 450 boyesen waterpump
Posted May 21, 2004 - 06:12 AM
Posted May 21, 2004 - 10:29 AM
Posted May 21, 2004 - 12:01 PM
Posted May 21, 2004 - 01:30 PM
The design of Boyeson's impellar for the centrifugal pump is a superior design to Yamaha's. There is less cavitation and better heat transfer from the engine to the radiators. The more rapid fluid flow, the more efficient heat removal off of the engine.
A cooler engine will have less HP loss due to heat and will increase engine life.
Last time I checked, Boyeson offered a replacement impellar, but not water pump cover.
Posted May 21, 2004 - 02:37 PM
Posted May 22, 2004 - 05:25 AM
Posted May 22, 2004 - 02:51 PM
Posted May 22, 2004 - 03:53 PM
Q = M x (T hot - T cold)
Q = heat transfer
M = mass flow rate
T hot = your engine
T cold = ambient temp
unless I am AFU, which according to my wife is 100% of the time (unless she is sleeping).
Posted May 23, 2004 - 05:53 AM
Posted May 23, 2004 - 09:53 AM
Posted May 23, 2004 - 11:32 AM
I think an electric fan is the best choice for low speed technical riding and would be money well spent with the existing cooling system. Just my opinion.
Indy, I concur!
Posted May 23, 2004 - 02:14 PM
And how do you do that quote thing??
Posted May 23, 2004 - 03:01 PM
What I do is left click and drag over what I want. Then with it highlighted, I right click over it. This gives you a pop up window. I click on COPY. Then I hit the reply icon. Then, when the reply post comes up, click on the QUOTE in the UBB code box. I again right click between the two "quotes". This gives me a pop up. I click on paste.
You can also copy, paste, cut under the EDIT in your toolbar at the top of your page. You will still need to click and drag over what you want to copy, and use the QUOTE in the UBB box.
Posted November 14, 2005 - 09:26 AM
I'm confused MountainMan, did you start having overheating issues after you put the Boyeson pump in or did you have them even earlier than that and fix them with the Evans NPG-R. If you did have them earlier and fix them, what was the point of buying the Boyeson pump?
Posted November 14, 2005 - 01:15 PM
Posted November 14, 2005 - 03:13 PM
It has been done before. KTM have radiator fans available through their hard parts range.........
A fan on the radiator would however help a lot in slow going because that's whats not moving fast enough (Air!) But no one is going to put one of those on a dirt bike, at least not yet..My Dos Peso's.. Big Jim