Jump to content

How hot is too hot? (Trial Tech Vapor temperature sensor)

By TommyTheKid,
in WR400F/426F/450F

 Share

Recommended Posts

Contributor

TommyTheKid

Posted
Posted

I have a 2007 WR450 that has been setup for Supermoto, with a Trail Tech Vapor. The Vapor's temperature sensor was installed by the dealer (cause I am lazy), so I assume its in the "right" place. I also still have the dirt rims/wheels that I use for trail riding (which is irrelevant, but whatever). The other day I was driving in a bunch of steers (cattle) on my bike, along with my dad on his TTR-125 and was going very slow for about a mile or two.

1. My clutch hand was about to fall off by the time we got back cause this bike idles WAY faster than they walk in first gear on the WR. My dad's TTR was in 2nd and 3rd :banana:. I want a first gear that idles around 2-3 MPH and a 6th gear that can run about 65-70MPH at about 3-4k RPM :worthy:

2. The little red light on the Trail Tech Vapor lit up indicating that the coolant temperature was high. Note that I am using water+waterWetter (if that matters). The red light comes on at about 212ºF (the boiling point of pure water at sealevel). My bike was hovering right around 240-250ºF. When we got the cattle in, I went out for a blast up and down the driveway (1 mi round trip) at road speed and it was back to a much better sounding 160ºF. It was *not* hot that day, probably around 75-80ºF ambient air temp.

SO, How hot is too hot? Generally these bikes don't come with temperature sensors, so its hard to tell how hot they really are. Does anyone have any information on this?

Thanks in advance,

Tommy

Link to comment
Share on other sites
Contributor

TommyTheKid

Posted
  • Author
Posted

Yes, the overflow tank was maybe 1/3 to 1/2 full. It's much harder to see when its "clear" (the green stuff showed up a lot better). When it gets *real* hot like that, should I turn it off and wait for it to air cool or take a quick high speed blast into the wind (if there is any)?

I also wonder if maybe its running a bit lean (here I go delving into something I know nothing about). It might be jetted for 5000-6000 ft elevation and I had it down at 4000. I ride anywhere from 4000ft (ranch) to 10000 ft (mountains), so I am not sure what the happy medium really is.

I would say that 250 is running near max.

even with water wetter, antifreeze and pressurized system...

i would not want to go any higher

was it purculating in the overflow tank??

cheers

Warts

Link to comment
Share on other sites
Contributor

TommyTheKid

Posted
  • Author
Posted
that is why i had a fan on my wr that i made. i could keep my bike that was in complete supermoto trim at 170 and i didnt like any thing over 210

A fan was my thought as well, try to mickey mouse a 4-6" computer case fan in front of the radiator (in the white plastic stuff). It would be nice if I could tie into the trail tech somehow so that it would turn on and off. Do you have any pics/writeups of your fan mod?

~tommy

Link to comment
Share on other sites
Grand Master

FORMA MOTO

Posted
Posted
I have a 2007 WR450 that has been setup for Supermoto, with a Trail Tech Vapor. The Vapor's temperature sensor was installed by the dealer (cause I am lazy), so I assume its in the "right" place. I also still have the dirt rims/wheels that I use for trail riding (which is irrelevant, but whatever). The other day I was driving in a bunch of steers (cattle) on my bike, along with my dad on his TTR-125 and was going very slow for about a mile or two.

1. My clutch hand was about to fall off by the time we got back cause this bike idles WAY faster than they walk in first gear on the WR. My dad's TTR was in 2nd and 3rd :banana:. I want a first gear that idles around 2-3 MPH and a 6th gear that can run about 65-70MPH at about 3-4k RPM :worthy:

2. The little red light on the Trail Tech Vapor lit up indicating that the coolant temperature was high. Note that I am using water+waterWetter (if that matters). The red light comes on at about 212ºF (the boiling point of pure water at sealevel). My bike was hovering right around 240-250ºF. When we got the cattle in, I went out for a blast up and down the driveway (1 mi round trip) at road speed and it was back to a much better sounding 160ºF. It was *not* hot that day, probably around 75-80ºF ambient air temp.

SO, How hot is too hot? Generally these bikes don't come with temperature sensors, so its hard to tell how hot they really are. Does anyone have any information on this?

Thanks in advance,

Tommy

- changed stock jetting?

- uncorked?

If not, it will run hot no matter what you do.

Link to comment
Share on other sites
Community Regular

wartsnuff

Posted
Posted
Yes, the overflow tank was maybe 1/3 to 1/2 full. It's much harder to see when its "clear" (the green stuff showed up a lot better). When it gets *real* hot like that, should I turn it off and wait for it to air cool or take a quick high speed blast into the wind (if there is any)?

I also wonder if maybe its running a bit lean (here I go delving into something I know nothing about). It might be jetted for 5000-6000 ft elevation and I had it down at 4000. I ride anywhere from 4000ft (ranch) to 10000 ft (mountains), so I am not sure what the happy medium really is.

If it gets that hot.. you should NOT turn the bike off. start moving with low enging load and try get as much air through the rad as possilbe.

yea i agree totaly with krannie, if its still corked up it runs super hot.

its sure to boil over if you stop, and hot spot the motor. may/may not do damage :worthy:

have anyone thought of doing a oil cooler rather than fans on the rad ??

oil cooler i bet is the way to go!

cheers

Warts

Link to comment
Share on other sites
Contributor

TommyTheKid

Posted
  • Author
Posted

I would say that all the "free mods" have been done, AIS removed, grey wire, etc. The dealership did all those, plus jetting, etc just to make it run right at 5000+ ft. The exhaust is fairly open, its way louder than stock, but the big YZ450's at SuperMoto events blow me away (literally), so I think its uncorked.

It sounds like a blast down the driveway, or just a little loop is a good idea to cool things off. It sounds like fans are almost a necessity (and maybe lower gearing) for what I am trying to do with my bike (at least on non-race weekends) :worthy:

For the sheer cost of those fans above, I think I'll just use a computer case fan, and if it gets ruined, so be it. http://www.newegg.com/Product/Product.aspx?Item=N82E16835150007 .. for $2 or less, I can replace a lot of computer fans before I spend $70+ on those fancy ones :banana:

~tommy

Link to comment
Share on other sites
Collaborator

roushxteam199

Posted
Posted

hey.i used a spal usa fan. heres the one.http://www.spalusa.com/. I used the 4in fan part number 30103009. I just went to vip and got a 2 pole switch. I ran a wire from the postive side to my bars. Hooked up one side of the switch. Than i ran another wire from the switch to the fan. Than you run a wire from the fan to the negative side.

I made bracket for the fan using a sheet of copper. only thing i had. i used the tank shroud the bottom bolt on the side of the raditor to attach the plate. The other i mounted to what holds the rad, to the frame. just made simple triangle brackets to hold the fan. You have to mount the fan on your right side. i had do the stator mod for the light kit. you can find the stator mod on baja design web site.

i think i covered it mostly

ask me any more questions if you got any. i have told about 20 people how to do this.

thanks

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

ThumperTalk

Register a new account Sign In Now
 Share
Go to topic listing
×
×
  • Create New...
Terms of Use
Copyright
Privacy Policy