Spring temps are here, BIKE IS HOT!!!

[IShartd]

Springtime here in Cali, bike is running hot. I have to keep stopping and packing snow in the rads and block. I haven't let it get over 225 but it has no problem climbing there if I'm getting after it. Should I pull the thermostat out of the thermobob? Should I invest in a fan?

 

[capulin overdrive]

Seems like a map with more fuel could help with the PR2?




Could tell my bike was running hotter than with the stock ECU on the #1 map.

 

[IShartd]

Seems like a map with more fuel could help with the PR2?




Could tell my bike was running hotter than with the stock ECU on the #1 map.

Running suggested #s and map from Jeff. Should I really have to mess with the mapping based on ambient tempeture and snow conditions? Bike runs insanely well.

 

[lundracing]

Tunnel cooler. Only way to go.


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[skidooboy]

always run best, just before they blow. yes tune, fuel, timing will mess with temp. Ski

 

[capulin overdrive]

Running suggested #s and map from Jeff. Should I really have to mess with the mapping based on ambient tempeture and snow conditions? Bike runs insanely well.

Know they run good, but put it out there as something that would be easy to try.




Could give him a call and see what he thinks, powder maps add more fuel for days when the bike is gutted all day long, so he's thought of deferent scenarios.

 

[CATSLEDMAN1]

spring wet cement

We spent two days in sunshine and freshwet cement snow, on climbs our bikes would climb to 230 +. Stop and pack with snow............or add heat exchanger. Been there every spring, next is more setup spring snow and no temp issues.

that wet cement just works the motor too much and you don't have ground speed.

 

[IShartd]

We spent two days in sunshine and freshwet cement snow, on climbs our bikes would climb to 230 +. Stop and pack with snow............or add heat exchanger. Been there every spring, next is more setup spring snow and no temp issues.

that wet cement just works the motor too much and you don't have ground speed.

Yeah those are the exact conditions right now. Just deal with it I guess.

 

[Rbott]

Why not just add a fan to the radiator? Trailtech sells kits for most bikes.

Ryan

 

[up-high]

^^ What he said.

 

[more snow]

I run the oem fan on my ktm 500 with a manual on,off switch.

 

[IShartd]

Went out today, pulled the Tstat and skid plate. Definetly ran cooler, only had to pack with snow a few times after long pulls. Think I'm gonna invest in a fan, be nice to not have to constantly worry about watching temps. Trail tech looks pretty trick with temp sensor actuated on/off

 

[POLZIN]

Somewhat off topic but I new to snow bikes so forgive my ignorance. I assume Ice scratchers are still needed to lubricate the skid on trails and harder snow conditions? I haven't seen a bike that had them or any discussion on the subject.

 

[yooper01]

Somewhat off topic but I new to snow bikes so forgive my ignorance. I assume Ice scratchers are still needed to lubricate the skid on trails and harder snow conditions? I haven't seen a bike that had them or any discussion on the subject.

While scratchers do serve that function, they mostly throw snow into the track and skid that later comes into contact with the heat exchanger, thus keeping sleds cool in low snow conditions.

Most snowbike setups only use radiators to cool unless the owner has done a tunnel cooler setup.

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[needpowder]

Somewhat off topic but I new to snow bikes so forgive my ignorance. I assume Ice scratchers are still needed to lubricate the skid on trails and harder snow conditions? I haven't seen a bike that had them or any discussion on the subject.

Yes. They will save your hifax (and help the rest of your skid) I have them on mine. Rarely use them but i've been glad to have them when needed. Springtime when i time it wrong and it hasn't softened yet.

 

[POLZIN]

yes I'm quite familiar with the cooling systems on sleds. Been riding and wrenching 35years. I've spent hours reading and don't recall the subject being discussed. seems like cable scratchers ight be a good fit for the application

 

[sierraclimber]

Get a fan for sure. I went with trail tech. I ride cali too and air temps can get quite warm for spring riding. On my last ride it started over heating and I was confused because it hasn't over heated all season. Boiled out 10 ounces of radiator fluid before I noticed. Then found my fan electrical connector had come apart and wasn't turning on.

Filled it with water, plugged it back in and no problems the rest of the day. Proof that a fan makes a huge difference.

Also this higher 2.0 bar radiator cap will help. Has a built in gauge for easy monitoring. https://www.rockymountainatvmc.com/...with-Temperature-Gauge?term=tusk+radiator+cap

Together these will solve your problem. Mine is a 525 bored to a 540 and it would love to over heat if it wasn't for these mods.