Pics Prosport Digital Temp Gauge/ Lake Effect Riser-'12 Apex

[TBay Sledhead]

Just an FYI w/ having the water-T in the vertical hose, I started my sled just to see that there were no leaks and that everything was working correctly and to bleed the system, (first time since picking up the sled), and the temp started to rise in less than 30 seconds it seemed. There was not an issue w/ the thermostat keeping water from flowing and reading the temperature readily.

Both the vertical & horizontal hoses that attach to the lower half of the thermostat housing will always contain coolant circulating at the actual engine temperature since they are both on the engine side of the thermostat. That is why Yamaha has the OEM coolant temperature sensor on this side of the thermostat.



I am not sure why Ulmer recommends putting the sensor in the horizontal hose. It would seem to me that the vertical hose is a better location as there is more room to splice it in. I have mine in the horizontal hose but it is a real tight fit and it pushes the thermostat housing out slightly.

That is not so, the hose going into the thermostat housing is return from the engine oil cooler whic will not be true engine temp.

 

[Blue Dave]

Just an FYI w/ having the water-T in the vertical hose, I started my sled just to see that there were no leaks and that everything was working correctly and to bleed the system, (first time since picking up the sled), and the temp started to rise in less than 30 seconds it seemed. There was not an issue w/ the thermostat keeping water from flowing and reading the temperature readily.

Both the vertical & horizontal hoses that attach to the lower half of the thermostat housing will always contain coolant circulating at the actual engine temperature since they are both on the engine side of the thermostat. That is why Yamaha has the OEM coolant temperature sensor on this side of the thermostat.



I am not sure why Ulmer recommends putting the sensor in the horizontal hose. It would seem to me that the vertical hose is a better location as there is more room to splice it in. I have mine in the horizontal hose but it is a real tight fit and it pushes the thermostat housing out slightly.

That is not so, the hose going into the thermostat housing is return from the engine oil cooler whic will not be true engine temp.

Allen Ulmer has since informed me of that fact. I would however still suspect that when the thermostat is closed that my statement would be mostly accurate. However that is really a moot point since we are mostly only concerned about high engine temperatures which of course only occur when the thermostat is open. Therefore I stand corrected.

 

[TBay Sledhead]

Yes but when the thermostat opens fully, if I am correct the bottom port going down gets shut off and all of the coolant is directed to the coolers giving a false reading.

 

[CaptCaper]

Still confused so which hose is the best for temp readings. Not for install ease but for the most accrate readings?

 

[TBay Sledhead]

The tube coming from the top of the engine. The horizontal tube coming into the engine side of the housing. Part no. 12 on the micro fiche.

 

[CaptCaper]

got it..thanks

 

[blade072]

Still confused so which hose is the best for temp readings. Not for install ease but for the most accrate readings?

I have done it both ways. Vertical on my 07 Attak and Horizontal on my 2011 Apex XTX. The horizontal mounting gives you a more accurate reading and in most cases will read a higher temperature. You will also get a quicker temperature reading in the horizontal position. I know I am comparing two sleds, but I don't think that should matter. It is a little more difficult to install in the Horizontal hose, but worth it.

 

[02ViperMody44]

It worked great, and got a lot of positive feedback from people. Most thought it was a factory gauge. I would definately recommend it.

 

[APEX 06]

I feel like a bone haed for asking this but where did you pick up the power for the gauge.

 

[Nytrosnox]

Love the riser I am thinking now of getting that one in Blue! My wife a I also have the gas caps we are awere that some might rather take ours rather than buy one so we carry our old ones with us. Three years and no light fingers. Yamaha people do admire and respect other Yamahas. But wish they made a locking one.

 

[02ViperMody44]

I feel like a bone haed for asking this but where did you pick up the power for the gauge.

I picked up power from, I believe, the blue/white wire that connects to the ignition switch. Whenever I turned on the key, I could power up the gauge and check temps. No issues at all with it there.

 

[Bluebullet]

Nice mod, that riser looks great!

 

[Grimm]

I mounted my gauge in the handlebar pad.

 

[THKSNOW]

Anyone have the step by step directions for this? How much fluid loss is there when installing the T assuming you are cutting the hose? Also where are you bleeding the air from the system when done? It doesn't look like that tough of a job, is it harder than it looks? Thanks.

 

[Irv]

Anyone have the step by step directions for this? How much fluid loss is there when installing the T assuming you are cutting the hose? Also where are you bleeding the air from the system when done? It doesn't look like that tough of a job, is it harder than it looks? Thanks.

It depends on the sled as far as filling back up goes but with the minimal loss doing this job, I would think just refilling your overflow bottle back up would do the trick??

I just completed installing a rear heat exchanger on my 08 Vector and I refilled the whole sled back up this way (only option for me as I have no rad)

I am still deciding on a temp gauge myself, just don't know where to mount it and if I really need it now with the addition of a rear cooler?