View Full Version : Water Temperature Sender

04-14-2015, 05:57 PM
I'm looking to add a water temperature gauge and sender (stock bike dash just gives hot/cold, not temperature).

Any advice for where/how to install the temperature sender? I see the stock sender is threaded into the back of the cylinder head. I'm thinking maybe inline where the coolant leaves the engine on it's way to the radiator. I have a Gen 2 hayabusa.

04-14-2015, 11:21 PM
Is there a plug on the front of the cylinder, driver side, behind the exhaust? I mounted mine there on the gen 1. You can buy an adaptor plug from heads up performance.

04-15-2015, 12:11 PM
Thanks for the info PLK. I see the temperature sender coming in the back of the cylinder head (#27). And two bigger plugs coming in the front of the cylinder. I just need to confirm that those front plugs go into the water jackets.

http://i1355.photobucket.com/albums/q710/justindutton66/Buggy/Cylinder%20Head_zpsuazqwrmj.gif (http://s1355.photobucket.com/user/justindutton66/media/Buggy/Cylinder%20Head_zpsuazqwrmj.gif.html)

http://i1355.photobucket.com/albums/q710/justindutton66/Buggy/Cylinder_zps1g8ivsii.gif (http://s1355.photobucket.com/user/justindutton66/media/Buggy/Cylinder_zps1g8ivsii.gif.html)

04-15-2015, 04:00 PM
Any particluar reason to pull temp from engine instead of water line out to rad?

04-15-2015, 04:07 PM
Nope, just figured it would be slightly cleaner to thread into the engine. I may end up going inline in the hose heading to the radiator.

04-16-2015, 06:02 AM
Pop a plug loose and see what comes out. It should let you know right away.

I know the driver side plug on the gen 1 holds coolant even after draining the block from the water pump.

04-18-2015, 06:26 PM
Thanks for the help PLK. I found an easier way for my setup. I already had this bypass coupling in line to the radiator, so I threaded the temp sensor into the bottom side of the coupling. I ran a ground wire to the coupling as well, seeing as how the coupling is isolated by hose on both sides.

http://i1355.photobucket.com/albums/q710/justindutton66/Buggy/20150418_113204_zpsylmwpuia.jpg (http://s1355.photobucket.com/user/justindutton66/media/Buggy/20150418_113204_zpsylmwpuia.jpg.html)