Replacement Thermostat - Wrist Twisters
 
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post #1 of 12 Old 04-02-2014, 05:39 PM Thread Starter
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Replacement Thermostat

I saw somewhere that the standard Honda Motorcycle thermostat could be replaced with one from an automobile??
Any Ideas? Part numbers? make and model of auto?
Thanks
David

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post #2 of 12 Old 04-02-2014, 05:42 PM
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Quote:
Originally Posted by holeysocks View Post
I saw somewhere that the standard Honda Motorcycle thermostat could be replaced with one from an automobile??
Any Ideas? Part numbers? make and model of auto?
Thanks
David
Just get OEM, its not too bad at $16 from Partzilla.

37870-KRJ-901 SENSOR, WATER TEMP $16.10

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post #3 of 12 Old 04-02-2014, 05:44 PM Thread Starter
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That is the Temp Sensor, not the Thermostat

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post #4 of 12 Old 04-02-2014, 05:50 PM
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isn't that just the water temp sensor??? not the thermostat valve that opens and closes???

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post #5 of 12 Old 04-02-2014, 05:56 PM Thread Starter
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Yes it is!! I need the Thermostat,,, Motor takes a long time to come up to operating temperature,, $29.40 is a lot to pay is a auto thermostat is the same part

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post #6 of 12 Old 04-02-2014, 06:08 PM
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Originally Posted by holeysocks View Post
Yes it is!! I need the Thermostat,,, Motor takes a long time to come up to operating temperature,, $29.40 is a lot to pay is a auto thermostat is the same part
More details about your symptoms? How many miles? What outside temps is the bike being started in? The 9er is slow to warm up then other bikes because the engine is under stressed & has a low compression ratio. So may be you do not need to do anything?

Also, when the was the last time a coolant flush was performed (if ever)?

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post #7 of 12 Old 04-02-2014, 06:14 PM Thread Starter
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Well,, this morning it was about 70 Degrees, bike came to me with 9997 miles it now has 12265, it just seemed slow to warm up the last 2 time I have ridden

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post #8 of 12 Old 04-02-2014, 06:16 PM
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Quote:
Originally Posted by holeysocks View Post
Motor takes a long time to come up to operating temperature
How long, in what ambient temperature, for what kind of riding, to get the needle to where on the gauge ?

For example, if riding in the 40s of F, and just cruising along, the needle will not get past the break that is only a wee bit above the C = cold marking.

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post #9 of 12 Old 04-02-2014, 06:22 PM Thread Starter
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Temp was about 70 Degrees Cruising along 70MPH gauge just barely got to the break

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post #10 of 12 Old 04-02-2014, 06:27 PM
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The stock thermostat is 180 F and unless you are riding hard or in stop and go traffic, the temp gage will barely get past the cold mark. I removed mine and tested it in a pot of hot water on the stove and it was right on. Chances are that you have nothing wrong. I replaced mine with a higher temperature one for a car. It was a very close fit but had to dremel off maybe 1/8" on one side of the flange to get it to sit flush in the housing. Now the bike normally runs around 1/4 on the temp scale. I did it to experiment and see if it would lean out the exhaust to help with the stink. Seems to have.

This is the one I used. Available at most any auto parts store.

Stant Superstat™ Super Premium Thermostat, 195 Degrees Fahrenheit 45849: Get thermostats from the experts at Advance Auto Parts.

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post #11 of 12 Old 06-16-2015, 03:53 PM
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Quote:
Originally Posted by marylandmike View Post
The stock thermostat is 180 F and unless you are riding hard or in stop and go traffic, the temp gauge will barely get past the cold mark. I removed mine and tested it in a pot of hot water on the stove and it was right on.
Thanks. I was going to test mine for the same reason.

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post #12 of 12 Old 06-22-2015, 08:37 AM
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I was blown away at how cool the 919 runs. I don't have a lot to compare it to, but both the Street Triple and the 599 get hot no matter what the temps. The 919 will stay stone cold if you are going over about 55, no matter what the outside temps.

Just more proof that this motor is VERY under-stressed.

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