thermostat question

[bambam625]

heyo,

finally got the replacement thermostat in the mail for my valkyrie. while i was draining everything and taking it apart, i found a clog in the bottom of the resorvoir and cleaned it out along with blew out all the lines. anyway, i think that was my problem, but, while i have everything apart i figured i might as well replace the thermostat. however the replacement one i got in the mail looks nothing like the one i have in there, the one in the bike has a hole in it and has flat sides on the bottom, where as the replacement has no orientation holes,and the sides are tapered, would it be ok to install this ?

https://www.ebay.com/itm/New-Thermostat-For-HONDA-Valkyrie-1500-GL1500C-1997-2003/323958614089?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649


edit: shortly after I posted this I decided to put it in (before I saw your answers). I had to run to oreillys to get a new gasket as the old one was screwed up. It works fine. Will update if any issues.

Between clearing the clog in my relief hose that goes to the reservoir, and replacing the thermostat,and putting new coolant in,  the high temp light hasnt came back on, even with letting it sit and idle for over 30 mins (not something i typically do, just testing to see if the overheat light would pop on)

[Chrisj CMA]

If you bought it on EBAY (why would you?) And its different I wouldn't trust the EBAY one.  Order an OEM one and be sure

[Grandpot]

http://www.jkozloski.com/generic_parts.htm

That's the list of generic parts list.  You'll find a thermostat there

[RonW]

The oem Valk thermostat is like this. THERMOSTAT
19300-MG9-000

[John Schmidt]

I used the High Flow 160 degree t'stat from the Generic List last time I was in there a couple years ago. Works fine, got it locally for a lot less than if you ordered from Honda.

[sandy]

I used the High Flow 160 degree t'stat from the Generic List last time I was in there a couple years ago. Works fine, got it locally for a lot less than if you ordered from Honda.

John. the ICM has a temp sensor. When the engine a runs too cold, the timing will run retarded. Put a new OEM stat in it.

[John Schmidt]

Sandy, not necessary. I have a temp gauge(among other gauges) on the bike and it maintains the 160 fine. If I run at higher speeds for an extended period(75-80) the temp sometimes will creep a little higher, depending on the outside temp. I put that type of t'stat in to help with cooling in summer when I lived in Fla. and stuck in traffic....which was most of the time while running errands. It helped stablize the engine temp better under those conditions which is what it's designed for from the start.

[indybobm]

Looking at the specs for the Engine Coolant Temperature Sensor it says that the changes at 176 degrees. Anything below that and the engine always thinks it is cold.

[98valk]

I used the High Flow 160 degree t'stat from the Generic List last time I was in there a couple years ago. Works fine, got it locally for a lot less than if you ordered from Honda.

John. the ICM has a temp sensor. When the engine a runs too cold, the timing will run retarded. Put a new OEM stat in it.

u got that backwards, below 160F the ICM advances the timing per the Dyna ignition manual.

[WintrSol]

I used the High Flow 160 degree t'stat from the Generic List last time I was in there a couple years ago. Works fine, got it locally for a lot less than if you ordered from Honda.

John. the ICM has a temp sensor. When the engine a runs too cold, the timing will run retarded. Put a new OEM stat in it.

u got that backwards, below 160F the ICM advances the timing per the Dyna ignition manual.

The service manual doesn't say that, exactly, but does say the rpm should increase by about 200 rpm with a chilled sensor, which implies timing advance, to me.

[98valk]

I used the High Flow 160 degree t'stat from the Generic List last time I was in there a couple years ago. Works fine, got it locally for a lot less than if you ordered from Honda.

John. the ICM has a temp sensor. When the engine a runs too cold, the timing will run retarded. Put a new OEM stat in it.

u got that backwards, below 160F the ICM advances the timing per the Dyna ignition manual.

The service manual doesn't say that, exactly, but does say the rpm should increase by about 200 rpm with a chilled sensor, which implies timing advance, to me.

I have a dyna igntion and the instructions state ignition advance and is what the ECT mod is based on.
below 160F there is additional advance from 800 to 3500 rpm. when the engine reaches 160F sensor will be around 580ohms the additional advance stops.
dyna website still shows the instruction PDF file but is not allowing access.
the instruction shows the dyna curves and the OEM ICM curves.

[Bighead]

Hey if it works for John let it be.

[John Schmidt]

Hey if it works for John let it be.

Just keep in mind....I installed the hi-flow version of the 160. 

[indybobm]

I used the High Flow 160 degree t'stat from the Generic List last time I was in there a couple years ago. Works fine, got it locally for a lot less than if you ordered from Honda.

John. the ICM has a temp sensor. When the engine a runs too cold, the timing will run retarded. Put a new OEM stat in it.

u got that backwards, below 160F the ICM advances the timing per the Dyna ignition manual.

I'm not sure where 160 degree figure comes from, according to the Honda Service manual, at room temperature the sensor should read between 2.0 and 3.0 Kohms. At 176 degrees it should read 200-400 ohms.

From the Service Manual:
Remove the ECT sensor from the thermostat housing.
Suspend the sensor in cold water. Heat the water slowly,
using an electric heating element.
Measure resistance between the terminals.
STANDARD:    2.0-3.0 kohms at 20°C (68°F)
              200-400 ohms at 80'C (176°F)


With a 160 degree thermostat, the ECT Sensor will not change when it should.

[98valk]

I used the High Flow 160 degree t'stat from the Generic List last time I was in there a couple years ago. Works fine, got it locally for a lot less than if you ordered from Honda.

John. the ICM has a temp sensor. When the engine a runs too cold, the timing will run retarded. Put a new OEM stat in it.

u got that backwards, below 160F the ICM advances the timing per the Dyna ignition manual.

I'm not sure where 160 degree figure comes from, according to the Honda Service manual, at room temperature the sensor should read between 2.0 and 3.0 Kohms. At 176 degrees it should read 200-400 ohms.

From the Service Manual:
Remove the ECT sensor from the thermostat housing.
Suspend the sensor in cold water. Heat the water slowly,
using an electric heating element.
Measure resistance between the terminals.
STANDARD:    2.0-3.0 kohms at 20°C (68°F)
              200-400 ohms at 80'C (176°F)


With a 160 degree thermostat, the ECT Sensor will not change when it should.

the 160F is from dyna instructions.
I have autometer gauges and at about 160F the cold advance does shut off with their ICM.
I never checked with the OEM ICM.

using a 160F thermostat just means it will take longer for the engine to get to operating temp.  The operating engine temp is determined by the radiator size.