Thermostat Stock vs Aftermarket


Information and questions on GL1200 Goldwings (1984-1987)
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Breiber
Posts: 42
Joined: Wed Apr 06, 2016 7:06 pm
Location: Ladysmith, BC Canada
Motorcycle: 1984 GL1200 Aspencade

Thermostat Stock vs Aftermarket

Postby Breiber » Thu May 12, 2016 7:12 am



I decided while doing the timing belts to change out the thermostat and rad cap while I'm in there. The rad cap springs still feels fine but the cap itself is looking original. I am assuming the thermostat is also OEM (not bad for 32 years old). I picked up a Stanton thermostat. Sadly I'm not impressed with the look of the new thermostat compared to the old, sturdy looking and still functioning original. What are others thoughts on the two? I'm sure the new one will last many miles.

I remember when I used to race stock cars we would cut the guts out of the thermostats so that we were running fully open. We found that you needed some restriction which is why we didn't just remove the thermostat entirely. I'm not sure if there was any science or empirical evidence to support what we did or if we were just young and stupid. I have considered it though for this application. I will never ride this bike in the winter (unless I get caught in a freak storm), I don't rely on engine heat to power a heating system, and I don't intend to jump on the bike and wind on it so a slow warm up cycle really isn't an issue for me. The upside is that with the guts cut out of the thermostat I would never have to look at it again.....it simply cannot fail.

Thoughts,
Brian



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twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
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Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
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Re: Thermostat Stock vs Aftermarket

Postby twocams » Thu May 12, 2016 9:16 am

Not sure what U mean by all the guts out. But other systems on the bike rely on the thermostat working properly. The warmer the engine can run without overheating the more efficient it is. Sounds like a bad :idea: to me. But its your bike.

twocams

Breiber
Posts: 42
Joined: Wed Apr 06, 2016 7:06 pm
Location: Ladysmith, BC Canada
Motorcycle: 1984 GL1200 Aspencade

Re: Thermostat Stock vs Aftermarket

Postby Breiber » Thu May 12, 2016 12:49 pm

Twocams,
By cutting the arms that hold the spring and valve in place you can remove the internals of the thermostat. This leave you with a hollow restrictor plate. Essentially you are running with a wide open thermostat. Yes the bike will run a little cold. It wouldn't be an issue during the warmer months. It could possibly run excessively cold during the winter months. I don't see any practical reason to do it on the Goldwing other than to ensure that you never have to go in there again. To be honest I'm a little tempted to put my 32 year old thermostat back in and see how long it lasts. I'm not impressed with the looks of the Stant compared to the OEM.

Brian

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redbug
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Motorcycle: 1983 Gl1100I
1986 Harley FLHT

Re: Thermostat Stock vs Aftermarket

Postby redbug » Thu May 12, 2016 6:38 pm

Honda thermostat only for me. When or if you do purchase a Honda stat and compare it to your aftermarket stat you will use the aftermarket stat for a trot-line sinker. First the Honda sits deeper and is the correct size in diameter and the flow, you will see the difference. Engines need heat to perform correctly. To me there are no short cuts on cooling systems. Oem on this part and cap too. Your scoot will thank you for it.
" Ridin on Tulsa Time "

Breiber
Posts: 42
Joined: Wed Apr 06, 2016 7:06 pm
Location: Ladysmith, BC Canada
Motorcycle: 1984 GL1200 Aspencade

Re: Thermostat Stock vs Aftermarket

Postby Breiber » Thu May 12, 2016 8:21 pm

Redbug,
I agree with you on the thermostat. As I mentioned before I am sadly disappointed with the Stant thermostat. I don't think that there will be a real noticeable difference in cooling efficiency of one vs the other but the Stant looks cheap and flimsy. I am concerned that it won't stand the test of time like the original. As for the cap I don't think it makes any difference. The 16 pound Stant cap will work just as well as OEM.

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twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: Thermostat Stock vs Aftermarket

Postby twocams » Fri May 13, 2016 3:27 pm

Guess I never have seen a true Honda thermo. I have been using Stant for the past 40 yrs. And Murray sometimes. And just put a Stant thermo/radiator cap on my Wing. The fan comes on at 6-7 bars way before red. Which is what I look for. Maybe cheap looking cause so many things are made overseas now/ not necessarily in Japan. :(

twocams

Breiber
Posts: 42
Joined: Wed Apr 06, 2016 7:06 pm
Location: Ladysmith, BC Canada
Motorcycle: 1984 GL1200 Aspencade

Re: Thermostat Stock vs Aftermarket

Postby Breiber » Fri May 13, 2016 6:15 pm

two cams,
Obviously you haven't run the Stant for 40 years on your Goldwing. How many years have you run one on the 1200? I am sure it will work. Stant is probably the only brand I have ever bought for the many vehicles I have changed thermostats on. I'm not bad mouthing Stant. I just noticed a substantial difference in the quality of the OEM that is in my bike vs the Stant that I bought. I didn't even inquire at my local Honda shop to see what they would charge me because I am positive it is more than double. On top of that they make you feel like you are an inconvenience. My local auto supply store is open 7 days a week and will spend as much time as I need pouring through catalogs looking for creative solutions (and I get a good discount).

I do have the Stant at home now and am not sure if I will put the stock back in or use the brand new Stant. It seems silly not change a thermostat when your in there...they are so cheap. But then there's the old adage if it ain't broke.........

Brian

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twocams
Posts: 554
Joined: Tue Sep 29, 2015 11:25 am
Location: Grants Pass, Oregon
Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: Thermostat Stock vs Aftermarket

Postby twocams » Fri May 13, 2016 7:13 pm

The thing is you want to replace before anything breaks. I change them every time I replace a water pump or a hose on the thermo housing. 30 yrs. no not on anything. And its easier for them to get stuck closed than open.

twocams




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