temperature and radiator wings

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zipster
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Re: temperature and radiator wings

Post #31 by zipster » Wed Sep 20, 2017 10:23 am

So it looks like it's a fairly straightforward check to see if the thermostat is working. Any way to confirm if the water pump is working properly i.e. pumping water?
-zipster
~Don't skin yer knuckles whatever you do.

1977 GL1000
1986 BMW K100RS flying brick
1975 Yamaha RD350
1978 Vespa P200e
1979 Lambretta Jet200
1986 Honda Helix

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Re: temperature and radiator wings

Post #32 by rcmatt007 » Wed Sep 20, 2017 3:40 pm

water pumps usually never stop pumping, the seals go bad and they start leaking.

I had a thermostat on our 1200 that started to only open half way and I had symptoms like you describe
-Rodger-
The question is not how much time do you have, it is what you do with the time that you have Gandalf
"One of the greatest dignities of humankind is that each successive generation is invested in the welfare of each new generation." Fred Rodgers
"it takes 10,000 hours to become an expert" ancient saying
78 constantly modified/customized since 1978,
76 Ltd "cookies bike" up and running,
79 project, finished,
'86 1200 (Beth's) with motorvation sidecar, (being repainted and apart)
'17 HD Road king and 08 HD Heritage softail (Beth's). I guess you can say we have MBS
http://www.ngwclub.com/forum/viewtopic.php?f=30&t=35846
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Re: temperature and radiator wings

Post #33 by Track T 2411 » Wed Sep 20, 2017 3:49 pm

The water pump is mechanical, and will pretty much keep 'pumping' even after the seals fail. It probably does lose efficiency, though. The easiest check for the water pump is to pop off the lower radiator hose housing, which exposes the front of the pump. The pump would have very little rotational play, and no side-to-side/up and down movement. Generally speaking, when the seal(s) fail on the pump, oil and/or coolant will leak out the weep hole below the water pump, indicating failure.
"He that is good with a hammer tends to think everything is a nail" - Abraham Maslow

"If you can't take the time to do it right the first time, how are you ever going to find the time to do it over?" -Unknown

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Re: temperature and radiator wings

Post #34 by Rednaxs60 » Wed Sep 20, 2017 5:17 pm

Had one of these chrome aftermarket grills on my '85 LTD as well. Measured the chrome centre runs and found that there is a 20% reduction in air flow area because of this. Need all the cooling surface and air flow possible with the 1200 GW rads that are the "high efficiency" rad designed to provide adequate cooling at highway speeds, not so when at slower speeds and in town riding.

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zipster
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Re: temperature and radiator wings

Post #35 by zipster » Sat Sep 23, 2017 12:40 pm

I ran the bike today with the radiator cap off. I see no indication of circulation at all. Ran it until the temp gauge was starting to register. Nothing. Should I see movement, even before the thermostat should open?
-zipster
~Don't skin yer knuckles whatever you do.

1977 GL1000
1986 BMW K100RS flying brick
1975 Yamaha RD350
1978 Vespa P200e
1979 Lambretta Jet200
1986 Honda Helix

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Re: temperature and radiator wings

Post #36 by Easter » Sat Sep 23, 2017 6:42 pm

I don't think you are going to be able to tell anything from that. The drive for the water pump is mechanical so very very unlikely to fail. Seals will fail and possibly the rotor blades might fail but it would be rare indeed. Maybe it is time to pull the radiator and flush the system with a water hose in the inlet (top, no thermostat) and water the driveway. You can also pull the bottom cover (seals with an O ring) and check for both rotation and lateral movement of the water pump blades. Early style were bake-a-light but most have been replaced with metal rotors. If it is the "plastic" type it should be replaced anyway.
Bikes at present:
80 GL1100 Interstate: Now a Cafe Racer called DRAGON WING.
81 GL1100 collecting dust with about 300,000 miles, known as BLACK BEAUTY
2008 (I think) GL1800 Nice bike but as exciting as the family sedan!
76 GL1100 yes, 1100 with 1000 heads and cams, being customized
A fleet of parts bikes awaiting resuscitation or customization or abandonment :IDTS:

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Re: temperature and radiator wings

Post #37 by zipster » Sat Sep 23, 2017 9:00 pm

Thanks Easter,
I pulled the cover and the pump is spinning just fine (metal blades). I either have blockage or it's the thermostat.
Thanks,
Zipster
~Don't skin yer knuckles whatever you do.

1977 GL1000
1986 BMW K100RS flying brick
1975 Yamaha RD350
1978 Vespa P200e
1979 Lambretta Jet200
1986 Honda Helix

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Re: temperature and radiator wings

Post #38 by Easter » Sun Sep 24, 2017 2:43 pm

Run some water from your garden hose into the top hose inlet or into the radiator and let it flow for a while. Should be clear.
Bikes at present:
80 GL1100 Interstate: Now a Cafe Racer called DRAGON WING.
81 GL1100 collecting dust with about 300,000 miles, known as BLACK BEAUTY
2008 (I think) GL1800 Nice bike but as exciting as the family sedan!
76 GL1100 yes, 1100 with 1000 heads and cams, being customized
A fleet of parts bikes awaiting resuscitation or customization or abandonment :IDTS:

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Re: temperature and radiator wings

Post #39 by rcmatt007 » Mon Sep 25, 2017 12:24 pm

sure sounds like a thermostat that is not opening, or all the way
-Rodger-
The question is not how much time do you have, it is what you do with the time that you have Gandalf
"One of the greatest dignities of humankind is that each successive generation is invested in the welfare of each new generation." Fred Rodgers
"it takes 10,000 hours to become an expert" ancient saying
78 constantly modified/customized since 1978,
76 Ltd "cookies bike" up and running,
79 project, finished,
'86 1200 (Beth's) with motorvation sidecar, (being repainted and apart)
'17 HD Road king and 08 HD Heritage softail (Beth's). I guess you can say we have MBS
http://www.ngwclub.com/forum/viewtopic.php?f=30&t=35846
http://s199.photobucket.com/user/rcmatt ... ion?sort=2

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Re: temperature and radiator wings

Post #40 by BikeMaine » Tue Sep 26, 2017 9:21 am

I don't have any wings on my '82 1100. Last summer I took a 2,500 mile trip in 9 days, in the 90's every day, tons of highway driving. Temps stayed fine.
Kevin
1982 GL1100A

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Re: temperature and radiator wings

Post #41 by desertrefugee » Tue Sep 26, 2017 10:07 am

Come to Arizona a ride it for a while... ;)
'97 Valkyrie, '78 GL1000

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Re: temperature and radiator wings

Post #42 by rcmatt007 » Tue Sep 26, 2017 11:26 am

desertrefugee wrote:Come to Arizona a ride it for a while... ;)


but it is a dry heat lolol
-Rodger-
The question is not how much time do you have, it is what you do with the time that you have Gandalf
"One of the greatest dignities of humankind is that each successive generation is invested in the welfare of each new generation." Fred Rodgers
"it takes 10,000 hours to become an expert" ancient saying
78 constantly modified/customized since 1978,
76 Ltd "cookies bike" up and running,
79 project, finished,
'86 1200 (Beth's) with motorvation sidecar, (being repainted and apart)
'17 HD Road king and 08 HD Heritage softail (Beth's). I guess you can say we have MBS
http://www.ngwclub.com/forum/viewtopic.php?f=30&t=35846
http://s199.photobucket.com/user/rcmatt ... ion?sort=2

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zipster
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Re: temperature and radiator wings

Post #43 by zipster » Fri Sep 29, 2017 9:37 am

So, replaced the thermostat. Flushed everything. Verified pump rotation. All back together and still runs hot according to the gauge. Starting to think my 7v regulator may be a bit off. Shot it with an IR gun, and at the oil filter housing I'm seeing 137 degrees F with the gauge at it's midpoint. I'll shoot it again when the gauge is reading hot.
Ideas?
Cheers,
Zipster
~Don't skin yer knuckles whatever you do.

1977 GL1000
1986 BMW K100RS flying brick
1975 Yamaha RD350
1978 Vespa P200e
1979 Lambretta Jet200
1986 Honda Helix

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Re: temperature and radiator wings

Post #44 by Track T 2411 » Fri Sep 29, 2017 9:50 am

If you have an IR tester, check the temp at the radiator hose right at the thermostat housing. That's going to give you the most accurate coolant temp, which is what you want to know. On my 1100 Interstate, I can watch the gauge drop (slowly, sometimes) when the thermostat initially opens, as well as when the fan kicks on. Operating properly, on very hot days, with the fan running constantly, my actual coolant temp, measured right in the coolant at the radiator fill neck, is just under 200 degrees F. The gauge reads just under half, lol!
"He that is good with a hammer tends to think everything is a nail" - Abraham Maslow

"If you can't take the time to do it right the first time, how are you ever going to find the time to do it over?" -Unknown

Josie, the farmer's daughter build
81 gl1100I barn find aka "Josie"
82 gl1100I Parts bike
79 Yamaha 750 Special, my sanity fix (right now!)
New2U Bike? Read Me.

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zipster
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Re: temperature and radiator wings

Post #45 by zipster » Fri Sep 29, 2017 11:05 am

Thanks, Track. So if it's 200F at the thermostat housing, it would indicate a blockage or something else going on? My fan doesn't kick on until the gauge is almost all the way to the right. Not sure where it should be kicking on....
Cheers,
Zipster
~Don't skin yer knuckles whatever you do.

1977 GL1000
1986 BMW K100RS flying brick
1975 Yamaha RD350
1978 Vespa P200e
1979 Lambretta Jet200
1986 Honda Helix


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