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08-16-2009, 09:31 PM
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#1
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Senior Member
Join Date: Jan 2008
Posts: 161
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Radiator Cap
I have coolant coming from my radiator reservoir overflow at about 180 degrees. I've checked the temp at the reservoir with my infrared thermometer and replaced the cap with a new 16psi one. Does anyone know if this is the right psi cap or have any ideas as to why I'm overflowing at such a low temp? Thanks Jim
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HAX
2003 ALPINE 40FDTS
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08-17-2009, 10:03 AM
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#2
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Senior Member
Alpine Owners Club
Join Date: Dec 2001
Location: Las Vegas, NV
Posts: 1,100
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__________________
Dale Gerstel
AMG GTS
Las Vegas, NV
Had: 2007 Limited SE 40fdts
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08-17-2009, 11:37 AM
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#3
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Senior Member
Join Date: Aug 2004
Posts: 341
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Overflow tank
Dale, is the pictured overflow tank a kit or did you make it up yourself? What about the holder?
Thanks.
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David Horn, TX; 2014 40ft Phaeton QTH; 2014 Mazda CX5; 2013 Can-AM Spyder RT-S on TandemTow trailer; Traveling with Ringo (an English Cocker)
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08-17-2009, 11:54 AM
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#4
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Senior Member
Alpine Owners Club
Join Date: Dec 2001
Location: Las Vegas, NV
Posts: 1,100
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Dave,
Bought tank, hose and bracket while staying at camp Walmart, at their auto parts section.
__________________
Dale Gerstel
AMG GTS
Las Vegas, NV
Had: 2007 Limited SE 40fdts
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08-17-2009, 12:44 PM
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#5
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Senior Member
Join Date: Aug 2004
Location: Camarillo, CA
Posts: 466
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I did somewhat the same as Dale and have not had to add coolant since. Being the cheapskate I am and not realizing there are aftermarket overflow systems, I just used a gallon coolant container and drilled a hole in the cap and shoved the overflow hose through the cap to the bottom of the container. Velcroed the container in the compartment.
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Steve
'19 Renegade Verona VSB
'05 Jeep Liberty
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08-17-2009, 12:52 PM
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#6
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Senior Member
Join Date: Jan 2008
Posts: 161
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Dale, Thanks for the info, I'm on my way to camp Walmart now. I must have a tipped sight glass in that I have never seen anything but green in the window. I replaced the surge tank cap in Ennis, Mt just before I drove home to Scottsdale (took 3 or 4 days) I would have thought that if it was overfilled, it should have drained down by now. I backed out of my yard yesterday and as soon as it got up to about 175 to 180 it started to overflow again. How many lbs is your cap? I just bought another cap in case I got a bad cap.
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HAX
2003 ALPINE 40FDTS
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08-17-2009, 01:33 PM
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#7
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Senior Member
Alpine Owners Club
Join Date: Dec 2001
Location: Las Vegas, NV
Posts: 1,100
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Hax,
Mine is 16 lbs vented. Like Mike and Mike in the linked thread, even though my tank looks level, I have found that there can be fluid in the window while the fluid in the tank is lower than the window.
__________________
Dale Gerstel
AMG GTS
Las Vegas, NV
Had: 2007 Limited SE 40fdts
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08-17-2009, 02:38 PM
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#8
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Senior Member
Join Date: Aug 2004
Posts: 341
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overflow tank
Dale & others,
If you have a coolant recovery tank set up, do you then fill the surge tank to the top when cold?
Thanks.
__________________
David Horn, TX; 2014 40ft Phaeton QTH; 2014 Mazda CX5; 2013 Can-AM Spyder RT-S on TandemTow trailer; Traveling with Ringo (an English Cocker)
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08-17-2009, 04:03 PM
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#9
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Senior Member
Alpine Owners Club
Join Date: Jun 2006
Location: Glendale, AZ
Posts: 161
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Quote:
Originally Posted by hax
... replaced the cap with a new 16psi one. Does anyone know if this is the right psi cap ...? Thanks Jim
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I was considering replacing mine as preventative maintenance. It is stamped with 14psi on the top. However, I am NOT finding 14psi in the auto parts stores only 13 & 16 psi as the closest.
So, again, what is the correct cap pressure rating?
__________________
"When you see a shooting star, remember those race drivers taken
from us and are now driving in the Gran Prix of The Heavens"
** Ayrton Senna, May 1, 1994 ** Dale Earnhardt, February 18, 2001
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08-17-2009, 08:30 PM
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#10
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Senior Member
Join Date: May 2004
Location: Auburn, CA, Havasu, AZ & Mulege, BCS
Posts: 5,385
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Mine is 16psi.
The coolant peep site on mine is labeled coolant level cold. If I fill it to have coolant in the window when cold, it will push coolant out so next time cold there is no coolant in the window. However, I have discovered that starting the engine will boost the coolant tank level to show coolant in the window. So that is now my coolant check process- lift rear engine door, start engine & check coolant. No coolant in the window & I need to add some.
On my 06 I used a kitty food container w/hole in lid for an overflow, and never needed to add any; the hot engine pushed some out into the overflow (which I could check when pulling over for a rest), then sucked it back overnight. Haven't gotten to that chore yet on the 08.
__________________
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project
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08-19-2009, 01:51 PM
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#11
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Senior Member
Join Date: Aug 2004
Location: Camarillo, CA
Posts: 466
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My cap is 14 lb. I have never had it tested but since I added the makeshift overlflow (above) I have not had to add coolant. I put coolant in to just cover the view glass when cold.
__________________
Steve
'19 Renegade Verona VSB
'05 Jeep Liberty
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08-19-2009, 05:36 PM
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#12
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Senior Member
Join Date: Aug 2004
Posts: 341
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My cap is 16lbs vented. I replaced the original (same 16 lbs) a year or so ago when I had it tested and it was not at 16lbs.
__________________
David Horn, TX; 2014 40ft Phaeton QTH; 2014 Mazda CX5; 2013 Can-AM Spyder RT-S on TandemTow trailer; Traveling with Ringo (an English Cocker)
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