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john beirne
Joined: 02 Oct 2006
Posts: 24
Location: Ireland
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 Posted: Sun Aug 26, 2007 2:22 pm Post subject: Kitfox/582 coolant bleeding |
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I changed the coolant hoses that run to the cabin heater on my 582 engined fox and then refilled the system with coolant and bled the system at the vent on top of the thermostat until the coolant ran through, however now the engine overheats!
Both rads get hot evenly over all their surfaces so I don’t think any air is trapped inside those
I even placed the tail wheel on a barrel to ensure the cylinder head was level and prevent air entrapment inside the head while filling and bleeding
What am I missing?
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malpass-architect(at)comc
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| Posted: Mon Aug 27, 2007 4:50 am Post subject: Kitfox/582 coolant bleeding |
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What are your cht numbers at a specific rpm range?
Bill
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Guy Buchanan
Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA
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| Posted: Mon Aug 27, 2007 7:54 am Post subject: Kitfox/582 coolant bleeding |
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At 03:22 PM 8/26/2007, you wrote:
| Quote: | I even placed the tail wheel on a barrel to ensure the cylinder head
was level and prevent air entrapment inside the head while filling and bleeding
What am I missing?
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Make sure there are no bubbles in the head. (Tilt, shake, bleed, run,
repeat.) Make sure you bleed the pump housing, if you can. (Mine has
ports top and bottom.) Make sure you're running 50/50 coolant /
distilled water. Finally, were your old hoses so bad that they might
have left chunks in the system?
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
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_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too. |
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wheetfly(at)yahoo.com
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| Posted: Mon Aug 27, 2007 8:34 am Post subject: Kitfox/582 coolant bleeding |
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When I had my KF III 582 gray head I had to run 70%
water to bring my temps 180deg. U mite try that 50% in
winter
do not archive
Bill in maine
--- Guy Buchanan <bnn(at)nethere.com> wrote:
| Quote: |
<bnn(at)nethere.com>
At 03:22 PM 8/26/2007, you wrote:
>I even placed the tail wheel on a barrel to ensure
the cylinder head
>was level and prevent air entrapment inside the
head while filling and bleeding
>What am I missing?
Make sure there are no bubbles in the head. (Tilt,
shake, bleed, run,
repeat.) Make sure you bleed the pump housing, if
you can. (Mine has
ports top and bottom.) Make sure you're running
50/50 coolant /
distilled water. Finally, were your old hoses so bad
that they might
have left chunks in the system?
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly
to Bob Ducar.
browse
Subscriptions page,
FAQ,
http://www.matronics.com/Navigator?Kitfox-List
Web Forums!
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Bill Wheet
Buxton, Me.
FsII 503
Yahoo! oneSearch: Finally, mobile search
that gives answers, not web links.
http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Mon Aug 27, 2007 9:24 am Post subject: Kitfox/582 coolant bleeding |
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I usually fill the coolant, start the engine and run it for about a minute, shut it down and check the coolant level. A minute should get all the bubbles out of the system. Make sure you have the breaker hose from the top of a cylinder head looped back to the fluid filler. That will remove any bubbles in the heads.
Noel
[quote]
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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john beirne
Joined: 02 Oct 2006
Posts: 24
Location: Ireland
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| Posted: Mon Aug 27, 2007 2:09 pm Post subject: Re: Kitfox/582 coolant bleeding |
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Thanks guys
The hoses removed were not in poor condition really, they were chaffed where they had been tie wrapped to the engine bearers loosely so “ a stitch in time”
The coolant is a 10:1 distilled water and coolant (I live in a moderate climate)
The engine never exceeded 75-80C even on a hot day, now it keeps climbing before I shut it down before it reaches 100C
I have run the engine a number of times hoping it displaces the obviously trapped air and yet the problem continues.
With the breaker hose removed from the head the coolant gushes merrily while filling, I've run about a quart over board so far
The large hose from the pump to the thermostat feels soft as if there may be air within
Working on it tomorrow so will keep you posted
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malpass
Joined: 27 Aug 2007
Posts: 39
Location: Marietta, Georgia
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| Posted: Tue Aug 28, 2007 9:14 am Post subject: Kitfox/582 coolant bleeding |
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Bill, what is the highest cht temp you are running on a super hot day, with
high density altitude?
Reason I am asking because I have been running 192 (worst condition) on a 4
minute climbout at 6500 rpm. It then will come down to about 178 at cruise
at 5200. I dont like the 192 degrees as the 582 grey head limits are suppose
to be 180 max. I havent tried reducing the antifreeze but I have heard it
helps cool the engine. I also have double radiators in tandem under the
belly. Also have you heard anything about the orange stuff (for the
greyhead) running any hotter than the green?
Bill Malpass
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kitfox III w/ 582 greyhead |
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john beirne
Joined: 02 Oct 2006
Posts: 24
Location: Ireland
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| Posted: Tue Aug 28, 2007 1:03 pm Post subject: Re: Kitfox/582 coolant bleeding |
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I sorted the problem this evening by a combination of pipe massage and bleeding from the vent pipe held aloft and then plugging it with thumb before reconnecting quickly before it could draw in air all the while topping up the system- a four handed job- temps now 80 on the ground and sustained climb, 75 in the cruise- back to normal
Thanks for all the advise.
John
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