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Close the Engine Flaps?
Posted by: irvan ()
Date: October 29, 2017 12:53PM

How do you open and close these flaps? Do they need to be closed for the heat to work?



Edited 1 time(s). Last edit at 10/30/2017 07:58PM by MattNall.

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Re: Close Engine Flaps
Posted by: jjohnsonjo ()
Date: October 29, 2017 01:01PM

They are broke or disconnected. The are two thermostat bellows that open them when over 200 degrees. If the bellows fail they will stay open.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

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Re: Close Engine Flaps
Posted by: 65CrownV8 ()
Date: October 29, 2017 01:03PM

They are supposed to close automatically when the engine is cold. Looks like you have a failed (or missing) thermostat.

George Jones - East Orlando, FL
'65 Monza V8 Convertible - 355/4-spd Posi - TT015
'66 Monza Coupe - 95/PG
'67 Monza Coupe 140/4-spd/Posi, A/C
COrvaiR Society of America (CORSA), Central Florida Corvair Club, Tidewater Corvair Club, V8 Registry

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Re: Close Engine Flaps
Posted by: irvan ()
Date: October 29, 2017 01:35PM

thanks, I guess now I need to figure out the problem.

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Re: Close Engine Flaps
Posted by: veverlove ()
Date: October 29, 2017 02:23PM

If you have a shop manual, you have all you need to zero in on whatever issue may be at hand. In this case, even a novice/inexperienced mechanic-wanna-be can take care of the problem. The bellows in question are neither cheap nor all that dependable in quality. There is an excellent "fix" write-up in the FAX section, where a standard choke coil (used in the right? head to actuate the carb choke rod) is substituted for the bellows. Cheap and more reliable (IMHO) compared to the old set-up, nor is it a difficult procedure. One caveat: not a necessity unless you're looking to use the factory heating system. Good luck and good fun. You'll feel like a real mechanic when you're done and it's an easy weekend project.

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Re: Close Engine Flaps
Posted by: American Mel ()
Date: October 29, 2017 02:24PM

In answer to your second question, . . . . . .
No, they do not have to be closed for the heater to work.
It will just take longer for the engine to get hot.
Still provide MORE than enough heat, providing that your heater hoses are still good, and your fan is not worn-out.

.
-----------------------------------------------
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
'66 Monza Coupe - 4spd, 140 Daily driver beater
'67 Monza Vert. - PG, 140 Daily driver beater



Edited 1 time(s). Last edit at 10/29/2017 02:26PM by American Mel.

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Re: Close Engine Flaps
Posted by: Timothy Shortle ()
Date: October 29, 2017 03:49PM

As Mel points out your heater will still work BUT NOT AS WELL (and it will take longer). But where are you located? Winters in many parts of the world are cold.
I was just in Palm Springs last weekend and it was about 75 when I left there Sunday morning. This morning in SW Colorado it was 39.

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Re: Close Engine Flaps
Posted by: irfgt ()
Date: October 29, 2017 04:54PM

In addition to the heater not heating quickly, the automatic chokes will take longer to open using more gas and causing a high idle. Also there is the possibility of carburetor icing causing stalling.

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Re: Close Engine Flaps
Posted by: irvan ()
Date: October 29, 2017 04:55PM

I'm in Lawrence Kansas, 29 degrees this morning. The good news is it probably won't see a lot of use (probably none) through the winter. Thanks for all the help.

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Re: Close Engine Flaps
Posted by: Vin ()
Date: October 30, 2017 06:26PM

If it is a fair weather driver, they really can stay open. Mine are open all the time and Even on colder fall or spring days my heater produces more heat than I need to stay comfortable and my engine warms up and settles to an idle off the choke quick enough. Nice to have everything working correctly but if you have other more critical things no need to worry about it.

Vin

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Re: Close the Engine Flaps?
Posted by: redone76 ()
Date: October 31, 2017 08:05AM

I took mine completely out. But I'm located in Southern California where currently its a nipply 63 degrees

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Re: Close the Engine Flaps?
Posted by: Spyderman64 ()
Date: October 31, 2017 08:07AM

"nipply" ???

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Re: Close the Engine Flaps?
Posted by: MattNall ()
Date: October 31, 2017 08:15AM

Spyderman64 Wrote:
-------------------------------------------------------
> "nipply" ???

=======================================


You don't have a girlfriend? LOL!!





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Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Close the Engine Flaps?
Posted by: redone76 ()
Date: October 31, 2017 08:26AM

Spyderman64 Wrote:
-------------------------------------------------------
> "nipply" ???


I could post a pic demonstrating "nipply" weather but I like this site and don't want to get banned!

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Re: Close the Engine Flaps?
Posted by: corventure Dave ()
Date: October 31, 2017 02:54PM

I'm also in So Calif. Not nipply here. But extremely nuttly!eye rolling smiley

I have ran without thermostats on my Greenbrier for over 30 years. Yes the climate is quite mild here. But I have also put an all thread rod through the doors. I can adjust the tension on the pivot bushings. This way I can manually open or close the doors if need. Mostly for show, so when parked the doors look functionally closed. However most all the time they are just left open.

Corventure Dave

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Re: Close the Engine Flaps?
Posted by: Noel Felty ()
Date: October 31, 2017 04:10PM

Fix the oil leaks around your pushrod tubes first, then worry about doors and heat working. Running the heat right now regardless of doors open or not will expose you to carbon monoxide. Cheap fix and can do it in the afternoon.

Noel Felty
Brevard, NC
1966 Corsa 140 Before

1966 Corsa After

1972 Ford f100

Corsa SC
NC Mountain Corvairs



Edited 1 time(s). Last edit at 10/31/2017 04:12PM by Noel Felty.

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