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Damper door adjustment
Posted by: 63turbo ()
Date: June 26, 2020 07:23PM

Okay, I feel embarrassed to ask a question like this, but I did look through the FAQ's first, and really seriously dont know the answer... Is the drivers side damper door supposed to open first, or is it the other way around?

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: Damper door adjustment
Posted by: joelsplace ()
Date: June 26, 2020 07:29PM

I would want them to both open at the same time. If all cylinders are running the same they should all produce the same amount of heat so the doors should open at the same time to keep the temperatures the same side to side. The oil cooler side would be dumping more heat after the oil is up to temperature but since the thermostats are next to the exhaust logs they shouldn't see that.

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...

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Re: Damper door adjustment
Posted by: MattNall ()
Date: June 26, 2020 07:42PM

Drivers door always opens first.... even around town!

Pass. side only opens on the highway and will close by the time you stop and go back to look...unless it's a hot day an steep mtn. grade!

THAT's the way they open!

You adjust COLD and fully shut. NOT TIGHTLY SHUT but shut!

Late Models with the Summer/ Winter PLATE: Drivers side has finger to hold it slightly open!

MODERATOR
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: Damper door adjustment
Posted by: joelsplace ()
Date: June 26, 2020 07:51PM

We need someone with dual temperature gauges to chime in.

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...

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Re: Damper door adjustment
Posted by: 63turbo ()
Date: June 26, 2020 08:26PM

MattNall Wrote:
-------------------------------------------------------
> Drivers door always opens first.... even around town!
>
> Pass. side only opens on the highway and will close by the time you stop and go back to look...unless it's a hot day an steep mtn. grade!
>
> THAT's the way they open!
>
> You adjust COLD and fully shut. NOT TIGHTLY SHUT but shut!
>
> Late Models with the Summer/ Winter PLATE: Drivers side has finger to hold it slightly open!

Thus the question... mine are not doing that, the passenger side is opening first, and I had it in the back of my mind that I had heard "somewhere" that it was the other way around. It makes sense though, the drivers side ought to open more because it needs more airflow because of the oil cooler. I did, or at least tried to adjust my doors to the shop manual a long time ago, but either because I screwed it up or because the bellows just relaxed differently, they are not adjusted quite right. The drivers side does "feel" slightly tighter than the passenger side so I guess I know which one to adjust.

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: Damper door adjustment
Posted by: MattNall ()
Date: June 26, 2020 08:58PM

If the engine warms quickly and doesn't overheat.. it's fine!

I use ONE bellows on the PSS. side to operate both. Here on the Coast I like my heads to run 350-400f..

MODERATOR
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: Damper door adjustment
Posted by: 63turbo ()
Date: June 27, 2020 06:20AM

I'm getting a decent warm-up, at least by water pumper standards (hehe!) and it has been a really long time since my car got as hot as yours, but my cooling system has some "significant mods" smiling smiley

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: Damper door adjustment
Posted by: irfgt ()
Date: June 28, 2020 05:35AM

The thermostats themselves are very inaccurate. They get weak and leak down and then the opening varies. Most are at least 50 years old and the reproductions are not as good as the originals were. Doing my research in designing the new thermostat system I found that on all the test cars I used the left side would usually open first but not by much. Even with the new bi Metallic ones the left side usually opens first but a lot depends on the engine condition and carb adjustments. An infrared thermometer works well to check the operating and opening temperature. If your original bellows is not fully collapsed with extra pressure holding it collapsed it is defective and will open too soon.

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