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> Aux air regulator prototype
emerygt350
post Oct 17 2025, 09:16 AM
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Well, it works on my desk and it works on 12v. Might get around to trying it in the car today.

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Literati914
post Oct 24 2025, 12:06 PM
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While trying to decide if I want to keep d-jet for my Volvo 1800E engine build - I was reading up on the components and came across the following, which reminded me of this thread and your endevor for a solution. This wouldn't work in the 914 I suppose, but it's interesting.

"...Aux Air Valve Alternative:

For those that value function over a stock engine compartment, or wish to keep a working fast-idle which does not require arranging for a mortgage to buy a replacement valve, here is a good working manual replacement using a Heater Control Valve [Yes, you read right! There is nothing that says this valve can't control the flow of air instead of Coolant!]
..here is a modestly priced generic Heater Control Valve, mounted in the general original location and manually controlled from the dashboard with a Bowden Cable...a brilliantly simple solution! .."
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emerygt350
post Nov 6 2025, 03:06 PM
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QUOTE(Literati914 @ Oct 24 2025, 12:06 PM) *

While trying to decide if I want to keep d-jet for my Volvo 1800E engine build - I was reading up on the components and came across the following, which reminded me of this thread and your endevor for a solution. This wouldn't work in the 914 I suppose, but it's interesting.

"...Aux Air Valve Alternative:

For those that value function over a stock engine compartment, or wish to keep a working fast-idle which does not require arranging for a mortgage to buy a replacement valve, here is a good working manual replacement using a Heater Control Valve [Yes, you read right! There is nothing that says this valve can't control the flow of air instead of Coolant!]
..here is a modestly priced generic Heater Control Valve, mounted in the general original location and manually controlled from the dashboard with a Bowden Cable...a brilliantly simple solution! .."


I might be headed that way. I have everything setup now and on the car, using a toyota purge valve now instead of the water valve.

Works great, but I just don't think it is worth it. I just feel like a manual lever would be exactly what I want on a car like this. I can also put it inline with the existing setup and just close it when I find the AAR is being annoying.
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emerygt350   Aux air regulator prototype   Oct 17 2025, 09:16 AM
Superhawk996   :popcorn: Have considered the same approach. ...   Oct 17 2025, 09:37 AM
Literati914   It'd be great if you guy could figure this stu...   Oct 17 2025, 09:53 AM
FlacaProductions   Very cool!   Oct 17 2025, 11:19 AM
JamesJ   Well, it works on my desk and it works on 12v. ...   Oct 17 2025, 12:37 PM
tomeric914   https://xwebforums.com/forum/index.php?thre...erna...   Oct 17 2025, 01:05 PM
emerygt350   That looks a little like what I am up to but minus...   Oct 17 2025, 02:38 PM
tomeric914   This is probably just a prototype, but I suggest y...   Oct 23 2025, 07:02 PM
emerygt350   This is probably just a prototype, but I suggest ...   Oct 24 2025, 04:40 AM
emerygt350   Progress   Oct 18 2025, 03:22 PM
emerygt350   More progress. Ready for a test run.   Oct 23 2025, 07:28 AM
emerygt350   Here are my routines so far. Anybody think of any...   Oct 23 2025, 07:33 AM
emerygt350   dupe   Oct 23 2025, 07:34 AM
Superhawk996   So it looks like Arduino is just controlling via h...   Oct 23 2025, 09:06 AM
emerygt350   So it looks like Arduino is just controlling via ...   Oct 23 2025, 10:58 AM
Ishley   Do you need a default routine that the code falls ...   Oct 23 2025, 10:51 AM
emerygt350   Do you need a default routine that the code falls...   Oct 23 2025, 10:59 AM
Superhawk996   There is an initial 4 sec open routine regardles...   Oct 23 2025, 11:35 AM
emerygt350   There is an initial 4 sec open routine regardle...   Oct 23 2025, 11:47 AM
rjames   Very cool and imporessive work! When you fir...   Oct 23 2025, 04:46 PM
emerygt350   Very cool and imporessive work! When you fi...   Oct 23 2025, 06:01 PM
VaccaRabite   My old MS2 2056 had an ICV based on temps. It use...   Oct 24 2025, 05:55 AM
emerygt350   My old MS2 2056 had an ICV based on temps. It us...   Oct 24 2025, 09:28 AM
Literati914   While trying to decide if I want to keep d-jet for...   Oct 24 2025, 12:06 PM
emerygt350   While trying to decide if I want to keep d-jet fo...   Nov 6 2025, 03:06 PM


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