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A.c. vacuum problem

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Old Feb 26, 2018 | 09:10 PM
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Default A.c. vacuum problem

So I just twin turbo my 99 frc and it took out the vacuum container under the battery. Well I was wondering since i don't have the cam anymore can I get a small vacuum pump and hook it up and make my a.c. controls work?
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Old Feb 26, 2018 | 09:32 PM
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It might work -- but the lack of volume will be problematic. That said, you can find a small 12V vacuum pump to hide in the trunk at Amazon:
Amazon Amazon
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Old Feb 27, 2018 | 07:46 PM
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Do you know how loud that pump is?
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Old Feb 27, 2018 | 10:30 PM
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No, haven't tried one. Doubt I would want it inside the cabin though. Perhaps alongside the fuel pump on the frame or similar. I'd say a vacuum tank would also be necessary. There are others with turbos -- how do they deal with it? The turbo only eliminates manifold vacuum when at higher RPM? If so, why not plumb directly from the manifold to the A/C control? Might only work at some throttle levels, but less trouble perhaps?
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