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Vacuum readings

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Old 05-22-09, 10:58 PM
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Vacuum readings
Hey,

I wanted to know how much - vacuum does a healthy engine have?

My engine is always at -15 on the boost gauge
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Old 05-23-09, 06:35 AM
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For stock ports that's normal.
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Old 05-23-09, 07:21 AM
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https://www.rx7club.com/3rd-generation-specific-1993-2002-16/what-your-vacuum-reading-idle-839959/

Variables include: idle speed, ports, hard seals and clearances used, engine temp and of course, engine health. The point being, unless it's way low, don't read too much into it IMO.
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Old 05-23-09, 04:35 PM
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Awesome, thanks.
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Old 05-23-09, 06:53 PM
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stock port, idle 600-700rpm, 16in vacuum
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