Ford Sierra/Sapphire/RS500 Cosworth This forum is for discussion of all things pertaining to the Ford Sierra Cosworth.

boost gauge

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Old May 27, 2008 | 07:29 PM
  #1  
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cos400
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Default boost gauge

Where should the boost gauge needle sit when on idle? as mine is sitting on -30psi
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Old May 27, 2008 | 07:48 PM
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vacuum about 10-30 but theres no set valve,long as its creating a vacuum
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Old May 27, 2008 | 09:42 PM
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mine sits at minus; when you drive it it will make boost
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Old May 28, 2008 | 09:04 AM
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If you developed -30psi at idle you would gave a serious problem!!
As a rule around 0.6BAR/8.7PSI.
No way on earth will it ever see -30 PSI.
1 BAR = 14.5038PSI
tabetha
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