Ok, I worked out the numbers. Bosch wants fuel pressure to be a constant 2.5 bar or 36 psi greater than manifold pressure. At 06:46 PM 8/1/2001, Mark Ingalls wrote: >Here are the results: >New Regulator-31psi@12" vacuum, Bentley says I should have 28psi. >Old Regulator-32psi@12" vacuum Lessee, 12" vacuum = (29.92" - 12") MAP [Manifold Absolute Pressure] = 17.92" MAP = 8.7 psia [psi absolute, referenced to complete vacuum] MAP. Spec is (36 psia + MAP) = 44.7 psia = 30.2 psig [psi gauge, referenced to atmospheric pressure]. New one is a pound high, old one two pounds high.
>New Regulator-29psi@18"vacuum >Old Regulator-28psi@18"vacuum 18" vacuum = (29.92" - 18") MAP = 11.3" MAP = 5.5 psia MAP. 36 psia + 5.5 psia = 41.5 psia = 27 psig New one is two psi high, old one is one psi high. Sounds like they're both regulating within 38/36 or six per cent high. david
David Beierl - Providence, RI http://pws.prserv.net/synergy/Vanagon/ '84 Westy "Dutiful Passage" '85 GL "Poor Relation" |
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