42lb cobra injectors
10-12-2009, 11:25 PM
#11
5th Gear Member
Join Date: Nov 2007
Location: Maryland
Posts: 4,955
10-12-2009, 11:36 PM
#13
5th Gear Member
Join Date: Aug 2005
Location: Whitehall, Michigan
Posts: 2,638
It depends on the delta pressure. Higher delta pressure means more flow. Ford measured 39 lb/hr at a lower delta pressure than is really active on the car... thus the lower rating.
Run those 42 lb/hr injectors (40 psi delta) at 55 psi delta and they magically become 58 lb/hr injectors (rounding).
Ford rates them at 48.78 lb/hr low slope, and 40.08 lb/hr high slope with a delta pressure of 39.15 psi.
Source document (Injector calibration sheet for the stock 03 cobra injector, feel free to look up that part number: M-9593-M39):
http://www.fordracingparts.com/parts/ics/m-9593-m39.pdf
10-12-2009, 11:51 PM
#14
5th Gear Member
Join Date: Nov 2007
Location: Maryland
Posts: 4,955
If you really want to break it down to that...
It depends on the delta pressure. Higher delta pressure means more flow. Ford measured 39 lb/hr at a lower delta pressure than is really active on the car... thus the lower rating.
Run those 42 lb/hr injectors (40 psi delta) at 55 psi delta and they magically become 58 lb/hr injectors (rounding).
Ford rates them at 48.78 lb/hr low slope, and 40.08 lb/hr high slope with a delta pressure of 39.15 psi.
Source document (Injector calibration sheet for the stock 03 cobra injector, feel free to look up that part number: M-9593-M39):
http://www.fordracingparts.com/parts/ics/m-9593-m39.pdf
It depends on the delta pressure. Higher delta pressure means more flow. Ford measured 39 lb/hr at a lower delta pressure than is really active on the car... thus the lower rating.
Run those 42 lb/hr injectors (40 psi delta) at 55 psi delta and they magically become 58 lb/hr injectors (rounding).
Ford rates them at 48.78 lb/hr low slope, and 40.08 lb/hr high slope with a delta pressure of 39.15 psi.
Source document (Injector calibration sheet for the stock 03 cobra injector, feel free to look up that part number: M-9593-M39):
http://www.fordracingparts.com/parts/ics/m-9593-m39.pdf
hmm....
yeah...
i see..
what you .. yeah i just bought 60#s lol.
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