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Custom EFI-What injectors
What psi and delivery rate injectors for a 2.7? For use with megasquirt probably.
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Donnie Currently Porsche-less..... 
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12-16-2006, 12:12 PM
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Navin Johnson
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,786
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Don't feed the trolls. Don't quote the trolls  http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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12-16-2006, 12:29 PM
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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
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I'm useing 30lb. per hour on my 3.0. I think the 3.2 Carrera OEM injectors are 24 or 26 lb. per hour.
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2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler . |
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12-16-2006, 02:04 PM
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Join Date: Jan 2003
Location: Dublin, CA
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I am using 3.2 injectors set @ 35psi on my twin-plugged 2.8 with TWM throttle bodies and Haltech.
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Sergio The GT Lid Whisperer PCA 42yrs / Ex-RGruppe #197 '19 718 Cayman S (9th Porsche/1st with PDK) '14 Subaru Forester XT (Porsche support vehicle) |
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12-16-2006, 02:21 PM
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Thanks guys, so what affect would boost have on this?
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Donnie Currently Porsche-less.....
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12-16-2006, 05:43 PM
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Join Date: Apr 2003
Location: Terre Haute, IN
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You would need to reference the "boost' pressure (manifold psi) to the fuel regulator. To keep fuel distribution correct it needs to elevate its pressure as the manifold pressure increases. You can do this at a 1:1 ratio using injector pulse width to keep A/F in line. You can also use a Vortech/Protomotive FMU to increase fuel pressure at some ratio to "boost" pressure. The latter often works well if your injectors are marginal in size.
Carrera injectors work well if going OEM Porsche or 951 if you want more head room. The 24psi are very common if your going high impedence Bosch type from the Mustang racers and are inexpensive. If its a Mag case...most seem to think 250hp is reasonable safety....24's should cover you, then.
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Luke S. 72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8,03 900 rwhp 996TT |
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12-16-2006, 07:35 PM
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Quote:
I have a file I can send you that is ballpark for youe set up with 6 psi of boost
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Ben 89 944,85.5 944 914-6 2.4s GT tribute. 914-6werkshop.com |
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12-17-2006, 04:16 AM
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Ben, nope, gonna make one.
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Donnie Currently Porsche-less.....
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12-17-2006, 07:03 AM
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'74 Porsche 911 2.7
