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Registered
Join Date: Dec 2000
Location: Norway / Merritt Island FL
Posts: 220
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Pmo efi
Do anyone have advice on what size PMO EFI throttles I should use on a 3.2ss with twin spark and 964 cams? It will be used on a 1973 street car.
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Sigurd 73.5T 3.2SS EFI X87 944S 3.0 |
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01-20-2015, 11:26 AM
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Puny Bird
Join Date: Nov 2002
Location: Port Hope (near Toronto) On, Canada
Posts: 4,566
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46mm
40's are borderline too small and 50mm is too big. I have 46mm motorcycle ITB's on my 2.6L (really 2550cc), 4 cylinder, type 4 bug engine, so per cylinder that's a bit bigger (637cc vs 533cc per cyl) than your engine. My T4 may be bigger per cylinder, but the 911 head flows better and has higher RPMs.
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'74 Porsche 914, 3.0/6 '72 Porsche 914, 1.7, wife's summer DD '67 Bug, 2600cc T4,'67 Bus, 2.0 T1 Not putting miles on your car is like not having sex with your girlfriend, so she'll be more desirable to her next boyfriend. Last edited by Mark Henry; 01-21-2015 at 10:56 AM.. |
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01-21-2015, 10:43 AM
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Hei Sigurd,
Sent you a PM
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Trond R. 1979 930: Garret GT35r turbo, EFI, carerra intake, Link EMS, custom GT2 cams, 98mm JE P/C, 964 crank (stroker), custom valves & ported (XtremeCylinderHeads) etc..etc.. 1972 914-6 GT replica project 1986 944 Turbo |
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01-21-2015, 02:13 PM
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83 911 Production Cab #10
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46mm fitted:
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Who Will Live... Will See  83 911 Production Cab #10, Slightly Modified: Unslanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats, Going SOK Super Charger |
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01-21-2015, 02:23 PM
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46 is probably a really nice choice, I have something like 48 mm on my standard 3.2. As long as you can open the throttles nice, even and progressive you can get away with pretty big stuff.
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Magnus 911 Silver Targa -77, 3.2 -84 with custom ITBs and EFI. 911T Coupe -69, 3.6, G50, "RSR", track day. 924 -79 Rat Rod EFI/Turbo 375whp@1.85bar. 931 -79 under total restoration. |
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01-22-2015, 02:28 AM
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Porsche 911 Turbo
Porsche 911 Turbo
Das Babe
Das Babe Metalberiech
1977 Porsche 911 Targa 2.7s
