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Registered User
Join Date: Jun 2011
Location: France
Posts: 52
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964 3.8 question
Hi all, i have already an 3.8 engine with 6 gearbox/lsd on my 64
309cv on the dyno, but i want more older look... so i want to done a carb conversion, could you help me on what part i need to done on my engine...? thanks ++ Olivier 
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03-23-2018, 09:00 AM
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Registered
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,480
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I would consider checking with PMO carburetor in California
You tell him what you have and he will tell you what you need, he has it all for carbs. Bruce |
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03-23-2018, 09:31 AM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,125
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Please, please, do not put carbs on there.
 Go with individual throttlebodies and aftermarket electronic fuel injection. Search here for the Rasant EFI kit. |
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03-23-2018, 10:15 AM
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Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
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Quote:
__________________
Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage |
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03-23-2018, 10:40 AM
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Registered User
Join Date: Jun 2011
Location: France
Posts: 52
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Quote:
no CV like HP ... 
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03-23-2018, 12:08 PM
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Registered
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Quote:
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03-23-2018, 12:19 PM
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Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
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Quote:
Still, we would like to see a picture of your car.
__________________
Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage |
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03-23-2018, 04:09 PM
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Registered User
Join Date: Jun 2011
Location: France
Posts: 52
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easy
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03-24-2018, 12:39 AM
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gduke2010
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Good looking car. Yellow is one of my favorite Porsche colors, like the Yellowbird.
+1 for the individual throttle bodies. Couldn’t you have the throttle body from the original 3.6 bored? Also, I live in the mountains and older cars with carbs load up with fuel. They can be a real pain. |
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03-25-2018, 08:10 PM
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Registered
Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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I don't think individual throttle bodies plus basically the same manifolds you'd use with carbs are all that expensive. Most of them use carb-like manifolds, so only the center cylinders have the butterfly directly above the port, but that isn't necessarily very bad - Porsche kept that configuration on the mechanical injection motors though I didn't understand why, since unlike the carburetors they weren't borrowing the design and parts for some other car.
As a guess, I'd think they'd cost maybe roughly the same as carbs and manifolds? Of course you'd need to pay for the electronic fuel injection, and while you were at it you'd want to include a crank fire type spark system and ditch the distributor. Now you can tune your spark and fuel maps yourself. |
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03-26-2018, 10:13 PM
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Racer
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ITBs are fun.
__________________
Preston Brown Street: 2009 911 Carrera S Coupe | 2015 Cayenne S | 1995 Audi ÜrS6 (unicorn) 1965 356 C Coupe | 2010 F250 (support vehicle) Race: 1994 964 GT2/1 | Various 944s | 2016 Superlite SLC | 2007 997 Carrera |
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04-02-2018, 11:41 AM
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Registered
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04-02-2018, 03:57 PM
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My Garage
1971 Porsche 911
Baja Bug
1985 Porsche 911
2011 BMW 550i
