914-6 carb question |
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914-6 carb question |
carcam |
Sep 5 2008, 11:35 AM
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#1
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Newbie Group: Members Posts: 37 Joined: 22-July 08 From: nc Member No.: 9,334 Region Association: South East States |
Long time Porsche owner new to 914's except a college car (1.7 L) in the late 70's. Just picked up a nice 914-6, complete restoration about 10 years ago and I love it. The engine is basically stock, bumped to 2.2 L with a Solex grind cam, nothing else. On a recent local Porsche club event, the guys behind me couldn't take the strong gas fumes and my clothes do smell like gas after a long run and it sucks down the gas- haven't checked the mileage but it's no Prius. Obviously running too rich or something. I don't want to jump into these Webers myself and the car runs, starts, and idles perfectly. Strong mid range and awesome above 4,000 rpm. The previous owner says it's dialed in and all the old carburated cars are like this and that's why everything now has fuel injection. I don't have any local Weber experts and the techs I've talked too are reluctant to mess with such a good running car. Any advice? Change of clothes, add AC and roll up the windows, switch to fuel injection or turn a couple screws and problem solved. I know this is a very technical forum and something most of you could fix over a beer or two but this is all new to me. Thanks for any advice.
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70Sixter |
Sep 5 2008, 12:13 PM
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#2
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Member Group: Members Posts: 422 Joined: 3-August 04 From: Surf City, NC Member No.: 2,444 Region Association: South East States |
The plastic fuel lines that run thru the tunnel to the engine can crack and leak to the point of risking fire. Get the stainless replacement if your car doesn't already have them.
Also the lines and the fittings at the carbs can leak or seep gas if they are old. Also check the filter in the engine compartment. And spray paint can tops block off the heater at the engine nicely if that is a problem. Too rich mixture results in black soot in tailpipe. Some of us run a bit rich just to avoid too lean burning and associated fried engine. |
Cap'n Krusty |
Sep 5 2008, 12:32 PM
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#3
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
The plastic fuel lines that run thru the tunnel to the engine can crack and leak to the point of risking fire. Get the stainless replacement if your car doesn't already have them. Also the lines and the fittings at the carbs can leak or seep gas if they are old. Also check the filter in the engine compartment. And spray paint can tops block off the heater at the engine nicely if that is a problem. Too rich mixture results in black soot in tailpipe. Some of us run a bit rich just to avoid too lean burning and associated fried engine. Have you ever personally SEEN the fuel lines in the tunnel crack or leak? I've been working on 914s for a living for 35 years, and have NEVER seen this happen. NEVER. Let me qualify that. Never unless someone damaged them, like when welding, cutting, or drilling. FI cars sometimes have heat and stress related (or, more commonly, ham fisted mechanic induced) damage in the area AFTER the tunnel, but never (!) inside the tub. The Cap'n |
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