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Replace 2.2 with 2.4
I bought a good used 2.4 with MFI so use as a core for a RS buildup, but I won't be getting to that until this winter. In the meantime the 2.2 in my car is smoking worse and worse so I'm thinking that I will pull it out and replace the MFI on the 2.4 with the Webers from the 2.2 and use it until I am ready to start my rebuild. Anything I need to know (other than to plug the MFI ports) to do this?
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Robert Currently Porsche less (but the wife has 2) |
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07-08-2006, 06:35 AM
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Location: WA
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changes to carb venturi and jets. You can use the FI holes to get vacume for your brakes, if your car has assisted brakes.
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I like them I drive them |
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07-08-2006, 02:25 PM
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Home of the Whopper
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Why not use the MFI?
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1968 912 coupe 1971 911E Targa rustbucket 1972 914 1.7 1987 924S |
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07-08-2006, 02:30 PM
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Location: Greater Metropolitan Nimrod, Oregun
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wrong space cam
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off |
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07-08-2006, 02:33 PM
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Actually I want to use the webers as this is going into a 68 and I have not collected all the electrical stuff I need to put a MFI engine into it. Also that means I can send the MFI pump/throttle bodies out to be rebuilt to RS spec's and keep driving the car.
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Robert Currently Porsche less (but the wife has 2) |
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07-08-2006, 02:41 PM
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Location: Seattle, WA
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Let's see:
* Plug the MFI holes - PMO has a nice little kit for this * Switch the fuel pump * You will probably lose hp using the webers. I performed this conversion a while back on a 68 as a matter of fact, I never could get the carbs just right but that was probably due to lack of tuning experience on my part. But it ran ok for the most part. * Depending on the trans you have (901 vs 915), you may need to use the flywheel from the 2.2. Good time to replace the seals if that is the case. I think that is about it. You should be able to find both wiring diagrams here somewhere. Hope this helps. -Alan _________________ 206aa 1979 911 SC Coupe _________________ |
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07-08-2006, 02:50 PM
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Location: Seattle, WA
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Quote:
The car probably doesn't have the 2nd port of the gas tank for the MFI return fuel line. This was the reason I decided to punt on putting MFI in my 68. In retrospect, I wish I would have run the fuel line and setup the MFI. |
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07-08-2006, 02:54 PM
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Second Fuel line will have to be added before I can put the MFI in, as for the Fuel pump, what I have in the car right now is a 2.2 Carbed motor, so I have a fuel pump that works fine with carbs.
I'm still not convinced I will be doing MFI for the new motor, but once I have costs for a MFI rebuild vs EFI I'll make a decision.
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Robert Currently Porsche less (but the wife has 2) |
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07-08-2006, 03:54 PM
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1968 Porsche 911T
1986 Porsche Carrera
Olive
The Turtle
Ruby
Brownie
