MFI port to EFI port adapters

[mb911]

Does anyone have those fittings anymore? I want to use my carbs as throttle bodies and the ports for the injectors. @jpnovak use to have something. I am ready to start the EFI process.

[Uwon]

Following….

[jpnovak]

Ben, You have a PM.

[mb911]

Thanks. Looking forward to getting this converted

[Quickstep192]

I’m intrigued by this. Can I use my Webers as EFI Throttle bodies? That would be HUGE!

[jpnovak]

yes. it can be done. My adapters only work on heads that have MFI injector bungs.

Webers can be disconnected from the fuel source and they become a throttle body.

Personally, I would sell the webers, buy some MFI stacks and TBs and be ahead on budget to pay for the rest of the EFI.

[mb911]

Originally Posted by jpnovak

yes. it can be done. My adapters only work on heads that have MFI injector bungs.

Webers can be disconnected from the fuel source and they become a throttle body.

Personally, I would sell the webers, buy some MFI stacks and TBs and be ahead on budget to pay for the rest of the EFI.

I am not sure you can get a nice set of stacks and TBs for what I could get for the carbs. Plus I want retain the steel air cleaner in my application. Your solution will be perfect for me.

[Quickstep192]

Originally Posted by jpnovak

yes. it can be done. My adapters only work on heads that have MFI injector bungs.

Webers can be disconnected from the fuel source and they become a throttle body.

Personally, I would sell the webers, buy some MFI stacks and TBs and be ahead on budget to pay for the rest of the EFI.

I have ports in the heads as the car was originally MFI. Unfortunately the original MFI TBs are trashed. Any recommendations for TBs?

[911hutch]

What about using Zeniths... relatively cheap

[RobFrost]

Triumph triple throttle bodies. Dead cheap and perfect size.

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[H-viken]

https://forums.pelicanparts.com/porsche-911-used-parts-sale-wanted/1129209-f-s-zenith-weber-carburetor-bodys.html

[mb911]

Originally Posted by H-viken

https://forums.pelicanparts.com/porsche-911-used-parts-sale-wanted/1129209-f-s-zenith-weber-carburetor-bodys.html

Good value no doubt but remember throttle shafts are the issue with any used carb setup. I had mine redone a year ago for 1600 I believe.

[phunt]

hi these are 1986 3.2 heads so I guess CSI. will your adapters work on these heads. thanks

[jpnovak]

Sorry. They will not work with anything but a 69-73 MFI head. Well excpet the later MFI heads in a 74-76 Carrera and maybe a few race cars.

If you are having the heads reconditioned you can weld up the injector "bump" in the heads and drill/tap for the adapters. The bigger challenge with the 3.2 heads is finding the 69-71 mag MFI stacks that can be bored large enough to match those port sizes. Possible. Yes. Probable. Slim.

[MrBonus]

Originally Posted by jpnovak

yes. it can be done. My adapters only work on heads that have MFI injector bungs.

Webers can be disconnected from the fuel source and they become a throttle body.

Personally, I would sell the webers, buy some MFI stacks and TBs and be ahead on budget to pay for the rest of the EFI.

This is what I’m doing. Webers are leaking. Going to yank them, have them rebuilt, then sell them.