MFI or carbs? Options

[bossboy302]

Sorry for re-asking this, but as I begin fiddling with mechanical and electrical components for my project 6 conversion, I am still pondering this decision.

The car, when finished, will be shipped to Europe where my wife and I can use it when we're there, and do some rallies, trips and such. There will likely be (months-long) periods of no use.

Have most of the necessary stuff for the build, (included with the '71E motor-entire MFI, fuel filter/console, complete electrical board, fuel pump, etc) all from 'donor' car...

But I'm beginning to sense that the complexity of MFI (transducers, fuel system, micro-switches, etc.) could prove challenging. A good set of PMO's on the other hand: basic fuel pump and regulator, MSD 6AL, and a spray can of ether may be better suited, again given the intended use.

So, I welcome thoughts and opinions-thanks

[targa72e]

Mfi once set up requires very little attention. If you are building a factory engine spec that used MFI then all the standard settings apply. If you deviate from factory specs with different cams, compression port sizes etc then there is a fair amount of custom tuning required whether you are using MFI or carbs.
On of the other issues with MFI is that 914 has no provision for hot air to the MFI thermostat from hear exchagers. On a 911 there is a hose off the heat exchanger to the thermostat housing on the MFI. With out this provision the car will not run right when warm, if permanently set at hot position the car will not start when cold. There are mechanical cable aftermarket systems to operate the cold start enrichment as a option. So many things to consider (carbs are a pain to tune correctly for many different reasons) on induction system.

john

[ClayPerrine]

On of the other issues with MFI is that 914 has no provision for hot air to the MFI thermostat from hear exchagers. On a 911 there is a hose off the heat exchanger to the thermostat housing on the MFI. With out this provision the car will not run right when warm, if permanently set at hot position the car will not start when cold. There are mechanical cable aftermarket systems to operate the cold start enrichment as a option. So many things to consider (carbs are a pain to tune correctly for many different reasons) on induction system.

Not 100% true. The majority of 914-6 heat exchangers don't have a provision for the MFI heater, However, there were heat exchangers that Porsche had built for the 916 program with the MFI heater connection. Those got put into the spare parts channel when the 916 program was cancelled. I know this is a fact. I have a set of them I used on my 2.4L 911S MFI motor.