1970 2.2E, carbs or MFI?

[pope]

Is it possible that a 1970 2.2 E engine has carburetors instead of MFI?

[berettafan]

don't believe so. the 'E' stands for 'einspritz' (sp?) which, IIRC, means injected.

[911s55]

Not originally, just the T through '71

[pope]

Would someone take the MFI out and put carbs though? And if one would, what would be the reason?

[berettafan]

MFI can, reportedly, be very difficult to tune and pumps are quite expensive to service. Apparently many people opted for carbs when their MFI needed service as there are very few qualified people who can work on it.

[Grady Clay]

pope,
Welcome to the Forum
You will find a lot of help here.

berettafan is correct, all 911E had Bosch Mechanical Fuel Injection (MFI) in 1969 through 1973.

It is unfortunately all too common to find the MFI removed and carburetors installed. With the advent of Pelican, the information necessary for maintaining and repairing MFI is now readily available.

I recommend you try and find a 2.2E MFI system and re-install it. It is possible (although expensive) to do that now. In another decade or two, it probably won’t be possible. IMHO not having MFI significantly affects the value of a 911E.

Best,
Grady

[pope]

Sadly, I am one of those people that had their MFI replaced
I just checked. I also noticed that the engine number was for a sportmatic tranny which was thankfully replaced with a 901 at some point. Although I had read up quite a bit on 911's before purchasing, I regret not having studied even more.

I am admittedly in a terrible mood after finding out this sad piece of news *sniff*.

If you say it's of significant value, how much would it cost to get the carbs replaced with a MFI system?

How much different would the engine's performance/efficiency be? The carbs are Webers. Are there various types? Where can I see which ones mine has?

[frogger]

If I remember correctly, MFI should add about 10 HP over the Webers. The money you make selling your Webers will help defray some of the costs of acquiring, reconditioning (if required), installing and setting up your MFI system.

[berettafan]

Check that you have Italian Webers (should be marked 'Tipo' something on the side) and if shafts are tight you have a saleable asset there.

If you are serious about finding suitable MFI kit for your car check the earlyS registry. Someone there will likely have a full setup or something close to it to get you started. Be very careful who you buy from as a pump rebuild is not cheap.

I've only driven two longhoods; mine which is a 2.4 with Webers, and a 2.2S w/ MFI. The 'S' was a very fun car to drive but i wouldn't lose sleep over not having MFI. Webers have a wonderful sound and make for a very clean looking engine compartment.

[zithlord]

Post a WTB: at early911Sregistry. Its quite a few MFIs around.

John

[pope]

What is the best place where I could find a list of all the parts I need?
And what's the best manual (other than increasing my post count here )

[frogger]

The best manual(s) for your car is the factory workshop manuals. Also, you should get a copy of "MFI Check, Measure, Adjust" for MFI tuning. You may find that here:

http://www.scatliff.mb.ca/pelican/MFI_Check_Measure_Adjust.pdf

You will find the Ultimate MFI resources thread useful:

Ultimate MFI resources thread

and the factory parts catalogue may be found here:

https://techinfo.porsche.com/techinfo/pdf/en/catalogues/E_911_73_KATALOG.pdf

[pope]

OMG, I feel I can do anything now

thx!

[frogger]

Originally Posted by pope

OMG, I feel I can do anything now

thx!

That feeling will soon pass.

[berettafan]

Originally Posted by frogger

That feeling will soon pass.

Post of the week! Man that's funny!

[KevinG]

Pope -

Welcome to the world of early car madness - slowly, seductively it will get you until you realize that there really isn't another Porsche out there quite as fulfilling.

Your webers should be nearly as good as the original MFI if tuned properly, so go ahead and drive it and grin.

If you want the MFI, I have a nearly complete 2.2E setup I will sell at core value if you are interested. It was installed on my 2.2S motor when I bought the car, and didn't even notice it for a few months when I was tinkering with the car. I then took the spare S parts that came with the car and had them refurbished so I could make the engine correct.

[Grady Clay]

pope and Kevin,

I insist you guys make a 'deal.'

A few years ago I posted a comprehensive but not absolutely complete list of parts to return an engine to MFI. Pelican rs911t did this conversion (actually he un-did a carb conversion I did in '74 on a 2.8S built to appear 2.0T). I'll be glad to help you identify what you need. In the mean time drive and enjoy.

Best,
Grady

[RWebb]

re Carbs "should be nearly as good as the original MFI "

Grady - I am interested to hear your thoughts on this. I have not driven many MFI cars, but they didn't seem more 'revable' than good carbs. There is also the issue of max hp....

Is there a real advantage or is it just a placebo effect?

Theoretically, you should be able to get a bit better performance with injection - but I'm not sure how much as the MFI is pretty crude in terms of the engine and env'l parameters it assesses.

The diesel tractor based pump also adds a lot of wt. to the very rear...

[JohnKo]

Originally Posted by Grady Clay

pope,
IMHO not having MFI significantly affects the value of a 911E.

God knows I can't speak for Grady, but I think he's talking more about the value of originality, a proper example of the breed, preservation of the arguably quirky technology, etc., etc., more than a performance advantage, per se. I'm glad my '70 E still has MFI, even if I still don't have it fully sorted. It's sort of 'project security' (in the sense that people speak of 'job security')!
Cheers, all.

[pope]

Thanks all for the input.

Originally Posted by frogger

That feeling will soon pass.

lol - Good one


G. Clay, I'm quite sure I'll take you up on your offer to help soon enough

Kevin, I'll PM you for details.