MFI on 2.0E

[thor]

Hello ,

I' m a new member .
I own a 2.0 E 1969 but the Mechnical fuel injection is replaced by a a pair of weber carburetors. Actually I would like to mount an MFI as it was before.. A friend has a pump of 2.0 S standard and it is complete ...Then my question is : can i use this pump (001 i think) on my 2.0 E without big modifications like camshafts or pistons ....or must I modify something on my engine to be compliant with this pump (may be the fuel rate is to higher for my engine ) ? thanks you to help me ....

[Rot 911]

You won't have to change out anything on the engine, but you will have to change out the cam in the pump. However, you will need much more than the pump to run the MFI on your car. You will need the hard lines, the injectors, the belt for the pump, hot air hose to the thermostat.

[thor]

I can have all the complete S M.F. I (hose, pipes etc ..) but If I don't want to change the cam inside the pump ? ??

[oliver07r]

Pas evident Thor,meme ici c'est difficile d'obtenir une reponse concrete a ta question.patience,ça va venir!!!

[thor]

I hope so ....I hope so

[304065]

The left camshaft drives the MFI pump. When your car was converted to carburetors, if the left cam was changed, it will have to be changed back.

If you don't change the space cam you will get too much fuel. The MFI system is difficult enough to tune properly when the cam matcheds the engine's fuel requirements. And an "S" pump is more valuable than an "E" pump, sell it and buy the correct one for your engine.

I don't read French.

[tref]

the cam in the MFI pump and the can in the engine must match,
the means your 2.0E engine must have an 2.0E MFI pump.

J'ai un systeme MFI pour 2.0E (pompe, injecteur, fluttes,....),
veux tu faire un echange pour ton systeme 2.0S ?

Francois

[thor]

is tere so much differences between the 2 pump ?

[tref]

Salut,

the main difference between the pumps is the space cam, it's the equivalent to the PROM chip in an electric fuel injection system.
The other difference between 2.0E and 2.0S MFI systems is the
diameter of the intake tubes (throttle body and stack), the S is
bigger!

Francois

[jluetjen]

I think that your choices are as follows:

1) Sell the desireable S pump and replace it with an E pump.

2) Use the S pump as is. You'll need to adjust the mixture a little, but I've been told that that the two cam designs are close enough that it will work. It may run a little rich or lean at some point(s) in the rev range, but you'll only know for sure after you try it.

3) Replace your pistons with High-CR 9.5+:1 pistons from JE since the original 2.0S pistons are apparently very scarce nowadays. Get a set of cams ground to "S" spec (or have yours reground) and you'll have an engine that feels pretty much like a 2.0S except it will be a little weaker then a real S at peak rev's, say above 7000 RPM. Below that engine speed... Whoo Hooo!

If you are going to chose option 1, I'd recommend trying out option 2 first and see how the car runs. If you like it, keep it and you have the option of upgrading to option 3 in the future. If you don't like it, you can take the pump off and sell/exchange it for an E pump.

Good choice reverting back to MFI. In spite of the daughnting reputation, it really isn't that bad. Be sure to download and read the MFI documentation that Pelican has posted. A link is on a related thread below. I doubt that you'll regret your decision.

[thor]

thanks a lot for your answer ,

you applied on your car the option 3 ? it seems to be very interesting ...!!!! I think i will try at less the option 2 ...

[jluetjen]

Thor;
I believe that your question was to me. Actually my car has 9.9:1 S pistons, but I'm still using E cams. I love it since I can just idle around town at 50kph and still pull cleanly to 7000 RPM. I suspect that with S cams in a 2.0, it will be very difficult to drive on local roads without attracting the attention of the police.

[thor]

Well , jluetjen it seems to be a very good modification
this is the modification I saw in the wayne's book and performance handbood i think ...
Do you know approximately the power of your engine ? and with S cams and E valves I think it will be better but may be less than a S but probably again better in low revs ?

[jluetjen]

Thor;
Unfortunately our Boston Area Dyno day didn't happen, so it hasn't been dyno'd yet. I'm not expecting it to be world-shaking HP. Most likly a little more then stock (say 145?) but when combined with an MSD ignition system it runs smoothly down to 2000 RPM and pulls cleanly from there through the redline. I'm guessing the torque curve is similar to a stock E's, but it run's stronger when "off cam".

I suspect that if you switch to S cams, you won't be able to idle around at 2000 RPM as cleanly as mine does. Undoubtably the same engine with S cams will pull stronger then mine from 4000 RPM through 7000 RPM, but the reality is that most places in New England I can't run above 4000 RPM for very long before I'm going WAY too fast.

Basically, I consider my engine an E+, but still not an S by any stretch. In a 2.0 it's more then fast enough to be fast on the street without it being so fast that I get frustrated at not being able to use the performance. I'm one of those who believes that HP does not equal happiness. One of the most fun cars I've ever driven was a Fiat 500 -- in Germany of all places. Why? Because I had to drive like Mario Andretti all the time, just to keep up with traffic. My 2.0E is the same way, fast enough to be fun, but not so fast that I can't use it's performance.

[thor]

thanks a lot jluetjen !!!! I'll keep inform with my modifications

[Wayne 962]

Hmm, I would think it would work okay. Not ideal, but you would probably be very close. Changing out the cam in the pump isn't that much of a deal...

-Wayne

[thor]

Thanks a lot for your answers , that's great and I will probably trying to have piston for 2.0 S and S camshaft in the future then it will work better !! !
Wayne I bought your book(how to rebuild...) two weeks ago and congratulations !!
unfortunately it 's in english