MFI information wanted
 

Hi,

I am rebuilding a 1973 911E, and would like to gather information regarding MFI pump.

Would like to know how to calibrate and set up.

Reason for rebuild is basically oil leak, but nice to look over other stuff as well.
I have rebuild several 911 engines, but my first MFI system.

All kind of information and links would be appreciated.

Thanks
Trond

http://forums.pelicanparts.com/porsche-911-technical-forum/269190-ultimate-mfi-resources-thread.html#post2441556

http://forums.pelicanparts.com/porsche-911-technical-forum/96551-mfi-check-measure-adjust-click-high-resolution.html

Trond.........here is a good place to start.

regards,
Al

Like Al suggested; Ultimate-MFI-Resources & MFI Check-Measure-Adjust. Sounds like you want to dig into the MFI pump, so I would suggest getting the DIY step-by-step guide written by Michael J. Burgess. His web site is: WELCOME - The Home of the DIY Step-by-Step Porsche 911 Guide. All the information you need to rebuild your MFI pump.

MFI magic
 

Trond,
Mark Jung...posted above...is the go to guy for MFI knowledge, rebuilds and tuning. When i was rebuilding my 71E, I took my pump apart to learn, refurb, etc............I was amazed by how the pump was actually like another little 6 cylinder engine......incredible design. (check out the pic below) I did my best and then I sent it to Mark to ensure that it was done right. Mark basically took it all apart, replaced all the gaskets, refurbed, dyno tuned etc and sent it back to me as new...............I bolted it in and fired it up.

MFI is a great learning experience, made even better knowing that there are experts to back your play.

http://forums.pelicanparts.com/uploa...1418278462.jpg

That's a great picture...just need the Lego style instructions to go with it as I start to experiment with MFI. ;)

Al and Mark, thank you for your information.

Amazing how many parts that is inside the pump.

Great photo of all the parts of a late MFI pump. One part missing. Al knows. Anyone else?

part missing...
 

Uhmmm...a washer? Wait this is too easy :rolleyes:

Without this part it will not run!

Now I'm curious...

I'll take a wild guess. I don't see anything that looks like a cylinder head with injector line fittings on it.

Belt?

Not the belt or injector lines/injectors. Just look closer at all the parts shown.

I have it...
 

OIL
Ha! and you thought you could trick us :p

No, not oil.

Drive pulley

Drive pulley is in the photo.

I think the space cam is there so how about the stylus?

But I also want to say the rear seal, even though the pump would still run, but just messy.

Good eye! I didn't catch the missing seal, but no that's not it. Stylus is there on the lever in the photo.

There should be two banjo fittings, one for oil and one for gas.

The banjo oil fitting is part of the oil line connected to the engine case. The oil inlet fitting for the MFI pump is in the photo. But your really close!!!

Well then it's the other banjo fitting for either the fuel inlet or return side (I say inlet since it's not on the left side of the picture)...my eyes are starting to hurt and I'm getting no work done:p

Your correct Marlon. Return fuel banjo missing........
Your prize is a new L-17 bearing for the MFI pump. The one that goes on the flyweight end of the camshaft. Give me your mailing address.

Really...awesome...I was going to joke about getting a complementary pump overhaul, but that's cool. ( 1...another example of spectacular people on this forum 2...it pays to not work at your real work)

Seriously, I'm just starting to fool around with MFI. My 73 2.4 MFI is awesome (never have done anything to it) so I've mothballed it and I'm now at the induction stage of a 3.0L MFI, "home built-figure out what I'm getting into engine", just been too shy to post a thread. I have actually given you a call recently to pick your brains.

This will be great for the other pump I have.

Again thanks so much, will PM.

existing 2.4

http://forums.pelicanparts.com/uploa...1418683950.jpg

current 3.0

http://forums.pelicanparts.com/uploa...1418684237.jpg

starting to play

http://forums.pelicanparts.com/uploa...1418684326.jpg

Mark, you are awesome!
Vr,
Scott

Hey, I think I at least earned the L-17 roller set, right?
http://forums.pelicanparts.com/uploa...1418914564.jpg

Two banjo's for fuel. Oil banjo is not part of the MFI pump. You were close.