TheSamba.com :: View topic - Re-wire jetronic for standalone operation

Thu Apr 07, 2011 8:56 pm

Hi everyone, I pulled the whole d-jetronic system from a porsche 914 1976 model.

Anyways, I got a plug that went into a box and here I assume a couple things. I think this plug is to control the fuel pump via the relay, to give power to the ECM and to control the ignigion coil.

The problem is I don't know which wire does what.

Has anyone reversed engineered this to run standalone from the original design purpose?

If so please send me whatever you might have put together to do this.

Thanks

Joe

Thu Apr 07, 2011 11:33 pm

Probably more than you wanted to know:
http://members.rennlist.com/pbanders/ecu.htm

What do you mean by "Standalone"?

Fri Apr 08, 2011 12:27 am

dark7622 wrote: Hi everyone, I pulled the whole d-jetronic system from a porsche 914 1976 model.

Joe

The 914 '76 (US-model) had L-jet as far as I know, right?

/Lars S

Fri Apr 08, 2011 3:50 pm

I may be mistaken, but I think all '76's were 2 litre, and in that case all 2 litre cars were D-jet. Yes/no?

chrismo

Fri Apr 08, 2011 4:17 pm

Chris Walden wrote: I may be mistaken, but I think all '76's were 2 litre, and in that case all 2 litre cars were D-jet. Yes/no?
Yes, all '76s were 2.0L. Don't know about the D-jet part as my 914 stuff is packed away.

Fri Apr 08, 2011 4:53 pm

oasis wrote: Chris Walden wrote: I may be mistaken, but I think all '76's were 2 litre, and in that case all 2 litre cars were D-jet. Yes/no?
Yes, all '76s were 2.0L. Don't know about the D-jet part as my 914 stuff is packed away.

Wiki suggests the 2.0L engines were all L-Jet. I have no knowledge myself.

Fri Apr 08, 2011 5:17 pm

As far as I know there were no L-jet injected 2.0's. Ray

Fri Apr 08, 2011 5:43 pm

raygreenwood wrote: As far as I know there were no L-jet injected 2.0's. Ray

Perhaps I read between the lines too far. Here is what is claimed:

"Slow sales and rising costs prompted Porsche to discontinue the 914/6 variant in 1972 after producing 3,351 of them; its place in the lineup was filled by a variant powered by a new 95 hp (71 kW) 2.0 L, fuel-injected version of Volkswagen's Type 4 engine in 1973. For 1974, the 1.7 L engine was replaced by a 76 hp (57 kW) 1.8 L, and the new Bosch L-Jetronic fuel injection system was added to American units to help with emissions control. 914 production ended in 1976"

So what was used on the 2.0L engines, still D-jet?

Fri Apr 08, 2011 9:28 pm

Ray is right, the L-jet was only for the 1.8.

Pls see http://www.pelicanparts.com/914/How_to_buy_a_914.htm

/Lars S