Injector Size for SDS?, Need help on injectors Options

[Joe Owensby]

Planning to put a SDS on a 2 liter engine. I intend to use a 2 liter manifold, fuel rail, etc. which I have. I want to put in new injectors as I install this. In browsing around, it looks as if the 2 liter injectors are becomming obsolete or unavailable soon. The 1.8 Ljet injectors seem to be the most commonly used ones on Porsches and other cars. For example, Advance auto has these for $46.00 new, made by Niehoff. Is anyone familiar with Niehoff injectors, and are they good quality?

It seems as if the time to upgrade for long term parts availability is now, as the new control system will be tuned in to the injector size. Is this a good choice? Will the 1.8 Ljet injectors fit the '73 fuel rails and manifold tubes? Are the connectors on these the same as the Ljet connectors being offered with the new aftermarket control systems. Your advice is greatly appreciated.

Or, does anyone have any better suggestion?

Thanks in advance, JoeO

[Joe Owensby]

Thanks for the info. I have been doing some digging, and found the following:

I have found a major parts supplier that has Bosch injectors #280150007 for $56.95. I think this is for a new part, but need to make completely sure. Says this part is for the VW 411 and 412, years around 73. Checking out the specs on the witchhunter site, it says that this injector has a flow of 340cc @4bar, and 2.1 ohms resistance. Checking witch hunter for a 280150009 (the number given by the bird for a 1.7 injector), it gives a flow of 340 @4bar, and 2.5 ohms. Note, other references give the a flow of 265 at 29psi for the 009, but this is at a lower pressure than the flows on witchhunter, so I assume that the 340 flows are equal for the two injectors at equal pressures.

Is there any difference in the manifold mounts between the 914 2.0 and the 411's?

So, I am thinking this would be a good buy to get 4 for a new SDS injection system. Am I missing anything?

The cheapest I have seen the 1.7 injectors new is about $195, and it would hurt to buy 4. I wanted to have new ones as opposed to having mine rebuilt (actually all they do is cleaning) as mine are 35 years old.

Another option is to get a set of the accel 24# injectors for about 240$, for 6. This would require reaming out the manifolds and making a fuel rail. No big deal, but just another thing to do. The accel brand comes highly recommended in the hot rod circle, but I am not sure of their reliability. I also found some on the net that were new made by Carter for about $50.00. I haven't found the exact flow on these, and I also do not know the reliability of the Carter units.

Any comments and advice are greatly appreciated.
Thanks, JoeO