Hi Joerg,
Regards the swirl pot you will need to source an external one. I'm sure such things are availale locally to you but if not rallynuts, demon tweaks or a whole raft of UK motor sport companies will help you out.
Fuel swirl pots are an absolute necessity in real performance track cars or rally cars so they are not hard to find
To be honest, if you are really going to be needing 4x1000cc injectors then I doubt the Sard 265l in tank pump will suffice. It will be close to it's flow limit and I would be uncomfortable with it
As I said before, 4x1000cc injectors will flow 4l/min or a maximum of 240l/hr. This would be about 90% of the Sard pump capacity and would worry me. Especially if I had built an engine which needed such a fuel supply as a shortfall in fuel capacity is most likely to result in a very large bang.
In reality, given that you are not likely to really run the injectors at 100% it would probably work but there's not much room for manoeuver
External bosch pump - absolutely. I think the common motorsport on goes under the name of an 030 pump? Again, anyone used to building or supplying parts for high performance vehicles will know exactly what you want as it's an indusrty standard sort of setup
Mook has an interesting point. Running two banks of injectors is an alternative to running huge main injectors and is very common in the world of Ford Cosworth tuning.
The problem with a set of 1000+ fire hydrant injectors is that at tickover it's hard to get a small enough amount of fuel into the engine.
When you run two smaller banks only one of them is used at low rpm giving you much better control over small fuel requirements
Then, as your GT35r starts to spool the second set comes online to give huge fuel potential
However, running such a setp requires a fully programmable ECU like MoTeC, Autronic, Haltech and is not possible with the PFC you have fitted right now
I'll see if I can dig out a few pictures of rally car boots. I'm certain I have one from Rally Day last year of the rear end of a ford escort which had a very typical fuel supply setup
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