[mrm930]

thanks for the diagram bucket list. However that is not the fuel head that I have. I will take pics and post.

I bought this fuel head from Dave at TurboKraft when Chris Carroll worked for them. I was intended for a V-8 Mercedes race engine. Dave revised it to a 6 cylinder to use on Porsches. About 3 years ago I send all of my CIS components to Chris at TurboKraft for a complete rebuild. This fuel head is supposed to push alot more fuel than the factory ones. Not sure what that means for the WUR though. I probably should contact Chris.

My "pressure control" is mounted vertically at the front of the FH. I removed the banjo cap and the plunger. No shims, also no springs. Since it is mounted vertically, the plunger moves upward under pressure. The shims limit the height that the plunger will move. So the only way to increase the plunger height position is to increase the height of the banjo fitting.

No shims - so I fitted a thicker copper crush washer at the banjo insert. I increased the thickness by .5mm. The system pressure did drop. However the gauge still reads beyond the 7 bar markings. But it did drop.

Question - Do I calculate how thick this washer needs to be to bring the system down to 6.5-6.7bars? Do you think that I can stack crush washers without a leak? Quick estimated guess is that I need a the crush washer to be about .125" (5mm)