...BTW your Bieber avatar is awesome.-Malone
The govenor off the cummins pump had already been modded to rev around 5,000. The problem is the surge at idle. From what I gather it is an uncaged govenor and drives more like a truck than a car. It is weird as hell to put my foot down, nothing happen then it takes off. Or on a hill leave your foot in one spot and when more load comes it just picks it up for you and pulls the hill at the same rpm. The part I absolutely hated was when in 5th at just above idle speed it would surge like crazy. Shudder if you will, with very little pedal input and once that started you couldn't just floor it and make it stop. If you floored it then it would get worse until it got well into the rpm range. Whenever the same rpm and less pedal wouldn't make it do it if it hasn't started surging. The only way to make it stop with out rattling your brains was to downshift and give it tons more pedal. That made it almost a drag car only kind of ride. Which it did run good and had good pickup, but I daily this thing and IT SUCKED.FWIW there is only 1 gov spring on this pump. Completely different than the 2 or 3 spring setup that VW has in its pump. Might be an area I could try to weld...hadn't thought of that
I have often dreamed of building a pump with an uncaged governor. Your problems might be coming from the heavier spring used to increase the RPMs.Isn't it a 2 spring though? One small one for idle and then the large one for everything else?I think you can swap on the VW governor and LDA.
enough boost is when you have 3 dimple marks in the hood from the valve cover nuts..
The guy I bought it from got a 5,000 RPM spring and it is one single spring. I have an N/A pump on now so it isn't in emergency status. I would like to build one of my aaz engines and put that pump on it eventually.