Quote:
Originally Posted by MST0118
Yes, great points. I’ll tune first with this cam and report back later. I’m running the Supertec enrichment device so don’t have fuel squirters or any other things that would effect enrichment. The problem is that if I adjust the rack to make it richer on the top end then I will become too rich on the bottom. The good news is that Mark Jung said that he can help recalibrate pump so I’ll sending to him this winter.
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I don't have any real experience with these early mechanical injected engines. What work what doesn't. However, if we were to get involved with building one of these mechanical injected engines, I would want to know a few things about the pump. How many crank degrees is it on and how many off. I could calculate the start of the Injection, or the end or the middle. Then, I would look at the cam spec's the dome of the piston and consider if I needed to include a bowl in the piston dome then figuring out of the pistons are suitable without. Injection timing plays a huge role here too. I cannot see how you can consider a cam profile or its settings without first knowing the injection timing.
Do you know this?