So finally I got one camshaft how I specified it and yes it took some time to develop as Scania did a good job making it complicated with the cam followers in a very odd angle. The other one (this engine got 2 camshafts) is not bad but looking @ the AFR numbers and smoke EGT and so on the cam profile dos not have the open en close ratio of the valve travel al do the duration is the same so it lacks some flow as it to asymmetrical in its lift.
Now we got everything in place we are planning to build billed cams manly for US and Canadian marked as there is demand for it. Scania cams is out of the question mainly as I do not want any of these profiles ending up with the competition or other customers/companies making copies of them as did happen with other stuff that did work a lot better as there own creations.
Also for the PDE Scania lovers. We are almost on the end of performance of this injection system as we got one set of cams under construction that hopefully can deliver fuel in les crank duration but reality is we easily surpass these numbers by converting to commonrail with less boost and now smoke so we are already engineering toward commonrail set-up mainly using OE parts. Also with PDE we maintain max torque over RPM so yes on hi RPM we make a lot of power but we can not produce more torque when the RPM goes down and we need more as we can not keep up with the 18,4L engines any more as we only have 16.4L but the older 15.6L produces the same power with the only difference that’s it jumps into the compressor surge line 200Rpm sooner as it runs the same turbochargers as the 16.4L and has a milder cam profile so it moves less air. With the pump cam we run now we only use 0,7cc per stroke effectively for making power and any thing more is used for making EGT/boost/drive pressure/flame cones on the stacks. LOL
Still going strong on the 2x Scania XPI Dakar semi trucks. Hope next week we up for it to run the first one.
Our little machine in the workshop.
[ame="http://www.youtube.com/watch?v=wttzKQKALKA"]http://www.youtube.com/watch?v=wttzKQKALKA[/ame]
[ame="http://www.youtube.com/watch?v=8TVn9TiFzo8"]http://www.youtube.com/watch?v=8TVn9TiFzo8[/ame]
[ame="http://www.youtube.com/watch?v=8TVn9TiFzo8"]http://www.youtube.com/watch?v=8TVn9TiFzo8[/ame]
[ame="http://www.youtube.com/watch?v=3Omt82EJ_qU"]http://www.youtube.com/watch?v=3Omt82EJ_qU[/ame]
[ame="http://www.youtube.com/watch?v=uHb0IHdIgGs"]http://www.youtube.com/watch?v=uHb0IHdIgGs[/ame]
[ame="http://www.youtube.com/watch?v=HDiAfUvlJPs"]http://www.youtube.com/watch?v=HDiAfUvlJPs[/ame]
[ame="http://www.youtube.com/watch?v=QhjpqJuaIOg"]http://www.youtube.com/watch?v=QhjpqJuaIOg[/ame]