Not sure about the diesel 6 cyl, but I just went through this on a 1.8L gas 4cyl, and found that besides the obvious problem of a lack of oil feed, the camshaft in a mechanical head has a larger base circle dimension.
IOW, if a solid cam is installed w/ hydro lifters, the bigger lifters will hold the valves off the seat at all times.
Conversely, a hydro cam with solid lifters will not contact the lifters during the base circle, only about halfway up the ramp will there be contact.
__________________
Thanks,
Jim C.
1985 745 TD MT (project)
1986 A2 Golf GTDI swap LeMons racer (very not stock)
2001 Golf TDI (not stock)
Last edited by FJ40Jim; 02-18-2014 at 05:54 AM.
|