I am working on a 1.9/1.6 engine right now. I have brand new valve springs that I have for my 1.6 head that I am no longer using since I went the 1.9 route. Question is will the springs from the 1.6 work in the new head. I see there is a .090" difference between the two springs with the 1.6 springs being longer. I figure the difference is because the 1.9 is hyd lifter and the 1.6 is solid. With that thinking the vavle stems are shorter in the the 1.9.
All I can figure is there will be more tension on the valve with the longer springs as long as I don't coil bind the longer spring. Has anyone else tried this?