Zmanco Posted August 7, 2008 Share Posted August 7, 2008 When I had the P90 head shaved I gave the shop 2 sets of springs etc so they could use the best ones. I also gave them a set of the longer valves from an N47 head hoping that when I move my cam over that I'll be able to use the same lash pads. They felt they needed to use a second washer under the springs in order to get the proper fit. Given the valves are longer than the P90 valves and there is only 1 spring part number used for all the L6 heads, I think this makes sense. But to be sure before I put it all together and onto the car, I wanted to check that this is indeed the right way to go. I've seen a few write ups on using a P90 on a NA engine, but I don't remember this being mentioned. Quote Link to comment Share on other sites More sharing options...
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