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Message: [QUOTE="kleake, post: 1399993, member: 25987"] Ok machinists, I picked up a different valve spring compressor and got an accurate valve stem height. They look to be within spec, however there is a little shim/rotator at the bottom of the spring. I couldn't get it out of the head but spec shows 2.300-2.320 and I was getting 2.310-2.315 with this cup in. The question though, are these supposed to be measured with these in place or directly on the casting? Everywhere i'm reading says directly on the casting but that is just standard heads, not the 6.4 specifically. If it's supposed to be casting, that would explain this big time! If it's from the top of that rotator, then they are within spec, still raising questions. I'm still machining the top of my bridges, but at least I will feel more comfortable knowing for sure. [ATTACH=full]166425[/ATTACH] [ATTACH=full]166426[/ATTACH] [/QUOTE]

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