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Seems like Bruce's solution of "squeezing" the grooves back to specs merits further investigation/description.
There is definitely contrary facts here. Stable datum used to be that "seals don't break unless in turbocharged applications". I wonder where all George's broken seal rotors came from. Turbo or non-turbo apps?
Finn
Jim Sower wrote:
It appears I've missed something along the way here. We've got all these rotors being pitched because the apex seal slots are wallowed out a little. The replacement price seems pretty high (and likely to inflate quickly when more folks start inspecting the slots of replacement rotors) and one has to wonder how long the "used rotor" supply will last. What I seem to have missed is the compelling reason why we can't simply mill the slots out to 3 mm, install new seals and continue the march. I know Tracy's "new formulation" seals only come in 2 mm, but I speculate that would be pretty easy to change given the current rash of wallowed out 2 mm slots and the potential market for 3mm versions. I've got this idea that 3 mm seals has been sort of "elective surgery" and perhaps priced accordingly. Given the potential demand, it seems this could change significantly.
From an engineering standpoint, what's the problem? ... Jim S.
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