Originally Posted by Jeff20B (Post 14717)

The GSL-SE has such good oil injection that the seals will wear far beyond the limit of 7mm to th epoint where they break at around 5.5mm or so. If you can catch it before any of them break, there is a good chance the apex slots in the rotors will be in great shape. None of that slot widening you get with 12As and early carbed 13Bs with their inferior oil injection into the carb. By the time those hit 7mm, the apex slots are usually quite wide and require a new rotor or careful tapping of the tips back together, which is not a very good idea.

Originally Posted by RotaryResurrection (Post 14793)

Yes, the 1gen oil injection delivered a much higher volume of oil than the later versions. In fact the problem with rx-8s needing engines at 50k miles or less, comes down to a lack of OMP injection volume. They simply turned it down too far in an effort to pass emissions and rid the rotary of it's oil burning reputation. Now the seals are warping and wearing out prematurely.

Too bad the 1gens had shitty rotorhousings that started chrome flaking in 50-75k miles and caused compression loss and blowby. The coating on the rotorhousings grew stronger with each generation of engine so the later year models wear a lot less and do not flake as heavily.