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| Rotary Tech - General Rotary Engine related tech section.. Tech section for general Rotary Engine... This includes, building 12As, 13Bs, 20Bs, Renesis, etc... |
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Rotary Fanatic
Join Date: Mar 2008
Posts: 215
Rep Power: 18 ![]() |
rotarygod says it's ok to run sleeveless. Some R5 rotor housings only had a ring near the outlet of the port leaving a cavity/expansion chamber from the inlet right up to the ring. I assume this was for noise control before Mazda came out with the diffusers in NA FC rotor housings.
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