Mazdatrix and the rx8 rotors?
08-25-03, 07:21 AM
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08-26-03, 04:35 PM
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Testing is still being done. I was "expecting" fairly substantial apex seal damage on the FIRST power pull - did not happen.
We have not had a lot of time available to "play" with this experiment -- have been more occupied with getting the E/Production car ready for the "SCCA Valvoline Run-Offs.
So, first easy answer: Yes, the RX8 rotors WILL run in an "earlier" 13B engine with peripheral exhaust ports.
Second question/answer: How LONG will they run? - Don't know yet.
Dave Lemon
We have not had a lot of time available to "play" with this experiment -- have been more occupied with getting the E/Production car ready for the "SCCA Valvoline Run-Offs.
So, first easy answer: Yes, the RX8 rotors WILL run in an "earlier" 13B engine with peripheral exhaust ports.
Second question/answer: How LONG will they run? - Don't know yet.
Dave Lemon
08-27-03, 04:06 AM
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Thats going to be a great upgrade for us NA guys, Thank you so much for undergoing the expence of testing it out so we dont have too.
Also, since its allready on a dyno, about how much HP did just the rotor swap pick up?
Also, since its allready on a dyno, about how much HP did just the rotor swap pick up?
08-27-03, 10:44 AM
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?? There is no "2nd" side seal --
We are NOT using the 3rd oil control ring (called a "blowby scraper"). It is only needed on the real side port Renesis motor. Btw, that ring is just like a large, HEAVY, piston ring - meaning solid, with a split, and you have to "squeeze" it to set it in its groove.
There are no HP numbers to publish yet -- there are too many other variables -- meaning we have NOT done "back-to-back" testing where the ONLY change was the rotors (intake AND exhaust porting have been different with the engine we put them in).
Power gain?, if any, I do NOT expect to be substantial. -- We are looking more at them as a viable alternate rotor: cheaper at this time than any others, lighter than any other OEM rotor, AND higher compression.
Dave Lemon
We are NOT using the 3rd oil control ring (called a "blowby scraper"). It is only needed on the real side port Renesis motor. Btw, that ring is just like a large, HEAVY, piston ring - meaning solid, with a split, and you have to "squeeze" it to set it in its groove.
There are no HP numbers to publish yet -- there are too many other variables -- meaning we have NOT done "back-to-back" testing where the ONLY change was the rotors (intake AND exhaust porting have been different with the engine we put them in).
Power gain?, if any, I do NOT expect to be substantial. -- We are looking more at them as a viable alternate rotor: cheaper at this time than any others, lighter than any other OEM rotor, AND higher compression.
Dave Lemon
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08-27-03, 03:49 PM
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Its good to hear its getting to the point were testing of the new rotors on pre-rx-8 rotaries is coming along. I think the main point is to get higher compression for a 6port engine and lighter weight rotors is nice. However this probably means, a new balanced assembly for a 6port engine then....
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