Autoweek: Mazda to return to Sports Car racing!
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Joined: Jul 2004
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From: Atlanta, GA
guys, i went and visited ceramicseal because he is local, here are some pics I took at his place/shop
http://67.106.221.4/rotary/100NIKON/
http://67.106.221.4/rotary/100NIKON/
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Joined: Jul 2003
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From: NC
Originally Posted by 8pex
I was surprised in this article they didn't mention the 1991 mazda victory at le mans. BTW, it was a 4 rotor.
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From: atlanta ga
Just for you Keech!
We taped the 4 rotor RX-7 for your listening pleasure. Professor Engman started it up for us (Best I've ever heard, even better than the 787 stuff.) 93Black was transferring all the data for me and unfortunately called to tell me of the demise of the tape; it got chewed up by the camera. 
Anyhow I'm gonna get the Kudzu on tape for you instead.
I'll take my kiss on the cheek please.
Anyhow I'm gonna get the Kudzu on tape for you instead.
I'll take my kiss on the cheek please.
05 Champ Car Test Driver
Joined: Jul 2004
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From: Calgary, AB - Canada
Pro Mazda Vs. Toyota Atlantic
Pro Formula mazda is 1300 Lbs (driver included). Yes, Toyota Atlantic is a bit faster than the mazdas but it is not due to the engine. Actually, the renesis has a higher torque and top speed than the toyota, however, the atlantic is faster because of the tunnels they got on their chassis. While mazdas are faster in the straights (153 MPH_Mazda Vs. 147 MPH_Atlantic), toyota atlantic cars can carry tons of speed through the corners due to the huge tyres and tunnels in their chassis that provide them a lot of grip. Try to do a straight race between those two cars and see the Pro Mazda kicking some atlantic's ***!!! :D
P.S. The Pro mazdas are not being slowered down, it is a mistake. We are pushing the engine the most we can. We have the rev. limiter to 8,500. For reference, we are 1-2 seconds a lap (depending on the track) slower than toyota atlantic.
P.S. The Pro mazdas are not being slowered down, it is a mistake. We are pushing the engine the most we can. We have the rev. limiter to 8,500. For reference, we are 1-2 seconds a lap (depending on the track) slower than toyota atlantic.
Originally Posted by wakeech
oh, well that would explain it then... but i was sure that they had to be slower than the Toyotas...
toyota atlantic minimum weight = 1265 lbs with driver
engine= HRE prepped 4A-GE, i dunno how many valves (not sure on the power, ~240 or a little more, which is at the very limit for that engine)
mazda pro minimum weight = couldn't find that either, but the mass of the old kart and the sports car as listed on their site was 1160lbs for both. i'm assuming without driver
engine= OE 13B-MSP, makin' ~240 hp as we all know
i'm not sure about you, but to me it doesn't seem that the Atlantics would really be appreciably faster, it'd kinda be down to aero and tyres. *shrug* i coulda sworn i heard about a deal where Star Mazda agreed to detune the cars or something, but if that's not the case then i'm quite happy for it :D. i'd love to see "the little racing series that could" really come out on top and steal away that CART contract.
toyota atlantic minimum weight = 1265 lbs with driver
engine= HRE prepped 4A-GE, i dunno how many valves (not sure on the power, ~240 or a little more, which is at the very limit for that engine)
mazda pro minimum weight = couldn't find that either, but the mass of the old kart and the sports car as listed on their site was 1160lbs for both. i'm assuming without driver
engine= OE 13B-MSP, makin' ~240 hp as we all know
i'm not sure about you, but to me it doesn't seem that the Atlantics would really be appreciably faster, it'd kinda be down to aero and tyres. *shrug* i coulda sworn i heard about a deal where Star Mazda agreed to detune the cars or something, but if that's not the case then i'm quite happy for it :D. i'd love to see "the little racing series that could" really come out on top and steal away that CART contract.
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Joined: Aug 2003
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From: Sunset Beach, Calif.
Regarding the outstanding LeMans winning 4-rotor engine, was it a "genuine" 4-rotor engine, or was it two 2-rotors linked together (much as some European cars of the 1930s had V-16 engines out of 2 straight-8s)?
Would anyone who knows please enlighten us?
Thanks.
Would anyone who knows please enlighten us?
Thanks.
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Joined: May 2003
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From: atlanta ga
The R26b is a dedicated race motor designed strictly for that purpose. It has a multi-piece shaft, runs dry sump strictly, has factory peripheral port rotor housings with 3 sparkplugs each. It has the lightest cast rotors ever utilised. It's truly a magnificent piece although ancient now. It is definitely not 2 twin rotors, that's why it costed $100-120 thousand dollars when they were available.
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Joined: Aug 2003
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From: Sunset Beach, Calif.
Thanks.
Is there any reason, other than cost and the racing rule changes in the intervening years, why such an approach could not be applied to the RENESIS engine?
Also, is there any racing class that has favorable rules for such an appoach? Or could Mazda sponsor a "super" series?
Thanks again.
Is there any reason, other than cost and the racing rule changes in the intervening years, why such an approach could not be applied to the RENESIS engine?
Also, is there any racing class that has favorable rules for such an appoach? Or could Mazda sponsor a "super" series?
Thanks again.
Registered
Joined: Aug 2003
Posts: 23
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From: Sunset Beach, Calif.
Thanks.
Is there any reason, other than cost and the racing rule changes in the intervening years, why such an approach could not be applied to the RENESIS engine?
Also, is there any racing class that has favorable rules for such an approach? Or could Mazda sponsor a "super" series?
Thanks again.
Is there any reason, other than cost and the racing rule changes in the intervening years, why such an approach could not be applied to the RENESIS engine?
Also, is there any racing class that has favorable rules for such an approach? Or could Mazda sponsor a "super" series?
Thanks again.
mostly harmless
Joined: Jun 2002
Posts: 3,440
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From: Greater Vancouver Area, BC
Originally Posted by PaulieWalnuts
Given the side ports of the Renesis, anybody know how this will affect any new 3 or 4 rotor engines? Wouldn't 1800+ degrees running through a plate present issues?
i'm not entirely sure that mazda would use side exhaust ports (unless relegated to them specifically) or intake ports as they haven't in the past (in the top flight levels of racing). the peri port, as is easy to see, seriously seriously better than any side port and would of course be the only choice to go racing with (unless they aren't allowed).
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From: atlanta ga
A round of applause for Mr Keech. Absolutely correct, and hopefully the novices on here will pay attention to the statements he just made. Port timing, overlap, flow characteristics: the peripheral ports cannot be beat for peak horsepower. Now for street application, it would be a real dream come true to see, as many before have mentioned, a three or four rotor renesis powered car. Oh the possibilities. 
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