-- Return of the rotary engine to American Le Mans competition highlights weekend --
IRVINE, Calif. -- MAZDASPEED Motorsports Development today kicked off its return to top-level professional sportscar racing with a second place finish in the LMP-2 class at the Sportsbook.com Grand Prix of Atlanta, at the famed Road Atlanta circuit. The three-rotor RENESIS-based rotary engine was jointly developed by MAZDASPEED and SpeedSource, Inc., and was chosen by B-K Motorsports to power their Courage chassis because of its compact size and broad power-band.
Representing Mazda in the Sports Car Club of Americas SPEED World Challenge Touring Car race on Saturday, Jeff Altenburg drove his MAZDASPEED/Tri-Point Motorsports MAZDA6 to second place. Starting seventh on the grid, Altenburg took advantage of a strong start and consistently competitive lap times to tear through the field. Finishing fourth was Charles Espenlaubs Mazda Proteg, with Altenburgs teammate Randy Pobst bringing his MAZDA6 home in seventh.
Another great weekend in the books, said Steve Sanders, manager, MAZDASPEED Motorsports Development and the man responsible for Mazdas North American motorsport operations. There really is nothing in the world of motorsports quite like the sound of that Mazda rotary engine at 9,000 rpm, and its a real thrill to know well hear that sound at every American Le Mans race this year. This weekend saw two very different Mazdas competing in very different classes, but they both had one thing in common: the soul of a sportscar that exists in every one of our vehicles.
The next weekend out for both B-K Motorsports ALMS LMP-2 Mazda RENESIS-powered Courage and the full complement of MAZDA6 and Protg SCCA SPEED World Challenge teams is the American Le Mans at Mid-Ohio on May 20-22.
No. It might be splitting hairs, but turbos allow you to get more power from a given displacement over NA. It was the sequential set-up which allowed that power to arrive earlier, at lower revs, for a streetable car.spacemonkey said:The powerband might not have anything down low but broad being its distributed thoughout its RPM range and makes peak at the end. And turbos will allow it to get more torque and bottom end performance but their is a reason why its used in so many endurence races back int he day.
I guess I don't understand. Not saying this is wrong, but if power output is the same and the car is geared accordingly, how are having more 'revs' , by themselves, advantageous to road racing? Regarding the Ferrari vs. Corvette, I thought we were comparing an LS1 against a rotary, and the qualities of two comparably priced engines. But irregardless... I'm not familiar enough with the Daytona course to comment for sure, but (respectfully) my first reaction is...so? It's the entrance and exit speed and acceleration out that counts, not revs or having to change gears. I do think it's significant that the C5-R probably cost a fraction of what that Ferrari cost but was obviously still competitive.spacemonkey said:Revs are good for road racing...maybe a bit hard but atleast there is a advantage. I remember watching Ferrari 360s take on the corvette at Rolex 24 hrs at Daytons. coming out of turn 3 the Corvete would have to shift while the ferrari just kept on going. I'll take a 9000 rpm red line and less wheel spining torque over...im just a sucker for high reving engines.:
I don't have stock in GM and the only V8 in my garage currently is a NORTHSTAR. But don't dismiss the ability of the pushrod just to NASCAR. Besides, why would you want the ZR1 over a ZO6, which was lighter and faster?spacemonkey said:Im not a huge fan of pushrod engines and leaf springs...sounds like the 1960s all over again. No variability in intake/exhaust timming...I would almost take a DOHC Ford V8 over a pushrod. I like the C6 but the engine kills it. Thus for performance I would take the ZR1...DOHC lotus/GM breed race car. Saleen S7 is a sexy car but the eingine kills it for me. I tried but never will be a fan of pushrods.
Im a Formula 1 900 hp DOHC V10/V8 fan and not a NASCAR 700 hp pushrod V8 fan.
A car doesn't have to cost more than the average house for me to be impressed.spacemonkey said:I will admit one thing...Pushrod engines are cheaper to make because DOHC engines when designed right are very pricey. Thus why the Corvette and Viper can be priced so low. And why the ZR1 package was the most expensive factory add on to date.
boostisgood said:Im with DextarKeep the rotary, thats what makes an RX-7 and RX-7. Put the LS1 in a miata, they need to be ungirlified anyways.
(joke dont no one get mad at me)
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Dexter said:....but in an FD, WHAT are you THINKING :mad:
pdhaudio83 said:i think he said a little over 9k
shaneMazda2000P said:63k, time for a new engine and turbos soon..
Signal 2 said:Not necessarily. Depends on how it was driven, number and types of mods and how well it was maintained.
I've got 71k on mine, with all reliability mods plus what's in sig. I take care of it and don't beat it like a rented mule. Pulls 18 hg/in vac @ idle and boosts 10-8-10.![]()