Air intakes?
07-06-2006, 03:02 PM
#32
Member
Join Date: Apr 2006
Posts: 83
Still cant get a copy but i saw the final numbers again and they have actually now gotten rid of the michrotech and are using a hacked stock ecu. The stock car that we dyno'ed made 167hp to the wheels. The last dyno was around 220whp peak. They have been working with Racing Beat along with Mazda Speed and a couple others and found that with 2inches + for the diameter of the runners and 4inch exhaust the car continues to make more power. Grand Am is now letting them run a header, but the header they have is only good for about 4hp, the new one with larger runners and bigger exhaust should make more. The engines are now RB built engines, but most of the mods are for cooling and reliability, no real power mods. Ceramic apex seals, engine balanced to the lightest rotor, grooved water jackets, etc.
Part of what they are doing that is making power is premixing to around 40 to 1. There seems to be no amount of premix you can add to the fuel that doesnt make more power, but much more than 40:1 and the plugs start fouling really fast. Rotaries make more power on 87 octane and i suspect it has to do with the burn rate, and adding lots of premix to 98 octane should slow the burn rate also. 87 octane with lots of premix would be the best of both worlds, but 98octane is the spec fuel. They are premixing 40:1 and they have a modified OMP that injects more oil than stock also.
Part of what they are doing that is making power is premixing to around 40 to 1. There seems to be no amount of premix you can add to the fuel that doesnt make more power, but much more than 40:1 and the plugs start fouling really fast. Rotaries make more power on 87 octane and i suspect it has to do with the burn rate, and adding lots of premix to 98 octane should slow the burn rate also. 87 octane with lots of premix would be the best of both worlds, but 98octane is the spec fuel. They are premixing 40:1 and they have a modified OMP that injects more oil than stock also.
07-07-2006, 10:52 PM
#33
Senior Member
Join Date: Aug 2005
Location: Freeport FL
Posts: 381
Originally Posted by wankelTII' post='827106' date='Jul 6 2006, 03:02 PM
They are premixing 40:1 and they have a modified OMP that injects more oil than stock also.
07-09-2006, 10:47 AM
#35
Member
Join Date: Apr 2006
Posts: 83
"they" are the 2 or 3 guys that are my good friends who chose to continue working there even though the pay sucked, the Nephew of the guy that designed the Garret GT series turbocharger, they are getting alot of hlep and direction from Racing Beat, and MazdaSpeed has been a big part of everything too.
The guy that worked with garret also happens to have a Datsun 510 with a 13b that makes over 600hp, i am sure everyone has seen it in magazines, its considered among most to be the nicest 510 in the world. He was also a Mazda engineer for a really really long time.
I am not just making this stuff up we spent tons of time on the dyno, and Racing Beat is telling them to do most of the stuff anyway. These guys are basically taking Speedsource's place with Mazda and Racing Beat because Sylvan Tremblay (owner of Speedsource) didnt want to do things any way but his own. I believe funding for Speedsource's P port 20b rx8 has already been cut.
I am not going to say any names of the people involved just yet and i am not going to advertise for the team either. So you can all just believe what you want, it doesnt bother me one way or the other.
The guy that worked with garret also happens to have a Datsun 510 with a 13b that makes over 600hp, i am sure everyone has seen it in magazines, its considered among most to be the nicest 510 in the world. He was also a Mazda engineer for a really really long time.
I am not just making this stuff up we spent tons of time on the dyno, and Racing Beat is telling them to do most of the stuff anyway. These guys are basically taking Speedsource's place with Mazda and Racing Beat because Sylvan Tremblay (owner of Speedsource) didnt want to do things any way but his own. I believe funding for Speedsource's P port 20b rx8 has already been cut.
I am not going to say any names of the people involved just yet and i am not going to advertise for the team either. So you can all just believe what you want, it doesnt bother me one way or the other.
07-11-2006, 09:18 AM
#39
Senior Member
Join Date: May 2002
Location: California
Posts: 22,465
Originally Posted by guitarjunkie28' post='827770' date='Jul 10 2006, 09:04 AM
well there's power to be had. it's just very hard to extract it with the stock computer.
didnt really look at the car, but it appeared to be stock ecu (they almost flooded em, they needed the updated batteries and starters), with an exhaust