Travieso Racing 10.21@130 video link--->

http://dl1u.savefile.com/651f8f4fad237e ... avieso.wmv

http://videos.streetfire.net/video/10b4 ... 3dab94.htm

Crispeed, I just checked out your website and your Rx3 is really impressive.

Could you give us all some info on your engine setup?
You look like your running a convential PP, what size are the ports, Tb's and what is your maximum RPM?

I imagine you use rx8 rotors also?

Rx8 rotors suck. Waste of money in my opinion

Agreed!

The alternative in a big HP N/A rotary is what?

Apart from the slight trouble in machining the correct apex seals to fit, I can't see why the wouldn't be a big asset.
Considerably lighter, stronger, better balanced and higher compression. Oh and aren't they cheaper as well?

I am not being a smart ass, as I would never argue with the results Crispeed has shown, but what exactly is the downside?

Some of our and other racers findings-->
#1 They cannot be lighten as much as earlier rotors.
#2 They are not stronger.
#3 Any rotor can be balanced.
#4 Higher compression does not make up for side seal sealing issues. I've yet to see a RX-8 motor make more compression than a properly built earlier motor.
#5 They use to be cheap. Not any more.

1st pass right off the trailer resulted in a 10.56@124mph

Rene's Mazda IDRC specs:

1983 Mazda Rx-7 (hard top)
2080LBS at California speedway (all steel body)
13BPport(built and tuned by Rene)
Alcohol fuel injection(Microtech LT10s)
Custom intake manifold(custom built by Rene)
26x8.5 inch M/T rear slicks

Best ET and MPH

60ft-1.44
660ft-6.72@101MPH
1/4mile-10.56@124

http://www.rx7club.com/attachment.php?a ... tid=207195
http://www.rx7club.com/attachment.php?a ... tid=207196

WELL DONE crispeed mate. that really is an impressive time.

links inop

sorry if I doubled up. Just some random pics I have (got over 1600 pics of engines and FC's


home made chamfered rotor's
below the propper type

THE cleanest 13BT ever...





Below is a Semi PP manifold, still running the primary and secondary intakes


Please tell me this is photo shopped..... I really cant tell (count the spark plugs)


Quads




the manifold



ever wondered what your stock s4/5 manifold looked like inside ?

mate it nearly looks real doesnt it?

very hard to tell but i put my vote in for it being real.

how much power is the yellow engine bayed car makin,the intake is very impressive indeed,the plenum is a lot like a phil laird manifold.

jason

Yep its real, just like the Le Mans cars had 3 plugs per rotor

Its a hogan manifold. (Or a copy of one)

Page 5 of the catalogue http://www.hogansracingmanifolds.com/

Steve

Whats the deal with the chamfered rotors?
Why?

Originally done for lightening but there would also be some level of decompression. Whether or not you want it forcing onto the side seal is another thing though

Port opening time...

Mainly done for increasing port timing or duration. Depending on chamfer position the port will open earlier and close later.
Even the present RX-8 rotors have it done to a lesser extent mainly for closing the port later.
Works very good especially in boosted applications!

spot on

I have more pics of the yellow FD with the 20B, his aiming for 1000 rwhp from memory. I will try to find a link.

just writing in here so i can look at this shit at school my dial up too slow