13b pp in a austin mini

[ARC91]

hi i\'m Gary have been racing class 7 autograss for a while now with a rear engine rear wheel drive big bore hayabusa in a mini, have decided to go rotary for next season, already got an engine will be mounting it transversley with a 3 speed GBZ race box, the engine comes with microtech management is this any good, will probably have lots of questions ( some probably stupid ) over the next few months, as the build proceeds, might even have it displayed at the autosport show at the NEC if its finished in time this is a link to a you tube video to give you some idea of what the car will be used for    http://www.youtube.com/watch?v=pmGct9jpCUM  :WaveBye

[Brett]

Awesome stuff!

[shaunwil]

Looks loads of fun !

There is a very good microtech section on RX7club : http://www.rx7club.com/forumdisplay.php?f=111 Which is worth having a browse.

Welcome aboard

Shaun

[Casey]

Wild stuff :2eek

A very interesting project - I\'m sure there are some MRC members on here can advise as you go along. Keep us posted on progress!

[clive]

First of all welcome to MRC,

Not sure what is allowed in class 7 but can you not turbo it to get some real horsepower or is it a built PP engine already,

What ever you do we all wish you the very best of luck next year and if your able to post pictures, I know lots of people from all over the world will be interested :Thumbsup!

[Grant Monkhouse]

Don\'t forget Clive that a PP 13B can produce just over 300 Fwhp. If done correctly, and by the right person  And I would imagine this would be more power than what the hiyabusa engines are producing??

Turbo rotary power is the way to go though.

[fil_auto]

that looks fantastic... the pull / power from them, wheelies FTW

[ARC91]

hi guys, the engine is putting out just under 300bhp at the mo n/a, because we race on dirt you have to be able to get the power down if i was going turbo i would probably go for a non sequential twin set up, its all about power to weight and traction, the hayabusa was a bit light on loose or wet surfaces so hoping the extra weight will help with traction, engine built and mapped by pip by the way

[TiddlesRX7]

Looks like a lot of fun that does. Hope the engine swap goes well. Keep us updated with  pic\'s and vid\'s along the way.

Where do you race them at?

Ade

[ARC91]

oh and clive the only thing your not allowed in class 7 is turbo charged or supercharged motorbike derived engines, the most common set ups are big bore single bike engines, twin bike engine, v8,s and supercharged s2000 engines with a few millington diamonds and powertec v8,s thrown in,:driving

[ARC91]

hi Ade we race all over the country, theres a track near you just off the M6 at penrith, if your going to the autosport show in january the class 7s run demo races in the live racing arena, usually a good watch

[TiddlesRX7]

That\'s awesome. I never knew there was a track near me. I just thought there was a few banger racing tracks thats all. Is there a website with info about race dates and locations. My eldest son would love this big style! Oh and I might like it a little too

Ade

[Grant Monkhouse]

Do you have to worry about noise limits? As an unrestricted PP will produce a little more HP, but it will be awesomely loud!

[ARC91]

hi try http://www.national-autograss.co.uk/ class 7 is just one of 10 classes from 1000cc unmodified minis to class 10 unlimited open wheelers, this season is just about finished but this site will give you the basics.
 
hi Grant, we\'re limited to 102dbs, still trying to find out at what revs though because nobodys run a rotary before,might have to turbo it to keep the noise down

[Grant Monkhouse]

Turboing a PP isn\'t going to reduce the noise much. Also you probably have high compression rotors in the engine so you probably can\'t run too much boost, I\'m guessing about 8psi. Would still pump up the HP power though.