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Group B RX-7

Posted by eyesoreracing 
eyesoreracing
Dave Coleman
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Location: Long Beach, CA
Join Date: 05/13/2007
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Posts: 448

Rally Car:
Mazda3, SE-R Spec-V, 510



Re: Group B RX-7
April 10, 2010 01:29AM
john vanlandingham Wrote:
>
> Who knows what they did on a GpB car, but Nissan
> persevered with recirculating ball on the 240RS,
> probably Mazda did, too.
>
>
>
> John Vanlandingham
> Sleezattle, WA, USA
>
> Vive le Prole-le-ralliat
>
> www.rallyrace.net/jvab
> CALL +1 206 431-9696
> Remember! Pacific Standard Time
> is 3 hours behind Eastern Standard Time.


As I recall, they actually used an old 510 steering box in the 240RS! It was bolt-in interchangable, and at around 15:1, way quicker than the standard 200sx box. Hard to imagine a shitty 510 box being an upgrade for anything...

-Dave
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Pete
Pete Remner
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Location: Cleveland, Ohio
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Re: Group B RX-7
April 10, 2010 06:49AM
If you look in the underhood pic of the Group B car you see no box, and you also see a steering shaft with two U-joints disappearing under the front of the engine.

Dave, I used a complete FC front suspension, from an '88 parts car. Make two mounting brackets for the rear subframe bolts (they sit an inch lower and go about where the box used to be), and either relocate the front subframe studs or shift the wheel centerline forward an inch and re-use the existing ones. I chose the latter. You have to figure out engine mounting - already have a 13B built with FC parts so that made it easy. Make steering shaft - I lengthened the FC shaft and used an FB power steering column. Someday there will be a quickener in there, money's not here right now.


It was way easy and cheap.



Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.
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john vanlandingham
John Vanlandingham
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Saab 96 V4



Re: Group B RX-7
April 10, 2010 08:49AM
Pete Wrote:
-------------------------------------------------------
> If you look in the underhood pic of the Group B
> car you see no box, and you also see a steering
> shaft with two U-joints disappearing under the
> front of the engine.
>
> Dave, I used a complete FC front suspension, from
> an '88 parts car. Make two mounting brackets for
> th

What you CAN do under OUR rules and what THEY could do under GroupN, GpA, and GpB is the question. GpB was not "open", everything still had to be homologated, the question type of steering "free: in "B'.

I don't know, and really at this point on that car, don't care---the important thing is WE can shove in the whole front everything off of the Second Gen.
>
>
> It was way easy and cheap.
>
> Pete Remner
> Cleveland, Ohio
>
> 1984 RX-7 (rallycross thing)
> 1978






John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
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Aaron Luptak
Aaron Luptak
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Civic...



Re: Group B RX-7
November 15, 2012 09:23AM
back from the dead-

Speedhunters has a pretty nice feature on Rhys Millen's new (to him) Group B RX-7:
http://www.speedhunters.com/2012/11/retro-rally-rhys-millens-group-b-rx7/



KF7RWG
http://www.utahrallygroup.com
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Pete
Pete Remner
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Location: Cleveland, Ohio
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Posts: 2,022


Re: Group B RX-7
November 15, 2012 01:15PM
That's the same article as was posted somewhere else, down to the dumb comment regarding the tach.



Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.
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