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Mazda R100s, RX-2s & RX-3s in Australian touring car racing


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#151 Lee Nicolle

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Posted 13 November 2014 - 22:49

Grice_RX_3_Group_C_Sale.jpg

Am I too late to purchase the A9X for 20k,, hell I might try and do a deal. A9X and the Mazda too.

Though he can have the 5000 / Corvair engine. I can build a far better one for the same dough these days.


Edited by Lee Nicolle, 13 November 2014 - 22:51.


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#152 Derrwint

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Posted 14 November 2014 - 00:09

The RX-3 for 7k is funny in comparison to an RX-5, which was worth about $8,850 brand new in 1978.

 

A good RX-5 will pull about 3-5k now (nobody likes them), I dare say that RX-3 restored back to Grp C trim could pull 50-80k depending on whose there on the day.

 

Oh to have a time machine!



#153 timbo

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Posted 14 November 2014 - 03:51

And what was Gricey doing with a Maserati Merak?

If he was the Gricey we were led to believe he was, he would stick the F5000 motor in the back of it.

#154 Librules

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Posted 14 November 2014 - 09:18

Maybe the engine wouldn't fit - hence the sale (should've bought a Bora......)   Although I think you're being a bit harsh on Gricey,  I've always thought of him as a renaissance man.... and his in-car chat after the big accident blocked the track during the 'big race' back in the 80's was pure class.



#155 Derrwint

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Posted 27 November 2014 - 20:36

Some pics of the -ex Potts -ex Gates -ex Everitt -ex Lindstrom Group C RX-3.

 

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#156 branches

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Posted 03 December 2014 - 20:24

This may be slightly off topic but I am doing some research on the history of bridge porting of the Mazda rotary engine.Would anyone know or can anyone direct me to where I may find when this modification was first carried out on the Mazda rotary engine please.



#157 Derrwint

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Posted 03 December 2014 - 20:55

There was a Factory Mazda "Sports Kit" for the R100 that had bridge ported side housings. The kit had everything you needed, including inlet manifold to suit IDA style Weber carby's, exhaust system, suspension etc.

 

I did find this which talks about the Bridge Port Sports Kit.

 

"In late 1970, a series of sports kits where offered by the factory in 5 different grades. Starting at a 10% power upgrade A1 kit through to a 100% power upgrade B2 kit. The A grade kits consisted of varies bolt on goodies such as carbies, manifolds & exhausts. Whilst the B grade kits required engine porting such as the recently developed bridge port."

 

rotary_sports_kit.jpg

 

By 1972 they were using very large Bridge Ports in the RX-2's.

semi-pp_rx-2.jpg


Edited by Derrwint, 03 December 2014 - 21:09.


#158 Derrwint

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Posted 03 December 2014 - 21:18

There is a copy of the RX-3 Sport Kit Manual available online as well, this being for the twin dizzy version so pre 1974. It clearly shows diagrams and dimensions for the Bridge Porting.

 

https://docs.google....3NEYjV4Zjg/edit



#159 The Chasm

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Posted 04 December 2014 - 05:22

I clearly remember a White R100 getting sideways at the top of the Eastern Loop at Lakeside and rolling multiple times til it was a useless pile of scrap.

 

But I can't remember the driver's name ? - I think he returned to racing with an RX-3 about 6 months later.

 

I used to have an 8mm film of a Lakeside lap with a hand held camera in the passenger seat of that RX-3 without belts during private practice - I think I was 15 at the time - how silly !!!.

 

I beat RaceCam by quite a few years !.



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#160 Derrwint

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Posted 04 December 2014 - 18:54

Larry Kogge sliding through Sandown's Turn 1 in the wet. July 1981.

 

10421513_885312381502327_420832700445966



#161 Lee Nicolle

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Posted 04 December 2014 - 21:36

Larry Kogge sliding through Sandown's Turn 1 in the wet. July 1981.

 

10421513_885312381502327_420832700445966

I can remember at AIR LK sending his mate down the road to buy some standard fuel for that car. Evidently less lead helped the seals. This was early 80s before unleaded fuel became available.


Edited by Lee Nicolle, 04 December 2014 - 21:37.


#162 275 GTB-4

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Posted 04 December 2014 - 21:41

Larry Kogge sliding through Sandown's Turn 1 in the wet. July 1981.
 
10421513_885312381502327_420832700445966


Did the Kogge car have a duck tail? a problem with its boot? or is it something on the track?

#163 Derrwint

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Posted 04 December 2014 - 21:46

It was in Sports Sedans so yeah looks like a ducktail style wing. Never seen a pic of this car at that stage of life before so it would be good to find more.



#164 Derrwint

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Posted 04 December 2014 - 21:54

I can remember at AIR LK sending his mate down the road to buy some standard fuel for that car. Evidently less lead helped the seals. This was early 80s before unleaded fuel became available.

 

Not really anything to do with seals or anything mechanical, the early 13B's (pre 1985 US Spec RX7) are only 9.2:1 compression and 12A's 9.4:1, so no need for any fancy fuel, you just want something that burns quick so the less lead the better, that's why in the old days they recommended running on Standard fuel. Where you don't have a detonation problem you don't need to mask it with a slower burning fuel.

 

Even today some of the guys (the smart ones anyways!) running the RX-2's in Nc grab normal non ethanol 91 octane pump fuel where they can, just no need for anything else.



#165 Ray Bell

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Posted 04 December 2014 - 22:02

Originally posted by Derrwint
It was in Sports Sedans so yeah looks like a ducktail style wing. Never seen a pic of this car at that stage of life before so it would be good to find more.


Guard flares are another Sports Sedan giveaway, usually with the attendant wider wheels. This pic, I would suggest, shows the car with the spare wheels and wets mounted.

#166 Derrwint

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Posted 04 December 2014 - 22:16

RX-3's gained flared guards and front spoiler for Group C racing in late 1979/1980.  

 

BMoxon_Jones_Seton_Amaroo.jpg

1974-group-c-mazda-rx3.jpg

1974-group-c-mazda-rx3.jpg

1974-mazda-rx3.jpg


Edited by Derrwint, 07 December 2014 - 20:41.


#167 brucemoxon

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Posted 06 December 2014 - 10:01

Where'd you get that first photo Derrwint, the one of Barry Jones and Bo Seton at Amaroo? 'Cause it's one of mine.

 

 

 

 

Bruce Moxon



#168 Derrwint

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Posted 06 December 2014 - 11:49

Hi Bruce, it just came up in a Google image search, there were quite a few from Amaroo that looked like they were taken at a similar time as well, just had that look about them.

Do you have many RX-3 pics from that era?

Cheers
Darren

#169 275 GTB-4

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Posted 07 December 2014 - 10:24

Bruce can speak for himself, but, just because a Google search brings something up, that does not mean automatic free use or loss of copyright...


Edited by 275 GTB-4, 07 December 2014 - 10:25.


#170 brucemoxon

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Posted 07 December 2014 - 19:01

I'm okay with it, but some less-than scrupulous types have been selling prints of photos I'd shared on a forum - possibly the same on you got this from.

 

I was just wondering, really.

 

 

 

 

BM



#171 Derrwint

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Posted 07 December 2014 - 20:51

It's a shame to have to watermark images, but if people can't respect other peoples work and try to make money on-selling them then it becomes necessary.

 

Totally agree that just because something is out there in the public domain, it doesn't mean it's open slather to use it for financial gain without permission.