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Old 06-06-06, 09:20 AM
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Bathurst limited edition

Just wanted to know if anyone whos whats so different about the 1996 RX-7 Bathhurst compared to other RX-7's of the same year?
Old 06-06-06, 10:05 AM
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Its just an option package. Its not faster.
Old 06-06-06, 01:07 PM
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what sort of extras do you get. i heard that it was resticted to 112mph, is that true or is that the same for all rx7's from japan?
Old 06-06-06, 01:51 PM
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I severely doubt that. Japanese cars are restricted to 280hp.
Old 06-06-06, 02:44 PM
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Yes the Japanese cars are restricted to 180kph. You will have to get a power fc or other aftermarket ecu's to get past the restricted top speed.

R.K.
Old 06-06-06, 08:47 PM
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early bathurst (in fact, every version before late 00) are actually optioned down, not up. They are a bargain basement spec. Don't let the name fool you.

in 96...

price of a base-spec (RB): 3.2million yen
price of a bathurst: 3.4million yen
price of a RS (sports version): 3.7million yen
price of a touring X (luxury): 3.8million yen
price of an RZ (top spec): 4million yen
Old 06-07-06, 05:59 AM
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it is funny how the cars got called "Bathurst Spec",
In Australia in 1992 they ran the first production class 12 hour race at a street circuit at Bathurst,(a couple hours west of Sydney) and Mazda Australia's RX7 won.
The 12 hour race continued to be run for the next 2 years at Bathurst and Mazda Australia won both of those as well. Mazda Japan were very impressed with these results they called some of thier models Bathurst Spec, even though the cars were not the same as the Australian cars.

After the 3 years at Bathurst the 12 hour race was then moved to Eastern Creek in Sydney for one more year and Mazda won again, and there has not been another 12 hour race in Australia.
Mazda Australia built a special RX7 called an RX7-SP to compete against the Porsche 911RSCS for the Eastern Creek 12 Hour race and Mazda Australia released a limited number of these RX7-SP's to the public.
Old 06-07-06, 06:04 AM
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Originally Posted by carbon man
it is funny how the cars got called "Bathurst Spec",
In Australia in 1992 they ran the first production class 12 hour race at a street circuit at Bathurst,(a couple hours west of Sydney) and Mazda Australia's RX7 won.
The 12 hour race continued to be run for the next 2 years at Bathurst and Mazda Australia won both of those as well. Mazda Japan were very impressed with these results they called some of thier models Bathurst Spec, even though the cars were not the same as the Australian cars.

After the 3 years at Bathurst the 12 hour race was then moved to Eastern Creek in Sydney for one more year and Mazda won again, and there has not been another 12 hour race in Australia.
Mazda Australia built a special RX7 called an RX7-SP to compete against the Porsche 911RSCS for the Eastern Creek 12 Hour race and Mazda Australia released a limited number of these RX7-SP's to the public.
never knew that, always wondered about the name "bathrust". Thanks for the info!
Old 06-07-06, 06:45 AM
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Well. my friend has a Bathurst R and at least the meters are white compared to the usual black. Also a boost meter is included and carbon fibre panels(option perhaps).
Old 06-07-06, 08:08 AM
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Originally Posted by samiralfey
Well. my friend has a Bathurst R and at least the meters are white compared to the usual black. Also a boost meter is included and carbon fibre panels(option perhaps).

That would be series 8 version (2000/2001 ?) of "Bathurst R" .Comes with a sticker on the B pillar just next to the door handle "BATHURST with R logo in the middle of the word Bathurst", CF stick-on covers, gearknob and handbrake handle, different velour pattern on the seats. Also had special Yellow colour. Not CYM but rather like the mazda6 yellow.

I might still be wrong...
Old 06-07-06, 08:40 AM
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Originally Posted by kuning
That would be series 8 version (2000/2001 ?) of "Bathurst R" .Comes with a sticker on the B pillar just next to the door handle "BATHURST with R logo in the middle of the word Bathurst", CF stick-on covers, gearknob and handbrake handle, different velour pattern on the seats. Also had special Yellow colour. Not CYM but rather like the mazda6 yellow.

I might still be wrong...
Yes, I believe that his car is a 2001 model. I don't know about earlier Bathursts but propably nothing big, just some extra bling.
Old 06-07-06, 07:03 PM
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I believe carbon man knows all of that because he actually made the parts for the car that competed in the race. Or he is a Mazda fan like most of us here.
Old 06-07-06, 09:20 PM
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thanks for all the replies, much appreciated. So are there any mechanical differences between the early bathurst (1996) and RS's or RZ's of the same year? Are they the same engines and power output?
Old 06-07-06, 10:25 PM
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In 96 the power output and engine configuration was identical across the range. The significant differences with the RS and RZ are in the brake, trim, rim and suspension departments.

I have the promotional ad for the 96 bathurst somewhere....



The 01-02 r bathurst r, as I hinted above, is the only 'good' bathurst version - largely based on the type-r - has the top power output and a nice selection of options.
Old 06-07-06, 11:29 PM
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Get the book called "RX-7 Mazda's Rotary Engine Sportscar" by Brian Long. It has all the history of the RX-7 including the Bathhurst. The Bathhurst came with upgraded turbos I believe giving it higher HP.
Old 06-08-06, 12:18 AM
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Please don't perpetuate misinformation. Go back and have another look at the book.

The car you are referring to is the australian race FD (the 'SP') which had different turbos.

The original poster is talking about a (JDM) bathurst model FD. It was called the bathurst to recognize the achievements of the SP.
Old 06-08-06, 11:33 AM
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DaiOni, when someone says Bathurst, I usually think of the limited production run (25 or so IIRC) that Mazda Australia only released. Remember this post of yours?

Originally Posted by DaiOni
It was a Mazda project, but they used a variety of aftermarket sources for some of the goodies. As above, the driving motive behind the project was homologation (specifically, to get an edge in the Bathurst 12hr endurance races).

from rx7.net.nz -

"The list of exact changes made to convert a standard Australian-spec twin-turbo RX-7 to 'SP' specs numbers 60. Most notable is the front nose cone which has a greatly increased air intake (necessitating the extra strength of the carbon fibre) and rear spoiler; both made from carbon fibre, they produce noticeably more downforce with the obvious lighter-than-plastic weight advantage. 'We tested the rear spoiler in three different guises out here (Eastern Creek),' informed Garry Waldon: no spoiler at all, the factory spoiler and the high mount version - which won favour. 'The small standard spoiler proved it was faster around Eastern Creek than no spoiler at all but the high-mount was around six-to-seven-tenths quicker again.' The notorious Turn One sweeper is where the rear spoiler benefits most, raising the car's corner speed 5km/h 'You can really feel the increased downforce around here," added Waldon who hustled through the sweeper during the race consistently over 200 km/h.
More carbon fibre is used under the lightweight and vented aluminum bonnet: the Mazda-motif air-box with ram-air ducting and pipework and, most notably visible from under the rear, the huge carbon-fibre fuel tank which boosts fuel capacity (and the distance between fuel stops) from 76 to 110 litres. The SP also gets stainless steel heat-shielding between the fuel tank and the revised from the turbo free-flowing exhaust system.
Fuel tank capacity, in the 12 Hour, proved to be a contributing factor to the SP's success with longer track sessions. Horsley's wild card was his well-publicized 'cool fuel'. Stored in large alloy tanks at the track, the 100 octane unleaded was chilled with dry ice to a temperature of around 5 deg C. When the 110 or so litres of fuel was dumped in at each stop, the almost freezing fuel lowered combustion temperatures noticeably for the entire session - a vital parameter with heat-stressed rotaries and turbos ensuring thermal loading was kept as low as possible.
Mazda's other trump card was its brake pad consumption. Normally the forte of the smaller and lighter cars, the Mazda SP's larger diameter and thickness rotor and larger four-spot front calipers miraculously made it through the 12 hours of punishment on one single set of Endless brake pads. According to Horsley, at the end of the race the pads were removed and "still had 'enough' meat on them". Improving the power-to-weight ratio was a prime concern with the SP. Weight was further reduced with a pair of Recaro's SP-A seats weighing in at 2.5 kg each!
Its kilowatt output went from 176kW for the standard RX-7, to 204kW for the SP, and around 240kW for the race car. The big additions came from the exhaust system and the three times more efficient than standard air-to-air intercooler - turbo modification extended to only minor seal changes. The road car puts out a whopping 357Nm of torque (versus the standard car's 294) and it's immediately noticeable on the road. The days of rotaries having no torque are long gone - fifth gear at 60km/h pulls similarly to an average family sedan in second.
To take full advantage of the improved power output, the diff ratio was changed from a 4.1 to a 4.3 aiding acceleration while still stretching the car's top speed I 0 km/h beyond the standard car to 260 km/h.
Power windows and mirrors, electrically-operated sunroof, cruise control, CD player, ABS, driver's side airbag and optional air conditioning.
All things, Mazda proudly proclaims, the Porsche 91 1 RS CS is missing and all things (apart from the air-bag and A/C) were taken along for the 12 hour ride. The Porsches also miss out on a rear seat, carpet and hoodlining, although at 1270kg, it would need to. The RX-7 SP tips the scales at 1218kg, another 92kg lighter than the standard model.
Wheel size on the SP has been increased one-inch in diameter to 17 front and rear while the tyres have also grown to 235/45 front and 255/40 rear - not to mention the proudly-Australian kangaroo centre caps.
Sales of the 25 SPs spiked in the few days after the 12 Hour, with all 25 being snapped up quick smart, prompting Mazda to produce another 10."

So 35 in total. There was also an sp2 prototype made in 98 or 99 - but it never made the showroom (though someone re-assembled it - and it's on the road in oz).

I thought the brakes were the same as the updated RZ (could well be wrong - but I'm pretty sure the rotor dia. is the same).

The most popular SP parts you see these days are the intake (very nice - but useless with a fmic or v-mount), the ic, and the bonnet(s).

Also, the exhaust parts are available through SMB, who were part of the project(s). A search on this site should bring up their URL.

Mazda japan had a very similar prototype called the M2 - http://asmic.com/collect/re_co_06.htm
Which also came out in 95. There's rumoured to be 2 in existence. They were supposedly an extension of the RZ - a more serious version for those who wanted to track their FDs.
Oh and I gotta plug in that I have a few sets of the super rare OEM Bathurst coilovers made by Showa for the FD
Old 06-08-06, 11:39 AM
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Originally Posted by DaiOni
Please don't perpetuate misinformation. Go back and have another look at the book.

The car you are referring to is the australian race FD (the 'SP') which had different turbos.

The original poster is talking about a (JDM) bathurst model FD. It was called the bathurst to recognize the achievements of the SP.
Thanks for pointing that out. The JDM Bathurst model and Australian SP1 and almost SP2 are different animals. Even the SP1 was a street version of the Bathurst racer.

Go to this site for Japanense model line up and SP1, SP race car and SP2: http://www.rx7.net.nz/rx7netindex.html
Old 06-08-06, 10:59 PM
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Originally Posted by DaiOni
Please don't perpetuate misinformation. Go back and have another look at the book.

The car you are referring to is the australian race FD (the 'SP') which had different turbos.

The original poster is talking about a (JDM) bathurst model FD. It was called the bathurst to recognize the achievements of the SP.
Ok here is the straight dope after re-reading a section in the book. "In April 1994, Mazda had won the Bathurst 12 hour Race for the third year in successsion. To commemorate the occasion, in August a limited edition Type R-II 'Bathurst' model was launched in Japan. Based on the R-II two-seater, it featured special decals and the blue tinted glass. 350 were built, priced at a very reasonable 2,998,000 yen each."

Ok then in 1998 there was the 1998 type RB Bathurst which featured: "subtle refinements in the turbocharger as well as in the exhaust, lubrication and cooling systems." New BHP was reported at 280.

So there I was right. Don't mess with the "Silverstone."

Last edited by Silverstone; 06-08-06 at 11:08 PM.
Old 06-08-06, 11:03 PM
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The Japanese Bathurst is COMPLETELY DIFFERENT than the Australian SP Bathurst, of which only a handful were made (35 total).
Old 06-09-06, 12:49 AM
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exactly what I said before - totally different car. I'll say it again - the SP raced at bathurst (with a homologated special sold in australian showrooms), the JDM 'Bathurst' cars were named in honor of the win. The 'very reasonable' price is because they were poorly equipped/optioned - they certainly didn't have better turbos back in 96.

Also - that last paragraph is totally wrong - the RB bathurst is part of the 96-98 production run (version IV) - and there were no 280ps turbos until version V (dec 98 - and there were no bathursts in that production run).

With the JDM bathurst FDs, the name gives hints as to what mainstream production FD they are based on, ie: RB bathurst is based on an RB, R Bathurst X is a hyrbid of parts from an R and an X, etc
Old 06-09-06, 12:51 AM
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....and RB FDs _never_ had upgraded turbos - they are base spec.
Old 06-09-06, 10:26 AM
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Originally Posted by DaiOni
....and RB FDs _never_ had upgraded turbos - they are base spec.
Take it up with Brian Long. I'm just quoting his book.
Old 06-09-06, 01:50 PM
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Again this site will point out the JDM models, prices quantity produced and major changes between models as well as about the Austriaian modified SP models

http://www.rx7.net.nz/rx7netindex.html

click on "FD Models & Variations"

five JDM FD Bathurst models:

Sept 1994 R-II Bathurst 350 made
Feb 1995 R Bathurst 500 made
July 1995 R Bathurst X 777 made
Jan 1997 RB Bathurst 700 made
Sept 2001 R Bathurst R 300 made

one Mazda Motorsport Australian model:

SP based on 1995 FD 35 made (25 in first run); in 204kW street and 240kW race power versions
SP2 was to be introduced in 1998 based on '96 version of FD but as Mazda pulled this version of FD from introduction in Australian market, so no SP2's were produced other than prototype

Last edited by Julian; 06-09-06 at 02:05 PM.
Old 06-09-06, 05:56 PM
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DaiOni - Where did those BIG stock twins come from? The SP? I can dig up a pic if no onehas one handy.


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