Mazda RX7 S4s & S5s Discussion

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Ivan Mikac RX7

Postby rotorboi » Sat Jun 07, 2008 8:15 pm

So the Centreline car is a different one to Luke Chambers yellow RX7?


Yes, Centreline car is/was still owned by Chris Muscat, Luke's car is ex-Rod Newbound car which was a 'sister' car i think, Newbound had a pretty nasty accident at Calder when he ran it, went off at the final corner iirc. Wasnt as quick as the Centreline car but still very quick.
As far as I know Luke Youlden driving the Centreline car still has the Class B Sports Sedan LR at Phillip Island, 1:34 I think a few years ago.

13b = 2.6 i think and 20b = 3.33 again 'i think'


Sounds about right with me, Luke Chambers enters his car with 3300cc (20B NA) and Graeme Gilliland 2600cc (13B NA) in Vic State.
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Ivan Mikac RX7

Postby Phast Phil » Sun Jun 08, 2008 8:56 am

And not one rotary team has ever officially complained about the min weight. 900 kilos inc driver is very light....maybe too light to actually achieve.
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Ivan Mikac RX7

Postby 2002 turbo » Sun Jun 08, 2008 8:24 pm

With a 13B weight like that is possible with the driver in the car and I can recall there was talk when Ivan's car first rocked up at the Truck series at Oran Park in 1995 that he was quite a bit lighter then that figure!
Some weight numbers were rumoured but I suppose when you think about how much power a naturally aspirated 13B motor could make (I am guessing 330-350 bhp) the car must have been pretty bloody light to do the times that he did around there. Of course the car handled well and was driven hard too which also helps!
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Ivan Mikac RX7

Postby 2002 turbo » Sun Jun 08, 2008 8:34 pm

Thanks for the details rotorboi, there are so many of those RX7s it is hard to keep track of them.

I remember reading about the Centreline RX7 years ago, it had a 13G 3 rotor engine
( not a 20B ) and some custom made Mazda based 6 speed gearbox in it but I think they got rid of that and ended up putting a Holinger in it.
Another good car that should be out there to help make up the field, or have a turbo fitted and mix it up the front like Trent Young does now!
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Ivan Mikac RX7

Postby rotorboi » Wed Jun 11, 2008 8:01 pm

No problem 2002Turbo, IIRC Muscat retired the car when he decided to stop racing which was a shame. I loved that car. Plenty of interesting cars out there but they seem to be in storage/garages etc. Anyone know what happened to the ex-Rotary Shop Series 4/5 bodied 20B RX7 that came to Victoria briefly before being sold off? Where did it end up?
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Ivan Mikac RX7

Postby jd yort » Mon Jul 21, 2008 2:21 pm

I asked about the S4 / S5 RX7's on another forum a while back in terms of how many etc. It is very confusing regarding how many were built and by whom. Also around what actually occured with the Carling Sr20 powered S4 and the muilti coloured car raced by Terry Shiels. From what I was told both may have been destroyed. One by fire at Eastern Creek and the other in an accident at Mallala. No one seems to know how many were built by Dick Ward centred around the Indonesian series or by Colour Scan. Hopefully RotorBoi and 20B can clear it up a bit more.


This is Carling orginal car which I am not sure where it ended up.




I think these are all the same car. Shiels (John Keen owned) car which then was owned by Barrett and then sold on maybe even to Carling. Not sure if this car was then destroyed at Mallala by Carling or caught fire at E'Creek never to been seen again.




This is Graeme Gilliand's car which I think is orange now. It may have been raced by Sheils.




These are all Richard Catchloves car which is a Go Gear built car. Not sure of its previous history or who owns it now??




Are these two one and the same which is the Simon Longhurst car now?? I am pretty sure there was two cars going around with Cosworth power, one of which was a colourscan built car.





I thought there was two CentreLine cars. Luke Chambers owned car and the Chris Muscat car that was raced by Luke Youlden at one point.




Then there was the IMSA spec car imported by Mark Williams which may be Schwenke's car now and may also be this one that was for the sale a while ago. Or are all these separate cars.




McPherson car was a Go-Gear car but not sure of its history but it may be the car that Bill Emeny had for sale recently.




Bill Emeny also had a car for sale not that long ago.




Pretty sure Mikac's was a Go-Gear car too and I read that it is different to Polovic's car despite them looking very similar.




Polovics car





I thought there was 2 ColourScan Rx7's built. The car that Trent races and one other. Not sure if these are one and the same or not though. John English ran one in the early 90's that was a Colourscan car. One of them may have had a V8 in it at some stage too.




Norm Stokes car. I think he still owns it but its history??.




Not sure who owned this car, it may be Norm Stokes by the colour scheme


Not sure which is now Dick Wards original car.
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Postby boost'n 20b » Mon Jul 21, 2008 6:17 pm

hey it's trent young.our car is 1 of 2 colourscan cars.ours did have a turbo cosworth in it originally and split a bore so put a chev in it.wayne parks used to drive it.the second car we are picking up to finish it off for shane cruickshank and it still has a turbo cosworth.hasn't been on track for over 10 years since been crashed at lakeside.both ivans and poloviks cars are wards cars as been told by there engine builder.the blue,yellow and white mark williams car a guy near me owned and has now sold to guy in qld but is in shed.mark williams owned my car for awhile as well.
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Ivan Mikac RX7

Postby 2002 turbo » Mon Jul 21, 2008 10:06 pm

With so many RX7s its hard not to get confused!! I'll try my best to fill in the blanks on what I can figure out with the cars that were based in NSW.

Also around what actually occured with the Carling Sr20 powered S4 and the muilti coloured car raced by Terry Shiels. From what I was told both may have been destroyed. One by fire at Eastern Creek and the other in an accident at Mallala.

As I understand it was the same car powered by a Nissan FJ20 turbo engine.
If I remember correctly Terry Shiel debuted the car (it was owned by John Keen) at an AMSCAR meet run by the ARDC at Eastern Creek, results of the race are here:
Sport Sedan Race Eastern Creek 1997

Sheil also raced at the final round of the 1997 O'Brien Series Aluminum series where he ran pretty well. The following year in 1998 Keith Carling raced the car (now painted yellow) in the National Championship until he crashed at Malalla and pretty much wrote it off, that was the end of that car.

This is Carling orginal car which I am not sure where it ended up.


Yeah that one is a mystery, remember seeing it in the early 1990s at Amaroo but not much more after that unless it resurfaced as another car???


I think these are all the same car. Shiels (John Keen owned) car which then was owned by Barrett and then sold on maybe even to Carling. Not sure if this car was then destroyed at Mallala by Carling or caught fire at E'Creek never to been seen again.



Those photos are all of the same car but Sheil's and Barrett's are two different cars. It's made even more confusing because they both at one stage although it was years apart had a near identical paint scheme!
Anyway if you look at the results I posted in the link from the race in 1997 at Eastern Creek the two cars actually ran in the same race. Another thing to consider is that Sheil's car was right hand drive and Barrett's was left hand drive.
Also for some reason I think John Keen originally owned Barrett's car and had Terry Sheil drive it because if you look at the Eastern Creek website for lap records you see:
2001cc-3000cc Terry Shiel Mazda RX-7 1:36.4200 29/09/91.

As far as I can remember I first saw Paul Barrett's car run at Oran Park at a NSWRRC meeting in mid 1992, I am guessing that pic you have posted of it is more then likely at the Eastern Creek round of the ASSC in 1992? I also heard it had a bad fire at Eastern Creek and as such has never been at the track again.

Are these two one and the same which is the Simon Longhurst car now??


Yes this car is the same car that is now run by Simon Longhurst. It was first run and owned by Llynden Reithmuller and first raced about 12 years ago with the Endless signage.
I am pretty sure there was two cars going around with Cosworth power, one of which was a colourscan built car.
Yeah that is correct one of the Colurscan cars also had a Sierra turbo motor, the other was the one now raced by Longhurst.


Then there was the IMSA spec car imported by Mark Williams which may be Schwenke's car now and may also be this one that was for the sale a while ago. Or are all these separate cars.


Mark William's car and Schwenke's car are two different ones. I've never seen Williams car only read about it in a magazine years ago (wasn't it a 3 rotor turbo?). I believe Schwenke's car originated out of Melbourne, was first naturally aspirated but now has a 13B turbo motor and runs it in the NSW state series.

Pretty sure Mikac's was a Go-Gear car too and I read that it is different to Polovic's car despite them looking very similar.



Yep Mikac's is a Go Gear car and was the first east coast based one to give the V8s a real scare. Polovic's as far as I can tell is near identical although it runs a 12A turbo where as Mikacs has a 20B PP, they both run Hewlands, similair suspension setups etc

Norm Stokes car. I think he still owns it but its history??.



Not sure who owned this car, it may be Norm Stokes by the colour scheme

The 3 above pics are all of the Norm Stokes car which he had built in the mid 1990s, not sure who did it though. Has had the funny pink and green paint for years but now it is painted blue, he still runs it at NSW state series every now and then.
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Ivan Mikac RX7

Postby roads » Mon Jul 21, 2008 10:07 pm

Bill Emeny's car is now in Perth owned buy Brendan at K-tec Autos.
Dick Ward also hase his original 2 rotor car.
I think the triple rotor is owned buy Kim Ledger in Perth also.
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Ivan Mikac RX7

Postby MrBoost » Mon Jul 21, 2008 10:10 pm

2002 turbo you remember too much s***. i love it!
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