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Hub Caps or Dress rims?
Poll ended at Tue Jul 16, 2013 5:48 am
Hub Caps 27%  27%  [ 9 ]
Dress rims, original bolt and centre caps 73%  73%  [ 24 ]
Total votes : 33
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 Post subject: Re: Rx3 Sedan build
PostPosted: Sun Jun 08, 2014 5:00 am 

Joined: Fri Apr 22, 2011 4:31 pm
Posts: 97
Location: sydney NSW
215/50/13 and 235/45/13 are 21.3 inch dia or 541mm

205/60/13 is 22.7 or 576

205/50/15 is 23.1 or 586

I am running 185/70/13 23.2 or 589

So that's a lot of stupid information


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 Post subject: Re: Rx3 Sedan build
PostPosted: Sun Jun 08, 2014 6:00 am 

Joined: Wed Mar 11, 2009 6:09 pm
Posts: 596
Location: Australia
Things are getting a little tougher for people using older small diameter rims. I had to import the tyres I'm using now to clear the front panels which they do by literally mm's. The idea of changing them was so I could use something more easily available.

I've seen some pretty cool older smaller rims recently but those Simmons would have to be on top of my list, followed by enki's that Selectmaz used on their old Rx3 red race car that was featured in Fast Fours issue 1, followed by some old Work Equips. I've found some rare stuff in my time but those Simmons would have to be ultra rare. Any how nice choice, also noticed the small diameter v4's in the background, haven't seen those in years..... :tu:

I'll stick with what I have until everything else is sorted. The meet is the first Sunday every month from 730 to 1030 I believe. I'll let you know a week out.

Dazz I used to ride an old road race bike up that road.... Seen a few stacks on that road over the years. Getting out of my bikes I think was the healthist thing I've ever done ! You don't see many cars on that road, haven't been there for a good 15 to 20 years.


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 Post subject: Re: Rx3 Sedan build
PostPosted: Sun Jun 08, 2014 3:11 pm 

Joined: Thu Oct 01, 2009 8:00 pm
Posts: 32
Location: Australia
For the authentic Group C RX-3 Sedan look, you need the 13" V4 style on the front with the low profile tyres, and the 8 spokes on the rear, lucky bugger you have both :twisted:

Image


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 Post subject: Re: Rx3 Sedan build
PostPosted: Sun Jun 08, 2014 3:26 pm 

Joined: Thu Oct 01, 2009 8:00 pm
Posts: 32
Location: Australia
Speaking of tyre diameters, you might find this interesting, written by Ross Burbidge, who races the ex Don Holland RX-3 at Bathurst with Terry Shiel.

"The second advantage we enjoyed over Barry and all the other Rx-3s were tyres! Don had several years earlier determined that gearing the Mazda tall for Conrod Straight would negate any disadvantage up the mountain. If you look at any pics of our car at Bathurst you will soon spot the difference. We ran rear Dunlops with a 550mm profile (at other tracks we used 500 or 525). These 550 were special order from Dunlop in Japan and only available in limited numbers. I'm unsure whether any other RX-3 drivers ever tried and failed to obtain them. Scary to think that, thanks to them, we were travelling almost 130mph before pulling up at Murray's Corner with only 9" vented dics with 4-pots on the front & Mazda 808-sized drum brakes on the rear!"


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 Post subject: Re: Rx3 Sedan build
PostPosted: Tue Jun 10, 2014 4:45 am 

Joined: Fri Apr 22, 2011 4:31 pm
Posts: 97
Location: sydney NSW
Yes tyre dia can make a big difference. I have 525 on the rear of my race car and they are no good for down the main straight at EC with a 4.4.

Next is what width. to get some new inners or outers it costs the same. So do you squeeze the biggest rim you can under the car knowing the tyres might be a problem or stick with 7's knowing 205/60s will always be there


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 Post subject: Re: Rx3 Sedan build
PostPosted: Tue Jun 10, 2014 5:36 am 
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Joined: Mon Mar 15, 2010 4:37 am
Posts: 178
Location: Ballarat
If you are sticking with 13s then be very careful. The last time I checked - early last year, there is only one manufacturer still making
"off-the-shelf, road " 205/60 x 13s and these are GT Radials. A lot of the old, low profile, wide tyre sizes we grew up with - because everything
had 13s and 14s back then, are no longer available. Finding a 13" tyre in a 50 or 45 profile that is not a semi slick and needs to be imported - good luck! :(

We are being forced to fit larger rims on our cars to get the tyre sizes we want! :evil:


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 Post subject: Re: Rx3 Sedan build
PostPosted: Wed Jun 11, 2014 12:35 am 

Joined: Thu Oct 01, 2009 8:00 pm
Posts: 32
Location: Australia
I still see the Dunlop SP Sport advertised here and there in 215/50/13.
http://www.ebay.com.au/itm/2x-215-50-13 ... 1258874469

Avon make a street legal 13" tyre which looks tempting too.

http://www.gordonleven.com/motorsport/a ... tyre=cr500

CR500 Road Legal Tyres:
175/55 R13 20.75" 527mm 7.24"/184mm wide in section, 6.34"/161mm tread, 604 revs per km.
205/55 R13 21.8" 554mm 9.06"/230mm wide in section, 7.32"/186mm tread, 575 revs per km.
245/50 R13 22.4" 569mm 9.92"/252mm wide in section, 9.13"/232mm tread, 559 revs per km.

205/55/13 should fit well on the front, and they'd be a hell of a squeeze, but 245/50's would look tough as hell under the rear :evil:


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 Post subject: Re: Rx3 Sedan build
PostPosted: Sun Jun 15, 2014 9:22 pm 

Joined: Fri Nov 12, 2010 6:13 am
Posts: 91
Location: Melbourne Australia
Looks fantastic mate well done :D

_________________
REgards, Mo Melville


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 Post subject: Re: Rx3 Sedan build
PostPosted: Fri Jun 20, 2014 4:46 am 
JNC Enthusiast

Joined: Mon Jun 08, 2009 9:26 pm
Posts: 787
Location: Melbourne, Australia
Say no to Simmons B45's. Such a horrible wheel!

With tyres, if you need to import some, check the price of importing them from the UK - sometimes they'll be cheaper freight wise than from the USA, even if the initial purchase price is more. Also, ask around some Mini workshops. Some of the mini nutters run wide 13's. I think Sime did some pretty wide rubber a couple of years back too.

_________________
occasional blog: http://ewokracing.tumblr.com

Brought to you by me as I search Alta Vista for Geocities webpages using Netscape Navigator while listening to Jam & Spoon.


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 Post subject: Re: Rx3 Sedan build
PostPosted: Mon Jul 21, 2014 3:00 am 

Joined: Fri Apr 22, 2011 4:31 pm
Posts: 97
Location: sydney NSW
Been slow with the injection, car has been off the road for 3 weeks and I hate it.
Manifold, Throttle body and linkage done. Fuel lines, regulator and pumps done. Just need to wire up the coils, sensors and injectors.
Image
Image
Image
Image


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 Post subject: Re: Rx3 Sedan build
PostPosted: Tue Jul 22, 2014 8:10 pm 

Joined: Wed Mar 11, 2009 6:09 pm
Posts: 596
Location: Australia
Is that one of the new age style throttle bodies that also contains an ECU within the throttle body ? A few US companies seem to be going that way now ie Holley, MSD.... probably others as well

Smart looking setup either way.


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 Post subject: Re: Rx3 Sedan build
PostPosted: Wed Jul 23, 2014 8:05 pm 

Joined: Tue Sep 27, 2011 4:15 am
Posts: 324
Location: Adelaide
I like that throttle body set up with the air cleaner mods, little beast has all the bells n whistles yet looking stock, well played. :tu:


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 Post subject: Re: Rx3 Sedan build
PostPosted: Thu Jul 24, 2014 3:58 am 

Joined: Fri Apr 22, 2011 4:31 pm
Posts: 97
Location: sydney NSW
It's an Xtreame Rotaries throttle body on a cut down Racingbeat manifold. I looked at those Holley/Edelbrock set ups not sure on the self tuning ones with a Rotary.

I am spewing they bought out the Black nylon hose just after I got the hoses, that would have made it a bit more Factory. I have finished all the mechanical stuff, now to the wiring. oh still got to adapt that stock filter.


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