Jump to content
SAU Community

Tyres

giant

By giant,
in Motorsport Discussion & Builds

 Share

Recommended Posts

hrd-hr30 Grand Master

hrd-hr30

Posted
Posted

I called Craig at Hornibrook Motorsports. Doesn't look like anyone makes softs in such large sizes. I guess they figure they're for big heavy cars that need a harder tyre. If Toyo RA1's are available in that size it might be the go.

or maybe you could run slicks? the AWD turbo class doesn't really have any rules... it only exists at Mt Cotton. Otherwise, Stuart Inwood ran his GTR in Sports Cars at the Australian Hillclimb hampionship . Slicks are allowed in that class, but he was on semis.

Link to comment
https://www.sau.com.au/forums/topic/206142-tyres/#findComment-3647776
Share on other sites
Beer Baron Grand Master

Beer Baron

Posted
Posted

true, plenty of GT3 Cup Cars with lots of dunlop and michelein slicks around that will suit your size. cheap cheap! forget carrera cup though. look to prod sports. the guys we used to run with there have lots of dough and go through a set per session and will practically give them away (well compared to what they cost new).

I can't remember what sizes we used to run, but they were staggered front and rear (around 255 front and 285 rear). you could probably run a set of rears all 'round on your thing. most guys I know who buy them second hand buy fronts only as they are generally going on 9 or 9.5 inch wide wheels and the porshce rears are too wide. more left for you!

Link to comment
https://www.sau.com.au/forums/topic/206142-tyres/#findComment-3647814
Share on other sites
hrd-hr30 Grand Master

hrd-hr30

Posted
Posted
harry can't we use slick's at mnt cotton hill climb?

yes you can. the question is if they're allowed in the AWD turbo class or not. That's a class MG Car Club created themselves to get the fast modern cars out of Improved Prod and Road Registered classes to give the old bangers a chance of winning something! It doesn't exist in the CAMS manual so it really have any rules. You *should* be able to run slicks.

If they won't let you run slicks in that class, you could always run in Sports Car or Sports Sedan class. Stuart Inwood ran his GTR in Sport Cars Closed in the AHC last year, so they're definitely eligible for that category. And they are now also eligible for Sport Sedan category, both of which permit the use of full slicks.

on the RE55S, I've only used the SR compound, which i think is the hardest of their compounds. So I can't really comment on whether the Toyo is softer than the medium Bridgey. As for the Dunlops, I haven't tried them myself. Maybe a helpful tyre store would allow you to poke a durometer at a couple of new tyres? You can make one easily enough - it won't give you an actual duro reading, but will tell you which of two tyres is the softer compound.

Link to comment
https://www.sau.com.au/forums/topic/206142-tyres/#findComment-3648358
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      RB26DETT Sketchy boost mod?

      By GTSBoy · Posted

      There's restrictor pills in the stock boost control hoses. That's how they set the amount that was bled off and hence the "high" boost setting. The usual mod in the day was to remove it and send the "high" boost setting up to about 14 psi.
    • ARB26
      RB26DETT Sketchy boost mod?

      By ARB26 · Posted

      Thanks Duncan, that's the best info I've read. Furthermore after learning about the PCM programming side controlling the factory boost solenoid, the purpose of the solenoid is to "bleed" boost when pin 25 is earthed, thus allowing spring pressure in the wastegate actuator to overcome diaphragm boost pressure, thus closing or reducing the position of the wastegate flap creating more boost as the turbo is able to spin faster. It's pretty cool to see a designated Pill to do exactly this, would have liked to have seen it with a tiny filter over the end for those moments in vacuum.  The constant bleed pill has now been removed completely from the system and solenoid boost control has been restored once again.   Case closed 😂
    • GTSBoy
      Cas issue

      By GTSBoy · Posted

      The wideband reading is meaningless if it's not running. Why are you using shitty old sidefeeds on any engine, let alone a Neo? What manifold and fuel rail are you using to achieve that? Beyond that, can't help you with AEM stuff as I've never been their ECU/CAS combo.
    • Duncan
      RB26DETT Sketchy boost mod?

      By Duncan · Posted

      Manual boost controllers (where a little of the boost was bled off) were quite common back in the day, because they were cheap and easy. Generally they had a manual adjustment screw rather than being fixed like yours. Down side is they always bleed boost, not just when you want them to so an electronic boost controller that uses a solenoid will have less lag.
    • nash47
      Cas issue

      By nash47 · Posted

      Hello , im new here and i have A31 home build  RB25det neo stock eng / turbo  aem ems 2 blue connector  aem 3.5 map aem cas disk aem wideband connected to ecu  355 lph pump 550 nismo yellow injectors side feed aftermarket regulator  and won’t start with base aem tuner basic tune eventually flipped cas 180 degree so it triggers on correct stroke not in exhaust cycle  Now it won’t start Wideband reads 10 and 11 at lowest fuel setting  and will share calibrations soon for aem tuner i think something is wrong in aem tuner    please if you have any information, am very grateful         
×
×
  • Create New...