Jump to content
SAU Community

Recommended Posts

It doesn't really matter what's going around the track cause it's all entertaining :) Even the sound of an Alfa GTV climbing out of a corner with it's carby throat's wide open or the thump of the ol XD....... Sweet !

IMHO, these are race "CARS" ! Unlike those things that "look" like cars that race now days :P

I'm with ya mate!

I went to my first historics at Sandown last year, and it was a top experience. Sensory overload!

  • Replies 142
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

Light years difference in the cages and the way the suspension is set up...they spend scary amounts on shocks these days.

So Terry has fixed the ol RB20? Be good to see the cars out running around...is there a chance that both Sydney R31s will be coming down?

Ok so the cages are different but surely quality of cages these days cant make the car that much more ridgid.

Going by the smack that everyone is talking in here, u could put a 2000 onwards cage and shocks in a gtr and hose the gibson car.

somehow i dont think so...

Ok so the cages are different but surely quality of cages these days cant make the car that much more ridgid.

Going by the smack that everyone is talking in here, u could put a 2000 onwards cage and shocks in a gtr and hose the gibson car.

somehow i dont think so...

You would hose it the Gibson car. Remember back then you had Yoko fighting Bridgestone fighting Dunlop. So tyre development was helping the cars. These days with control tyres you are not going to get the tyre development.

Imagine a GTR with stiffer chassis so they can tune the better shocks to hold the road better and get more out of tyres that are much better then what they ran on in the day (Assuming the tyre design is suitable for the car)

On top of that you now have turbo technology that would allow them to run higher boost without bearing failure (should the rules permit more boost) and at a minumum more effecient turbos and ECUs.

I think there would be a few things that would add up to meaning that if you built a Grp A GTR today with what current practices and technologies they would be quicker.

Think about it, they only have to be half a second per lap quicker to win by 20seconds in a typical race...thats a killing

...and do we know for sure about the 3 R31s? I will confirm this weekend if the Vic car is to be run. I cant see him running it if he hasnt given a shakedown at Calder.

You would hose it the Gibson car. Remember back then you had Yoko fighting Bridgestone fighting Dunlop. So tyre development was helping the cars. These days with control tyres you are nto goignto get the tyre development.

Imagine a GTR with stiffer chassis so theey can tune the better shock to hold the road better and get more out of tyres that are much better then what they ran on in the day (Assumign the tyre design is suitable for the car)

On top of that you now have turbo technology that would allow them to run higher boost without bearing failure (shoudl the rules permit more boost) and at a minumum more effecient turbos and ECUs.

I think there would be a few things that would add up to meaning that if you built a Grp A GTR today with what current practices and technology are availabel they would be quicker.

Think about it, they only have to be half a second per lap quicker to win by 20seconds in a typical race...thats a killing

...and do we know for sure about the 3 R31s? I will confirm this weekend if the Vic car is to be run. I cant see him running it if he hasnt given a shakedown at Calder.

Cheers Roy,

going by these comments and others in the thread it seems as though u could make a gtr these days with the same peak power because everything else would be so much better u could put non slick tyres on it and still be faster

Now that would be cool.

I think a lot of the GTRs getting around Vic have similar power to the Winfield car. Difference is in the fact that they still typically run performance street suspension, not competition suspension and the weights and chassis rigidity of the cars are not as good.

And no disrespect to the owners but i think they will all concede they are 1-2 seconds off what a professional driver would get out of the cars.

That all said there are GTRs doing 1:18-19s at Sandown on road rubber and full weight and 1:30 flat at Winton and 1:42s at PI. So they are BS quick considering

SK, they are nice pics, but you'd have to admit, there's nothing like seeing it in the flesh ;)

I've spent so much time just looking over this car, admiring the craftsmanship and attention to detail. And as good as it is from the top, the underside is just as amazing ( which I think you've seen from memory ? ). It's funny though, how many people rock up and say it's much smaller than they expected :rant:

2630GTS, you have to remember what this car was built for and what was available / allowed at the time. :no: I would LOVE to see what Fred Gibson & his crew would build with today's parts ( and a full Nissan factory budget ). Could you imagine his take on the R34 for an attack on Bathurst :yes:

Roy, I'll talk to Terry today and confirm the Sydney cars.

I heard that when a a V8 supercar is built the test how much twist the chassis has by using XX amount of force to make a 1 degree twist, after 12 months it is tested again and surpirsingly it takes something like 1/3 less force to make that 1 degree change.

Hence a 15-16 y/o care probably has a HEAP less rigidity.

im no expert on the situation, thats just what I was told by a guy who would know.

None the less I love the old Gibson GTRs and they will always be a favorite car to me.

I went to my first historics at Sandown last year, and it was a top experience. Sensory overload!

I used to go and watch them when they were cutting edge touring cars, not historics. And yeah, it was a spectacle.

Quite a sight to see a Volvo 240GT two wheeling around the esses at Surfers Paradise

Great to see an M3 take the GTR under brakes into Hungry Corner at Lakeside

A bit deflating to see the relatively underpowered but pretty HR31 get belted by Sierra RS500s. There was only ever a max (that I can recall 3 HR31s running - two Peter Jackson Racing, and Murray Carter as a privateer)

And a lesson in engineering superiority also to see the GTR absolutely trounce everything off the line and then pretty much control race pace. Fast, professional, everything they should be, but sadly never hit the mark for aural entertainment like a V8.

Are the Group-A GT-Rs like 1200kg? Or something like that. Under 1300kg's if I remember reading somewhere.

I'd have to go back a bit to remember, but I believe on introduction they were over 1300kg - engine equivalence factor put them in the same weight class as the destroked 4987cc Commodore. Then they were ballasted and de-boosted to nobble the advantage. I believe that come Bathurst 92 they were weighing 1500kg and suffering brake problems as a result.

A bit deflating to see the relatively underpowered but pretty HR31 get belted by Sierra RS500s. There was only ever a max (that I can recall 3 HR31s running - two Peter Jackson Racing, and Murray Carter as a privateer)

Hmm, maybe my memory is playing tricks on me, but I don't remember Murray Carter ever driving an HR31. I thought it was a DR30? Chris Lambden (Not sure of spelling) had an HR31 in Beaurepaires (Spelling not getting any better, is it?) colours. He now is editor/owner/something important in Motorsport News fortnightly magazine/newspaper.

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



  • Similar Content

  • Latest Posts

    • Hi guys, has anyone either purchased or built themselves a rotisserie for their car before? I can only just justify the need for one hence why I should just make one but at the same time, if I make one I can kiss another 4 weeks of potentially productive car working time goodbye because I'm building a bloody rotisserie....  I mainly want it for the application of the body deadener.  Cleaning the old stuff off, priming and then colour over the deadener doesn't worry me, it's just the application using the Schutz Gun that I feel would achieve a significantly better finish painting it side on and keeping the Schutz Gun upright.  I don't think they would work well on the side let alone almost upside down for some areas.  If the product I use (Terosun, etc) could work through a HVLP ok then it might be ok to apply without the rotisserie.   I can get one of these style ones for about $1200 which is pretty good value-     I reckon if I made one it would cost around $500 but it's more the time that it would take is more of a killer than the cost.  They look to hold their value pretty well second hand so I could always sell it after using it and realistically only lose $200-$300 at worst.  Or keep it and buy another project when this one finally sees the light of day... Anyone selling one...? Cheers!  
    • While it is a very nice idea to put card style AFMs into the charge pipe (post intercooler, obviously), the position of the AFM and the recirc valve relative to each other starts to become something that you really have to consider. The situation: The stock AFM is located upstream the turbo, and the recirc valve return is located between the AFM and the turbo inlet, aimed at the turbo inlet, so that it flows away from and not through the AFM. Thus, once metered air is not metered again, neither flowing forwards, or backwards, when vented out of the charge pipe. When you put the AFM between the turbo outlet and the TB, there is a volume of pressurised charge pipe upstream of the AFM and there is a volume of pressurised pipe downstream of the AFM. When the recirc valve opens and vents the charge pipe, air is going to flow from both ends of the charge pipe towards the recirc valve. If the recirc valve is in the stock location, then the section between it and the TB doesn't really matter here - you're not going to try to put the AFM in that piece of pipe. But the AFM will likely be somewhere between the intercooler and the recirc valve, So the entire charge pipe volume from that position (upstream of the AFM, back through the intercooler, to the turbo outlet) is going to flow through the AFM, get registered as combustion air, cause the ECU to fuel for it, but get dumped out of the recirc valve and you will end up with a typical BOV related rich spike. So ideally you want to put the AFM as close to the TB as possible (so, just upstream of the crossover pipe, assuming that the stock crossover is still in use, or, just before the TB if an FFP is being used) and locate the recirc valve at the turbo outlet. Recirc valve at the turbo outlet is the new normal for things like EFRs anyway. In the even of a recirc valve opening dumping all the air in the charge pipe, pretty much all of it is going to go backwards, from the TB to the recirc valve near the turbo outlet. But only a small portion of it (that between the TB and the AFM) will pass through the AFM, and it will pass through going backwards. The card style AFMs are somewhat more immune to reading flow that passes through them in reverse than older AFMs are, so you should absolutely minimise the rich pulse behaviour associated with the unavoidable outcome of having both a recirc valve and an AFM in the charge pipe.
    • Yep, in my case as soon as I started hearing weird noises I backed off the tension until it sounded normal again. Delicate balance between enough tension to avoid that cold start slip and too much damaging things.
    • I'm almost at a point where I feel like changing the alternator. Need to check the stuff you mentioned first though.
×
×
  • Create New...