Jump to content
SAU Community

Recommended Posts

Now that the wheels point straight all the time and it has some consitency in the camber curves it should be a fair bit faster and noticeably easier to drive. Particularly on the technical tracks. Hence why I reckon there's a good 5 seconds or so available at OP GP for a 1.13 maybe a 1.12, the 1.18 doesn't align well with the other times.

If John can coax that out of it on the day, I reckon it will be hard to beat. It's certainly the sort of times, given a dry track, that I expect will be needed to be in there with a chance.

Cheers

Gary

The 1min 18 was about 2 years ago and car is much better now. Yes Oran GP is much better suited to my car and Sydneykid has been a great help with suspension and advice, and also made me some custom sway bars. Working on rear of car changing pivot points of diff cradle brackets for rear steering link, upper control and forward traction arm as well as sorting toe change through its range of movement being 6mm total change. Turn one or kink down the straight and the dog leg is not really 4wd corners and suits my car better and sort of a few others around the back are more 4wd corners, and don't mention rain or wet track please.

This first event will be very interesting and a yard stick for everyone to see where they are at and who is who in the game. Then it will be interesting to see mods and times especially if going back to the same track from then on. If not just how each car goes in comparison to others anyway.

Hey I just found this pic and looks like GTR Jason behind me???? waiting.........

300_gtr.jpg

Oran straight vid. Slot Car sucking in the air.

  • Replies 1.9k
  • Created
  • Last Reply

Top Posters In This Topic

Far too much effort going into getting cars to handle. Just up the boost and have more fun wrestling it :banana:

I do wich i had a Z32, it would be so nice to just buy the crap you are developing on your car John. Nobody stuffs with R32 GTSt so stuick with the expense of learning the hard way myself :down:

SK, if only swaybars could give my car more hp, better gearbox, brakes and suspension alignment :ermm:

Far too much effort going into getting cars to handle. Just up the boost and have more fun wrestling it :ban:

I do wich i had a Z32, it would be so nice to just buy the crap you are developing on your car John. Nobody stuffs with R32 GTSt so stuick with the expense of learning the hard way myself :(

SK, if only swaybars could give my car more hp, better gearbox, brakes and suspension alignment :ban:

Hang on, I'm stuffing with an R32GTST :down: lighter than the Zed, similar power out of the RB31DET, same size wheels & tyres, better shocks, Eibach springs, same brand swaybars (obviously) with similar adjustment, similar sized brakes, 6 point cage, Pi dash, RB25DET gearbox, twin plate clutch etc. The Zed has a lower CoG and better aero, other than that the R32GTST should be fairly evenly matched. We just have to get all the bits working together, especially the rusty nut holding the steering wheel, that's always a problem.

Cheers

Gary

Hang on, I'm stuffing with an R32GTST :down: lighter than the Zed, similar power out of the RB31DET, same size wheels & tyres, better shocks, Eibach springs, same brand swaybars (obviously) with similar adjustment, similar sized brakes, 6 point cage, Pi dash, RB25DET gearbox, twin plate clutch etc. The Zed has a lower CoG and better aero, other than that the R32GTST should be fairly evenly matched. We just have to get all the bits working together, especially the rusty nut holding the steering wheel, that's always a problem.

Cheers

Gary

LOL...but you have the knowledge and resources to do it...even if you do struggle for the time. My thing is a 1300kg, 235/40/17 wearing, std RB20 engine and gearbox R32 GTSt with a lowly 260rwkws on a good day with average brakes, and some decent bits under it but as for all the super alignment/arm settings etc :( Doesnt the ZED have 315 rear tyres?

I am looking at a set of 18 x 8.5 +30 and 18 x 9.5 + 36 offset rims for 235/40R18 fronts and 245/40R18 rears, thats about as big as i think i can get under my car. I may just stick with those sizes in 17s...meh. Be great to see someone with a nicley sorted GTSt, 9 years into the build the wind is out of my sails and will never quite get to the development that i had hoped to reach (ie, have the power i want, just not the cooling, brakes and suspension to reliably flog it for 20mins at the track) :ban:

LOL...but you have the knowledge and resources to do it...even if you do struggle for the time. My thing is a 1300kg, 235/40/17 wearing, std RB20 engine and gearbox R32 GTSt with a lowly 260rwkws on a good day with average brakes, and some decent bits under it but as for all the super alignment/arm settings etc :thumbsup: Doesnt the ZED have 315 rear tyres?

I am looking at a set of 18 x 8.5 +30 and 18 x 9.5 + 36 offset rims for 235/40R18 fronts and 245/40R18 rears, thats about as big as i think i can get under my car. I may just stick with those sizes in 17s...meh. Be great to see someone with a nicley sorted GTSt, 9 years into the wind is out of my sails and will never quite get to the development that i had hoped to reach :laugh:

I think you grossly underestimate the potential of your engineering skills and those of the car itself. We managed to get a full weight S14 (1340 kgs with driver) that had 225 rwkw down to mid 1.06's at Wakefield on 235/45/17 A048's. That's a whole lot less in the power to weight ratio stakes than your R32GTST. Standard callipers, good pads and rotors (DBA 5000 series on the front), Bilstein shocks (slight valving changes), coil over conversion, Eibach springs, adjustable swaybars, Noltec caster and camber kits........so basically the Road & Track Group Buy suspension kit. It's not a one off either, Johno from Heasmans did similar in his S14 with slightly less power.

There is absolutely no logical reason why an R32GTST shouldn't be even better, the strut based S14 front end is such a pain compared to the double wishbone R32 set up.

Cheers

Gary

I think you grossly underestimate the potential of your engineering skills and those of the car itself. We managed to get a full weight S14 (1340 kgs with driver) that had 225 rwkw down to mid 1.06's at Wakefield on 235/45/17 A048's. That's a whole lot less in the power to weight ratio stakes than your R32GTST. Standard callipers, good pads and rotors (DBA 5000 series on the front), Bilstein shocks (slight valving changes), coil over conversion, Eibach springs, adjustable swaybars, Noltec caster and camber kits........so basically the Road & Track Group Buy suspension kit. It's not a one off either, Johno from Heasmans did similar in his S14 with slightly less power.

There is absolutely no logical reason why an R32GTST shouldn't be even better, the strut based S14 front end is such a pain compared to the double wishbone R32 set up.

Cheers

Gary

Yeh but Wakefield is a funny one. I havent been there since moving to Melb 4 years ago, but based on the 1:13.4 on old Yoko DNA tyres, the Whiteline kit you put in it and 140rwkws and a driver still improving....i quietly think i could do 1:06s, definitely sub 1:08s.

LOLm what i want is a teen at Sandown, a 1:35 at Winton and a 1:47 at Phillip Island. I think i could almost get those times with another few set of tyres and a bit more tweaking of what i have....but thats 10k worth of fuel, tyres and entry to events that i just cant justify for 12-18 months :down:

So stoked to see your car will be getting out there and Adz will be giving his RB25 R32 GTSt a red hot go...its just a shame you call cheated and binned the RB20 :blush:

Just wondering if anyone can give me an idea of how lap times at Morgan and lakeside compare to Oran?

the IPRA nationals were at Morgan Park last year. should be able to find the times of some NSW competitors there like Loftus in the GTR and compare to his Oran GP record. I seem to recall he went under the IPRA lap record at Morgan Park in qual but not in the races???

I was there to watch - the final on Sunday was a cracker after the safety car period allowed Keys RX3 to close in on Lofty's lead. He threw everything at him for a number of laps after the restart. some very good, close racing from both drivers.

Edited by hrd-hr30
Yeh but Wakefield is a funny one. I havent been there since moving to Melb 4 years ago, but based on the 1:13.4 on old Yoko DNA tyres, the Whiteline kit you put in it and 140rwkws and a driver still improving....i quietly think i could do 1:06s, definitely sub 1:08s.

As long as you are thinking it quietly and not posting it on a public forum......oh hang on? :D

the IPRA nationals were at Morgan Park last year. should be able to find the times of some NSW competitors there like Loftus in the GTR and compare to his Oran GP record. I seem to recall he went under the IPRA lap record at Morgan Park in qual but not in the races???

I was there to watch - the final on Sunday was a cracker after the safety car period allowed Keys RX3 to close in on Lofty's lead. He threw everything at him for a number of laps after the restart. some very good, close racing from both drivers.

Good point, as I recall he ran about 1:07 in qual and consistant 8's & 9's in the races.

Where would I find NSW IPRA data? Obviously I'm about to Google it.

:D

Exactly, the dollars required to get the next 2-3 seconds out of my car are huge. At present with no mods i know the car has another 1.5 seconds in at every track i have been to...so the gain is more like a real 1.5-2 seconds with better power, chassis/suspension and removing the non functioning air con and other crap that i have in teh car (hicas, amps, stereo, sound deadening).

The engine and geabox alone will be about 12k. Then i have to hope i have the brass tacks to drive it. I will sit back and see the time Adz punches out. I honestly believe the only thing stopping me from doing those times is some more practice at those tracks and a more usable 280-300rwkws. But i cant afford track days at present let alone another round of mods... But i will let Adan test my thinking. To date i havent been wrong with my lap time predictions :down:

As long as you are thinking it quietly and not posting it on a public forum......oh hang on? :D

Yeh, i am a shocker for talking way too much. But i at least try and quantify my experiences and thinking, and in these sorts of discussions i am sincere...but couldnt give two farks if i end up wrong or proven wrong. Actually i would love to be proven wrong as much as i would like to be right, at the end of the day at least we all end up spending our money a bit wiser/better. Though my car is a long way from being "special" quick, its respectable. And lots of people still have trouble believing the times and mods i run...its interesting to think that there is still time left in it and where do i go from here. If a car like Adz's R32 or Sydneykids R32 are only 2-3 seconds quicker...though a huge margin, in my eyes is not worth the spend. If they are 4-5 seconds quicker then i need to get busy rolling old ladies at the shopping centre :D

LOL, im rambling...need another scotch and drambuie

Lofty and I ran both of our GTR's at Morgan for the nationals.

The problem was the track got slower and slower over the weekends because of the oil from the Formula Vee's all weekend.

Crap vee's LOL I can say that because Benny Porter who works with me ended up winning the vee nationals on the same weekend at Morgan Park.

Lofty did a 1.07.7 in qualifying in his car and I did a 1.09.8 in my car.

In the final late on sunday afternoon Loftys fastest was a 1.09.0 and mine was a 1.11.0.

Lofty has done a 1.15.3 at Oran in his car and I have done a 1.17.0 in my car.

Hope this helps.

Btw this was the weekend http://www.natsoft.com.au/cgi-bin/results....30/09/2007.MORG

Hey ROY, I think the $$ difference between these two cars would be.....lets just say alot. But that is what you have to do when you want to find that extra edge.

Edited by Bozman1
I saw jonno crack a 1:07 at last years nscc track day. pretty certain he took out the fastest time of the day in a car with well under 200rwkw from what i have been told.

The 350Z was the fastest car on the day with a 1.07.3. Jonno's times were exceptional at the NSCC day last year. There were a few Silvia driver's doubting the 180rwkw power claim. He left me for dust and i have well under 300rwkw's

Edited by blacksx
LOL...but you have the knowledge and resources to do it...even if you do struggle for the time. My thing is a 1300kg, 235/40/17 wearing, std RB20 engine and gearbox R32 GTSt with a lowly 260rwkws on a good day with average brakes, and some decent bits under it but as for all the super alignment/arm settings etc Doesnt the ZED have 315 rear tyres?

I am looking at a set of 18 x 8.5 +30 and 18 x 9.5 + 36 offset rims for 235/40R18 fronts and 245/40R18 rears, thats about as big as i think i can get under my car. I may just stick with those sizes in 17s...meh. Be great to see someone with a nicley sorted GTSt, 9 years into the build the wind is out of my sails and will never quite get to the development that i had hoped to reach (ie, have the power i want, just not the cooling, brakes and suspension to reliably flog it for 20mins at the track)

Roy,

I time below is for Oran Pk GP . R32 GTST very basic upgrades. re55s 235/45 17 all round. 210rwkw's

7 536 Chris Manning NSCC Skyline 2000 SVD S2 1:19.0300 0:02.0300

Yeh but Wakefield is a funny one. I havent been there since moving to Melb 4 years ago, but based on the 1:13.4 on old Yoko DNA tyres, the Whiteline kit you put in it and 140rwkws and a driver still improving....i quietly think i could do 1:06s, definitely sub 1:08s.

LOLm what i want is a teen at Sandown, a 1:35 at Winton and a 1:47 at Phillip Island. I think i could almost get those times with another few set of tyres and a bit more tweaking of what i have....but thats 10k worth of fuel, tyres and entry to events that i just cant justify for 12-18 months :blink:

So stoked to see your car will be getting out there and Adz will be giving his RB25 R32 GTSt a red hot go...its just a shame you call cheated and binned the RB20 :)

As we have discused before, Sandown is two drag strips with a wiggle in between. It's all about horsepower, a little bit brakes and handling is definitely third on the rung there. The cheapest way to faster lap times at Sandown is more power, it is almost unique in that (Bathurst being the other). At other tracks the dollar per lap time ratio comes from handling improvements. An unfortunate truth, if you want go faster at Sandown then buy some more horsepower.

Philip Island is unique in its high average speed, there it's once again top end power followed by aerodynamics. Our Philip Island set up is totally different to every other track in Australia, for example we run spring rates there that are 20% to 30% higher than anywhere else. We run the biggest swaybars in the kit and both the bump and rebound damping are at the top end of the settings we use. We run more camber at the Island than we do anywhere else. Like Bathurst it is technical track and rewards driving experience (time in the seat) and a bit of bravery. You don't need a "pointy" car there, it rewards consistency and predictability, you need to be able to trust the car's response and a little bit of understeer is not a bad thing.

Of the three, Winton is probably the closest to the other tracks in the country, it gets dirty like Wakefield, it has some interesting low and mid speed corners like Oran, it is more of a torque layout than a horsepower one. You need the chassis to be responsive, no understeer at all. Then it's punch out of the endless right angle corners, so it's power down (soft rear end) and engine torque. The easiest way to a good lap time at Winton is to run there the day after the allocated V8 practise. The rubber lay down is important, going there after it has rained is a waste of money.

As you can see the set up at the 3 tracks is very different, a compromise setup won’t work in Vic like it does in NSW where the 3 tracks (Bathurst excluded) are not so dissimilar. For a start you need at least 2 sets of springs and swaybars. You need to know how much and be able to adjust the camber and toe accordingly. You need to run more rear squat at Winton than you would even contemplate at Philip Island. You can almost get away with simple single adjustable (rebound) shocks at Winton and Sandown, but bump adjustment is important at Philip Island. You can survive without a rear wing and front splitter at Winton and Sandown, but they are a must at the Island.

The RB31DET decision was easy for me, the old RB20DET needed a rebuild and a circuit spec upgrade (sump, oil pump, turbo etc). When I added it up it was going to cost more to build the RB20DET into an RB24DET than start from scratch with an RB30DET. So the big cube decision was a value for money one for me. Then, to cap it all off, someone offered me silly money for the RB30DET (with RB25DE top end) after one outing, so I had enough to build an even better RB31DET (with an RB26 top end).

Keeping all of the above in mind, at Sandown and Philip Island the RB20DET is always going to suffer in comparison, it is truly 100 bhp or so short in the power to weight stakes in an almost full weight R32GTST. Even if you did get the extra 100 bhp for those 2 tracks, then the throttle response and the all important punch out of the corners at Winton would be AWOL. In comparison, what you have now would work OK at the 3 tracks in NSW with a bit of practise and set up data.

Bottom line, move back to Sydney or stick an RB25/26/30/31 in it.

Cheers

Gary

Guest
This topic is now closed to further replies.



  • Latest Posts

    • 49719 is the cooler loop. Right at the front, LHS of that diagram. Return line from rack (LP side) goes to cooler loop on RHS front of car, then back under engine and returns to bottom of tank. 49717M is feed from tank to pump. HP line out of pump is thick rubber, followed by the hard line that runs down to crossmember and runs in parallel (but opposite flow direction) to the LP return line. Nothing goes anywhere near the firewall or interior of car. The closest they get to that is the connections on the rack.
    • Thanks, plan is to drain all fluid tomorrow and do smoke test to find out the leak.   Appreciate your help and want to understand how the system work. So cooling is achieved by the long loop not any rad? The diagram seems to suggest it connects to somewhere inside the cabin and I thought that is a cooler inside firewall. If you look at the diagram it seems to show it connects to something inside firewall. I tried chasing it but not easy unless I take loads off   i am confident pump is good as fluid goes in and it gets soft( steering) but as soon as I turn engine off , loads of bubble come to surface and overflow. When engine is on , fluid level is below minimum but when off it shoots off and thinking it is sucking air in. I suspect aluminium pipe may have a crack line or whole   smoke test with no fluid should be a good start and if needed will remove the pump   In addition, the one going under the engine bay is high pressure line and one directly connecting from pump to resorvoir is return/ low pressure?   finally I searched and suggestion is to use dexron 2 but that is discontinued so bought dexron 3 as all research suggest it is compatible and shouldn’t cause any issues/ blow seals. I bought two liter of dexron 3 motul atf
    • Don't worry about. Just don't try to drive hard enough to make boost and you'll be fine.
    • Yes. This has already been said. It is a loop of hardline in front of the radiator. Because.... the pump is on the LHS and the steering rack hydraulic connections are where they always are on a RHD steering rack....on the RHS. The high pressure line goes down under the engine, along the crossmember, like it does on all Skylines. Don't just throw expensive braided hoses/other kits at it. Work out what is wrong and fix that.
    • Still got the afm on the intake, clamps are shut tight, only loose hose is the one that goes from the j pipe towards the IACV, since it's next to impossible to find a factory hose and the barbs are different sizes (I'm still using clamps on this hose to try and help it seal on the iacv side) I've ordered parts to make up the hotside of the intercooler pipes, I'll plumb it in and see what happens in a few days I suppose The turbo's internally gated, can I just unscrew the tension rod to let the gate open?
×
×
  • Create New...