Jump to content
SAU Community

Recommended Posts

How much of the fwd honda is left? last I heard they were tube framed with massive slicks. The GTR has a full chassis and tyres that are not that much bigger than standard width.....

very good point...As is the case with any of the front drive drag cars in that category be it honda or chevrolet..They have more in common with a remote control car than a streetcar...just a fibreglass shell over a tube chassis..Engine has been moved forward for weight transfer and even angled forward for weight transfer reasons.Wheelybars are set with positive lift tension on them.Anything and everything has been moved over the front wheels...Tub style front end with huge slicks...and the back of the car is sheet aluminium underneath with skinny wheels on the back...you could probable lift the whole back of the car bare handed...all that coupled with a very impressive 4 banger making ridiculous horsepower

  • Replies 114
  • Created
  • Last Reply

Top Posters In This Topic

errr how is the mines gtr not a street car???

retains FULL interior, has every luxury the car came out with and street tyres..

that sounds alot like EVERY other skyline out there.. cept, it has Factory AIRBOXES. its more street than most of our cars!.. how many of us actually have a factory airbox???

The mines gtr is the kind of car, u could go to the EPA with and probably pass!.. stock brakes with uprated pads... wheels within spec of stock. exhaust that isnt that loud... system, a/c, p/s, abs... hows it not street? That FD isnt street.. and i did say that there are atleast 2 cars that i know of faster than the Mines GTR... an rx7.. and a evo.. the HKS evo if im not mistaken :D

Edited by Bumblebee
errr how is the mines gtr not a street car???

it has no cage.. retains FULL interior, has every luxury the car came out with and street tyres..

that sounds alot like EVERY other skyline out there.. cept, it has Factory AIRBOXES. its more street than most of our cars!.. how many of us actually have a factory airbox???

The mines gtr is the kind of car, u could go to the EPA with and probably pass!.. stock brakes with uprated pads... wheels within spec of stock. exhaust that isnt that loud... system, a/c, p/s, abs... hows it not street? That FD isnt street.. and i did say that there are atleast 2 cars that i know of faster than the Mines GTR... an rx7.. and a evo.. the HKS evo if im not mistaken :D

You're going to have to show me a link to the Tsukuba Mine's time-attack car, because the car I saw definitely didn't have stock brakes or street tyres (which would put it in another class, which, as far as I know, would struggle to get under 1min). Not trying to start a shitfight, just rationalising what I've actually seen at TAS and OAM (which doesn't necessarily = what happens on the track).

BTW - http://en.wikipedia.org/wiki/Tsukuba_Circuit

ok :D extract from some magazine

The suspension component of the GT-R is addressed in the same spirit of the motor-near track-worthy performance in streetable form. A three-way Mine's Force Full Spec suspension with stiff 12.5k (front and rear) springs ensures the Bridgestone Potenza RE55S SR2-wrapped 18-inch Magnesium Evolution II (built by BBS) wheels maximize their contact with the asphalt. The Mine's front and rear stabilizers fight chassis flex during turning and the AP big brakes (six-pot front; four-pot rear) paired with Mine's PFC pads flex up the frictional force.

hmmm potenza RE55S... those r like ultimate street tyres.. sure they'll last like 2000km, but theyre street tyres nontheless :( no full slicks here :)

my bad on the brakes thou.. i coulda swore that on the Mines interview he said stock brakes with uprated pads.. oh wellz

everything else still stands :blink: Its more legal than my car, and about a million times faster around a track :wave:

You're going to have to show me a link to the Tsukuba Mine's time-attack car, because the car I saw definitely didn't have stock brakes or street tyres (which would put it in another class, which, as far as I know, would struggle to get under 1min). Not trying to start a shitfight, just rationalising what I've actually seen at TAS and OAM (which doesn't necessarily = what happens on the track).

BTW - http://en.wikipedia.org/wiki/Tsukuba_Circuit

Brian youre making sense but seriously, you waded into a slapfest that has no winners.

*grabs Brian by the shirt*

"Im draggin' you out of this one mate...theres no survivors here...cmon, lets man the Fonz's"

You realize that the Civic has to be a 'fully-built' lower end and it has to be run on race gas > 98 - 100 octane at those boost levels. It is a grenade waiting to happen.

This is a couple quotes from JSpeed on the GTROC (British GT-R forum) on the race; he was there (in Singapore).

1st 2 runs:The GTR let the Civic start first and was way out of his power band at 2000+rpm 2nd gear and still lost by only 1/2 car length. If they had both started in 1st gear or 2nd gear in the GTR's powerband, the GTR would have won by a HUGE distance, hence they raced under such conditions.

3rd run: The GTR tried starting in 1st gear but revs were too high and he hit the rev limiter instantly while the Civic just pulled away. He tried to catch the Civic but gave up after 3rd gear.

Facts:

Civic never ran 2.0 bar of boost, was running 1.6 bar all the way.

The GTR was on STOCK ECU but de-limited with Mine's exhaust. It for sure did not have the Mine's ECU if not would have probably won

It was a friendly race to see how fast the Civic was after tuning. If they launched or even rolling started in 1st gear, the GTR would have won by bus lengths. However, I think the guy who put the video up has his own agenda or did not have the proper info

Theres alot of Ppl in the world that don't want the GTR to have this much credit and do gay video's like this!!!

Ok ok.... lets take a Japanese Rival company who competes against Nissan cause were always in there shadow when it comes to performance production cars, and like fully blow a car with all the fully sick turbo's and the sickest boost you can ever get! I'm talking boost of the rictor scale and make a video of it and show we took on this car with a shit load of money that we should of spent designing something that would out do it on the production line???

I wanna see a Honda Civic Vs a Bugatti Veyron!!! Something i could have a laugh at rather then see tossers bag out the GTR!

The evidence is the New GTR is a all rounder! Good Production Quarter Mile time, Good 0-100 Speed, handles Track really well! The list goes on........

Name other production cars with that value in $$$ in it's class!!!?????

Double thumbs up from me NISSAN!!!!

Theres alot of Ppl in the world that don't want the GTR to have this much credit and do gay video's like this!!!

Ok ok.... lets take a Japanese Rival company who competes against Nissan cause were always in there shadow when it comes to performance production cars, and like fully blow a car with all the fully sick turbo's and the sickest boost you can ever get! I'm talking boost of the rictor scale and make a video of it and show we took on this car with a shit load of money that we should of spent designing something that would out do it on the production line???

I wanna see a Honda Civic Vs a Bugatti Veyron!!! Something i could have a laugh at rather then see tossers bag out the GTR!

The evidence is the New GTR is a all rounder! Good Production Quarter Mile time, Good 0-100 Speed, handles Track really well! The list goes on........

Name other production cars with that value in $$$ in it's class!!!?????

Double thumbs up from me NISSAN!!!!

Rant much?

lol @ hand granade waiting to happen.

Does that mean that ever other engine putting out decent power is a hand granade waiting to happen? I think not! Since when is 98-100 octane fuel 'race fuel'?

Lame excuses from people trying to defend the GTR being beaten!

lol who the f**k cares? its a dedicated drag car good for one thing up against a factory car that is relatively comfortable with plenty of luxuries, is reliable, can do more than just going fast in a straight line, and most importantly is legal. let the honda boys have their victory, because in the end, its just a civic that can go fast in a straight line.

lol @ hand granade waiting to happen.

Does that mean that ever other engine putting out decent power is a hand granade waiting to happen? I think not! Since when is 98-100 octane fuel 'race fuel'?

Lame excuses from people trying to defend the GTR being beaten!

Didnt you see the > infront of the 98-100??? or you dont know what that symbol means?

lol @ hand granade waiting to happen.

Does that mean that ever other engine putting out decent power is a hand granade waiting to happen? I think not! Since when is 98-100 octane fuel 'race fuel'?

Lame excuses from people trying to defend the GTR being beaten!

trying to bring some truth to the conditions of the race.

If you ever build a high boost engine with stock internals or even with a built lower end, you will start to realize what I am talking about regards the higher octane needed to run that Civic at those boost levels.

I have raced boosted Z06s in my 4 cylinder and beat them all day long. Am I going to say that it isn't a fully-built race engine with nitrous and water-methanol injection? No!

I was bringing to light the conditions of the race and the fact that the civic was highly modified and operating near the limits of the stock block. And it was given a head start. lol!

It's just a conversation. :)

Guest
This topic is now closed to further replies.



  • Similar Content

  • Latest Posts

    • The other problem was one of those "oh shit we are going to die moments". Basically the high spec Q50s have a full electric steering rack, and the povo ones had a regular hydraulic rack with an electric pump.  So couple of laps into session 5 as I came into turn 2 (big run off now, happily), the dash turned into a christmas tree and the steering became super heavy and I went well off. I assumed it was a tyre failure so limped to the pits, but everything was OK. But....the master warning light was still on so I checked the DTCs and saw – C13E6 “Heat Protection”. Yes, that bloody steering rack computer sitting where the oil cooler should be has its own sensors and error logic, and decided I was using the steering wheel too much. I really appreciated the helpful information in the manual (my bold) POSSIBLE CAUSE • Continuing the overloading steering (Sports driving in the circuit etc,) “DATA MONITOR” >> “C/M TEMPERATURE”. The rise of steering force motor internal temperature caused the protection function to operate. This is not a system malfunction. INSPECTION END So, basically the electric motor in the steering rack got to 150c, and it decided to shut down without warning for my safety. Didn't feel safe. Short term I'll see if I can duct some air to that motor (the engine bay is sealed pretty tight). Long term, depending on how often this happens, I'll look into swapping the povo spec electric/hydraulic rack in. While the rack should be fine the power supply to the pump will be a pain and might be best to deal with it when I add a PDM.
    • And finally, 2 problems I really need to sort.  Firstly as Matt said the auto trans is not happy as it gets hot - I couldn't log the temps but the gauge showed 90o. On the first day I took it out back in Feb, because the coolant was getting hot I never got to any auto trans issues; but on this day by late session 3 and then really clearly in 4 and 5 as it got hotter it just would not shift up. You can hear the issue really clearly at 12:55 and 16:20 on the vid. So the good news is, literally this week Ecutek finally released tuning for the jatco 7 speed. I'll have a chat to Racebox and see what they can do electrically to keep it cooler and to get the gears, if anything. That will likely take some R&D and can only really happen on track as it never gets even warm with road use. I've also picked up some eye wateringly expensive Redline D6 ATF to try, it had the highest viscosity I could find at 100o so we will see if that helps (just waiting for some oil pan gaskets so I can change it properly). If neither of those work I need to remove the coolant/trans interwarmer and the radiator cooler and go to an external cooler....somewhere.....(goodbye washer reservoir?), and if that fails give up on this mad idea and wait for Nissan to release the manual 400R
    • So, what else.... Power. I don't know what it is making because I haven't done a post tune dyno run yet; I will when I get a chance. It was 240rwkw dead stock. Conclusion from the day....it does not need a single kw more until I sort some other stuff. It comes on so hard that I could hear the twin N1 turbos on the R32 crying, and I just can't use what it has around a tight track with the current setup. Brakes. They are perfect. Hit them hard all day and they never felt like having an issue; you can see in the video we were making ground on much lighter cars on better tyres under brakes. They are standard (red sport) calipers, standard size discs in DBA5000 2 piece, Winmax pads and Motul RBF600 fluid, all from Matty at Racebrakes Sydney. Keeping in mind the car is more powerful than my R32 and weighs 1780, he clearly knows his shit. Suspension. This is one of the first areas I need to change. It has electronically controlled dampers from factory, but everything is just way too soft for track work even on the hardest setting (it is nice when hustling on country roads though). In particular it rolls into oversteer mid corner and pitches too much under hard braking so it becomes unstable eg in the turn 1 kink I need to brake early, turn through the kink then brake again so I don't pirouette like an AE86. I need to get some decent shocks with matched springs and sway bars ASAP, even if it is just a v1 setup until I work out a proper race/rally setup later. Tyres. I am running Yoko A052 in 235/45/18 all round, because that was what I could get in approximately the right height on wheels I had in the shed (Rays/Nismo 18x8 off the old Leaf actually!). As track tyres they are pretty poor; I note GTSBoy recently posted a porker comparo video including them where they were about the same as AD09.....that is nothing like a top line track tyre. I'll start getting that sorted but realistically I should get proper sized wheels first (likely 9.5 +38 front and 11 +55 at the rear, so a custom order, and I can't rotate them like the R32), then work out what the best tyre option is. BTW on that, Targa Tas had gone to road tyres instead of semi slicks now so that is a whole other world of choices to sort. Diff. This is the other thing that urgently needs to be addressed. It left massive 1s out of the fish hook all day, even when I was trying not too (you can also hear it reving on the video, and see the RPM rising too fast compared to speed in the data). It has an open diff that Infiniti optimistically called a B-LSD for "Brake Limited Slip Diff". It does good straight line standing start 11s but it is woeful on the track. Nismo seem to make a 2 way for it.
    • Also, I logged some data from the ECU for each session (mostly oil pressures and various temps, but also speed, revs etc, can't believe I forgot accelerator position). The Ecutek data loads nicely to datazap, I got good data from sessions 2, 3 and 4: https://datazap.me/u/duncanhandleyhgeconsultingcomau/250813-wakefield-session-2?log=0&data=7 https://datazap.me/u/duncanhandleyhgeconsultingcomau/250813-wakefield-session-3?log=0&data=6 https://datazap.me/u/duncanhandleyhgeconsultingcomau/250813-wakefield-session-4?log=0&data=6 Each session is cut into 3 files but loaded together, you can change between them in the top left. As the test sessions are mostly about the car, not me, I basically start by checking the oil pressure (good, or at least consistent all day). These have an electrically controlled oil pump which targets 25psi(!) at low load and 50 at high. I'm running a much thicker oil than recommended by nissan (they said 0w20, I'm running 10w40) so its a little higher. The main thing is that it doesn't drop too far, eg in the long left hand fish hook, or under brakes so I know I'm not getting oil surge. Good start. Then Oil and Coolant temp, plus intercooler and intake temps, like this: Keeping in mind ambient was about 5o at session 2, I'd say the oil temp is good. The coolant temp as OK but a big worry for hot days (it was getting to 110 back in Feb when it was 35o) so I need to keep addressing that. The water to air intercooler is working totally backwards where we get 5o air in the intake, squish/warm it in the turbos (unknown temp) then run it through the intercoolers which are say 65o max in this case, then the result is 20o air into the engine......the day was too atypical to draw a conclusion on that I think, in the united states of freedom they do a lot of upsizing the intercooler and heat exchanger cores to get those temps down but they were OK this time. The other interesting (but not concerning) part for me was the turbo speed vs boost graph: I circled an example from the main straight. With the tune boost peaks at around 18psi but it deliberately drops to about 14psi at redline because the turbos are tiny - they choke at high revs and just create more heat than power if you run them hard all the way. But you can also see the turbo speed at the same time; it raises from about 180,000rpm to 210,000rpm which the boost falls....imagine the turbine speed if they held 18psi to redline. The wastegates are electrically controlled so there is a heap of logic about boost target, actual boost, delta etc etc but it all seems to work well
    • hahah when youtube subscribers are faster than my updates here. Yes some vid from the day is up, here:  Note that as with all track day videos it is boring watching after the bloopers at the start.  The off was a genuine surprise to me, I've literally done a thousand laps around the place and I've never had instability there; basically it rolled into oversteer, slipped, gripped and spat me out. On the way off I mowed down one of the instructor's cones and it sat there all day looking at me with accusing cone eyes as I drove past. 1:13:20 was my fastest lap, and it was in the second session, 3rd lap.  It (or me!) got slower throughout the day as it got hotter.      
×
×
  • Create New...