Martin Donnon

Run one of our WR35FS Fuel Surge tanks, allows full power at under 10 litres tank level, and can save you 50kg or so in fuel load Thats not important to some that dont race their cars (I think GT-Ricer was being a little tongue in cheek) but it is well important to others that go racing on the odd weekend and want the fastest lap time possible

We used the Walbro pumps because they have a lot of testing hours under their belt with E85 in the US, and seem to have a good track record in the E85 cars we have had them on for 24 months or so over here. Injector sizing is 950cc for this application, which should deliver me another 100awkw potential from this package - so there is room left for a turbocharger upgrade before needing to revise the fuel system any further

We arent finished yet Marko

Willall Racing brand, we designed and engineered it ourselves, and are having a small production run made over the next couple of weeks for clients that have requested them

This should balance the chassis much better at > 200km/h

This one - (my fav pic of the car) GTR hunting in its natural environment

Designed up and fabricated a front splitter for the GTR over the past few days. Making it rigid and them mounting it properly to take force across its section was a little harder than first thought, but we have a result that should provide a good aero balance at high speed now Pics later

If only acceleration was along the X axis! I would take that

Have a look at where the marker is on the lap plot in post #14. Like I said it feels a little 'daunting' to drive, but I have some more mods planned this week which should see the car stable at 1.4G continuous through there, and hopefully another 10km/h faster Here is the G-Circle for the car Fungoolie. As you can see it has some grip, but it could be better!

I didnt get around to a full G-plot today (forgot actually!) What I can tell you though Fungoolie is that in the Esses we are seeing around 1.35-1.4 lateral G loading, and the big one -1.2G at 202km/h on the face of the kink. Thats why it feels a little scary

Lap Times are nothing without proof from a proper log, and here it is We need to balance the chassis in this car a bit more and then it will be seriously fast!

Interestingly enough the brake cooling system raised its head in anger when I had overlooked part of my job. Essentially I didnt mark off the bottle was filled between sessions, and sure enough there was enough water surge away from the pickup of the pump to ensure that before the low level warning was on (there was still over a litre in the tank) that the car was off an into the dirt with the brake pedal on the floor. At this pace we have four laps of full stint running before we have to refill the stock washer bottle, or risk boiling the brake fluid. To give you an idea of the temperature difference we now have a cooling system in the pits for the front brakes and the frontal cooling system of the car, when it came in with no water left in the tank the left hand side front pads caught alight, and thats after two cool down laps! Sure enough though we have done some math on the car today and have worked around what I believe is some sensible SA engineering thats still roadable to get this car comfortably into the 1:10 zone at the track

Hmmm might have to try and scam an entry into this one somehow....so I can terrorize Munro...in the EVO Seriously if anyone is dropping out let me know, its a bit tight being so close to Mt Alma on the schedule but sounds like a great day with some nice cars on the track

Today was one of those fruitful testing sessions where the track is 'in the slot' versus other times recently when we have been there where the drifters have convered the corners is dirt, or the supertrucks had laid diesel everywhere. No excuses today, it was a good solid fast track condition day and with plenty of time we were able to run some good data on the car and start to dial in the suspension and wing settings. Best part though is that after a couple of months working on our EVO programme I was able to get back in the chair of the GTR and have a feel of the setup....I was fortunate enough to have the opportunity of 'de-greening' the slicks in the morning session, which is kind of like trying to drive a 9 second drag car on ice. The biggest problem the GTR faces in its current guise is that it is traction limited. Believe it or not, even with a set of new Michelin medium compound slicks on board and properly bedded in controlling wheelspin through the esses and out of turns three and five is a real problem, and one that can panic the four wheel drive electronics if not managed correctly. You really need to feed the throttle to stop the fronts and rears lighting up and pushing the car into a big sideways moment. I found this out early on in the piece when the tyres were still green. The pure raw straighline speed of the car is unnerving as it builds speed so quickly, and is stretching well into fifth gear at the braking points, as is keeping the throttle into it through the kink and the long left hander out of the nothern hairpin. Its a difficult balancing act, and one I wasnt prepared to push the limits of after the break, so 14s over the three laps I did was acceptable. The whole time you need to keep the thought that this is a 700hp+ road car chassis in the back of your head and drive accordingly. It would be interesting to take one of the 'these cars drive themselves' crew for a passenger lap for the sport of it one day. My only suggestion would be to bring an adult diaper or be prepared to pay a cleaning fee 'Power down' engine management settings (TPS controlled boost mapping) for corner exit speed and then adjusting the relationship between bump/rebound and tyre pressure for the varying track temperatures over the day gave us the pace increase, no magic here, just a methodical work structure of test and tune. Sensibly on fresh tyres there is no reason why we shouldnt be able to record consistent 1:10 laps in this car. That might sound a little far fetched now, but 6 months ago the idea of a 1:12 in a road car would have been bordering on unbelievable, particularly as this is a stock engine, stock turbo, stock transmission car. Some well thought out modifications, a set of slick tyres and ongoing testing and development are the keys to this cars pace We have some way to go still to beat the Winfield cars by the looks of it, Skaife had it on pole there in 1991 with a 1.09 or similar. One must always have targets! However we are only 3 tenths of the outright Carerra Cup lap record to put the whole thing in perspective

Make that 1:12.19 mitric Overall a good day!

Really well done guys, I wish you were here

Here it is in 'Aus' format mate (400awkw on the knocker)

Let us know when you have a final sticker, we would be proud to run one on our R35 Tarmac car, being sponsors of the club and all

Yes that is true Beer Baron To give you an idea, the E85 conversion on stock turbos will give as much power/torque as a turbo upgraded R35 GTR on 98 Premium if not a little more, and blow away the 600 style kits with ease. This stuff is that good...... However the day is about to come where the turbo upgraded car gets E85 (you listening Slip?) and when it does I expect some massive numbers up there around 450awkw on a Mainline (think:big)

My post is based in 20 years EFI tuning experience and logic, no more. The fact that the first overseas generic PCM flash you purchased would not even start the car and invoked serious error conditions is reason enough alone to spend $100 and check the calibration of the second attempt on the dyno. If you find that offensive then I indeed apololgise. As a rule we insist that our customers have any tuning file we remotely supply for a GTR checked on the dyno. Its all part of standard procedure and proper duty of care for a responsible modification plan. Look forward to seeing your GTR on here

Cmon, enough random posting, I want to see MGS dyno graph. A Mail Order tune from another continent, plus exhaust/cat upgrades on Australia 98 RON fuel are worthy of a dyno for the sheer sake of logic alone, unless you dont want to get it on boost. Its $100 well spent on peace of mind MGS After all Porsche will be able to see the PCM has been flashed via a technique known as BDM, so in the case of a failure, you have no warranty, so check it out. Often canned tunes equate our fuel to Mid West 93 R+M/2 which is not really an equivalent

Here is some validation from the Driftbox. This was the quickest timed lap, but not the highest top speed (the two rarely go together strangely enough!)

Now this is exotic! Its all good fun, no one is losing an eye, even MGS would be having a good laugh at this thread

Nasty conditions out there today, like an oven I believe his best was 16.9 in the GT3, vs 13.5 for the GTR, so 3.4 seconds. Mainly it looked to be in the 17s from the lap scoring