Nug's Time Attack Car

[Nugs]

Great build and job with her! Question on that seat. Is it functional? Can you really use that over the OEM seat (save a ton of money and put it in just for track days)?

Most people aren't aware of this hack.
Cheap 5 point harnessed seats are available from your local babyworld.

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[MisterSkiz]

When is the transmission getting upgraded?

 

[FLtrackdays]

Homie are you serious? First of all, that is the passenger seat, secondly, that is a kids seat insert. Lmao.

DAmnnnnnn…. It’s right side driving over there? Great point and hilarious. I figured as much ? Regardless, that’d be so sweet if someone made something like that, that actually worked. Just sayin….

ask your RACE SHOP

Too worried they’ll state the obvious and I’ll be down the full blown track car wabbit hole… But yeah, eventually gotta go that rout ? (or buy another Supra for in town only ?)

Sorry Nugs… Great build and track you go to ?

 

[Nugs]

When is the transmission getting upgraded?

It has been built by Auto Trans Australia in Sydney.

Had to send it across the country but thought it was a better option than shipping it to Pure in the US.

 

[Nugs]

Bit to catch up on here, title is not really relevant as the car doesn't see the street much anymore.

Decided to go to World Time Attack challenge in Sydney, I initially didn't get accepted, then 3 months later got bumped off the waitlist so was a bit of a scramble to get everything ready.

We put in a half cage and bought some aero.

Got an exhaust and charge pipe made.
The charge pipe that came with the AMS turbo kit relied way too much on silicon joiners.
The new exhaust removes where it necks down to 3" and is proper 3.5" the whole way.

Then realised we couldn't exit the exhaust there under WTAC clubsprint rules so we quickly made a new rear section. Actually sounded heaps better with the little BMW resonator added.

After a lot of mucking around with the AMS kit wastegate actuator interface we made the exact same power. Not 100% happy as it was a bit lazier coming on boost than it should have been. This would rear it's head again later.

Our custom MCA gold coilovers did not get made in time so we chucked some stiffer springs on the M-Factory coilovers already on the car. Will show later why this did not turn out to be a good idea.

There were a bunch of other little things like new transpan on freshly built gearbox (third time lucky) with a Rod Supthin tune.

Verus oil cooler, bushings, engine mounts etc.

Then with zero testing due to non stop rain we loaded it up for the 4,000 km drive to Sydney.

Was a long boring drive but thought this detour through mount Panomara/Bathurst was cool.

Part 2 to follow.

 

[TBK]

Straight pipe. Mother of all wings. Trailered. "Street car". Lol maybe the thread title needs a bit of tweaking now?

 

[Nugs]

done.
I did address that in the first sentence.
It is still street registered, just spends more time in the workshop than on the street.

 

[Nugs]

Copied from my build thread on another forum.

WTAC lived up to the hype for me.


Took 4 days driving across the Australia, had a rest day in Sydney Tuesday.
Then hit the track a driving solutions track day Wednesday.

Lost the morning session as the wastegate actuator was playing up again.
Swapped it out for a new one and adjusted the arm so it should never move again.

Got my first laps of the track in the afternoon and slowly improved every session.
This was my first time driving Sydney Motorsport Park, so really just familiarisation time as I am a pretty slow starter.

Had official practice Thursday, all went well and car felt strong. Got a feel for how to manage traffic at the actual event.

Friday
Session 1: Didn't managed traffic well and didn't get a clear lap in.

Session 2: Was much better and starting to gain some confidence and managed a 1.38.9. Which would end up being my best lap.
[video=youtube;XG5WjNgEfZ0]

Session 3: track felt horrible with the heat and left over rubber from the drifting at lunch.

Session 4: started pushing harder and did better in every corner, just not on the same lap. Also my splitter started hitting the ground braking from 265kmh for Turn 1. We didn't expect it to actually work so well and it had pulled down and started to crack the aluminium crash bar it was mounted to. So a quick bunnings trip was made for some extra reinforcements.

Funnily we were clearing out a bunch of my junk from the workshop yesterday and found the actual Verus reinforcement kit we never installed. Ours feels stronger anyway

Saturday:
Session 1: I was ready to send it, but red flags meant we got one lap and three more cars broke down on the side of the track during that lap. Also the front end of the car felt completely different to Friday and wouldn't turn in or brake the same.

Session 2: tried adjusting suspension and dialling out all the wing but front felt no better.

Session 3: tried driving around the understeer and ended up running wide through turn 1 and taking a ride over the curbs through the dirt at 180kmh.

Went around to send it for another lap and braking for turn 6 felt something break and the car jumped sideways across the track. Limped it back into the pits to find the front left shock had actually come apart. Pretty happy it happened there and not Turn 1.

We were asking a lot of pretty budget orientated shocks and running spring rates 50% higher than they were valved for as the higher end shocks we had ordered never arrived.

So I didn't get my "One Perfect Lap" in but that is Time Attack.


The rest of the car was solid and ran hard every session, could do three hot laps in row if traffic let me, and only thing stopping me from doing more was the tyres.

Overall the event was awesome.
Really well run, met heaps of cool people and heaps to see.
The parts I had time to watch as a a spectator were excellent. Some epic moments in the shoot outs.

The GMW boys went above and beyond, getting the car ready, driving across the country and excellent track side support so I could focus on driving.
Good fun to hang out with as well. We were going slightly stir crazy after 15 hours in the car on the last day but I have not laughed that hard in a long time.

and some pics

 

[razorlab]

That wang looks great. SC does really nice work.

 

[i3igpete]

Beautiful machine all around.

 

[Nugs]

Already planning for next year. This year we rocked up at a track I've never driven, in a car I hadn't driven for 10 months and zero time driving it with aero.
As a result I was about 4 seconds slower than my target time.
So not looking to make big changes, just tweaking and dialling it in.

First thing is fixing the suspension.
These just arrived.

Nitrons R3s, they look beautifully made.

Spring rates were supposed to be
16kg front (895lb/in)
17kg rear with true coilovers. (951lb/in)

But they sent me a divorced rear spring set up so asking them what's up before I install.

I currently have 24kg (1343lb/in) rear springs in the car so could just use those.

Also have all the Verkline parts to go into the rear suspension.

Also have a custom front splitter getting made.
WTAC Clubprint spllitter rules are a bit weird. Can only go forward 50mm but can go as wide as the car so everyone ends up with hammerhead looking things.
like this one

The brief is to max out the envelope available, with the biggest diffusers possible without moving coolers, and the plan is it will bolt onto the Verus mounts and use the Verus air dam.

The Verus high DF splitter actually worked better than expected, but isn't really enough to match the rear DF and it isn't technically legal.
If I was more competitive, rather than mid pack, I probably would have got a complaint and would have had to cut at least 30mm off it.

Other than that we are just going to drop the sump to put in the updated oil pump, mine still has the 2019 one and is starting to fail oil level checks, and check and replace rod bearings while we're in there.

I did start thinking about throwing in rod, pistons, cams and a bigger turbo but the car doesn't really need more power.

Then just as much seat time as possible, and be ready earlier so I can get the car trucked to Sydney and not have to spend 8 days towing it back and forth.

 

[Nugs]

That wang looks great. SC does really nice work.

They do.
Was good to actually meet Greg from Sydney Composites (who built the wing and diffuser) and Kyle from JKF (who designed them) while I was in Sydney.

 

[Nugs]

One more thing to comment on is weight.
When I first got the car I weighed it and it was 1524ks with a full tank.

I haven't made weight reduction a priority as it was a street car until recently.
All the interior trim behind the seats is now removed, but a half cage was added.
Other than that the only weight reduction would be lightweight battery, Alcon brakes all around, straight through exhaust, and two racetech seats.
The wing and splitter would add decent amount of weight.
Have kept all the creature comforts, air con, carpet, stereo etc.

So I was surprised when it went on the scale at WTAC and it was 1460kgs.
Clubsprint regs have a minimum weight of 1425kgs, so might try and pull 35kgs out of it.

 

[TBK]

One more thing to comment on is weight.
When I first got the car I weighed it and it was 1524ks with a full tank.

I haven't made weight reduction a priority as it was a street car until recently.
All the interior trim behind the seats is now removed, but a half cage was added.
Other than that the only weight reduction would be lightweight battery, Alcon brakes all around, straight through exhaust, and two racetech seats.
The wing and splitter would add decent amount of weight.
Have kept all the creature comforts, air con, carpet, stereo etc.

So I was surprised when it went on the scale at WTAC and it was 1460kgs.
Clubsprint regs have a minimum weight of 1425kgs, so might try and pull 35kgs out of it.

I'm in the same place as far as weight reduction goes. Lightweight battery (on the way), Alcons (fronts on the way, didn't even know they had a rear kit?), titanium exhaust, seats etc...struggling to find more places to remove proper weight....especially from the front.

I have some ideas though. The HGK CF roof saves about 15lbs, and from a relatively desirable area too. Not prohibitively expensive either.

Lexan is prohibited in my class, but i believe i can do something about the rear quarter windows. So i found these CF bits also from HGK. They weight less than 0.5lbs. Don't know how much they save though...


The car would be quite loud with the roof and these rear quarter parts.

 

[Nugs]

I don't know if the rear is an off the shelf kit. My mechanics source Alcons from www.coore.com.au

I'm not going to get too focused on weight reduction, (although I have personally lost 14kgs in the last 6 months) it was just a nice surprise that the car was lighter than I expected.

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