Duncan's V37.......race car?

[nickcorr]

Nice big brake kit!! My JDM Skyline hybrid is fitted with the smaller two piston brakes, but basically the same as my V36 370 SP had...

Following to see what is transferable knowledge to my car. 

[Duncan]

I haven't made a lot of progress on this car, per the NSW section thread I've had other stuff on my mind (and to do list...)

On 09/07/2024 at 11:01 AM, soviet_merlin said:

....'m wondering: can you defeat the collision warning systems and other safety features? I've heard they can cause issues when racing modern cars. Don't want the car to start emergency breaking because you are heading into a corner or towards obstacles too fast.

In theory, the AEB is deactivated along with stability control when you turn off traction control...that is one of the main things to check out, they never sorted it on the A45 AMG which looked good on paper but sucked on track. Since the master cylinder is electronic these days I'm assuming I can't just pull fuses if it intervenes

On 09/07/2024 at 9:16 PM, niZmO_Man said:

...Remember folks, this is a luxury car so 1,700kg isn't heaps .

So, on that....luxury or not is really just a marketing term. While things like fundamental suspension geometry will have an impact, it really comes down to how much weight has to be pushed around the corners, and how much chooch it will have.

In production cars regs there is very little that can be done to increase power, especially for na cars. Inlet is standard, exhaust is free from the head (na) or turbo outlet (turbo) back, ECU is free. The big thing is that for turbo peak standard boost can't be exceeded....but that boost can be made elsewhere through tuning/boost control. A key example of this was Evo X ran something like 1.5 bar standard in the midrange, but it dropped off top end from factory; in prod cars they were allowed to run that boost all the way through the rev range which gave them a big top end advantage compared to factory (I suspect the BMW M cars are similar but haven't seen the data).

This is some examples of the cars the V37 is up against, based on current lap records and class points leaders (table sorted by power/weight)

HSV GTS - 436kw, 1880kg - 232

*F80 BMW M3 - 317kw, 1625kg - 195

*Q50 Red Sport - 298kw, 1680kg - 177

*Civic Type R - 235kw, 1430kg - 164

*M135 BMW - 240kw, 1520kg - 158

*Sirocco R - 209kw, 1390kg - 150

*Evo X - 217kw, 1550kg - 140

Toyota 86 - 170kw, 1270kg - 133

(*again, keep in mind the turbo cars likely have a modified power advantage over na under the rules)

So, I'm not saying the v37 will turn up and dominate all, but it on paper it has 3rd best power/weight of the main cars in the category which is a good start. The Evo is the only 4wd on that list so it seems the traction advantage has been eroded over time (noting, that is very track dependent, Wakefield park is 4wd friendly but Bathurst not so much).

[Duncan]

Having done all those calcs.....Infiniti specs lists V37 Red as weighing 1784, and my rego papers say it is 1680.

Seemed like a very reasonable excuse to buy some corner weight scales and check.

It came in at 1774kg with no driver, about 2/3 tank of fuel and all daily driver stuff on board including space saver spare (more to come on that). Unfortunately it is 57/43 front to rear which is not great and will be hard to improve, so those poor front tyres will be working hard.

Corners:

 

Cross Weights:

 

[HYBRID VL]

are you going to basically gut the interior and remove most things like electric window motors and all heavy addons for weight saving?

i have been really interested in this thread and i love it when you post something up.

is adjustable suspension the only way you can modify the weight shift?