Busch: New NASCAR Next Gen car needs venting and cooling development

Kurt Busch has pinpointed the exhaust system of the Next Gen NASCAR car currently undergoing testing as an area that needs development through its "venting and cooling"

Busch: New NASCAR Next Gen car needs venting and cooling development

Busch, the 2004 Cup champion, has been one of a number of drivers to test the generation seven car that was slated for introduction into competition this year, before being delayed by a year because of the ongoing COVID-19 pandemic.

Chip Ganassi driver Busch, and Martin Truex Jr, the 2017 title winner, undertook testing at Charlotte in November last year on both the oval and 'roval' layouts, with the former praising the new machine's responsiveness in acceleration and direction change on the road course, but was left with concerns when running on the 1.5-mile oval.

Busch highlighted problems with the steering load generated on the oval, describing the issue as an "eyes wide open moment for NASCAR and the teams," before describing how the new twin-exhaust system on the car is a problem he noticed in his stints at the wheel.

"The next biggest bullet point that I marked down was the exhaust heat. It's now a split exhaust system, so it comes out of the left, and the right, which means the exhaust goes right underneath the driver on the left side," the 42-year-old who is set to start his 21st consecutive full-time season in this month's Daytona 500 explained.

"We need better insulation, more venting and a cooler situation [in the car.]

"I have only driven the car in November and in January, and I would say it was already on the hot side of what it felt like after a 25-lap run.

"I am sure we can get that fixed and have more venting and airflow within the car."

Busch also alluded to other new technology on the Gen7 car, in particular the braking package and the independent rear suspension system.

"There are so other many good qualities in the car, with the brakes, the sequential gearbox, suspension, and all kinds of different aero components that I know they can bolt on or take off to make the car as adapt to all the different style tracks.

"[Definitely] lots of positives all the way around, and another full year of development will make a great introductory piece for 2022."

Chris Buescher, who has also completed testing in the new car, echoed Busch's thoughts on the braking system, albeit with less time in the car, and highlighted the impact it could have on the new road courses Cup will race at in 2021, including Austin and Road America.

"It seemed to be very consistent across everybody that has driven that car. It needs some fine-tuning to get a better feel to it to make it more like what we have now - not that we are trying to duplicate what we have, and we realise what we are running [currently] is old technology, but it still needs to have a similar feel, or something along the same lines and I think everybody has felt like it needs work," explained the Roush Fenway Racing driver.

"The big wheels mean a bigger brake package which I think will probably be more significant than anything else," he added.

"We will allow ourselves to have a much better brake package and much better cooling so that we can run hard for a longer period of time.

"Our races are long and in terms of road racing for the most part, we have to pace ourselves in a load of these races.

"I feel like, and I haven't run enough laps to talk intelligently on this, but I feel like we will be able to push harder from the drop of the green flag all the way to the chequered flag on a lot of these road races along the way."

shares
comments
Newman: No memory of Daytona 500 NASCAR crash means no fear

Previous article

Newman: No memory of Daytona 500 NASCAR crash means no fear

Next article

Hamlin explains split duties as NASCAR driver and 23XI team co-owner

Hamlin explains split duties as NASCAR driver and 23XI team co-owner
Load comments

About this article

Series NASCAR
Author Jake Nichol
Why a British prospect is trying to make it in NASCAR Plus

Why a British prospect is trying to make it in NASCAR

There has never been a full-time British driver in the NASCAR Cup. But Alex Sedgwick, who is rising through the stock car ranks, wants that to change and could be a trailblazer for European talents to reach the top echelons of the NASCAR ladder

NASCAR
Feb 28, 2021
How Earnhardt’s death changed American motorsport Plus

How Earnhardt’s death changed American motorsport

It's 20 years since legendary driver Dale Earnhardt Sr died at the Daytona 500, but the legacy of his crash continues today through the pioneering safety work done by NASCAR

NASCAR
Feb 18, 2021
The NASCAR subplots to keep an eye on in 2021 Plus

The NASCAR subplots to keep an eye on in 2021

This weekend's Daytona 500 kickstarts a NASCAR Cup season that promises plenty of intrigue courtesy of new owners and a refreshed calendar. Here's what you need to know ahead of the new season

NASCAR
Feb 12, 2021
How a second-chance NASCAR ace is rebuilding his career Plus

How a second-chance NASCAR ace is rebuilding his career

From a disgraced NASCAR exile, Kyle Larson has been given a shot at redemption by the powerhouse Hendrick Motorsports squad. Replacing seven-time champion Jimmie Johnson is no easy billing, but Larson has every intention of repaying the team's faith

NASCAR
Feb 11, 2021
Autosport's top 5 NASCAR machines Plus

Autosport's top 5 NASCAR machines

The American stock car scene is more famous for its close racing and occasional punch-ups, but there have been some fantastic machines too. As part of Autosport's 70th anniversary celebrations in 2020, we picked out five of its best

NASCAR
Jan 3, 2021
Why NASCAR's latest second-generation champion is just getting started Plus

Why NASCAR's latest second-generation champion is just getting started

Chase Elliott's late charge to the 2020 NASCAR Cup title defied predictions that it would be a Kevin Harvick versus Denny Hamlin showdown. While the two veterans are showing no signs of slowing down, Elliott's triumph was a window into NASCAR's future

NASCAR
Nov 17, 2020
Why Johnson’s playoff failure won’t tarnish his legacy Plus

Why Johnson’s playoff failure won’t tarnish his legacy

The last season of a retiring NASCAR great has shown promise, and may have resulted in another playoff push without small issues outside his control. 2020 won't be the year Jimmie Johnson would have wanted, but it won't be what he is remembered for

NASCAR
Sep 3, 2020
Why a Le Mans winner is heading into the “unknown world” of NASCAR Plus

Why a Le Mans winner is heading into the “unknown world” of NASCAR

Comparing Porsche's 919 HYBRID LMP1 to NASCAR is motorsport's equivalent of apples and oranges, but this weekend one of Weissach's top works aces will pit his skills against the regulars and revive the tradition of the 'road-course ringer'

NASCAR
Aug 13, 2020