Making the acr even faster. Can it be done?

[theboom]

Me and a friend were arguing about cars vs motorcycle around a track. We found the lap record at laguna seca for a motorcycle is 1'20.7 and in world super bike with a 1'21.568. I know that that is a all out racing bike for the former and a fairly high modified one for the latter but I have always heard that cars are much better around a track. Then we started to argue about what could be done to make the acr faster. Im pretty certain that both of the bikes times were set with qualifying tires so you can put those on the car. The tires that come on the acr are amazing as we all know but you can't really compare them to a tire that is designed to only last for 2-3 laps or so. The tires could get you what 1-2 seconds? Or am I way off with that estimation? Next is the driver. Randy Pobst lapped laguna seca in 1'28.65. While randy is an amazing driver you also cant compare him so someone who is actively racing the same bike over and over every week because randy only gets a limited amount of time with each car. On that note why did they get Randy to lap the car a laguna and not the factory driver? Would he not have done even better since he knows the car perfectly? So add maybe another 1-2 seconds with the best of the best drivers like the ones on the bikes that set the records? Or again am I off here? Last major thing i could think of is power. The acr puts it power down flawlessly and then some. It could easily handle a great deal more. I think it would help greatly given how much its downforce affects high end acceleration as made obvious in the much lower top speed than the base viper. Maybe in the 900 range or maybe even 1000? Its just puts it down so well with the tires and downforce. So a couple seconds there.

So do you thing all of this would add up to a as good or better lap time than the bikes? Or are we going to have to start shedding weight like the bikes do?

[Fatboy 18]

Wonder if you could fit a DRS system like they have on F1 to reduce drag when needed?

[Bruce H.]

nm..

[BDZ1984]

VE heads/Cam, VE suspension, Slicks, +driver mod maybe down to 1:24 range...... maybe....

[gcrain]

On that note why did they get Randy to lap the car a laguna and not the factory driver? Would he not have done even better since he knows the car perfectly?


I assume they felt experience with the track is a greater asset than experience with the car. All of the evidence I am aware of would indicate this is true.

[darrahc]

This doesn't have anything to do with making the ACR faster but it is a pretty cool video of Guy Martin (insane rider from Isle of Man) racing David Coulthard in an F1 car at Silverstone. The end is pretty interesting seeing only Guy and his mechanic loading his bike up in a box truck while Coulthard has an entire F1 crew supporting him.

http://www.roadandtrack.com/motorsports/videos/a28656/f1-superbike-race-guy-martin-david-coulthard/

[serpent]

Not sure if it can be done. The GTLM cars are doing 1:23s, it would take a lemans prototype to go faster.

Source from 2014 the #93 SRT Motorsports Viper:
http://driveviper.com/forums/archive/index.php/t-3457.html

[Augdog1964]

It could have been faster...

Add a paddle shift tranny...
Boost HP to 750+ to retain the top dog of Dodge status...

[mjorgensen]

GTLM cars are 500hp, better question would be what does a GT3R (690+) non restricted do there?

[Snakebit10]

Not sure if it can be done. The GTLM cars are doing 1:23s, it would take a lemans prototype to go faster.

Source from 2014 the #93 SRT Motorsports Viper:
http://driveviper.com/forums/archive/index.php/t-3457.html

Yes but GTLM's are severely restricted Vipers. A street Viper ACR-E with H/C, full bolt-ons and tune, hossiers, a diet and a race driver mod like Farbacher etc could probably get pretty close to that imho. But to beat 1:20 that would be a huge stretch. An unrestricted GTLM Viper should easily do it imho.

EDIT: Took too long to post hehe. Mark beat me to it...

[serpent]

Ahh yes, I forgot how much they detuned those motors.

For reference I found this on the previous race Viper (Viper GTS-R from 2000):
http://www.racingsportscars.com/results/Laguna_Seca-2000-10-15.html

The GTS-R had a fastest lap of 1:24.595

Heres an article on how much power the GTS-R puts down, although this is from 1997, maybe the rules changed in 2000?
http://www.motortrend.com/news/1997-dodge-viper-le-mans/

Edit:
I know technology has advanced in the passed 15+ years, but getting 1:20s in Laguna Seca is a bit of a reach. The 1:33 time done by the Gen IV ACR is a blistering lap time. The Gen V ACR doing 1:28 is just insane.

I just looked at the times done by previous race cars (source: www.racingsportscars.com), and sub 1:20 is LMP territory!!! Anyone remember the BMW V12 LMR? The fastest lap time that was doing was 1:18.8.

[v10viperbox]

VE heads/Cam, VE suspension, Slicks, +driver mod maybe down to 1:24 range...... maybe....

1:24 with that is a solid maybe.

1:20 is a insane time for a street car, as an example a Ferrari F2003-GA F1 car did a ~1:06 and hold the track record.

[38D]

The best way to turn faster lap times would be shed weight. Every 100lbs should be ~1 sec at Laguna.