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Pete Gossett (Forum Supporter)
Pete Gossett (Forum Supporter) GRM+ Memberand MegaDork
5/15/20 8:35 a.m.

In reply to Robbie (Forum Supporter) :


 

That pic gives an overview of how it's accomplished.

wheels777
wheels777 SuperDork
5/15/20 12:46 p.m.
Paul_VR6 (Forum Supporter) said:

Post the turbo specs and I'm in for some wagering!

https://grassrootsmotorsports.com/forum/build-projects-and-project-cars/paccwards-the-2020-pacc-racing-challenge-car/166683/page9/  3/4 of the way down the page.

Paul_VR6 (Forum Supporter)
Paul_VR6 (Forum Supporter) Dork
5/15/20 1:23 p.m.

75mm compressor and at or just under 2k lbs but no active traction features I'm guessing 8.551 @ a lot.

wheels777
wheels777 SuperDork
5/17/20 4:41 a.m.
Paul_VR6 (Forum Supporter) said:

75mm compressor and at or just under 2k lbs but no active traction features I'm guessing 8.551 @ a lot.

Our current estimate is 2470-2530#. We'll have a race weight in 2 weeks. 

DeadSkunk  (Warren)
DeadSkunk (Warren) PowerDork
5/17/20 6:44 a.m.

In reply to wheels777 :

Is that estimate with or without Calvin in the seat?

TheV8Kid
TheV8Kid Dork
5/17/20 8:39 a.m.

In reply to DeadSkunk (Warren) :

With

wheels777
wheels777 SuperDork
5/17/20 8:39 a.m.
DeadSkunk (Warren) said:

In reply to wheels777 :

Is that estimate with or without Calvin in the seat?

Low number is with Calvin. High number is the fat driver behind the wheel. 

Paul_VR6 (Forum Supporter)
Paul_VR6 (Forum Supporter) Dork
5/18/20 10:41 a.m.

That LS and trans must weigh a lot more than I thought it would!

wheels777
wheels777 SuperDork
5/18/20 11:34 a.m.
Paul_VR6 (Forum Supporter) said:

That LS and trans must weigh a lot more than I thought it would!

The trans is ridiculously heavy

Paul_VR6 (Forum Supporter)
Paul_VR6 (Forum Supporter) Dork
5/18/20 12:18 p.m.

Must be! Even with an SFI spec cage we're getting the 6cyl down around 2100lbs with driver and adding weight bars to get it to competition weight (2400).

Jerry From LA
Jerry From LA SuperDork
5/20/20 12:48 p.m.

The FWD trans is extra heavy because it has a diff in it.  I'm going to guess the ET and trap will be 10.11 @370 MPH.

KyAllroad (Jeremy) (Forum Supporter)
KyAllroad (Jeremy) (Forum Supporter) UltimaDork
5/20/20 2:05 p.m.

In reply to Jerry From LA :

370? surprise

wheels777
wheels777 SuperDork
5/20/20 2:20 p.m.
Jerry From LA said:

The FWD trans is extra heavy because it has a diff in it.  I'm going to guess the ET and trap will be 10.11 @370 MPH.

Aaah. No. 

Robbie (Forum Supporter)
Robbie (Forum Supporter) GRM+ Memberand MegaDork
5/20/20 2:33 p.m.
KyAllroad (Jeremy) (Forum Supporter) said:

In reply to Jerry From LA :

370? surprise

I don't know where on the track a 370 mph car that only runs 10.11 finally hooks up, but I want to watch it happen. 

Jerry From LA
Jerry From LA SuperDork
5/21/20 8:29 p.m.

Everybody's been discussing how the ET and trap speeds can get skewed using FWD.  So I'm guessing the car will take 4.11 seconds to 60 feet, then run the rest in 6 flat.  Hence the rather high trap speed.  My first guess was 380 but I thought that was too much of an exaggeration.   wink

David S. Wallens
David S. Wallens Editorial Director
6/23/20 8:12 a.m.

Word on the street says that the Nelson family has officially entered the Challenge. Link to enter.

Thank you and looking forward to seeing this one in person. 

Bent-Valve (FS)
Bent-Valve (FS) Dork
6/23/20 10:17 a.m.

Its good to see this pop up when when I open GRM!

Neat build with great information. Check out the first dyno run.

I hope I can be there to see it run!

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