Viper Build Thread

13COBRA

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This winter is going to bring a lot of BIG changes for the ole' girl. I wanted to have a build thread that detailed from beginning to end. In order to do that, I need to back track a little bit.

When I first got the car, the goal was to continue running TT1 with NASA which I had been running with my Gen IV ACR. "Unfortunately" it dyno'd high enough that between the power, weight, slicks, and sequential it pushed me out of TT1. I didn't want to cut power, run 200TW tires or add 250# in weight...so I settled in TTU.

When I first got the car:

1665584210061.jpeg


I wanted to add my own livery as I didn't like this one much. I ended up copying the 1998 Oreca livery off of the Viper that won at Le Mans, excuse the TT1 decal...it was replaced shortly after.

1665584270668.jpeg


Original dyno:

1665584314519.png



I ran the second half of 2020 in this configuration. Winter of 2020 I added front canards to give the front end a little more bite. The 2021 season was primarily used to get used to the car. It was definitely an adjustment from the ACR. No brake booster, the brakes needed a lot of heat to bite, turn in was different, being so much lighter the back end wanted to dance around quite a bit.

At the end of 2021 we rebuilt the Penske 8765 3-way shocks, HUGE difference. We also raised the wing 6-7" in order to give it some cleaner air to produce downforce. We did a fresh alignment and corner balance. We ended up taking out a ton of camber out of the front and rear. We were running a -3.5 and -2.4...ended up dropping it to -2.2 and -1.2, it handled a lot better. There was a little pushing through the corners, but I could attack them harder without fear of the rear end coming around.

1665584557915.jpeg


Winter of 2021 brought more power. We did a heads/cam/throttle body and tune and were able to pick up 85rwhp and about 30 ft/lbs torque. Talk about a big difference. I was able to run about 10 mph faster on longer straights. Pulling out of corners was a breeze, almost taught some bad habits of being a point and shoot car rather than a carrying speed car. It's amazing how balanced it is in that aspect of racing.

2022 has been an amazing year. We've set 5 track records...1 at every track I've gone to this year. Hard to beat that. Damn Feras Qaurtomy is the only guy that's beaten me this year....and it was like bringing a slingshot to a machine gun range going against that dude.

This coming weekend is the NASA Central Region Finals...then off season begins. First track day will be in the end of January at COTA with a CHIN Track Day. Hoping to run into @Goose17 down there in his rocket of a GT500.

Before that...big changes are coming.

I'm working with a really good buddy of mine, Brad Perkins at Chicane Motorsports out of Olathe, KS. We are going to work jointly with Zebulon MSC out of Colorado, and AJ Hartman Aero. We are going to go with a full Time Attack aero package. Splitter, diffuser and dual element wing. Big everything. We're going to max out the aero to the power : weight and go as big as we can without sacrificing too much top end speed. I am going to keep my current setup for when I go to Rovals or high speed tracks; more of a low downforce/low drag kit...lower anyways.

THEN I'm going to be working with Geartronics out of the UK to get their paddleshift system installed and tuned for my car. The EMCO sequential is SOLID, but I want both hands on the wheel while going through corners. The system will include a rev match blip for downshifts and ignition cutting for flat foot upshifting. It'll be FAST.

We're going to rebuild the brake calipers and air jacks this off season as well.


More pictures coming in the coming months. The diffuser is 4-6 weeks out, and the wing/splitter is 8-10 weeks out.
 

Serpent

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Isn't Prefix working on a stroker 9.2L extreme motor? Or was that AC performance?
What motor is currently in the CC?
 

13COBRA

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Isn't Prefix working on a stroker 9.2L extreme motor? Or was that AC performance?
What motor is currently in the CC?

It's an 8.3L.

If I swap motors, I'm going with Exotic Engines out of California and putting in one of their destroked 8.0Ls that rev to 8500rpms and have 800rwhp
 
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Serpent

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It's an 8.3L.

If I swap motors, I'm going with Exotic Engines out of California and putting in one of their destroyed 8.0Ls that rev to 8500rpms and have 800rwhp
Thats gonna be sick, Calvo built a gen 2 with a higher revving v10, it was so bad ass. I wish more companies built these engines. So cool.
 

13COBRA

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Thats gonna be sick, Calvo built a gen 2 with a higher revving v10, it was so bad ass. I wish more companies built these engines. So cool.

Calvo didn't build that motor...Exotic Engines did.
 

Recon

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That is a nasty track weapon you have, Nick. The upgrades will make it even better. How available is that 8500rpm 8.0L V10? I bet that noise is heavenly.


Sent from somewhere in the twilight zone…
 

13COBRA

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That is a nasty track weapon you have, Nick. The upgrades will make it even better. How available is that 8500rpm 8.0L V10? I bet that noise is heavenly.


Sent from somewhere in the twilight zone…

 

13COBRA

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Here is one from Exotic engines. I would love/kill to have a copy of that car.


He priced it to me 2 years ago for $275k. You don't have to kill anyone, just write a check haha

I decided I could make mine as fast/faster for less money, and I prefer the looks of the Comp Coupe over the Gen II.
 

01yellercobra

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Will the Geartronics set up work in conjunction with the current ECU or will it have a stand alone set up?
 

01yellercobra

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I'm interested in how it works out for you. A friend of mine wrecked his race car a few weeks ago and now is considering going into the next one pretty deep. I believe he mentioned Sedavo for the transmission.
 

13COBRA

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I'm interested in how it works out for you. A friend of mine wrecked his race car a few weeks ago and now is considering going into the next one pretty deep. I believe he mentioned Sedavo for the transmission.

Sadev. Good stuff! I have 0 complaints about my EMCO.
 

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