DAYTONA BEACH, Fla.

Jack Roush Jr. and Billy Johnson captured the BMW Performance 200 GRAND-AM Continental Tire Sports Car Challenge season opener on Friday afternoon, the prelude to this weekend’s historic 50th Anniversary Rolex 24 At Daytona.

Roush Jr. and Johnson, who shared the wheel behind the No. 61 Roush Performance Mustang Boss 302 R, captured the 58-lap race edging the No. 48 Fall-Line Motorsports BMW M3 and drivers Charles Putman and Charles Espenlaub.

“I love this track,” said Roush Jr., the son of NASCAR team owner Jack Roush. “There is a lot of history. It’s a very special race to win. I can’t be happier.”

LINK TO ORIGINAL

 

Guess they were able to keep it running cool without a Tiger Racing hood.

 

Nice

 

Great win for the Boss and a great start for the Roush team!

BTW, they upgraded to the new '13 front end for this race/season.

 

The Tiger hoods were designed for additional downforce; improved engine cooling was a side benefit. They're not allowed in this series. They use a larger radiator and an air-to-oil cooler to keep temps down in the race car

 

Very thrilling to hear the Mustang got off to a good start to the racing season by winning the first race. What a good way to debut the 2013 Mustang. Congratulations to Roush racing. BTW , as I type this, the Ford powered protoypes are running one two in 24 hour race after one hour.

 

 

Taken directly from Tiger racing web site......seems to me its primarily for cooling.

The hood is a unique design where louvres/vents are placed in the Cobra hood to give maximum heat evacuation from the engine compartment. At the front of the louvres there is a nice radius rise to provide the proper low pressure area and pull air flow out of the engine compartment. This has proven to reduce under hood temperature and allow the engine to run cooler.

 

This awesome news!!

GO FORD GO

GO RED,WHITE AND BLUE!!

 

Rick,

A lot has been written about this hood, and why it’s on the Boss 302S and its benefit.

The number 1 reason is down force.

There is an inferred drag reduction as well as negative lift i.e. downforce.

The air is flowing through the warm radiator and has a clear path to exit above the hood instead of packing up under the hood causing lift and drag as well as a mass of hot air not allowing efficient heat transfer from the engine bay.

Number 2 is heat reduction.

Call Paul Brown, he can confirm.

Also the reason the Grand-Am Continental GS Boss 302Rs don't use this hood is Grand-Am doesn't allow it.

 

Going by what he was quoted as saying at SEMA.....

Post #8
https://themustangsource.com/f813/oi...emount-501721/

 

These are heavy cars relatively speaking for track use, more so in the front....they are not Formula 1 cars ,... I dont buy the argument of increased down force effecting our cars in any manor with a vented hood....Sorry......speaking in terms of my aeronautical experiance here.... That leaves cooling,......and why would it be cooling that is prominent in the dialog explaning what it is and what it does right from the guys who make it.....the only mention of pressure drops or anything that can be mistaken as down force is the pressure drop created by the airfoil vents.(much like the pressure drop of a wing)...that create a low pressure zone that helps evacuate the air under the hood......theres just not much air pressure building up in the engine compartment when the air first has to flow thru a radiator.

Please understand.....not trying to create a contraversy here.....and am seriously considering buying the hood myself as I expect cooling issues here in Texas with 100 degree temps.

 

I understand your point and was skeptical that much time could be made up from reducing lift from the factory hood as I stated here:
Post #111
http://bossmustangsonline.com/boss-3...ilability/105/

I was just going by what was said, however I didn't hear it first hand. I bought it mostly for cooling as well, but in addition am hoping for improved aero. When I talked to Paul on the phone about it he said they are developing a wing that's between the 302S wing and the Laguna Seca wing since the increased downforce from the hood can make the car a little tail happy. He obviously contends that there's more downforce produced on the front end from the hood. I'm not sure how fast you've gotten your Boss but when I've been up around 150 at BIR, that factory hood is lifting big time.

 

I'll just agree to disagree with you guys. I do believe though that these cars do run hot and need some help.....The hood along with looking good will also help alot in keeping temps down.

 

You're not disagreeing with us you're disagreeing with the guys from Ford Racing and Tiger Racing, the guys that designed, spec'd and race with the hood.

 

True; but I'm the one that he spoke to @ SEMA. I'm old....but my hearing is still good. Initial reason for developing the hood was as stated by Gary. Increased cooling was an extra benefit. Oil cooling set-up does all the "heavy lifting" for reduced engine temps.

 

I took a few shots yesterday:

 

It has been explained here but the gained downforce is from expelling the air trapped by the hood at high speed. I can tell you right now at about 135 mph (maybe even sooner) and up you can see the hood lifting and dancing all around from all the air trying to escape. This is lifting the front of the car as well as causing a lot of drag. The hood doesn't cause downforce in way a aero pieces do....

Just because these cars are heavy does not mean in anyway that aero and downforce cannot be applied and have great effect on the car.... I can tell you right now the front splitter on the LS makes a big difference when you start adjusting it. From talking to engineers at Ford Racing as well as Tiger Racing (the World Challenge champions and maker of the 302s hood and rear wing) I shouldn't be surprised if I have an imbalance in downforce once I add the 302s hood with the front splitter. It really makes that big of a difference....

 

Nice pics!

 

at least you can see what he is doing with all that cash he is making from selling crappy mufflers....
Take it easy I'm just kidding