2015 Mustang Ecoboost K/SA?
 

If I'm reading it right, the 310-horsepower engine is factored by NHRA at 264 horsepower for Stock Eliminator. At 12.78 pounds per factored horsepower, it would be a natural J car, but I was looking at the K (13.0 pound) class because I'm wondering if the combo is one of those turbo combinations capable of making index without too much work.

13 pounds times 264 horsepower, plus 170 pounds, equals 3,602 pounds minimum weight for K.

The K/SA index is 12.65, and the record (which I would not be shooting for) is 11.39 @ 114.02.

Is my math right, so far?

Lund Racing has been 11.03 @ 122 in one with stock engine/turbo/manifolds/trans/converter, on street tires, in what appears to be a full-weight street car with air-conditioning and a license plate.

Does this combo look like something worth exploring?

Re: 2015 Mustang Ecoboost K/SA?
 

NO! This is an awful combination.. please please stay away...;););):D:D

Re: 2015 Mustang Ecoboost K/SA?
 

Something tells me you're not being entirely forthright with me on this. ;)

Re: 2015 Mustang Ecoboost K/SA?
 

Go run a 11.20 and really shatter the record!

Re: 2015 Mustang Ecoboost K/SA?
 

and ...... 11.03 @ 122 with the factory IRS... really a true stocker lol ... no sissy straight axle conversion... I see some 2010 and newer camaros and challengers,2015 and newer mustangs in the 8's and 9's retaining the factory independent rear suspensions (with upgrades of course) .. maybe its time to rescind the rear axle conversion rule for say 2008 and newer traditional stockers, (after all it's not 1965 anymore, some one in here did say "it's 2018" ) and keep the COPO,DRAG PACK and COBRA JET back halved 4 link FS cars in FS and SS, not prowling around in regular stock classes in disguise ......

Re: 2015 Mustang Ecoboost K/SA?
 

Lol. Not looking to set the world on fire. Not even looking to be able to stand a reasonable chance of winning a heads-up race against another K/SA car. Just kind of spit-balling a little foot-brake retirement project, that would allow me to be able to have some fun at local class races. If it would reliably make index, I'd probably be happy with it.

It looks like you can buy these things for not a lot of money, the current factor appears to be...ahem..."advantageous", and a racing operation that doesn't require a truck and trailer could conceivably be simpler and less expensive.

Re: 2015 Mustang Ecoboost K/SA?
 

Needs a roll bar at 12.65..Doesn't for bracket racing..One of NHRA's all time finest rules

Re: 2015 Mustang Ecoboost K/SA?
 

Yup. Anything M and faster. 16.1 harness and 3.2A/1 jacket/pants also.

I'd like to be able to find a commercially-available NHRA-legal 1-3/4"x.083 chrome-moly 6-point roll bar for one of these.

Re: 2015 Mustang Ecoboost K/SA?
 

I bet someone will show up at Indy with that combo.

Re: 2015 Mustang Ecoboost K/SA?
 

S&W Race Cars has the 8 pt kit in mild steel


http://www.swracecars.com/store/MUST...7=11-3094.aspx


The quickest 4 cylinder Stocker in NHRA Stock Eliminator right now is 11.39 (Marty Buth N/SA )

Re: 2015 Mustang Ecoboost K/SA?
 

Yes, I'm sure you can fix it by throwing money at it. Still a stupid rule for a high 12 second car.

Re: 2015 Mustang Ecoboost K/SA?
 

Thanks, Marty. :)

Looks like there is a pull-down tab where it can be upgraded to 1-3/4"x.083" Chrome-moly tubing for an additional $353 ($575 total).

And I could probably just leave the two short diagonals out, leaving me with a lighter (but still NHRA-legal) 6-point roll bar.

Re: 2015 Mustang Ecoboost K/SA?
 

I cannot disagree with you on that, but it is what it is...

Re: 2015 Mustang Ecoboost K/SA?
 

Watson Racing might have a roll bar/cage kit.

Re: 2015 Mustang Ecoboost K/SA?
 

Wolfe Racecraft builds the nicest and best fitting roll bar for the Mustang with a lot of options.


http://www.wolferacecraft.com/detail.aspx?ID=277

Re: 2015 Mustang Ecoboost K/SA?
 

They better bring an extra block or two. Factory block doesn't like the Turbo.

Re: 2015 Mustang Ecoboost K/SA?
 

If I was going to build one I would go ahead and put the full roll cage in it, its going to end up there any way.

Re: 2015 Mustang Ecoboost K/SA?
 

Thanks. I took a look.

Watson makes a chrome-moly 6-point bolt-in roll bar, but it's 1-5/8" tubing, so it wouldn't be NHRA legal, and it has a road-race type diagonal within the main hoop, which is unnecessary for this purpose.

Re: 2015 Mustang Ecoboost K/SA?
 

This car would never go fast enough to need a roll cage.

As Mark pointed out, it's unfortunate that NHRA even requires a roll bar (along with a 3.2A/1 suit and 16.1 harness), for a mid-12 second car.

Re: 2015 Mustang Ecoboost K/SA?
 

Perhaps a good reason for a roll bar in a "Slower Car" would be racing against 170mph "Stockers"

Re: 2015 Mustang Ecoboost K/SA?
 

Most logical Spock, "Live Long & Prosper!" :p

Re: 2015 Mustang Ecoboost K/SA?
 

What is the ET limit on a bolt-in roll bar? Watson and others have really nice kits that bolt in for these cars.

Re: 2015 Mustang Ecoboost K/SA?
 

Re: 2015 Mustang Ecoboost K/SA?
 

i think the rulebook says a roll bar has to be welded to the floor. i could be wrong

Re: 2015 Mustang Ecoboost K/SA?
 

Part of the reason I put a 6 point in my Q/SA 4 cyl Stocker

Re: 2015 Mustang Ecoboost K/SA?
 

Or welded to 6" x 6" plates attached with (4) 3/8" bolts.
The floorpan is sandwiched in between the plates

Re: 2015 Mustang Ecoboost K/SA?
 

First I have heard of that.
There are some in the 9's now but I have never heard of an aftermarket block for the 2.3 EB.

Low 11's stock longblock:

https://www.youtube.com/watch?v=ii_fkXhg73Q

Re: 2015 Mustang Ecoboost K/SA?
 

Is there a particular reason it has to be chrome moly and not mild steel ?

Re: 2015 Mustang Ecoboost K/SA?
 

It doesn't HAVE to be, but this thing would be a little bit of a porker, so saving an extra 20 pounds of steel seems like a good thing to do. :)

Re: 2015 Mustang Ecoboost K/SA?
 

Wow.

This 2015 Ecoboost Mustang with an automatic ran UNDER the K/SA index, hundreds of pounds overweight and stone stock right down to the tires, except for an aftermarket "tune" that picked up 64 horsepower:

https://www.youtube.com/watch?v=aJn75u9C3SQ

Re: 2015 Mustang Ecoboost K/SA?
 

That's not just a stock long block- that's with the stock turbo too.

And it's also got the stock intake/exhaust manifolds, stock throttle body, stock torque converter, stock transmission, and stock rear end.

The car isn't quite legal for Stock Eliminator, but dang, if I could even get one to run a full second SLOWER than this guy's 11.03 @ 122, I'd still be more than six tenths under the K/SA index.

Re: 2015 Mustang Ecoboost K/SA?
 

I'm glad to see this combo getting some attention. I submitted it before leaving Ford and after some back and forth with Pat Cvengros (who read over the TI like a hawk!) it was accepted pending a sample turbo. I had the turbo in a box ready to ship and asked for it to be sent on my last day. Not sure if it took them 18 months to ship it or if NHRA hadn't gotten around to putting it in the guide but it's nice to see it there now.

Jake Sealey was looking at running it as a SS/GT combo but I think he went 5.4L instead. I know Drew Skillman had been asking about it as well for a Stocker but that was years ago. I had a paper to build a one-off 2016 CJ with Ecoboost with giant turbo and ultra lighweight. I figured an 8.9 ET 4-banger showcar at SEMA /PRI would grab lots of attention.

I'm guessing you guys figured it out but 264 is 85% of 310. That was the agreement NHRA made for these new cars. Unfortunately they would not go back and alter the 2011-2014 Mustang GT's from 385hp.

And regarding IRS I had many conversations with NHRA tech about that. My opinion was that because all new muscle cars have IRS they should be required for street car stockers and the package cars would still be submitted and require approval for FS classes. I agree that a late model VIN'd Stocker should not get a stick axle conversion.

Re: 2015 Mustang Ecoboost K/SA?
 

If only you didn't have run a V8 in SS/GT. We still have the engine, just need a body to make a stocker or a rule change to run GT :D.

Re: 2015 Mustang Ecoboost K/SA?
 

Yep, no 4 cylinders in GT, I would be running one if it was legal.

Jim Caughlin
SS/ES 6019

Re: 2015 Mustang Ecoboost K/SA?
 

Ah, I recall this conversation now about SS/GT and 4-cylinders.

Do we know why that rule exists? Has anyone requested that NHRA change that? Every manufacturer has big power turbo 4's and 6's now.

Maybe Mike D at Ford could take up the charge to change that.

Re: 2015 Mustang Ecoboost K/SA?
 

It looks like your talk with NHRA on the newer cars had some effect after all Jesse.

Too bad the OBD II cars could not get a break, but at least all the newer cars entering the classification guide from now on will get the 85/85 ratings

Re: 2015 Mustang Ecoboost K/SA?
 

For the last 5 years I have wanted to be able to put my 2.3Turbo engine in another body and run SS/GT

Re: 2015 Mustang Ecoboost K/SA?
 

Thank you.

And yeah, I know about the 85% thing.

I'm thinking that the 2105 cars are now almost four years old, and could probably be picked up pretty reasonably.

The "Performance Package" car comes with bigger heavier brakes, stiffer springs, and a couple of other odds and ends that add weight, so I was thinking of a non Performance Package" car.

Like I said, I'm just kind of spit-balling here, but I think a 3" mandrel-bent cat-less downpipe dumping open under the car and an appropriate "tune" would be the only horsepower-increasing modifications needed.

The required safety equipment we've already discussed, and since it needs a roll bar and 16.1 harness, maybe a pair of lightweight racing seats. Other weight-loss areas might include jettisoning the spare tire, jack, lug wrench, rear seat, exhaust system, front sway bar, radio speakers, carpet padding, sound insulation, and a few other odds and ends. It seems apparent that they will run under index overweight, with power brakes, power steering, and air-conditioning systems intact.

I've looked at smaller/lighter brakes, but now I don't think the car even needs them to be able to run under. So maybe a set of 17" Race Star wheels to clear the stock brakes, DOT-legal front runners, 9" wide DOT-legal drag slick type tire in the back, and I'd even be able to leave the jack at home. :)

Re: 2015 Mustang Ecoboost K/SA?
 

Should be able to run 1 second (or more) under for less than 30K including the price of the car and required Stock Eliminator safety equipment.

When the 2.3 EB Mustang came out in the guide a few weeks ago, I looked into what it would take to run 1.00 under.
Then I realized that someone is going to blast the index with that combo and in less than a year it will be in F or G Stock

Re: 2015 Mustang Ecoboost K/SA?
 

I did push for all OBD-II cars to get a break. I believe you and I emailed about it several times. But unfortunately it didn't happen and you have to pick your battles. 15% off going forward seemed reasonable although I would have liked 18 or 20% better. haha.