2015 Mustang Ecoboost K/SA?

HawkBrosMav · 06-15-2018, 04:04 PM

Quote:

Originally Posted by Jim Caughlin

I am familiar with Ecoboost / Duratec engines, I am not aware of any block strength issues. There are a couple of minor weak areas that need attention but very easy and inexpensive to fix. What do you know that I don't?

Regarding the damper, I guess one persons pulley is another man's damper. I have one of these in my shop and it looks like a pulley to me. That being said, the Ford 2.3 single OHC motor doesn't technically have a damper either. Mine does because I retrofitted an SBC unit to it but not the way it comes from the factory.

Jim Caughlin
SS 6019

Jim,
As mentioned my research has been minimum at best. My point is I've read about issues some have had and without having first hand knowledge, as you have, one should probably look into these potential issues prior to encountering them.

I have been told by at least 4 people, I've discussed this combo with, that the stock intercooler has heat soak issues that would prevent this combo from being a viable car outside of class. Looking in the rule book there is nothing stating you must run the stock intercooler so this seems to be a very easy fix, just run a bigger one...

I don't want to pretend to be any kind of expert.. I've never laid my hands on one of these engines. I just was passing info on that I have found as I too am interested in running this motor someday. If we can't get the SS/GT rules changed I'll have less to worry about in terms of limitations to my combo, most likely will never have this engine in a 2015 mustang if I do it.

Brad

6130 · 06-15-2018, 04:44 PM

Quote:

Originally Posted by HawkBrosMav

Looking in the rule book there is nothing stating you must run the stock intercooler so this seems to be a very easy fix, just run a bigger one...

Are you saying that I can run a larger aftermarket intercooler in Stock Eliminator?

HawkBrosMav · 06-15-2018, 08:32 PM

Quote:

Originally Posted by 6130

Are you saying that I can run a larger aftermarket intercooler in Stock Eliminator?

I'm saying the rulebook reads this:

INTERCOOLER
"Intercooler tanks must be located in the engine compartment"

I'm not sure how they could enforce a ruling of the intercooler having to remain the factory unit with this rule...

JHeath · 06-15-2018, 08:50 PM

Quote:

Originally Posted by HawkBrosMav

I'm saying the rulebook reads this:

INTERCOOLER
"Intercooler tanks must be located in the engine compartment"

I'm not sure how they could enforce a ruling of the intercooler having to remain the factory unit with this rule...

I believe this is meant for the supercharged CJ, Copo, and Drag Pak cars.

HawkBrosMav · 06-15-2018, 09:22 PM

Quote:

Originally Posted by JHeath

I believe this is meant for the supercharged CJ, Copo, and Drag Pak cars.

That doesn't change the fact that the rule is written the way it is and says nothing about an intercooler remaining factory.

ALMACK · 06-16-2018, 02:32 AM

Quote:

Originally Posted by JHeath

I believe this is meant for the supercharged CJ, Copo, and Drag Pak cars.

^^ I would tend to agree.
It seems to relate to the air to water intercoolers..

6130 :

Might want to get clarification from NHRA on the ic rule if you want to step up to a larger than stock IC.
My gut feeling is that they will say it has to be stock.

6130 · 06-16-2018, 12:51 PM

Quote:

Originally Posted by ALMACK

^^ I would tend to agree.
It seems to relate to the air to water intercoolers..

6130 :

Might want to get clarification from NHRA on the ic rule if you want to step up to a larger than stock IC.
My gut feeling is that they will say it has to be stock.

Yeah, I would suspect the same.

6130 · 06-16-2018, 02:33 PM

Okay, Alan, let me bounce this off of you, regarding tires, wheels, and gearing.

The Ecoboost Mustang won't take anything smaller than 17" wheels over the stock front and rear brakes (18" in front, if it's a Performance Package car).

The 6R80 cars have 3.31 rear gears (Performance Package 6R80 cars get 3.55 rear gears). 4th gear in the 6R80 is 1.14, and the stock tires are 27" tall. Ford says the horsepower peak is at 5,500 rpm. 110 mph through the lights with 3.31 rear gears, a 1.14 4th gear, and a 27" tall rear tire, is just a little over 5,000 rpm (just about 5,500 rpm for Performance Package 6R80 cars).

I'd want to keep the front tires the same height as the rear, to avoid any problems with the ABS system (don't want to smoke the tires in the lights). I wouldn't want to go any shorter than the stock 27" tires, because I wouldn't want to lose any roll-out in the front. And I wouldn't want to go any taller than 27", because I wouldn't want to lose any torque multiplication or put the engine further from it's power peak through the lights, nor would I want to have to change out the ring & pinion to offset for taller tires.

NHRA says no more than 9" tread width in the rear, and no less than 4.5" in the front.

I'd like to avoid putting radials on one end and bias-ply on the other.

And if I was going to try to save the expense of a truck and trailer, I'd want the tires to be DOT-legal. That would also save me the trouble of having to change them at the track.

I don't think the wheels would need to be anything fancy- again, it looks like these cars will run under without a lot of work. For example, there are Race Star wheels available in 17x10" and 17x4.5" sizes.

What are your thoughts on tires and wheels for this purpose?

06-16-2018, 02:33 PM	#8
6130 Member Join Date: Jul 2012 Location: Texas Posts: 409 Likes: 295 Liked 117 Times in 50 Posts	Re: 2015 Mustang Ecoboost K/SA? Okay, Alan, let me bounce this off of you, regarding tires, wheels, and gearing. The Ecoboost Mustang won't take anything smaller than 17" wheels over the stock front and rear brakes (18" in front, if it's a Performance Package car). The 6R80 cars have 3.31 rear gears (Performance Package 6R80 cars get 3.55 rear gears). 4th gear in the 6R80 is 1.14, and the stock tires are 27" tall. Ford says the horsepower peak is at 5,500 rpm. 110 mph through the lights with 3.31 rear gears, a 1.14 4th gear, and a 27" tall rear tire, is just a little over 5,000 rpm (just about 5,500 rpm for Performance Package 6R80 cars). I'd want to keep the front tires the same height as the rear, to avoid any problems with the ABS system (don't want to smoke the tires in the lights). I wouldn't want to go any shorter than the stock 27" tires, because I wouldn't want to lose any roll-out in the front. And I wouldn't want to go any taller than 27", because I wouldn't want to lose any torque multiplication or put the engine further from it's power peak through the lights, nor would I want to have to change out the ring & pinion to offset for taller tires. NHRA says no more than 9" tread width in the rear, and no less than 4.5" in the front. I'd like to avoid putting radials on one end and bias-ply on the other. And if I was going to try to save the expense of a truck and trailer, I'd want the tires to be DOT-legal. That would also save me the trouble of having to change them at the track. I don't think the wheels would need to be anything fancy- again, it looks like these cars will run under without a lot of work. For example, there are Race Star wheels available in 17x10" and 17x4.5" sizes. What are your thoughts on tires and wheels for this purpose?