2015 Mustang Ecoboost K/SA?

[Jim Caughlin]

Originally Posted by Glenn Briglio

Anyone look at NHRA engine blueprint specs ? Max compression 15.52 to 1. Are there any errors in those specs?

I wish someone could tell me how to do that! I'm building a NA version of this motor and there isn't enough dome and head milling to get that under any condition.

[Tom Broome]

Originally Posted by Jim Caughlin

I wish someone could tell me how to do that! I'm building a NA version of this motor and there isn't enough dome and head milling to get that under any condition.

The Specs say a chamber volume of 39cc, how big are your heads?
If you follow the Specs and do the math, it comes up at 13.98. Not sure where the max compression of 15.52 comes from.


I'm with you, I don't expect you will get 15:1 with around stock bore and stroke. To get there would require a TDC volume of around 40cc. Tough to do with a deck clearance that seems more workable than the Spec of .023.

[6130]

Are you guys building 2.3 engines for Stock Eliminator?

[Glenn Briglio]

Originally Posted by Jim Caughlin

I wish someone could tell me how to do that! I'm building a NA version of this motor and there isn't enough dome and head milling to get that under any condition.

So is this a dished or domed piston?

[Jim Caughlin]

Originally Posted by Glenn Briglio

So is this a dished or domed piston?

No, this is a motor for SS/Modified. Pretty much all of the dome and smallest combustion chamber and still getting enough valve relief gets you in the 15:1 range. I currently run the 2.3 Ford single cam engine but am in the process of building a Duratec motor which is an Ecoboost without the turbo.

Jim Caughlin
6019 SS/ES

[Glenn Briglio]

Originally Posted by Jim Caughlin

No, this is a motor for SS/Modified. Pretty much all of the dome and smallest combustion chamber and still getting enough valve relief gets you in the 15:1 range. I currently run the 2.3 Ford single cam engine but am in the process of building a Duratec motor which is an Ecoboost without the turbo.

Jim Caughlin
6019 SS/ES

Is the stock piston from Ford a dished or domed piston ?

[Bobby Lundholm]

We just got a 2018 Ecoboost 6 speed in today at work. K/S?

[Dan Fahey]

AND this Mustang is one of the whole new generation of Stockers.

More to come..

D

[6130]

Originally Posted by Bobby Lundholm

We just got a 2018 Ecoboost 6 speed in today at work. K/S?

The classification guide does not list the 2018 Ecoboost Mustang, so if you wanted to run it, I think you'd have to back-date it and run it as a 2015 model. I know the nose is different, but I don't know what else is different.

If you're able to run it, it would be a natural J/S car at 12.78 pounds per factored horsepower. You could add or subtract weight to run one class up or down (K/S or I/S).

If the one you have is a Performance Package car, they have larger/heavier front brakes than the non Performance Package car.

Have you driven it?

[Troy Henderson]

I want to see Ecoboost Mustangs heads-up racing Ecotec Camaros. Stick only and we could call it Jr Factory Stock. It would sound like a swarm of mad bumblebees