Alluminator build

[B229218]

I know four offers two versions,
One with 9:1 and the other with 12:1 compression. I wonder if we ran a low compression one that would be safer for boost. It seems like the high compression to put you right on the edge curious what the horsepower loss would be with 9:1.
Also, I have read Ford does not build those ring gaps with loose intolerances, even though they are set up for force induction. Along from involved would be to switch short blocks out I guess I could pop the pistons out and reset the gaps. Has anyone on the board here tried these different short block options?
I’ll tell you what, the price difference around $15,000 for a dark horse really evens out when you see how much you have to spend to beef up a GT engine to handle boost as well as the dark horse does with all forged bottom end.

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[robvas]

Dark horse doesn't have forged pistons...

9.5 compression gives you more of a tuning window and is the one to go with if you're going to run pump gas

 

[Junkyard Dog]

Is Ford selling short blocks for the new generation engine? All I saw were the last generation engine. Only the full engine was available for the new generation. If I am wrong, would somebody please post a link?

 

[Junkyard Dog]

I know four offers two versions,
One with 9:1 and the other with 12:1 compression. I wonder if we ran a low compression one that would be safer for boost. It seems like the high compression to put you right on the edge curious what the horsepower loss would be with 9:1.
Also, I have read Ford does not build those ring gaps with loose intolerances, even though they are set up for force induction. Along from involved would be to switch short blocks out I guess I could pop the pistons out and reset the gaps. Has anyone on the board here tried these different short block options?
I’ll tell you what, the price difference around $15,000 for a dark horse really evens out when you see how much you have to spend to beef up a GT engine to handle boost as well as the dark horse does with all forged bottom end.

What are you intending to do with it? How much boost? What fuel? How long would the rings see full boost before being allowed to cool?

 

[B229218]

Yes, according to Ford, the dark horse does have forged pistons and rods, although they use the weaker GT500 rod rather than the manley rods in their short blocks.
They’ve been selling coyote short blocks for years. According to Ford racing parts it’s a GEN three short block works with GEN four heads. The Aluminator is the one to get for force induction. I read somewhere they don’t set it up with large ring gaps. I don’t think it’d be a big deal to take a new short block apart and regap the rings though. My question is mostly to tuners since we can’t tune our cars yet I don’t know how we can get a custom tune to take advantage of the lower compression short block as always they offer it in 9 to 1 and 12 to one our motors are a 12 to one which I don’t know how in the hell they get the motors to survive more than five minutes with 11 pounds of boost and that much compression on pump gas. Must be something you do with direct injection.
Anyway, I was wondering if anybody has Dynoed anything like this I’m wondering how much power would be lost going to a straight 9:1 compression.

What are you intending to do with it? How much boost? What fuel? How long would the rings see full boost before being allowed to cool?

 

[B229218]

And yes, they are selling the new GEN four long blocks rated at 480 hp

 

[robvas]

Yes, according to Ford, the dark horse does have forged pistons and rods, although they use the weaker GT500 rod rather than the manley rods in their short blocks.

No it does not have forged pistons.

 

[robvas]

My question is mostly to tuners since we can’t tune our cars yet I don’t know how we can get a custom tune

Have you been living under a rock? You can get a custom tune on the S650. Have been able to for a while.

 

[B229218]

Oh really? Well, then, I guess there’s a lot of members on those board who live under the same rock because they don’t know how to get their computer to allow a added on the oil cooler to functionwith the computer

 

[Junkyard Dog]

Oh really? Well, then, I guess there’s a lot of members on those board who live under the same rock because they don’t know how to get their computer to allow a added on the oil cooler to functionwith the computer

While you are correct about this one item (nobody has put serious time into that yet), robvas is correct about tuning. All of the engine functions, fuel, timing, and so on, can be tuned.

 

[Junkyard Dog]

they offer it in 9 to 1 and 12 to one our motors are a 12 to one which I don’t know how in the hell they get the motors to survive more than five minutes with 11 pounds of boost and that much compression on pump gas.

While I am sure you are engaging in hyperbole, nobody has these engines engaging in boost for five minutes straight, not even on the longest track, not even in standing mile racing.

A normal HPDE track session, however, is 20-30 minutes, and the engine spends a lot of time at full throttle, of and on, and nobody has figured out how to keep 11 pounds cool enough to run even one session.

So it would be helpful if you would tell us what you are planning to do. See the series of questions in post #4.

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