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5.0L V8 Technical Discussions Any questions about the 'Coyote' engine, transmission, exhaust, tuners/CAI, or gearing can be asked here!

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Old 01-09-2011, 10:03 AM   #1
lizzyfan
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Default 5.0 internals

Forged?
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Old 01-09-2011, 10:26 AM   #2
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The rods are not forged. It is not a true forged engine like a GT500 or 03/04 Cobra.
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Old 01-09-2011, 11:59 AM   #3
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The '11 Coyote does not have forged internals, you have to swap them in.

The '12 Boss I believe will have true forged internals, but I believe the stock '12 GT Coyote is exactly the same as the '11 Coyote (non-forged rods).

I toyed with the idea of buying a crate Coyote and having that engine torn down to install forged rods and lower static CR forged pistons better suited for FI boosts in the double digits (where the majority of compressor maps are most efficient).
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Old 01-09-2011, 03:16 PM   #4
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So this brings up the question of all the S/C kits putting these engines to well over 500rwhp and coupled with higher compression how long are they gonna last? Maybe I'm hung up on the 4.6 internals that when pushed above 450rwhp are not gonna last long
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Old 01-09-2011, 06:20 PM   #5
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That is a good question. I read a mag where 5 professional performance shops (Lethal Performance, VMP, and I can't remember the other two) all put on superchargers, but none of them that published their boost numbers broke 10psi in the manifold.

One of the supercharger kits I believe is the Ford approved kit, and it too did not enter double digit boosts.

This indicates to me that they that all the forced induction kits out there for the stock '11 Coyote are designed with low boosts to prevent damage to the very high compression ratio pistons and non-forged rods. Of course, retarding everything to prevent detonation is also a concern, and that I think is also another reason why boosts remain low.

These guys are breaking 500 HP, at the wheels that is, and pushing low 10s. I think VMP has had theirs supercharged for months now, but I do not even know how often they drive it (it could be a track-only car driven only during the weekends, thus very few miles put on it).
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Old 01-10-2011, 11:14 AM   #6
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The Tech Specs Guide I got from my dealer when I ordered mine says the rods are forged but doesn't mention the crank. The pistons are cast. See below. Hope this helps. I've been looking everywhere but I can't find the Ford Video where the engineers who developed the 5.0 talked in detail about it...I know I saw it a while back but I can't find it now.

ENGINE V-8
Type 5.0L 4V Ti-VCT V-8
Manufacturing location Essex Engine, Windsor, Ontario
Configuration Aluminum block and heads
Intake manifold Composite shell-welded with runner pack
Exhaust manifold Stainless steel tubular headers
Redline 7,000 rpm
Valvetrain DOHC, 4 valves per cylinder, variable intake, variable camshaft timing
Valve diameter/lift (mm) Intake: 37/12; Exhaust: 31/11
Ti-VCT operating range 50 degrees for both intake and exhaust
Pistons Cast aluminum
Connecting rods Forged steel
Ignition High-energy coil-on-plug
Bore x stroke 3.63 in x 3.65 in/92.2 mm x 92.7 mm
Displacement 302 cu. in./4,951 cc
Compression ratio 11.0:1 (est.)
Engine control system PCM
Horsepower 412 @ 6,500 rpm (est.)
Horsepower per liter 82.4
Torque 390 lb.-ft. @ 4,250 rpm (est.)
Recommended fuel 91 octane (unleaded 87 octane minimum)
Fuel capacity 16 gallons
Fuel delivery Sequential mechanical returnless
Oil capacity 8 quarts with filter (10,000-mile service interval)
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Old 01-10-2011, 11:38 AM   #7
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The magazine I had, which had an indepth 14 pages or something, said that the rods were powdered steel just like the 3V.
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Old 01-10-2011, 02:06 PM   #8
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The only true forged parts are the ones that are machined from a billet. Those are the best due to the tremendous amounts of stresses the rods take from forced induction.

The Coyote conrods are powdered metal compressed and sintered, not cut from a billet like true forged conrods.

Though the sintered powder conrods are superior to cast rods, they are not superior to true forged conrods.

Here is a link to a writer who interviewed the actual Ford engineers who designed the coyote. In this 1st link, scroll down to the pic of the conrod, mouse over the pic to expand the explanation, and they describe the conrods are the powdered rods.
http://www.mustang50magazine.com/tec...es_engine.html
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Old 01-10-2011, 07:46 PM   #9
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From what I understand, the only forged internal part is the crank. All of the shops I've talked to, including Lethal (where I buy all my mods), claim that this is good up to 1000hp. My car runs 9psi, and with a variety of other mods puts about 600 to the rear wheels. A very famous ford tuner advised me not to put more power out with stock internals. It was my daily driver until recently, and I've put about 5,000 miles on the supercharger. No problems as of yet. However, I'm going to do the PC Stage II upgrade and an MMR short block next winter, to take it to the next level.
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Old 01-10-2011, 08:04 PM   #10
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Whenever you do start this endeavor, please do start a link on it!
I will definitely subscribe and follow your rebuild!
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Old 01-10-2011, 08:04 PM
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