Max boost on Coyote?? - Page 4 - Ford Mustang Forum
View Poll Results: What brand Forced Induction would you put on your Coyote if money were not a concern?
Kenne Bell 23 35.38%
Vortech 6 9.23%
Whipple 23 35.38%
Procharger 13 20.00%
Voters: 65. You may not vote on this poll

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Joined: Aug 2011
Location: Albuquerque & Iraq
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Weakest link are the connecting rods, like the previous gen. Although, the new 5.0 has stronger rods than the 4.6, but not as strong as the gt500.


These hp numbers are RWHP

'11 5.0L Four-VALVE DOHC
Base power on the Mustang's new standard V8 is 412 hp and 390 lb-ft at the flywheel. So far Burcham is making 750 hp at the wheels at 8,000 rpm on a stock motor with no problems. Svinicki says the engines have been very durable so far. Others aren't so fortunate.
Con rods break (600 to 650 hp): Expect the rods to still be a weak link. Overall strength appears to fall somewhere between the three-valve and the Shelby 5.4L four-valves. Although he's not yet broken any rods personally, Burcham has already received reports of some failures.
Piston disintegration (nitrous or high boost): The pistons remain hypereutectic, so don't expect them to last long under high boost or a big nitrous shot. On the other hand, special oil jets enhance pin oiling, making them marginally better than previous three-valve pistons.
Crankshaft: The new 5.0 motors now use forged cranks. No problems so far. Ti-VCT problems (more than 6,500 rpm): At present, Comp is leaning toward a kit to lock out the factory Ti-VCT (Twin-independent Variable Cam Timing) actuation when running serious cams.
Fuel system: On the new 52-psi fuel system, it may be harder to alter system pressure and delivery characteristics than before.
Block: With quality rods and good forged pistons, the Coyote's improved aluminum block can easily support 1,500 hp.

Read more: What Break's in 2005-2011 Ford Mustangs - Hot Rod Magazine

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Quote:
Originally Posted by ExpatMedic View Post
Weakest link are the connecting rods, like the previous gen. Although, the new 5.0 has stronger rods than the 4.6, but not as strong as the gt500.


These hp numbers are RWHP

'11 5.0L Four-VALVE DOHC
Base power on the Mustang's new standard V8 is 412 hp and 390 lb-ft at the flywheel. So far Burcham is making 750 hp at the wheels at 8,000 rpm on a stock motor with no problems. Svinicki says the engines have been very durable so far. Others aren't so fortunate.
Con rods break (600 to 650 hp): Expect the rods to still be a weak link. Overall strength appears to fall somewhere between the three-valve and the Shelby 5.4L four-valves. Although he's not yet broken any rods personally, Burcham has already received reports of some failures.
Piston disintegration (nitrous or high boost): The pistons remain hypereutectic, so don't expect them to last long under high boost or a big nitrous shot. On the other hand, special oil jets enhance pin oiling, making them marginally better than previous three-valve pistons.
Crankshaft: The new 5.0 motors now use forged cranks. No problems so far. Ti-VCT problems (more than 6,500 rpm): At present, Comp is leaning toward a kit to lock out the factory Ti-VCT (Twin-independent Variable Cam Timing) actuation when running serious cams.
Fuel system: On the new 52-psi fuel system, it may be harder to alter system pressure and delivery characteristics than before.
Block: With quality rods and good forged pistons, the Coyote's improved aluminum block can easily support 1,500 hp.

Read more: What Break's in 2005-2011 Ford Mustangs - Hot Rod Magazine

what a great read and thanks for enlightening me at how stressed out and weak our pm rods are at the center of the rod! i have never seen those falures working on other engines so its a surprise for me to see the rod let go right down the middle... damn!

very hapily surprised people spin this coyote past 7200 given the windage losses from the piston sprayers. as you guys know those sprayers are removed and plugged on boss engines for that reason.

Still with all of that given the 4200 fpm piston speed we already have, and 4500+ for boss - thats about the maximum we can efficiently spin. again, a good reason to put a de-stroked engine together with higher bore.. Or just dont try to exceed 7000 RPM! with the Coyote's short deck height and short rod with long stroke over 3.6", its not designed as a revmaster its design to provide a broad torque curve in a small light package makes it perfect for forced in duction, not high rpm. @ 8200 rpm piston speed is equivlaent to a nascar engine at 9500 rpm!

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