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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 08-25-2014, 02:54 PM   #11
Slowbra302
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Breaking in a Mustang:

Step 1; get in car
Step 2: Start car
Step 3 leave driveway
Step 4: Find 2 miles of straight road
Step 5. Stop dead on road
Step 6 mash pedal to floor
Step 6 take engine to full WOT aka 148 mph
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Step 9 bet you never recognized I missed step 7
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Old 08-26-2014, 02:25 PM   #12
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Although today's engines don't necessarily require break-in like they did 20-40 years ago, just drive with a little bit of caution but don't baby it. I'd vary the cruising speed and duration with a few... "spirited"... jaunts to 90 or 100 mph if you have the stomach (my 4.6L saw 130 for the first of many times in the first 600 miles). Do you think they roll off the assembly line and are tested by someone's grandmother?
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Old 08-26-2014, 06:11 PM   #13
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Although today's engines don't necessarily require break-in like they did 20-40 years ago, just drive with a little bit of caution but don't baby it. I'd vary the cruising speed and duration with a few... "spirited"... jaunts to 90 or 100 mph if you have the stomach (my 4.6L saw 130 for the first of many times in the first 600 miles). Do you think they roll off the assembly line and are tested by someone's grandmother?
every car comes off of end-of-line and goes over to the rolls (chassis dyno.) After a diagnostic check it goes up on the rollers and the tech runs it up to an indicated 60 mph and coasts down, then gets another diagnostic check. I can assure you they don't do that gently.
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Old 08-27-2014, 12:46 PM   #14
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every car comes off of end-of-line and goes over to the rolls (chassis dyno.) After a diagnostic check it goes up on the rollers and the tech runs it up to an indicated 60 mph and coasts down, then gets another diagnostic check. I can assure you they don't do that gently.
Do they run wide open throttle right up to redline and bang off the rev limiter for a few seconds? Not really sure what your point is there.
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Old 08-27-2014, 01:39 PM   #15
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If you ain't hitting the rev limiter than you're not doing it right.
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Old 08-27-2014, 03:55 PM   #16
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If you ain't hitting the rev limiter than you're not doing it right.
Absolutely.
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Old 08-27-2014, 03:55 PM
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