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Old 05-29-2013, 12:58 PM   #1
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Break in Period

Hey all. What are everyone’s thoughts on the break in period of new 5.0(motor, Trans and clutch)? Only asking cause I want to run 1/4 mile thisweekend and then auto x event in AC at the end of June. However this isn’t mydaily driver so it only gets driven on weekends.

In my younger days I wouldn’t have cared and raced it already but things aredifferent now.
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Old 05-29-2013, 01:05 PM   #2
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I have about 500+ mi. on my Stang. I like to get it up to at least 1k before letting it rip but others will say drive it like you stole it. lol somewhere in the manual, there is a break-in procedure but I forgot what page.
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Old 05-29-2013, 01:09 PM   #3
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Thanks dude. I'll check it out
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Old 05-29-2013, 01:14 PM   #4
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I'm not sure how I feel about this. In my experience with rotary engines (I'm aware they're different) any time you put new parts together they need to be broken in gently then slowly work your way up. They say that isn't necessary on these cars, but that seems wrong to me. Sure it'll run fine now, but what about 100,000 miles from now?
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Old 05-29-2013, 01:32 PM   #5
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If you're unsure, follow the directions in the owners guide. These motors aren't "fresh" when they're put in the car by the way, that is why there isn't as much of a break-in period necessary.
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Old 05-29-2013, 01:35 PM   #6
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If you're unsure, follow the directions in the owners guide. These motors aren't "fresh" when they're put in the car by the way, that is why there isn't as much of a break-in period necessary.
They say the motors aren't, but what about the rest of it? Transmission, driveshaft, etc.

It's not that I doubt your word, but I find it hard to believe that beating it is the best decision straight from the dealer
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Old 05-29-2013, 01:37 PM   #7
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my dealer told me these engines already come broken in from the factor. not some salesmen a ford tech. but who knows what he knows!
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Old 05-29-2013, 01:39 PM   #8
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my dealer told me these engines already come broken in from the factor. not some salesmen a ford tech. but who knows what he knows!
But why risk it? Patience is a virtue
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Old 05-29-2013, 01:40 PM   #9
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But why risk it? Patience is a virtue
I didn't redline it or punch it till 1,000 miles but you don't have to total baby the car. these things are built to be driven
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Old 05-29-2013, 01:41 PM   #10
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Its all mechanical and anything can fail it doesnt matter if your running it hard or not if its going to it will anyway
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Old 05-29-2013, 01:44 PM   #11
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I didn't redline it or punch it till 1,000 miles but you don't have to total baby the car. these things are built to be driven
I think that's a good decision in your part. I wouldn't recommend going above 4k rpm till at least 500 miles.

---------- Post added at 12:44 PM ---------- Previous post was at 12:43 PM ----------

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Its all mechanical and anything can fail it doesnt matter if your running it hard or not if its going to it will anyway
Sure anything like this is going to fail, but a proper break in will extend its life so I must disagree.
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Old 05-29-2013, 01:46 PM   #12
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Do whatever your comfortable with, there's a myriad of schools of thought. I will say that if you want your Mustang to run for 100k miles you should probably baby it all the time. lol
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Old 05-29-2013, 01:48 PM   #13
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Do whatever your comfortable with, there's a myriad of schools of thought. I will say that if you want your Mustang to run for 100k miles you should probably baby it all the time. lol
Eh... Regardless, if a reciprocating engine doesn't last 100k mi, there was something wrong or you didn't maintain it properly.
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Old 05-29-2013, 01:54 PM   #14
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I think that's a good decision in your part. I wouldn't recommend going above 4k rpm till at least 500 miles.

---------- Post added at 12:44 PM ---------- Previous post was at 12:43 PM ----------



Sure anything like this is going to fail, but a proper break in will extend its life so I must disagree.
What exactly are you breaking in once its been heated to running temp and cooled down nothing is going to stretch expand any further
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Old 05-29-2013, 01:57 PM   #15
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What exactly are you breaking in once its been heated to running temp and cooled down nothing is going to stretch expand any further
The piston rings? If you've ever rebuilt an engine you will know how important a break in of any seals is in regards to oil consumption and output power
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Old 05-29-2013, 02:00 PM   #16
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The piston rings? If you've ever rebuilt an engine you will know how important a break in of any seals is in regards to oil consumption and output power
Yea tgat its true on a 2 cycle engine
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Old 05-29-2013, 02:02 PM   #17
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Yea tgat its true on a 2 cycle engine
I see what you're saying but no one should redline these engines <100 miles and I think people are doing so
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Old 05-29-2013, 02:03 PM   #18
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I see what you're saying but no one should redline these engines <100 miles and I think people are doing so
You think ppl dont redline them everytime they get test drov3 at the dealer
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Old 05-29-2013, 02:05 PM   #19
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You think ppl dont redline them everytime they get test drov3 at the dealer
I know they do! That's why I special ordered mine so it'd never be test driven
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Old 05-29-2013, 02:07 PM   #20
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You think ppl dont redline them everytime they get test drov3 at the dealer
Lol, the only time I've ever hit the rev limiter on mine, was during the test drive.
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Old 05-29-2013, 02:08 PM   #21
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I know they do! That's why I special ordered mine so it'd never be test driven
But if that was the case there would be probably 1,347,852 blown 5.0 engines because of redline under 100 miles
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Old 05-29-2013, 02:08 PM   #22
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Lol, the only time I've ever hit the rev limiter on mine, was during the test drive.
Hahah! I know what you mean. I'm so use to a loud car that I couldn't even tell my tach was so high.
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Old 05-29-2013, 02:09 PM   #23
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You think ppl dont redline them everytime they get test drov3 at the dealer
haha when I test drove one I was being easy on it. after my dad told the guy I would want to step on it the guys like soooo.... I thought you wanted to step on it? as soon as he said that you already know the rest haha. obviously didn't get that car then n there but it sucks someone drives that home /:
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Old 05-29-2013, 02:10 PM   #24
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But if that was the case there would be probably 1,347,852 blown 5.0 engines because of redline under 100 miles
You're totally misunderstand what I'm saying. I highly doubt any engine would blow this new unless something severe was wrong.
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Old 05-29-2013, 02:13 PM   #25
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You're totally misunderstand what I'm saying. I highly doubt any engine would blow this new unless something severe was wrong.
Exactly going back to what I said before its mechanical anything can fail if its goin to it doesnt mattet how hard its driven if there is a (weak point ) it will show itself anyway

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Exactly going back to what I said before its mechanical anything can fail if its goin to it doesnt matter how hard its driven if there is a (weak point ) it will show itself anyway
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Old 05-29-2013, 02:14 PM   #26
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Eh...it's under warranty. Drive it like you stole it. Every one I test drove was beaten on...wanted to see if it was worth the price tag
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Old 05-29-2013, 02:18 PM   #27
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The last time I floored it was around 510mi. on my daily commute to work when some Prius honked the crap out of me for driving at the speed limit which was 55mph. (everyone usually drives at around 65mph on that hwy) LOL but so far the engine is running smooth as usual.
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Old 05-29-2013, 02:25 PM   #28
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Thanks for all the replies. I think I'll go somewhat easy until 1k miles. Right now I have 160. Although, Borla Stingers, FRPP shifter are waiting for me at the house.
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Old 05-29-2013, 02:28 PM   #29
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Thanks for all the replies. I think I'll go somewhat easy until 1k miles. Right now I have 160. Although, Borla Stingers, FRPP shifter are waiting for me at the house.
Lol I've been there! My car still had 30-day tags when I started modding it. I wouldn't worry about babying it, I think the only thing the manual says is to vary your speed/rpm for the first 600 miles or so. That first 600-1000 miles will fly by anyways.
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Old 05-29-2013, 03:09 PM   #30
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I think I had 72 miles on mine when I took it to the quarter mile. It was floored before that too. I roasted them off pulling out of the dealer the day I picked it up. It had like 11 or 12 miles then. At 900-1000 miles I changed to Royal Purple motor oil and transmission fluid, boss im, JLT cai, ORX and full exhaust, and dyno tuned making over 440rwhp. Break in, hilarious!
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Old 05-29-2013, 03:14 PM   #31
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I bought my car at Ricart Ford in Columbus Oh, they have a small test track you can beat the car on before you buy it.
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Old 05-29-2013, 03:18 PM   #32
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I bought my car at Ricart Ford in Columbus Oh, they have a small test track you can beat the car on before you buy it.
I just looked that up on Google Maps and it's pretty cool. Almost looks like a small section of an autox course.
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Old 05-29-2013, 03:25 PM   #33
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That is pretty cool. There's a dealer somewhere in PA that has like a 2 mile Tri-Oval around it. I've only heard stories, don't know the name or where it is. Maybe I'll search on the Internet!
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Old 05-29-2013, 03:29 PM   #34
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I saw this part too ... interesting markings on the pavement!

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Old 05-29-2013, 03:32 PM   #35
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I saw this part too ... interesting markings on the pavement!
Ah ha, I didn't see that at first glance. There's even a car on it. This place just keeps getting cooler. I wonder if they have a water slide too!
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