Keeping your motor strong and reliable - Ford Mustang Forum
 
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post #1 of 7 (permalink) Old 04-11-2010 Thread Starter
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Keeping your motor strong and reliable

So what are the weak links in the 4.6 motors for the 05-09 mustangs as you start adding horsepower? I'm asking because I want to have a fun streetable car but would also like to get 200K miles from the motor if possible. This car is a daily driver for me in the winter and summer. So, as opposed to only adding horsepower what can you do to ensure the motor stays as strong and reliable as possible?


92 LX
Holly Systemax, Shorty Headers, TFS Stage 1 Cam, TFS FAC 170 Heads, Cobra Transmission, King Cobra Clutch
RWHP 317

2006 Mustang GT
JLT CAI and a Custom Tune
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post #2 of 7 (permalink) Old 04-11-2010
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Weak components are the connecting rods and the hyperteuric pistons. Over-revving is the quickest way to kill these motors. Keep the RPMs down and run a safe tune and you'll be fine.


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post #3 of 7 (permalink) Old 04-11-2010 Thread Starter
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Quote:
Originally Posted by stlwagon View Post
Weak components are the connecting rods and the hyperteuric pistons. Over-revving is the quickest way to kill these motors. Keep the RPMs down and run a safe tune and you'll be fine.
What would be considered reving? Is it worth it to replace these parts with something better? What kind of costs are involved and if you did replace these parts which would you do first?

92 LX
Holly Systemax, Shorty Headers, TFS Stage 1 Cam, TFS FAC 170 Heads, Cobra Transmission, King Cobra Clutch
RWHP 317

2006 Mustang GT
JLT CAI and a Custom Tune
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post #4 of 7 (permalink) Old 04-11-2010
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Don't continually run at or near the redline on the tach.

1965 Mustang Coupe
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post #5 of 7 (permalink) Old 04-11-2010 Thread Starter
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Quote:
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Don't continually run at or near the redline on the tach.
Gotcha; I've never had it to 6K rmps. I do like to accelerate however and will ocasionaly get it to 4500 or 5K

92 LX
Holly Systemax, Shorty Headers, TFS Stage 1 Cam, TFS FAC 170 Heads, Cobra Transmission, King Cobra Clutch
RWHP 317

2006 Mustang GT
JLT CAI and a Custom Tune
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post #6 of 7 (permalink) Old 04-11-2010
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Then you should be fine.

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post #7 of 7 (permalink) Old 04-11-2010
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A STOCK 3V should last 200k with good oil and regular maintenance. But once you start the modifications (superchargers etc) the life of the engine will decrease.How much? No idea, but anything beyond stock means less life.
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