Piston Slap: Ain't Skeered of No Blown Stang!

Sajeev Mehta
by Sajeev Mehta
piston slap aint skeered of no blown stang

TTAC commentator 1trikpny writes:

Hi, I’ve got a 2005 Mustang GT Deluxe,5spd, no Leather, no options. Black with 18″ chrome wheels, 285/35 Sumitomo HRT-Z 3’s, I’m the second adult owner.The previous owner bought it new, and at 40,000 miles installed a Saleen Supercharger with a Brenspeed Stage 3 tune. 500 hp at the crank. Currently at 63000 miles. I’ve added BMR LCA’s, Relocation brackets, and Panhard bar. this car has been very well maintained all of it’s life. No smoke, no noises, everything is just right.

So what’s the problem?

I can’t help thinking about breakage, so I’m thinking of selling it. I really like this car, and don’t even drive it hard, but I am well aware that stuff happens. Although money is not an issue, any I put into repairs would be gone as far as resale. Right now the car is worth every penny I paid, including the BMR stuff.

I won’t replace it if I sell, but I would certainly miss it. It always puts a smile on my face!

What do you and the B&B think? Am I just worrying too much? I do that naturally………

Thank you in advance for thoughtful comment,

Sajeev answers:

Ah, the classic “is this relationship too good to be true?” question posed by many a tuned automobile owner. A scary proposition if this was a modified WRX with an unknown owner history, but somewhat benign with an adult-owned supercharged Mustang. Let’s find out why!

Assuming the computer recalibration is set for a healthy balance (in the air/fuel ratio) between component safety and dyno-pleasing power figures, there’s little to worry about. Continue to drive like an adult on premium fuel and the engine should be fine, as supercharging Ford V8s is far from complicated or dangerous. It’s been that way for years. Ditto the solid rear axle: Ford’s 8.8 is robust, even the Camaro boys love them.

The only concern is the transmission. While a stock Mustang gearbox is good for an impressive 360 ft-lbs, you could easily destroy it with hard launches/power shifting/regular application of full throttle on a supercharged Mustang. But money fixes everything. Rather cheaply in a Mustang compared to other tuned machines, I might add!

The point: you are indeed worrying too much. Enjoy the “adult driven” Mustang and find a worrisome issue that’s worthy of your time.

[Image: Shutterstock user Steve Mann]

Send your queries to sajeev@thetruthaboutcars.com. Spare no details and ask for a speedy resolution if you’re in a hurry…but be realistic, and use your make/model specific forums instead of TTAC for more timely advice.

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2 of 23 comments
  • Beerboy12 Beerboy12 on Aug 05, 2014

    Driving a car like this gently can do about as much damage to the motor as hooning it. Give it horns now and then, that's what meant for! Keep it until you have a real reason for letting it go.

  • Scottcom36 Scottcom36 on Aug 05, 2014

    You won't get back the money you spend repairing a "sensible" car either. I say enjoy driving it and pushing it some without beating on it.

  • FreedMike Bicyclists.
  • FreedMike But will it have a badge?And maybe I don’t understand this whole truck thing, but isn’t 430 hp out of 7.3 liters a bit low? That’s not a whole lot better than the Coyote engine in the Mustang. I don’t see that as a selling point.
  • Goatshadow My favorite Lambo ever. It's gorgeous..
  • DenverMike Column shifter in all trims? Thank god someone is listening. The console shifter is just the stupidest thing ever. Frick just make the whole area useful utility. Luxury means something different in trucks. Definitely removable and I’ll make my own work station.
  • Joh65689020 1. Drape/ Masking-tape paint.2. Blue Coral (or any brand) chrome polish on PowerBall with cordless drill-driver.3. Buff lightly with microfiber towel to crystal clear finish.