I used to think that worked but after driving idential cars, one that had had the guts flogged out of it from day 1 and the other thats had probably never seen over 2000rpm in it life I changed my mind.
And to back that up, nothing goes harder than a renter.
I remember hearing of a guy who had his BMW stolen and recovered a few days later with no damage stuffed tyres from a few days of being canned, he couldnt beleive how much more grunt it had after than day, he was a very pleased man.
Car's I have owned. First car purchased in July 1994, in order of ownership.
VC Valiant 245Hemi, 280zx Nissan 5 speed, 88 EA 3.9CFI,94 ED Gli X Chaser, 79 FC LTD, 351, FMX, 91 EA2 Fairmont Ghia, 1999 AU S pack, 2000 AU Forte, 1992 EB2 XR8, 2001 AU2 SR, 2002 VX2 Acclaim, 2002 VX2 Manual S pack,2003 BA XR6 manual, 2001 VX2 Berlina.
You've got to run a car in, if you don't, you run a higher chance of something letting go in the engine and doing some major damage. It's just a higher chance...not a definite.
As Martin says, the engines are run at the factory long enough to check functionality and stability, they are certainly not run in as XR6 man's dad preaches.
BOF, cars that never see over 2000 rpm will eventually run like dogs breakfasts - carbon builds up around the valves and the engine becomes less efficient, reducing power. Carbon can often be removed by an extended run through the country at decent revs, but sometimes an engine is just too far gone.
So yes, an engine that is revved out often will perform substantially better than a underused grandma - type driving engine. But when you're running it in, for 2000k's at least, drive like a grandma or you risk damaging the thing.
During my apprentership as a mechanic I was told after rebuilding a motor you should run it in by revving it between 1/4 to 3/4 of its minimum to maximum rpm at at least 1/4 to 3/4 throttle opening for its first 500km to bed in the rings properly. Nothing is worse than idling along babying a car when new. I broke my new AU in by driving it through the hills so as to get some load in to it and it runs beautifully
BA Falcon SR, Pearl Blue, with ALL the fruit. Apline V12 amp Kenwood servo subwoofer Amp. Headers and Exhaust.
Old car = AU Futura, Galaxy blue, IRS, 16" mags, DBA Slotted rotors. Pity to see it go, very good, under- rated car, RIP
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