break in...
Break in is about the first 2 minutes the engine is running.
Rings seat almost immediatly, although they will hone down a bit and the bearings will loosen, but hard driving does not effect that.
The whole vary rpm thing is from the 60's. Before heat treated camshafts and engine parts you were told to go through a procedure, the point of this was to heat treat the parts, mostly the camshaft. If you did not the cam would remain 'soft' and you'd slowly grind the lobes down.
Its everyones own choice, but I have alot of experience in the area, never had a single problem what so ever and never expect to. I personally think a hard driven car when new tends to run better, probably no truth to it but I've run every single vehicle I've own to the limit as soon as I left the lot.
We built the motor in the Camaro, strapped it to the dyno and made 26 consecutive full pulls at over 650hp, 14K miles later it still runs like a top and uses nothing.
My original Camaro motor I took the car right out of the dealer and upto 150 after a few miles to make sure everything was together, 1 week and 340 miles later it went 107 at the track and that motor ran like a top making 450HP NA on heads/cam and 550 on N20 for almost 22K miles before I sprayed it a little too hard and it finally gave up a piston.
You guys do more 'damage' to the motor changing out the oil sooner than the recommended time since there is an additive in factory oil.
When we do engine simulation tests at work, bolt it together, put it on the dyno, run WOT simulations and hard testing till 100K miles or failure, we do not break in procedure at all. That is how they are designed out of the factory to run, all failures and their fixes are addressed from the point of 100 percent usage from the time the engine starts, minus the time to come upto operating temp.
Break in is about the first 2 minutes the engine is running.
Rings seat almost immediatly, although they will hone down a bit and the bearings will loosen, but hard driving does not effect that.
The whole vary rpm thing is from the 60's. Before heat treated camshafts and engine parts you were told to go through a procedure, the point of this was to heat treat the parts, mostly the camshaft. If you did not the cam would remain 'soft' and you'd slowly grind the lobes down.
Its everyones own choice, but I have alot of experience in the area, never had a single problem what so ever and never expect to. I personally think a hard driven car when new tends to run better, probably no truth to it but I've run every single vehicle I've own to the limit as soon as I left the lot.
We built the motor in the Camaro, strapped it to the dyno and made 26 consecutive full pulls at over 650hp, 14K miles later it still runs like a top and uses nothing.
My original Camaro motor I took the car right out of the dealer and upto 150 after a few miles to make sure everything was together, 1 week and 340 miles later it went 107 at the track and that motor ran like a top making 450HP NA on heads/cam and 550 on N20 for almost 22K miles before I sprayed it a little too hard and it finally gave up a piston.
You guys do more 'damage' to the motor changing out the oil sooner than the recommended time since there is an additive in factory oil.
When we do engine simulation tests at work, bolt it together, put it on the dyno, run WOT simulations and hard testing till 100K miles or failure, we do not break in procedure at all. That is how they are designed out of the factory to run, all failures and their fixes are addressed from the point of 100 percent usage from the time the engine starts, minus the time to come upto operating temp.
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