gaskets have NOTHING to do with break in. Usually any engine should have 500+ miles before it sees any boost. I gave mine 800 before i put the blower belt on.DarkFireGT said:no need to break it in. the gaskets are seated by the time it leaves the factory. you're good to go.
and this has what to do with a break in period????Blaven said:With a turbo you see more of the power unlike a charger. Plus u have that power almost all the time when a charger doesn't hit the power until later on in the RPM range. I'd do a turbo over a supercharger if i was going to do forced induction.
iskwezm said:and this has what to do with a break in period????
postAPowers said:You need to really look for a post from "Big Cat", see what he says.
Just curious, but why a turbo instead of a blower?
iskwezm said:gaskets have NOTHING to do with break in. Usually any engine should have 500+ miles before it sees any boost. I gave mine 800 before i put the blower belt on.
Nowadays, the piston ring seal is really what the break in process is all about. Contrary to popular belief, piston rings don't seal the combustion pressure by spring tension. Ring tension is necessary only to "scrape" the oil to prevent it from entering the combustion chamber.DarkFireGT said:Then what is it exactly that you're breaking in? The gaskets need to get seated, as I said, is done by the time the car makes it to the lot. The engine has seen plenty of oil and time on it before it makes it to the lot. It's been heated up enough to keep from any metal pieces expanding or contracting due to high heat. So what needs to break in? I'm not trying to be a jerk here. If you have a good answer, I'd like to hear it. If there's a good reason, I'd like to know. But from everything that I've been told, and all logic I can see, there's no reason. Cars come from the factory with superchargers and turbo chargers. And while they may not be putting 20lbs of boost thru the engine, you know the GT-500's get taken to redline several times before they leave for the dealer's lot. So what's the difference?
anthony05gt said:Gaskets have absolutely nothing to do with break-in. The main concern for break in is crank and rod bearings, piston rings and such. Running a new engine fairly hard puts substantial pressure on the bearings which in my opinion is good for an engine that will not be babied in the future. A general rule of thumb is cars that are run hard from the start are the fastest and actually more dependable to an extent. If you buy a used car from an old lady that has never tached past 4000rpm's for 60k miles then you start running the piss out of it, that could be the worst for the engine for many reasons. For example, the cylinder walls have a ridge worn in them equal to whatever strain the old lady exerted on the crankshaft.(not much) Then you start running the piss out of it causing the engine to run hotter and exerting more pressure on the rods, bearings, crank which in turn can cause the piston rings to over extend the original cylinder ridge wear area and a ring breaks against the ridge. I l;ike to run an engine fairly hard right out of the box. No surprizes later, the engine pretty much breaks in relative to the driver's habits.
iskwezm said:Nowadays, the piston ring seal is really what the break in process is all about. Contrary to popular belief, piston rings don't seal the combustion pressure by spring tension. Ring tension is necessary only to "scrape" the oil to prevent it from entering the combustion chamber.
The honed crosshatch pattern in the cylinder bore acts like a file to allow the rings to wear. The rings quickly wear down the "peaks" of this roughness, regardless of how hard the engine is run. There's a very small window of opportunity to get the rings to seal really well ... the first 20 miles !!
If the rings aren't forced against the walls soon enough, they'll use up the roughness before they fully seat. Once that happens there is no solution but to re hone the cylinders, install new rings and start over again or deal with burning oil.Because cars see redline when brand new doesnt make it right. If you wanna buy a car for $40+K, and beat the **** out of it, because the gaskets seated, go ahead. But im not gonna take that chance to have my engine last 4 years instead of 10 years. Ive built a "few" motors and been a master tech for Ford for about 12+ years, so I would assume the the training i get from Ford and the engines I built in my time are still running with no problems.People always bring up top fuel cars and they dont break them in, right, but on a daily driver do you rebuild after a trip to 7-11????Read the owners manual of ANY new car and there is a break in process, weather or not people belive it,its up to them. I still wouldnt break my engine in with excessive boost. I know a few people that felt its been "long enough", and they just spent 15-20K on new blown/turbo mod motor.Was it from not being broken in???Who know, but i wouldnt take that chance.
If a gasket seats, what is it really doing????If you torque the the part down, they will expand/contract, so does that mean the gasket is changing its thickness constantly???Wouldnt it leak from different materials having a different rate of contraction/expansion????
APowers said:You need to really look for a post from "Big Cat", see what he says.
Just curious, but why a turbo instead of a blower?
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