Why, because it works?quote:
Originally posted by sxg6:
Please... i can't stand it when people throw that site around.![]()
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Why, because it works?quote:
Originally posted by sxg6:
Please... i can't stand it when people throw that site around.![]()
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as a ex honda tech. that their clean rooms for engine asselby nice and clean but there is still going to be hair and dirt along with plastic floating around inside the engine. honda is not as good as people think. to me i would not by any of their bigger cars.quote:
Originally posted by 427Z06:
They may leave dirt, hair, and sand in those GM engines. But this is a Honda, and I have it on good authority they don't leave dirt, hair and sand in their engines.quote:
Originally posted by novaracer69:
...i was told from a older guy at work(gm power train ypsilanti MI) that spent 27 years at the romulas engine plant was to change the oil as soon as you get the car home. because there is some dirt and hair and sand left in the engine...
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Since you're a GM employee, I would hope not, as that wouldn't say much for the quality of GM's products.quote:
Originally posted by novaracer69:
to me i would not by any of their bigger cars.
There are some people who worship the Honda corporation that might have a problem with your statement.quote:
Originally posted by novaracer69:
as a ex honda tech. that their clean rooms for engine asselby nice and clean but there is still going to be hair and dirt along with plastic floating around inside the engine. honda is not as good as people think. to me i would not by any of their bigger cars.quote:
Originally posted by 427Z06:
They may leave dirt, hair, and sand in those GM engines. But this is a Honda, and I have it on good authority they don't leave dirt, hair and sand in their engines.quote:
Originally posted by novaracer69:
...i was told from a older guy at work(gm power train ypsilanti MI) that spent 27 years at the romulas engine plant was to change the oil as soon as you get the car home. because there is some dirt and hair and sand left in the engine...
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No one has to do 110 mph to redline the engine. You do it at 0mph in neutral if one wanted. Or 1st or 2nd if a some load is desired.quote:
Originally posted by deven:
Imagine new car drivers redlining on the highway doing 110mph and breaking the law?
A $20 UOA doesn't show everything that may be in the oil. How many UOAs even show Sb (Antimony)?quote:
Originally posted by Cicero:
Please, is there a VOA Honda FFILL that says their IS OR ISN'T anything "special" in it. I am not finding a post if there is one. If Honda FFILL it just high moly dino...how high does the moly have to be to match it?
If it works, why don't any auto makers suggest to break-in their cars the way he says to? Maybe someone should link the honda engineers to mr mototune's web site so that they can see the light and learn a thing or two..quote:
Originally posted by BlazerLT:
Why, because it works?quote:
Originally posted by sxg6:
Please... i can't stand it when people throw that site around.![]()
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50-100 miles and then synthetic. Maybe.quote:
Originally posted by Al:
http://www.mototuneusa.com/break_in_secrets.htm
....I like to get the origional oil out of there in the first 1000 ules....Havoline has a boatload of moly.....Or you can put synthetic in the minute you get home.![]()
and you think that a car company is going to tell people to redline it in park/neutral?? You might have worked in the auto industry but my dad has 40 years experience and a graduate of MIT. Not only does he believe in this method but so do his collegues. I have asked more than 10 of his friends about this subject and they all tell me to drive it hard. I am sure to believe 10 credible engineers over you any day.quote:
Originally posted by 427Z06:
No one has to do 110 mph to redline the engine. You do it at 0mph in neutral if one wanted. Or 1st or 2nd if a some load is desired.quote:
Originally posted by deven:
Imagine new car drivers redlining on the highway doing 110mph and breaking the law?
Since I've worked in the automotive industry, I know the rest of your statement has no credibility.
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Possibly good advice for an older engine with flat tappets that relied on splash oiling for the cam lobes to live. The LS1 style engine in the Corvette has roller followers, no distributor drive gear and roller rocker arms. Nothing to "splash lube" so spending time idling above 2500 is time wasted. Absolutely nothing to gain, there.
There is some fallicy in the ring breakin advice. I agree that the ring breakin to the cylinder walls happens very rapidly and your comment about the time to the haulaway truck is pretty accurate. The main thing that needs to breakin with the rings is the SIDE of the rings to the SIDE OF RING LANDS. That mating surface is critical for good sealing and the ring motion against the side walls and gas pressure loads against the side walls is what breaks in the rings to the ring lands. This is especially critical in todays engines that have the top ring closer to the top of the piston and that have hard anodized top ring lands for poundout and wear prevention. Hard anodizing of the ring lands leaves a "pebbly" surface when viewed under and SEM. That surface must be burnished smooth for good ring seal and the hard anodized surface is tough to burnish down. It takes load. To really break in the rings against the side of the piston ring lands it is helpful to apply full load for brief intervals and then allow heavy engine braking to load the rings the other way and cause them to move around on the piston so as to burnish the sides of the ring lands.
I often recommend a procedure that can be done on the expressway by putting the trans in a manually selected lower gear so that the car is about 4500 RPM at 45-55 MPH. Full throttle up too 5500-6000 and then lift and allow engine braking back to 4500. Do this 10 times and then drive normally to cool things off. Repeat. Do this several times on several consequtive days. This is excellent for braking in the rings or exercising the rings on an older engine that might have carbon deposits restricting ring motion causing poor oil economy.
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It is a bit off topic but I will share this anecdote if you are worried about breakin on a new production engine.
We did a program back in the mid 90's to determine what sort of engine "hot" tests worked best and to investigate a number of other things. The "test" was done thru Jack Roush's engineering group and contracted on their dynos. It involved taking 150 brand new, 300 HP Northstar engines that had never been fired and running a 2.5 hour hot torture test on them with a post test teardown. The engines were stone green at the start of the test. They were each installed on the dyno and the coolant and lube systems hooked up. Coolant was preheated to 255 F by the test cell equipment and oil was preheated to 285 F. This was done with 50/50 DexCool/water and conventional motor oil...not synthetic. The engine was fired and IMMEDIATELY put at full throttle where it ran at 6000 + RPM at full load with the oil temp controlled at 285 to 300 F. It was harder to get the dyno equipment to live than anything else....LOL.
There were no engine failures at all. None. All engines were torn down and judged to be in "like new" condition on all parts. No scuffed pistons, no damaged bearings, nothing. In fact, it was difficult to tell that most of the bearings had even been used as they absolutely looked brand new even under magnification. To say that it was eye-opening to a lot of people was an understatement. The Roush dyno techs thought that we were nuts and would stop after the first few engines blew up....LOL.
The only caveat here, is that each engine had the oil routed thru the oil heater and oil cooler equipment which necessitated separate filtration so that any debris generated during the first few minutes of operation that might have bypassed the filter otherwise running at 6000 was caught by the external filtration (it was needed to protect the cooler/heater heat exchangers if there was a problem) so the test indicates performance of fits and finishes of a brand new engine and oil capability at those temps and such but doesn't perfectly replecate a car run immediately to full throttle, 6000 RPM and held there for 2.5 hours..as if you could do that somewhere....LOL.
I was the development engineer in charge of this test so I saw it happen, saw the engines at teardown and compiled the results. Anyone concerned about stabbing the throttle during break in can rest easy. Trust me.
Yo...this is the Internet. Anybody can claim all the credentials they want. I'll let the quality of my 5,000+ posts speak for themselves.quote:
Originally posted by deven:
You might have worked in the auto industry but my dad has 40 years experience and a graduate of MIT. Not only does he believe in this method but so do his collegues. I have asked more than 10 of his friends about this subject and they all tell me to drive it hard. I am sure to believe 10 credible engineers over you any day.
Note that this procedure, for engines of this design, is to create load on the ring lands. Not to "red line the engine as often as possible". He also notes that sustained redlining can introduce break-in debris as it bypasses the filter.quote:
Originally posted by buster:
I often recommend a procedure that can be done on the expressway by putting the trans in a manually selected lower gear so that the car is about 4500 RPM at 45-55 MPH. Full throttle up too 5500-6000 and then lift and allow engine braking back to 4500. Do this 10 times and then drive normally to cool things off. Repeat. Do this several times on several consequtive days.
I am not going the same route the other thread is going about "neat video" that you are posting in. Being a post whore doesnt make you a know it all.Listen I am not even going to respond to your posts. After reviewing your 5000 post, I have come to my own conclusions of your "quality" posts so lets just leave it at that.quote:
Originally posted by 427Z06:
Yo...this is the Internet. Anybody can claim all the credentials they want. I'll let the quality of my 5,000+ posts speak for themselves.quote:
Originally posted by deven:
You might have worked in the auto industry but my dad has 40 years experience and a graduate of MIT. Not only does he believe in this method but so do his collegues. I have asked more than 10 of his friends about this subject and they all tell me to drive it hard. I am sure to believe 10 credible engineers over you any day.
By the way, wasn't it a MIT grad that failed to use metric units in the coding of a ground software file that caused the Mars Climate Orbiter to crash?