For those with rebuilt engines!
 

I recently spun the every single bearing in my d16z6 about two weeks ago. My point is that it is at the machine shop and im gonna get it back when i return from my vacation in MeXico. How would go about breaking it in before you just stomp the living ---- out it. How many miles to put on it first and what type or oil (brand viscosity) for the first oil change. All suggestions are appreciated. Thanks ;D

Re:For those with rebuilt engines!
 

I would talk to the machine shop doing your re-build. They would be able to give you the "break in" specs you need. I'm not saying that no one here would be able to help you, but at least if something goes wrong during the break in, you can use the machine shops word against it. Know what I mean?

Re:For those with rebuilt engines!
 

I've been rebuilding my engine and I read up on this subject, haynes manual said, drive it for 500 miles at 3000 rpms no hard acceleration, and after 2000 miles its considered fully ready to be abused. not a joke its real. but the thing with me, I will be hooking up my turbo along with the rebuild so I dont know will it workout.

Re:For those with rebuilt engines!
 

honda says when using new bearings in one of their cars in the engine, start it and idle it for 20 min and hear the engine come up to temp (hear the fans run) then be gentile for the first hundred miles

Re:For those with rebuilt engines!
 

NAH i just run them at 2500-3000 rpm for about 10-15 minutes. then i take it out and beat the hly living ---- out of it. If the clearances or TQ specs are wrong. itl blow up right away., Itll save you the agony of finding that out 5,000miles after a ew engine install. IF it breaks during a ( break in ) it was broke to start with.

Re:For those with rebuilt engines!
 

exactly

run it @ 2k rpms for 20 mins... then RUN THE BITCH!!!!!

Re:For those with rebuilt engines!
 

everyone seems to hear something different..

i dont think anyone actually has proven opinions.

Re:For those with rebuilt engines!
 

OK, think about this. Do you think race motors are run for 500,1500 or 2000 miles before they race them? No. The reason you run the motor at 2000 RPM to start with is to seat the bearings. I always change the oil right after that. Then you drive the car for a few hundred(about 1 tank of gas)miles taking it easy. Go ahead and take it to redline a few times, but just a few. You do this to make sure you have no leaks or loose bolts. If everything is alright after that you are good to go. Also if is a turbo car keep the boost down as low as you can for the first tank of gas,again just to be safe. Have fun.

Re:For those with rebuilt engines!
 

[quote=Sikocivic


I always though the specs that I posted was wierd, but its in black and white, and I dont always listen to hot rod guys but they said it also, but I would with driving out a full tank of gas, but its so your rings will seal, you will have some blowby before broke in.


]
OK, think about this. Do you think race motors are run for 500,1500 or 2000 miles before they race them? No. The reason you run the motor at 2000 RPM to start with is to seat the bearings. I always change the oil right after that. Then you drive the car for a few hundred(about 1 tank of gas)miles taking it easy. Go ahead and take it to redline a few times, but just a few. You do this to make sure you have no leaks or loose bolts. If everything is alright after that you are good to go. Also if is a turbo car keep the boost down as low as you can for the first tank of gas,again just to be safe. Have fun.

Re:For those with rebuilt engines!
 

im a firm believer that you should break the car in the same way you are going to drive it afterwards during the first tank of gas i keep it under 3500 rpm's then i rape the new engine like michael jackson rapes young boys. never had a problem doing this i have almost 60,000 miles on my turbod d16 6-8 psi + a 50 shot occasionally just keep up on maintnace

Re:For those with rebuilt engines!
 

Thanks for all the input and like always I appreciate it. :D I will do the break'in and then straight to the track ill let you know how my HMT setup does at the track and at the dyno at 10 psi ;D

Re:For those with rebuilt engines!
 

When I started up my rebuilt engine for the first time, I let it idle for about 20 mins while I looked around and checked everything out, making sure it's all good. Then I took her out on the road, for about a mile just to make sure everything is driving well, then I couldn't hold back and let her loose and raped her good. She's been running fine to this day and just passed smog with flying colors.

Re:For those with rebuilt engines!
 

There are two very well documented methods of breaking in an engine:

1.) First few minutes of running, after its warmed up idle the engine 2000-2500 rpm for a lil while to seat in the rings. Then very easy the first 1500-2000 miles, no long duration RPM levels (as in dont drive it 500 miles somewhere on the interstate for now). I change the oil every 1000 miles for the first 3000 miles on an engine to make sure she isnt putting ---- in the pan. Use this method if you intend to drive this motor for a long period of time.

2.) Run the ever loving piss out of it out of the box. This will probobly yield you the most power, but the durability of the engine wont be there. This is what they do with race engines, but rememebr those engines arent built with running another 150,000 miles in mind!!!

edit: I forgot to add that it really depends on the engine too. The generic / oem rings dont take too long to seat in... they design them like that cuz they know gimps will be ragging on it ASAP. If you've built up a really nice motor w/crome moly rings yadda yadda those take a lot longer to seat! Sometimes if you're too hard on them during break in they never seat.

Always make sure you keep an eye on your oil!!! New engines will burn a bit until rings etc are seated.

Re:For those with rebuilt engines!
 

A friend of mine built his 350 TPI and broke it in driving no different than he always does. He ------- raped that thing like you wouldn't believe. The first ~200 miles he "kinda" took it easy, but after that he ------- abused that -----. It's still running strong to this day about 3 years later. We even took it on a 200 mile road trip with long spurts of 150mph+. ------- insane. When you pass people that are doing 80-85 like they aren't moving, it kinda scares you. :o

When I rebuild my bike, I take it easy for the first ride, don't hold it at any rpm for long periods of time, take it through the entire rpm band, let it cool down, then ride it like I stole it. They always turn out perfect like that. Right this minute my bike has a fresh top end with the assembly lube still in it just waiting for me to rape it. ;D
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Re:For those with rebuilt engines!
 

all of that is a completely joke

the only reason anyone "breaks in" an engine is to seat the rings

20mins about @ 2000rpms, change the oil. and drive it like you stole it. bottom line. dont listen to anything else. this has been the way its been since the 50s.

anyone who drives their car for 2000 mile without gettin on it to "break it in" is a moron. sorry but the only people i ever hear saying this are ricers.

Re:For those with rebuilt engines!
 

Well then I guess I'll just have to be a "stupid ------- ricer" because thats how I've broke in the 3 engines I've built and will continue to do so. I don't spend a shitload of cash on parts and machine work to possibily piss it all away. The ------- machine shop who does my work is who tells me to break these in... I believe them a lot more than some internet assclowns.. no offense.

So you do it your way, I'll do it mine.

Re:For those with rebuilt engines!
 

its rediculas to say you have to drive 1000-2000 miles before a engine is "broken in"

i did NOT even break my engine in when i honed the cylinders and put new rings in. no smoke no nothin. good compression...

i railed the ---- out of it after the first 10 mins of runnin it... and its been about 10k miles since i did it... and 2 oil changes...

Re:For those with rebuilt engines!
 

some people gets lucky, but some people have to be carefull, like I'm broke as ---- no because spend all my money to rebuild my blown engine with all the big names je, eagle, cometic speaking of cometic I went all way from germany to miami and spend $150 for a head Gasket, so I will make sure I break mine in the professional way, 500 miles its on papers, and I trust eric aquilar, in honda tuning, a guy who built the fastest Na civic know what he is talking about, I would not call him a stupid ricer, He is the man!!!!

Re:For those with rebuilt engines!
 

Im surprised no1 said this. but use convention 10w30 oil for the first couple hundred miles. then put in the good stuff. Synthetic is too "slippery" and wont let the rings seat right.

Re:For those with rebuilt engines!
 

I agree some people are lucky... or have more money than I do to throw away on cars. Every engine builder I know or machineshop I've dealt with always stressed to me I break my blocks in if I wanted a durable engine.

I'm also broke as ---- and the last motor I built myself was a 351W for my 95 Mustang. I saved up for a year for the rotating assembly components, machine work, balancing and all those other goodies. And for me to possibly throw it all ------- away by 'railing on it in the first 10 mins' was not an option. I let it get settled in for a good 1000 miles of light driving and its been going for 70,000 miles supercharged and not the slightest hint of trouble or performance loss.

So anyway my point of this post is, to issue a blanket statement that people who throughly break in their engines (which took a lot of hard earned money to build 9 times out of 10) are stupid ricers is retarded. I simply posted what *has* worked for me after PERSONALLY (except for the machinework.. but who has a boring bar, etc in their house?) building 3 of my own engines. If you don't like it, go rail on it 30 seconds after its started... its all you baby.

Re:For those with rebuilt engines!
 

it doesn't have anything to do with getting lucky. it physically only takes a couple mins for the rings to seal.

BTW i put cromoly rings in my integra and they're the hardest to break it... rather than cast rings. and it still only took a couple mins.

Re:For those with rebuilt engines!
 

I was just talking to jeff about this last week. I asked him to post a thread about how to break in an engine and he said he wouldn't because everyone does it different.

What I really love to hear are ricers telling me they are breaking in their USED swapped engine. I guess they think that they get rebuilt when they get shipped from japan.

Re:For those with rebuilt engines!
 

[quote=kyle

thats a funny one,if anything you need to rebuild JDM engines, I think the japanese figured they have to get rid of it after 35k, so why not just dog the ---- out of it, so its fully broke.

]
I was just talking to jeff about this last week. I asked him to post a thread about how to break in an engine and he said he wouldn't because everyone does it different.

What I really love to hear are ricers telling me they are breaking in their USED swapped engine. I guess they think that they get rebuilt when they get shipped from japan.

Re:For those with rebuilt engines!
 

[quote=rudebwoy ]
lol

everyone does do it different...

race car/track car/not daily = 20 mins @ ~2k
daily = 20mins @ ~2k change oil dont rape it for <= 500 miles change oil, now rape!

2k miles is a little overboard...

Re:For those with rebuilt engines!
 

Get it warmed up. Take it to a long stretch of road or I guess take your front wheels off the pavement and block the back wheels.
Slowly accelerate through the gears shifting at 3000-3500 until you reach 50 mph then let off the gas competely and let the car slow down by itself, downshifting when necessary to keep engine from bogging. Do this to about 20mph and then slowly accelerate upto 50mph again and repeat the whole process like 10 times in a row. Take the car back to your house keeping the rpm low and change the oil while it's still hot. Let the car completely cool down for a good few hours and you'r done.

Re:For those with rebuilt engines!
 

gimpy knows what he's talking about, and if you don't beleive him, go to www.theoldone.com and read what larry has to say about breaking in an engine, if you say he doesn't know better, then you are a stupid ricer, he also suggests to only use honda oil filters for the first 3k miles, trust me, if it was o.k. to just drive it for 20 mins and rape it, larry would know and he would tell you to do it, but do what you want, but the people that are asking b/c they don't know, follow the tried and true methods if you can't afford to rebuild/replace your engine every 50k miles..........

Re:For those with rebuilt engines!
 

well isn't that special.