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440 rebuilt noise

K

kinghs95

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Rebuilt 440 that I just replaced lifter bc the first set had one come apart after I started it up and the lifters weren’t setup properly. So now new ones are in and it’s set properly in my opinion and I started it up to break it in and heard what sounds like a lifter on driver side hasn’t pumped up? So can I just go ahead and break it in hoping it will pump up or should I replace that one or look at it? Also what do you guys think is the best way to break an engine in 10 minutes @2500,10-2800, and then 10-2000?
 
I have been reading stories about the crap lifters that are being sold today. Seems like companies are farming out the work out of the USA and the metal used is not very good.
On the the initial run in I have heard to alternate 500 rpm up and down but no more or less than that.
I'm sure you will get a lot of different opinions on this like what is the best oil to use.
 
Are you sure that is not an exhaust leak at the heads/headers ?
I do hear something on the drivers side for sure.
Guess you could pull the valve cover again and see if you can better hear it and check that they are pumped up.
Let others chime in and see what they think.
 
69 Sleeper Bee said:
Are you sure that is not an exhaust leak at the heads/headers ?
I do hear something on the drivers side for sure.
Guess you could pull the valve cover again and see if you can better hear it and check that they are pumped up.
Let others chime in and see what they think.
Click to expand...
Yeah it could be, but I will take covers off and check it out. This is my first and anything will help bc I don’t want to hurt this motor or my wife won’t be happy haha.
 
kinghs95 said:
Yeah it could be, but I will take covers off and check it out. This is my first and anything will help bc I don’t want to hurt this motor or my wife won’t be happy haha.
Click to expand...
Yes check the lifters for sure if this is your initial break in. Hopefully it is something simple and not a bad lifter.
 
when you primed the motor did you get oil to the rock arm assemblies before starting the motor? I always prime the motor with the intake off so I can see if everything is getting oil.
 
try pulling the spark plug wires one at a time on the loud bank, if its an exhaust leak it will stop once you kill the cylinder
 
kinghs95 said:
Rebuilt 440 that I just replaced lifter bc the first set had one come apart after I started it up and the lifters weren’t setup properly. So now new ones are in and it’s set properly in my opinion and I started it up to break it in and heard what sounds like a lifter on driver side hasn’t pumped up? So can I just go ahead and break it in hoping it will pump up or should I replace that one or look at it? Also what do you guys think is the best way to break an engine in 10 minutes @2500,10-2800, and then 10-2000?
Click to expand...
What RPM was that?? Sounded awful slow for running in a cam...almost like idle speed there towards the end. I hope not.

That said it kinda sounds more like an exhaust leak, or contact somewhere at least on my speakers. Time to get the rubber hose to the ear and start hunting.
It did seem much more pronounced when you moved the camera to the front of that DS header...that's where I'd start.
 
kinghs95 said:
Rebuilt 440 that I just replaced lifter bc the first set had one come apart after I started it up and the lifters weren’t setup properly. So now new ones are in and it’s set properly in my opinion and I started it up to break it in and heard what sounds like a lifter on driver side hasn’t pumped up? So can I just go ahead and break it in hoping it will pump up or should I replace that one or look at it? Also what do you guys think is the best way to break an engine in 10 minutes @2500,10-2800, and then 10-2000?
Click to expand...
My old manual says zinc for the break in and drive it like you stole it lol vary around 2000 for 20 min.
 
That really sounds like an exhaust leak. You can try an old trick, take a piece of vacuum line and used it like a stethoscope. Move it around till you detect the leak through the hose.
 
72redbird said:
That really sounds like an exhaust leak. You can try an old trick, take a piece of vacuum line and used it like a stethoscope. Move it around till you detect the leak through the hose.
Click to expand...
Or just use a steth lol.
 
72redbird said:
That really sounds like an exhaust leak. You can try an old trick, take a piece of vacuum line and used it like a stethoscope. Move it around till you detect the leak through the hose.
Click to expand...
There you go old way very good.
 
Sounds like an exhaust leak to me too. A lifter usually sounds more metallic and sharp vs that......and I usually drive mine on break in if the car is ready to drive and well, mild burnouts were the norm. Initial start up at high idle and no leaks.....drive time :D
 
Cranky said:
Sounds like an exhaust leak to me too. A lifter usually sounds more metallic and sharp vs that......and I usually drive mine on break in if the car is ready to drive and well, mild burnouts were the norm. Initial start up at high idle and no leaks.....drive time :D
Click to expand...
Dont know if these motors truly need broken that way I am questioning?
 
I'm with the guys, start off by making sure it isn't an exhaust leak. As far as break in goes I think most go overboard and **** about it, use good oil with high zinc, prime the system and fluctuate the rpm's.
 
747mopar said:
I'm with the guys, start off by making sure it isn't an exhaust leak. As far as break in goes I think most go overboard and **** about it, use good oil with high zinc, prime the system and fluctuate the rpm's.
Click to expand...
A lot of folks think you can't shut the engine down in the middle of a break in and that isn't true. If you have a problem like a leak (coolant, fuel or oil) you have to run through it but that's a big mistake. The biggest problem is letting the engine idle because that usually means low oil pressure and that in itself can be a killer. If you're running 1500 and a leak develops....shut it down right now and fix it then fire it back up and finish the break in. Generally, my break ins run around 15 to 1800 and pay attention to temp and oil pressure. The 2500 stuff isn't needed....imo.
 
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