Break in time?

art leong · 09-29-2012, 07:42 PM

I installed new rings in my motor. They are Gas ported moly coated .038 D shaped top ring. I'm used to .031 dykes rings with a "mirror" finish on the walls. With this setup just starting the motor and idling broke the rings in.
Now I'm using a rougher finish, and different ring (described above). Do I need to cycle them in before switching to synthetic oil? Or can I just use the dyno oil in the garage. Then change it and go run it?

randy wilson · 10-02-2012, 10:02 AM

Yes, run a round or two, or put some garage time on it before you change to synthetic oil.

BlueOval Ralph · 10-02-2012, 11:42 AM

Art
Dig out your old Direct Conection manual in the engine section there was a breakin write up as I remember

art leong · 10-02-2012, 12:07 PM

Quote:

Originally Posted by BlueOval Ralph

Art
Dig out your old Direct Conection manual in the engine section there was a breakin write up as I remember

I know how we used to do it. But that was with a .031 Dykes (nothing like the DC manual). Now I'm running a gas port ring. The last time I did the motor I was using dino oil to race with.
Now I want to switch to synthetic after the rings seat.
What I'm planning on doing is to run the engine at about 2,000 for about 20 minutes varying the rpms slightly as the time passes.
Then change the oil and go racing.

BlueOval Ralph · 10-02-2012, 12:48 PM

Engine should have some type of load on it. It's not much different with dykes or barrel face rings with gas ports.

Ed Wright · 10-02-2012, 03:06 PM

Sure wouldn't hurt a thing to just go race it with Joe Gibbs BR30 break in oil. Some guys run it all the time in bracket mode. I doubt they will seal up real well sitting in the garage.

randy wilson · 10-02-2012, 03:54 PM

It would be better to run it, but, I have let them run off and on for 10, to 20 minutes, and had the same results in leak down, and performance. If you have a good round cylinder, and proper hone, it has worked for me, just saying. Good hone breaks in rather quickly.

art leong · 10-02-2012, 05:57 PM

Quote:

Originally Posted by randy wilson

It would be better to run it, but, I have let them run off and on for 10, to 20 minutes, and had the same results in leak down, and performance. If you have a good round cylinder, and proper hone, it has worked for me, just saying. Good hone breaks in rather quickly.

That's what I've been led to believe. Going to make some noise right now.

art leong · 10-02-2012, 06:44 PM

Got it running. Ran it for 15 minutes at between 1200 and 3000 mostly 1800 or so.
Letting it cool to ambient and going to repeat.
Sounds fine so far. No smoke or eye burning (richness)

09-29-2012, 07:42 PM	#1
art leong VIP Member Join Date: Dec 2001 Location: Richmond Hill, Georgia Posts: 2,003 Likes: 0 Liked 1 Time in 1 Post	Break in time? I installed new rings in my motor. They are Gas ported moly coated .038 D shaped top ring. I'm used to .031 dykes rings with a "mirror" finish on the walls. With this setup just starting the motor and idling broke the rings in. Now I'm using a rougher finish, and different ring (described above). Do I need to cycle them in before switching to synthetic oil? Or can I just use the dyno oil in the garage. Then change it and go run it? __________________ Art Leong 2095 SS

10-02-2012, 10:02 AM	#2
randy wilson Senior Member Join Date: Jan 2007 Location: N/A Posts: 882 Likes: 0 Liked 22 Times in 22 Posts	Re: Break in time? Yes, run a round or two, or put some garage time on it before you change to synthetic oil. __________________ don,t have one

10-02-2012, 11:42 AM	#3
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: Break in time? Art Dig out your old Direct Conection manual in the engine section there was a breakin write up as I remember

10-02-2012, 12:48 PM	#5
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: Break in time? Engine should have some type of load on it. It's not much different with dykes or barrel face rings with gas ports.

10-02-2012, 03:06 PM	#6
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Break in time? Sure wouldn't hurt a thing to just go race it with Joe Gibbs BR30 break in oil. Some guys run it all the time in bracket mode. I doubt they will seal up real well sitting in the garage. __________________ Ed Wright 4156 SS/JA

10-02-2012, 03:54 PM	#7
randy wilson Senior Member Join Date: Jan 2007 Location: N/A Posts: 882 Likes: 0 Liked 22 Times in 22 Posts	Re: Break in time? It would be better to run it, but, I have let them run off and on for 10, to 20 minutes, and had the same results in leak down, and performance. If you have a good round cylinder, and proper hone, it has worked for me, just saying. Good hone breaks in rather quickly. __________________ don,t have one

10-02-2012, 06:44 PM	#9
art leong VIP Member Join Date: Dec 2001 Location: Richmond Hill, Georgia Posts: 2,003 Likes: 0 Liked 1 Time in 1 Post	Re: Break in time? Got it running. Ran it for 15 minutes at between 1200 and 3000 mostly 1800 or so. Letting it cool to ambient and going to repeat. Sounds fine so far. No smoke or eye burning (richness) __________________ Art Leong 2095 SS