Tuners, please comment on engine break in procedure
Thread Starter
Race Director
Joined: Sep 2003
Posts: 13,550
Likes: 6
From: Now in God's Country, the Big Sky, Montana!
Cruise-In 7-8-9-10 Veteran
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Tuners, please comment on engine break in procedure
I've searched and there are several different opinions on how to properly break in a motor. The most popular being 500 easy miles or go ahead right away with several WOT runs to immediately seat the rings. What are your opinions? I've received a couple of PMs as well with different procedures. What do the big boys use? ECS? A&A? I know MTI likes the gentle method.
One example of the two different procedures can be found here:
http://forums.corvetteforum.com/show....php?t=1308818
One example of the two different procedures can be found here:
http://forums.corvetteforum.com/show....php?t=1308818
Instructor
Joined: Oct 2005
Posts: 198
Likes: 0
From: Seattle Wa
I dropped the oil in my 408 after the first time it got up to operating temp... 
it was nasty. Then drove the next 500 miles by doing lots of varied rpms "spirited driving" trying to always keep the motor under a load to seat the rings. I didnt spin it past 4k ( tried not to, tire spin was kinda an issue 
) during this first 500 miles. And didnt let the motor bog. This was the procedure that the manufacture of my moly rings recomends. I would HIGHLY recomend that first oil change after initial startup after seing how much junk came out of mine.
it was nasty. Then drove the next 500 miles by doing lots of varied rpms "spirited driving" trying to always keep the motor under a load to seat the rings. I didnt spin it past 4k ( tried not to, tire spin was kinda an issue ) during this first 500 miles. And didnt let the motor bog. This was the procedure that the manufacture of my moly rings recomends. I would HIGHLY recomend that first oil change after initial startup after seing how much junk came out of mine.
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
I dropped the oil in my 408 after the first time it got up to operating temp... it was nasty. Then drove the next 500 miles by doing lots of varied rpms "spirited driving" trying to always keep the motor under a load to seat the rings. I didnt spin it past 4k ( tried not to, tire spin was kinda an issue ) during this first 500 miles. And didnt let the motor bog. This was the procedure that the manufacture of my moly rings recomends. I would HIGHLY recomend that first oil change after initial startup after seing how much junk came out of mine.
100%, Change the oil after the first 20mins or so. Then again at 500 miles... Keep the rpm varied and under 4000rpm...
