Seatimg rings
12-20-2018, 09:21 AM
#1
Seatimg rings
Ok, so another one bit the dust. 2008 Triton 5.4. Long story short, replaced engine. In between 2&3k now, running conventional oil for 1st prob 5k for ring seating before moving to synthetic. My question is, is there any thimg else I should do to ensure good ring seating? I’ve driven it conservatively for the miles so far. But I’ve read things like open it up on a good mile long expressway entrance ramp to help seat rings. Is this hogwash? Thanks in advance for your comments.
12-20-2018, 09:50 AM
#2
Senior Member
On every engine Ive rebuilt, Ive seated in rings by creating alot of cylinder pressure. And I do it well before 2K miles.
But, you are not hurting anything by driving it conservatively. It will just take a little longer, burn a little oil, not have full compression.
My bud rebuilt his daughters 4 cyl Honda. Beat the crap out of it for quite a few miles. The rings still didnt seat and stop burning oil until close to 5k miles.
Whatever you feel comfortable with. Its not going to hurt anything either way.
But, you are not hurting anything by driving it conservatively. It will just take a little longer, burn a little oil, not have full compression.
My bud rebuilt his daughters 4 cyl Honda. Beat the crap out of it for quite a few miles. The rings still didnt seat and stop burning oil until close to 5k miles.
Whatever you feel comfortable with. Its not going to hurt anything either way.
12-20-2018, 11:47 AM
#3
I personally like to break in engines by running them up to higher RPMs 4500ish at about 3/4 throttle and also using engine braking on the way back down. Also try to vary the RPMs and not just cruise at a steady RPM. I don't beat the crap out of them but I don't like babying them. Rings should seat pretty quick though.
12-22-2018, 08:42 PM
#4
For years all of my machining business was handled by a gentleman whose micrometers had numbers on them that could no longer be seen and Dick was the best I have ever seen. RIP. He gave me a bit of information in 73 or 74 that I always stuck to when it came to seating rings. Find a long grade and put the car in high gear and let it pull. If you were driving an auto the trick was to disconnect the kickdown cable, get it to high gear and load it up. Never had a ring fail to seat. The other part of the trick was to use WD-40 for piston install. The last thing you wanted to do was submerge the rings in oil. This sealed everything to the cylinder wall and turned the piston and rings into an oil pump.
12-22-2018, 08:57 PM
#5
The way we did it at the dealer is to run the engine at 2k rpm's with no coolant for about 30 secs, shut it down and let cool. Top up the coolant and go for a drive driving it the way one would do in real world operation.
Don't baby it but don't get crazy either. Drive it like you will for as long as you own it.
Never had any issues at all.
.
Don't baby it but don't get crazy either. Drive it like you will for as long as you own it.
Never had any issues at all.
.
Last edited by RLXXI; 12-22-2018 at 09:02 PM.
12-22-2018, 10:53 PM
#7
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12-23-2018, 07:53 AM
#9
Senior Member
