Anybody here have a problem with chrome moly speed pro rings sealing up? I have heard one instance where it took about 1500 miles and than it quit smoking. My 87 gn smokes after the rebuild, it is getting less but still a decent amount. Anyone have some experience with this?
rings
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Shouldn't be an issue.... if it was synthetic.... I've heard of problems with ring seating on a new build...... have to run dino oil for awhile first.
Thats EXACTLY whats goin on!!! Did it go away? Mine seems to be less than at first and is intermittent on rare occasions. Thanks
-Andrew
boostingbuick
Going to be buried in this.
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Mine smoked for about 100 miles. Used vr50 10w30 oil. No issues now with a few 1000 miles on it.
J-B Racing
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I try to stay away from Chrome Rings....NEVER SEAL
turbo nasty
Turbo Dojo / MNTR
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I have always heard you had to get on the car real good several times to get the chrome rings to seat. What I had to do in a mopar 383 PI motor.
BlackBandit
God loves Buicks!
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Correct. Cylinder pressure seals rings so if you get on it initially the added cylinder pressure will help the rings seat. After several hundred miles I have a hard time believing they're going to seat much more as the hone should be pretty much worn down. It's worth a shot though. I'd take it out and get up to 60 or so in 3rd and make a couple of pulls at 12-15 psi. If you can figure out how to do it in 4th without it down shifting that would be better. Basically going for sustained high load pulls that don't go over about 4000-4500 rpm.
blown okie
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sounds like your mechanic doesn't know anything about wall finish or ring selection, if it takes that long for the ring to "seat" somebody messed up somewhere, or some is wrong that got overlooked. just my $.02
oh and btw a properly finished cylinder should look something this-
doing it like this the rings are basically seated on the with the engine on the stand, when we fire an engine fresh like this it doesn't puff a bit of smoke, & if it does its only for an instant
and also to my knowledge there is no such thing as a chrome-moly ring,
there are chrome rings, and moly(or plasma-moly rings)rings, but not a ring that has both.
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For those running total seal rings you need to restrict the PCV if you still have one or it will crop dust. Id go to a .050in orifice for the PCV. Ive noticed that a lot of machine shops finish the cylinders too smooth and the ring seal is inadequate after break in. Rings should seat in a few minutes of run time. If they take longer then they are the wrong rings for the application imo. If using moly rings DO NOT oil the hell out of the rings and walls when installing. Use light oil only and dont pour it on. A thin coat on the walls is all thats needed. ATF or even WD40 works well. You dont want a bunch of oil trapped between the rings on break in or they wont break in and the walls will glaze.
Great info here. I didnt read your post before i posted. You said some of the same things regarding break in. Lol!
Total seals work when the directions are followed in my experiences. Gas porting is for drag racing only. The ports will clog with carbon and cease to function in a street car. It takes a lot of trial and error on the gas porting also. Too much is no good and to little will compromise the seal. Its rarely done when boost is thrown in an engine also. Come to think of it i cant think of anyone i know that has gas ported pistons in their race car.
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