May Spin

My local dealer has been monitoring my oil consumption over the last 4 months, it has been using a quart every 900-1000 miles.

They made a suggestion about doing the truck PVC modification, but today on advice from GM they are going to replace the rings.

I'm a little uneasy about this, the car has now 36K miles.

Need your advice and comments.

TIA.

Scott. 00 WS6 M6

<small>[ September 10, 2002, 02:24 PM: Message edited by: May Spin ]</small>

BADSS

iTrader: (7)

Had my rings replaced under warranty on my 99 SS. It didn't reduce my oil consumption any- and now I need a new shortblock. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

wrencher

iTrader: (2)

If it's a good shop & you trust them + if your getting it under warranty? Let em do it.

DONAIMIAN

iTrader: (18)

either let them do it or go with a stroker kit

Batmobile/SS

iTrader: (1)

Same result as BADSS. Went from 1qt per 1k miles to 1 qt per 300-700 after about 2k miles after dealer re-ring. Now I am collecting parts for a new shortblock as its acting like the rod bearings are going. Losing oil pressure and increased noise

Y2K1 SS 5.0 THIS

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Had my rings replaced under warranty on my 99 SS. It didn't reduce my oil consumption any- and now I need a new shortblock. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I had the same problem, my engine is now apart at chevrolet awaiting a GM rep to come look at it to see if they are going to cover it under warranty or not. I almost guarentee they are gonna try and pin it on racing of some sort. My bottom end is fine, however #5 and #7 are both full of oil, my headers and cats are ruined as well as all my O2 sensors... block is toast as well unless I get new pistons. Bad thing is its been sitting there a month and the rep hasnt even looked at it yet so I called GM and they consider my car "low priority" because its no longer under the factory warranty... so could be another month before they even look at it.

BADSS

iTrader: (7)

I remember when GM first came out with the TSB for the new rings- they were calling it a "clean kill"- in other words, it was solving the oil consumption problems in 100% of cases. This clearly is NOT the case- in fact, in many cases the problems got WORSE after the new rings (mine included). Here is my theory- the rings may or may not do what they are supposed to do- but that is only addressing half the problem. Many of the LS1 engines have a cylinder or two which is out of round, which is also what causes the cold engine knock (piston slap) due to excessive piston to bore clearance. The piston is basically rocking back and forth inside the bore (my engine does this, as well). I believe this could be a contributing factor in the oil consumption, as well. Clearly, the new rings do not address this issue at all.

If I were you, I would insist on a new engine if you are still under warranty. No way would I trust a dealership to tear my motor apart again. <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" />

May Spin

Thanks for your comments.

It would seem that some have suffered from bad work from their dealers when replacing the rings. I would doubt GM would be willing to place a new engine in my car, it would be nice though.

If 01/02's still have the problem then I to wonder if it is the rings. And indeed what BADSS said in regards to some cylinders being out-of-round. Then in that case It will be the luck of the draw, as some do this and others don't.

I wonder if there is any correlation between piston slap and high oil consumption.

Scott. 00 WS6 M6.

99GMC Can

Corvette owners got new pistons on the same problem. Apparently the piston design cause oil consumption at high RPM and small load. New rings won't change the design flaw. Anyone else heard about this?

wrencher

iTrader: (2)

Same piston F OR Y BODY. It just depends who work on car. If you dont have a block that got an extra hole in it you won't get a shortblock.They'll always try to fix what you got, this is all the factory warranty will pay for.

BADSS

iTrader: (7)

There was a TSB out for the piston slap at one point that called for the new, coated pistons. I have recently heard that this TSB is basically a myth- anyone out there get the new pistons installed per the TSB? Sounds like a band-aid solution, anyway- unless they address the imperfections in the cylinder bore by honing or boring the cylinder and then installing pistons that fit CORRECTLY- there will still be a problem. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

BADSS

iTrader: (7)

One more thing- I would not completely dismiss the idea of getting a new engine. I have read about a handful of cases where owners raised enough hell with their dealership to get a new engine. You would be in for a fight- but it is not out of the realm of possibility.

Budrau01Z06

Hey Guys; I had the oil consumption problem with my 2001 Z06. It started at about 2000 miles and the dealer put a new PVC setup on it first which did nothing and then they made me wait until I had over 5000 miles on the car and then they put new rings in the car. Well, about 1500 miles later with the car still using a quart or two a week , the Engine Locked Up pulling out of the dealership parking lot. Well, they put a brand new enging in the car and the only Oil the car has seen is Valvoline 10/30. I've done everything to the car so far and race it all the time; 10:87/131mph ; 585rwhp & 620 rwtq and maybe after 5000 miles on the new motor it has used 1/2 a quart.

BADSS

iTrader: (7)

I had the ring job done on my motor, and if anything, the oil consumption got worse- it burned about a quart every 500-600 miles. Now, I have low compression and a knocking motor, although it hasn't completely blown up. But I also have aftermarket heads and cam, so GM is not going to take any responsibility for my problems. The truth is the problems existed before the H/C were installed, and they probably just aggrevated the condition by increasing HP and cylinder pressure. My car only has 25K miles, and has not been abused at all- a grand total of five quarter mile passes, no nitrous, and no blown shifts or overreving the motor. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

MBC Racing

iTrader: (3)

My motor had a re-ring job and now it is JUNK!!!! Completely destroyed.... The journal for #5 on the crank is blue, rods #5 and 6 disentegrated, one piston is jammed sideways in the bore. I am going to try to get them to replace it under warrantee. This is BS that my motor is now trashed. I am also trying to gather some data that the re-ring jobs are causing other peoples motors to break. ANY info will be appreciated.

Thanks
Brad oblak

LS1derfull

I believe that re ring only helps oil consumption on cars where driver pulls hi vaccuum driving around in lower gears as a habit.Diagnosing out of round bore is just a matter of pulling heads, this needs to be checked before any further action is taken. If out of round condition is found with dial bore gauge readings,than this is your ticket to a new shortblock at least.This is how GM see"s it and you need to insist this is the approach the Tech takes to diagnosing your oil consumption. Now i know you guys might get mad at what im about to say, but if i was leaving my Car for some flat rate tech to completely take apart, i would personally talk to him and assure him to take his time working on motor and that i would give him like $100 bucks to make sure he wasnt worried about beating the clock,which includes using cleaning discs that leave debris in motor and B.S.other short cutting steps!
Whats a $100 bucks or so out of pocket when it could make the difference between failure and sucess? Oil consumption on all LS1 motors needs to be addressed on pcv system as well, there is not adequate valve cover baffling with limited area of valve covers.External seperation must be performed to keep oil out of intake manifold.

Orange Krush

Professor U need to open up your own shop ! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

I know I would give U plenty of business if I had some cash ! <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" />

2xLS1

iTrader: (25)

Question. These dealers that are doing re-rings. Are they honing the cylinders with the correct finish called for by the ring mfgr? Correct cross hatch pattern? Unless they are sending the block out to a machine shop I don't see new rings fixing anything. I don't know of any dealers having Sunnen honing machines. I can't see putting new rings in cylinders that are already glazed.

LS1derfull

The lower compression ring and the oil ring expander are the only ones to be replaced,you dont need to hone cylinders for this because they say it is a radial tension issue, and second ring has sharp edge that breaks in easy. The new second ring has more tension helping it from becoming unstuck at hi rpm, hi manifold vacuum situations. The expander has more tension to help rail scrapers clear oil off cylinder wall more effectively.See my above post to understand when this fix could be effective IMO

<small>[ September 30, 2002, 05:13 PM: Message edited by: LS1derfull ]</small>

M3EATER

There is NO WAY in **** that I'd let the dealer pull my whole front end & engine apart.

I decided to deal with the slap & oil consumption rather that have all kinds of NEW problems from them going into it! <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" />

It's just not worth it.
<img border="0" alt="[fight]" title="" src="graemlins/gr_punch.gif" />