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-   Camaro V6 LLT Engine, Exhaust, and Bolt-Ons (http://www.camaro5.com/forums/forumdisplay.php?f=38)
-   -   Timing Chain Question (http://www.camaro5.com/forums/showthread.php?t=292061)

shrinkdoc 04-28-2013 11:34 AM

Timing Chain Question
 
Whats the difference between the failed timing chains and the replacement chains GM uses? Are they the same chain that will have the same problem or is it a different design?:iono:

nyrfan 04-28-2013 11:38 AM

Quote:

Originally Posted by shrinkdoc (Post 6479197)
Whats the difference between the failed timing chains and the replacement chains GM uses? Are they the same chain that will have the same problem or is it a different design?:iono:

It's a different chain.


Sent from my 2SS/RS

scrming 04-28-2013 06:20 PM

Quote:

Originally Posted by nyrfan (Post 6479211)
It's a different chain.


Sent from my 2SS/RS

different part number basically same chain... the issue isn't really the chains themselves... When GM replaced the chains in the Acadia, they were the new part # chains... they only lasted 50,000 miles... :thumbdown:

Untouchable Keeve 04-29-2013 11:06 AM

Wasn't this issue due in part to the original oil life monitor being set to be changed at 10,000 miles instead of 5,000?

nyrfan 04-29-2013 12:04 PM

Quote:

Originally Posted by Untouchable Keeve (Post 6482737)
Wasn't this issue due in part to the original oil life monitor being set to be changed at 10,000 miles instead of 5,000?

No, not entirely.


Sent from my 2SS/RS

slotwheels 04-29-2013 05:02 PM

Quote:

Originally Posted by scrming (Post 6480414)
different part number basically same chain... the issue isn't really the chains themselves... When GM replaced the chains in the Acadia, they were the new part # chains... they only lasted 50,000 miles... :thumbdown:

What kind of oil was used in the motor? Conventional or synthetic?

scrming 04-29-2013 07:43 PM

Quote:

Originally Posted by slotwheels (Post 6484238)
What kind of oil was used in the motor? Conventional or synthetic?

conventional.

PieNsky 05-03-2013 05:57 PM

However, if you look on a Cadillac forum at the amount of issues they ha e had with all of the revised chains while using only synthetic oil, to realize that there is a problem.

TooCool5 05-03-2013 06:05 PM

Quote:

Originally Posted by PieNsky (Post 6501915)
However, if you look on a Cadillac forum at the amount of issues they ha e had with all of the revised chains while using only synthetic oil, to realize that there is a problem.


I know GM knew they had a problem with this engine and put it in the CAMARO ANYWAY. What do you expect from a Cadillac engine.

SC2150 05-04-2013 07:16 AM

Only use full syn in the 3.6 if you want long life out of the timing chains.
http://i262.photobucket.com/albums/i...ps4db4b068.jpg

Nutbutt 05-04-2013 09:38 AM

This is the biggest worry I have with the LLT. I have used full synth from day 1 changing the oil every 4K but from what I am seeing this won't prevent the chain from eventually failing. I'm at 48K right now and I now find myself waiting for the CEL to come on :emoticon1::pray:

SNV 05-11-2013 10:53 PM

Quote:

Originally Posted by Nutbutt (Post 6503827)
This is the biggest worry I have with the LLT. I have used full synth from day 1 changing the oil every 4K but from what I am seeing this won't prevent the chain from eventually failing. I'm at 48K right now and I now find myself waiting for the CEL to come on :emoticon1::pray:

I changed my out to Mobil 1 after 500 miles or so. My oil was always changed at around 5k. Mine went at 35k miles or so. I really wish people would stop with the
Quote:

Only use full syn in the 3.6 if you want long life out of the timing chains.
. When I told the dealer I was going to change over to Mobil1 he said I would be wasting my money. I guess in a way he was right :iono:
They claimed it is an upgraded chain. Who really knows......

camaro2lt 05-11-2013 11:37 PM

do most people use mobil 1 or royal purple?

slotwheels 05-12-2013 07:37 AM

I use Mobil 1 and I believe a lot of people on the forum use Mobil 1. Does it make a difference? Who knows. :noidea: I only put around 3500 miles on my V6 a year. I hope to trade it in way before the timing chain issue for a V8.

SC2150 05-12-2013 08:56 AM

M1 is not nearly as good as it used to be. For of the shelf oil, Castrol syntec is great, pennzoil/QS as well. For a premium Amsoil, valvoline, etc. I stll cant bring myself to trust RP oil.....no problems with gear lube, etc. but we lost to many engines in the days they were title sponsor of some of the IHRA classes.

The biggest issue is using convemtional or a dexos approvend blend. After breakin, get a good full syn in and never use a conventioanl. It is a sure recipe for failure (I know of no one doing more with the LLT & LFX engines than RX). Any one that should know better and still uses conventional is just asking for failure.

And yes, the new chains are improved, but not by alot. It is also critical that you check oil levels regularly as these do NOT have low oil indicators, so you need to monitor it every few fuel fuel ups.

http://i262.photobucket.com/albums/i...ps4db4b068.jpg

:thumbsup:

ChadG 05-13-2013 09:31 PM

Quote:

Originally Posted by SC2150 (Post 6534127)
M1 is not nearly as good as it used to be. For of the shelf oil, Castrol syntec is great, pennzoil/QS as well. For a premium Amsoil, valvoline, etc. I stll cant bring myself to trust RP oil.....no problems with gear lube, etc. but we lost to many engines in the days they were title sponsor of some of the IHRA classes.

The biggest issue is using convemtional or a dexos approvend blend. After breakin, get a good full syn in and never use a conventioanl. It is a sure recipe for failure (I know of no one doing more with the LLT & LFX engines than RX). Any one that should know better and still uses conventional is just asking for failure.

And yes, the new chains are improved, but not by alot. It is also critical that you check oil levels regularly as these do NOT have low oil indicators, so you need to monitor it every few fuel fuel ups.

http://i262.photobucket.com/albums/i...ps4db4b068.jpg

:thumbsup:

Looks like I might be switching to Syntech . . . I've actually heard bad things about the Penzoil, though?

nyrfan 05-14-2013 07:04 AM

Quote:

Originally Posted by ChadG (Post 6540476)
Looks like I might be switching to Syntech . . . I've actually heard bad things about the Penzoil, though?

Penzoil platinum is getting better results then M1 on lab tests. M1 is not what it used to be and PP is a very good store bought oil. I am switching to it when I next change my oil.


Sent from my 2SS/RS

TooCool5 05-14-2013 03:31 PM

Quote:

Originally Posted by nyrfan (Post 6541540)
Penzoil platinum is getting better results then M1 on lab tests. M1 is not what it used to be and PP is a very good store bought oil. I am switching to it when I next change my oil.


Sent from my 2SS/RS

^ This ^ :headbang:

strych9 05-14-2013 03:44 PM

I fail to see how synthetic oil can keep a timing chain from stretching. Any enlightenment on the subject would be appreciated.

PieNsky 05-14-2013 10:08 PM

It didn't help the Cadillac 3.6 either. With that said, it is what goes in my Camaro.

TooCool5 05-15-2013 06:01 PM

Quote:

Originally Posted by strych9 (Post 6543411)
I fail to see how synthetic oil can keep a timing chain from stretching. Any enlightenment on the subject would be appreciated.

All so far that reported failures were using synthetic and went by the original oil monitor (9,000 - 10,000) oil change intervals.:yikes:

I don't think we ever had anyone com on here and say they changed their oil between 3,500 - 4,500 miles and the chains failed. :burnrubber:

ChadG 05-16-2013 10:34 PM

Quote:

Originally Posted by TooCool5 (Post 6548433)
All so far that reported failures were using synthetic and went by the original oil monitor (9,000 - 10,000) oil change intervals.:yikes:

I don't think we ever had anyone com on here and say they changed their oil between 3,500 - 4,500 miles and the chains failed. :burnrubber:

Yeah watch me be the first one . . . I've changed every 3k with Mobil 1 (which I know is probably flushing money down the toilet) but I'm so paranoid about these chains . . . .

strych9 05-17-2013 06:16 AM

That still doesn't make sense, from an engineering standpoint. My understanding is that the chains are stretching, not wearing. If that's true, oil or change intervals wouldn't have anything to do with that failure. It would be a weakness in the chain material.

Add to the fact that, if it were the oil that was breaking down prematurely, other components (bearings, can lobes, cylinder walls) would be damaged too. I assume that isn't happening. Until someone can post up a technical reason why this happens, I'm not buying the oil explanation.

Sent from my DROID RAZR HD using Tapatalk 2

TooCool5 05-17-2013 11:27 AM

Quote:

Originally Posted by strych9 (Post 6554336)
That still doesn't make sense, from an engineering standpoint. My understanding is that the chains are stretching, not wearing. If that's true, oil or change intervals wouldn't have anything to do with that failure. It would be a weakness in the chain material.

Add to the fact that, if it were the oil that was breaking down prematurely, other components (bearings, can lobes, cylinder walls) would be damaged too. I assume that isn't happening. Until someone can post up a technical reason why this happens, I'm not buying the oil explanation.

Sent from my DROID RAZR HD using Tapatalk 2

Wait a minute, so you guys are saying 9,000 - 10,000 mile oil changes are OK??
That is what the orig monitor let you go. :faint:

strych9 05-17-2013 12:02 PM

Quote:

Originally Posted by TooCool5 (Post 6555220)
Wait a minute, so you guys are saying 9,000 - 10,000 mile oil changes are OK??
That is what the orig monitor let you go. :faint:

My Porsche called for 15k oil changes...using good old Mobil One.

I've gone to seminars about motor oil, synthetics, etc. A C5 member (Gunny, I think) did testing and proved that there was no significant degradation or contamination in the oil after 8k miles of use.

Synthetic oil will go the distance with no problem. No OEM is going to make that claim unless it's a fact. They are responsible for the warranty, after all.

All bets are off if you're racing it.


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