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Replacing Timing Chain


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#1 Skeet

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Posted 16 September 2006 - 10:03 AM

I was told by my mechanic that I should go ahead and replace my timing chain now that he is replacing my water pump. My 2002 Gmc Sierra 4.8 Litre Engine
has approximately 125,000 miles. Would it be a good idea for him to change my
timing chain even though I don't have any problems at this time. Although, In back of my head, I ask my self is he just trying to make more money and charge me an extra additional amount or is he being honest? If so, what brand of timing chain should he use ...an after market or should he use a dealer part?

I appreciate all of your reply's!!

Skeet

#2 Mr. Smith

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Posted 16 September 2006 - 06:53 PM

I was told by my mechanic that I should go ahead and replace my timing chain now that he is replacing my water pump.  My 2002 Gmc Sierra 4.8 Litre Engine
has approximately 125,000 miles.  Would it be a good idea for him to change my
timing chain even though I don't have any problems at this time.  Although, In back of my head, I ask my self is he just trying to make more money and charge me an extra additional amount or is he being honest?  If so, what brand of timing chain should he use ...an after market or should he use a dealer part?

I appreciate all of your reply's!!

Skeet

<{POST_SNAPBACK}>



If it isn't broke leave it alone. 125K isn't anything to these motors. Find another mechanic.

#3 Norseman

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Posted 16 September 2006 - 10:28 PM

I was told by my mechanic that I should go ahead and replace my timing chain now that he is replacing my water pump.  My 2002 Gmc Sierra 4.8 Litre Engine
has approximately 125,000 miles.  Would it be a good idea for him to change my
timing chain even though I don't have any problems at this time.  Although, In back of my head, I ask my self is he just trying to make more money and charge me an extra additional amount or is he being honest?  If so, what brand of timing chain should he use ...an after market or should he use a dealer part?

I appreciate all of your reply's!!

Skeet

<{POST_SNAPBACK}>



If it isn't broke leave it alone. 125K isn't anything to these motors. Find another mechanic.

<{POST_SNAPBACK}>


I'll second that!
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#4 95Sierra2500

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Posted 17 September 2006 - 08:41 AM

He's just after more money. Timing chains are usually fine for 200k miles.
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#5 Plumbob

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Posted 17 September 2006 - 01:56 PM

I think the only reason he is wanting to go ahead and do it is because it will already be accessable. It's up to you if you get it done or not, but don't badmouth the guy, I think he is only trying to help you out...like I said if you are having the pump pulled, the timing chain is right there. If the chains have a 200k life and he has 125k on the motor...I would go ahead and git 'er done, but that's just me. :thumbs:
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#6 Mr. Smith

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Posted 17 September 2006 - 05:22 PM

I think the only reason he is wanting to go ahead and do it is because it will already be accessable.  It's up to you if you get it done or not, but don't badmouth the guy, I think he is only trying to help you out...like I said if you are having the pump pulled, the timing chain is right there.  If the chains have a 200k life and he has 125k on the motor...I would go ahead and git 'er done, but that's just me. :thumbs:

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Heck change the camshaft too cause the "mechanic" can touch it. :D

#7 Plumbob

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Posted 18 September 2006 - 10:27 AM

Anything that can be done easily while there is access to any part is what we in the aircraft maintenance world call "preventative maintenance". Kinda like when you rotate your tires...do you look at the brake rotors, shoes, lines...hit the lube points, if you drop your tranny pan for a fluid change do you change the filter??? Some people don't. Stuff like that...when the front end of the motor is already ripped apart it just takes a little extra time to swap out the chain. But I guess if you don't give a crap about the truck it doesn't matter much.
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#8 Mr. Smith

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Posted 18 September 2006 - 05:55 PM

Anything that can be done easily while there is access to any part is what we in the aircraft maintenance world call "preventative maintenance".  Kinda like when you rotate your tires...do you look at the brake rotors, shoes, lines...hit the lube points, if you drop your tranny pan for a fluid change do you change the filter???  Some people don't.  Stuff like that...when the front end of the motor is already ripped apart it just takes a little extra time to swap out the chain.  But I guess if you don't give a crap about the truck it doesn't matter much.

<{POST_SNAPBACK}>



Oh wow you went there...great. Well bub I am also in aircraft maintenance and have been for 26 years. Certified A&P as well. There are required inspections in the aircraft business. They are preventative and also mandated by the FAA. There is no such animal in the automotive world. I got my name in more logbooks than I care to remember. So since the qualification stage is complete I will just school you a bit...

In the aircraft business you don't change parts just because you have access. Parts are money and I still haven't see an engine changed because it lets say...leaked oil. You repair the leak and put back all the removed hard old parts... It is called maximum use till part failure. All about the $$..

You can do what you want with your money. The guy asked a reasonable question but in your world it is as I stated...Rip it apart and fix it more. No economy to what you stated and not getting maxi mun use of the vehicle as intended.

This thread isn't what I do in my vehicle maintenance so quit trying to spin on me here. But hey you don't have a clue to what I care about...Not your silly crap anyway. I guess it is easy to spend other folks money than your own. :thumbs:

#9 dewfpo

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Posted 18 September 2006 - 08:01 PM

It realy is optional, it depends on the owner's pocket book. IMHO, you don't need to change it. But with that said, timing belts do get some play in them and engines with your mileage typically run a little better after they have been changed. Worth the expense, probably not. But how long are you planing on keeping your truck? If you've been running synthetic oil there may not be much play in the chain. How much extra does he want to change out the chain? It's not a maintenace item. It's your call, but it's definitely.... not needed. Again, my 2 cents.

I wouldn't knock the mechanic, he's just giving you an option. That's good.

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Edited by dewfpo, 18 September 2006 - 08:04 PM.

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#10 Plumbob

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Posted 18 September 2006 - 09:03 PM

Let's not blow this out of proportion. :thumbs: Sweet jesus, he asked for some d**n opinions and got some. My comment about no giving a crap about the truck was not aimed at anybody, and if you'll read my other post you'll see I said " It's up to you if you get it done or not". Don't get all spun up about stuff, it's called an OPINION and every tax paying american has one, and yes they are just like a**holes. And one more thing, don't start with the whole " it's easier to spend other peoples money" crap, I give opinions and recommendations like everyone else in this forum. Can we play nice now :thumbs:
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Summit White 2000 Silverado 2500LD 4x4 6.0L 4L80E 3.73 w/ G80 locker
Black Westin Nerf bars
Dee Zee powdercoated black brush guard
J & B Bedliner sprayed in
Goodyear Wrangler A/T 265/75/16
35% front tint, 20% back tint
Fog lights (have yet to get BCM programmed)
JVC KD-HDR1 head unit; Infinity Reference 6012si & 6412cfp front and back; 2 10" MTX Thunder 4500 woofers w/200 watt amp

#11 fossil

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Posted 19 September 2006 - 10:43 AM

Labor wise, it will only take an extra hour tops to change the timing chain. So you pay for an extra hour labor and the cost of the chain, cover gasket and crank seal. Saying that, on the other hand I'm not sure if the new GM engines have auto tensioners on the timing chain (some of the car engines do). If they do, they dont need replacement as they will always run tight.
If the said engine was an older version 5.0 or 5.7 I'd replace the chain for sure as they do get sloppy and throws out the valve timing slightly reducing performance.

#12 Mr. Smith

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Posted 19 September 2006 - 11:25 PM

Let's not blow this out of proportion. :thumbs:  Sweet jesus, he asked for some d**n opinions and got some.  My comment about no giving a crap about the truck was not aimed at anybody, and if you'll read my other post you'll see I said " It's up to you if you get it done or not".  Don't get all spun up about stuff, it's called an OPINION and every tax paying american has one, and yes they are just like a**holes.  And one more thing, don't start with the whole " it's easier to spend other peoples money" crap, I give opinions and recommendations like everyone else in this forum.  Can we play nice now :thumbs:

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You went there so I responded in kind... :cheers: