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Timing Belt Failures On Tundras?

Timing belt Tundra

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#21 ottorogers

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Posted 19 October 2018 - 07:26 PM

Ya on my last Tundra I did the 90k maintainance at 180k then another one at 260k.  You are right the concequence is dire but I'm an enganier "at least I think thats the way I think you spell it" and if the company says it might fail at 90k miles the probability is vary vary low, better than a half life and maybe more like 3 to 6 times.  So I'm not saying that you should do it, I'm just saying don't worry too much.  You are more likely to have a water pump or surpentine belt issue first. 

I agree 100% with the post above, it is most likely good for 200,000 miles, but I would be more worried about 13 years and deterioration 


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#22 Wallowa

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Posted 25 October 2018 - 12:26 AM

Well thanks to all that have posted...it all boils down to aversion to risk and cost of a belt failure...my 32 valve 4.7L Lexus motored '05 Tundra would be only good to salvage or as a boat anchor if that motor tries to self-digest...to my knowledge Toyota doesn't rebuild them nor offers a replacement motor...and turning it into a peddle car is not an option.

 

Sooooo, at 42K and 14 years on the clock, even though it is a garaged and pampered [used but not abused] truck I am biting the bullet to the tune of about $900 for the belt, pump, pulley's and new serpentine belt...why?  Because we are off roaders that enjoy isolated places that are hard to get to and even harder to walk out of...next Springs 6K NWTs trip pushed me to get it done rather than roll the dice...

 

Now let's talk about motor oil............just kidding!

 

FYI...being an old fart...I am saving all the old parts...no sure why, but at least the water pump might need replacing in the future and that will not grenade the motor if it starts leaking...God I would hate to tackle that repair by myself!

 

 

Thanks again everyone,

Phil


Edited by Wallowa, 25 October 2018 - 12:28 AM.

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#23 klahanie

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Posted 25 October 2018 - 03:03 AM

 Phil, for the sake of us curious ones in the peanut gallery, do tell what the old belt looks like, condition wise.


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#24 fish more

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Posted 25 October 2018 - 02:43 PM

It is not a good choice to roll the dice on your timing belt, when it breaks, it leaves you parked right there !! Working at a Toyota Dealer service department, I have seen several belts break and cause severe damage. Don't let this happen to you, spend the money and have it replaced, even if you don't have many miles on engine, time will degrade the belt. It is not worth the problems you will face if it breaks !!


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#25 Wallowa

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Posted 25 October 2018 - 04:00 PM

It is not a good choice to roll the dice on your timing belt, when it breaks, it leaves you parked right there !! Working at a Toyota Dealer service department, I have seen several belts break and cause severe damage. Don't let this happen to you, spend the money and have it replaced, even if you don't have many miles on engine, time will degrade the belt. It is not worth the problems you will face if it breaks !!

 

 

Agreed; like I said above...but I do not really comprehend how a timing belt inside a cover is going to wear out faster than say a serpentine belt that is exposed...yes, rubber or derivatives will 'dry out' over time....and heat is not their friend...but heck our old time skinny fan belts with 50's materials lasted longer than my Tundra belt...well to be honest the motors then were only good for about 50 K.. :D

 

Also had it explained to me that an interference motor is capable of higher compression hence better power...but then again the newer Tundra trks are chains and not belts....my Tundra is a fine machine but I would prefer to not have a rubber timing belt..hey, it is what it is..

 

Yes, I will inspect the belts that are removed and report back on this thread...but so many variables in play and I doubt that I will see cracks or fraying, if the belts do that prior to breaking...

 

Phil


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#26 Vic Harder

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Posted 26 October 2018 - 12:01 AM

nah, they don't crack/fray they stretch, and then skip a tooth and then boooom!  $$$


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#27 Wallowa

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Posted 26 October 2018 - 02:59 AM

Stretch...Hmmmm...not with time though, mileage would stretch a belt...does matter I am ponying up the bucks to get it changed...just that time alone degrading the timing belt [or stretching it..] in 10 years regardless of mileage defies logic..

 

Phil


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#28 Vic Harder

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Posted 26 October 2018 - 08:26 AM

yeah ive changed a few for guys in our Miata club, lots of years, and veronica low miles. they look good on removal. go figure
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#29 Wallowa

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Posted 30 October 2018 - 11:01 PM



 Phil, for the sake of us curious ones in the peanut gallery, do tell what the old belt looks like, condition wise.

 

 

OK...timing belt, tensioner, two pulleys, serpentine belt, anti-freeze, thermostat...done...cost $855.93..FYI...work done at local garage [Mid-Town Motors, Enterprise @ 5.5 hours] with a good reputation; Roger's Toyota Lewiston kept dicking me around and blowing off requests for information, costs and when I could schedule...they lost a customer.

 

I retained all the parts that were removed; can't really see me replacing them on the road...as expected they all look good..no signs of rough bearings or stress and cracking on belts, pulleys, tensioner and pump..all tight and functioning...

 

No looking back..especially after I thought about what the Toyota "100,000" miles limit meant....wear on the components [and when need to change them out] is metered by RPMs expected over the 100K miles...with the Hawk in place I never use overdrive unless on very long downgrades and often use "3" on hills...couple that with the many miles crawling in "2nd" or even "1st" off road...my engine has seen a disproportionate number of RPMs for the 41,321 miles on odometer...I never abuse the Tundra but it is working for a living.

 

In the end, peace of mind...my odds against getting stuck in BFE [or Yukon] just improved...Now back to our Alaska, Yukon, NWT and BC trip planning for this coming May!  :D

 

Thanks for all the input and recommendations...appreciated.

 

Phil


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#30 klahanie

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Posted 30 October 2018 - 11:22 PM

^ Good deal !

 

and thx for the follow up. Better to change it now then a few years down the road, 6 months before you trade it in. Bonus is finding a good service shop and establishing a relationship.

 

Peace of mind is worth it, besides, can't speak for AK but, if it had happened up here ... ya know everything is more $$$

 

You've been warned ;)


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