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How many miles on your 3.4L timing belt?

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Old 03-26-2005, 09:46 PM
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2000, belt and pump changed recently at 85k. better safe than sorry.
Old 03-26-2005, 09:50 PM
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Originally Posted by Jared Ajlouny
mine has 3000 on it. the old one had 102,000 on it. if the belt breaks it WILL F up your engine!!!!!! the valves will get thrashed!!!
edit: I had originally posted a reference to the "Gates Guide" (Gates is a manufacturer of engine belts). I've removed the link since the guide has been shown to be wrong.



Bruce... you're right, I did forget.

Last edited by midiwall; 03-31-2005 at 09:24 AM.
Old 03-26-2005, 10:27 PM
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My dealership recommends timing belt replacement at 90,000 miles. I'm almost at 60,000 so they told me to wait a couple years. Right now to have it done there would cost $220.
Old 03-27-2005, 06:13 AM
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If your not careful you will be changing the valves to tough guy.
Old 03-27-2005, 08:05 AM
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Originally Posted by bamachem
w/ the right tools, the belt can be changed in about an hour in an emergency.

when doing maintenance, the waterpump gets changed, adding about an hour to the job.
One hour! ......I'd like to see that.
If you can even do it in 2 you'd make serious $$$$ as a mechanic.

Last edited by MTL_4runner; 03-27-2005 at 08:07 AM.
Old 03-27-2005, 08:19 AM
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I got mine done at about 96k. I was told by the Toyota dealership that the 3rd gen 3.4 liter is a NON interference motor. Anyone know the official word on this? I have 150k now and need to replace asap if it is an interference.
Old 03-27-2005, 09:03 AM
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Originally Posted by Yobroe
I got mine done at about 96k. I was told by the Toyota dealership that the 3rd gen 3.4 liter is a NON interference motor. Anyone know the official word on this? I have 150k now and need to replace asap if it is an interference.
According to the Gates (Gates makes timing belts) guide link mentioned earlier, the 3.4 is an interference engine, the 3.0 is a non-interference engine.
Old 03-27-2005, 10:52 AM
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That's my understanding too but I haven't tested the theory. The 3.0 only has 2 valves and the 3.4 has 4. My guess is that the 3.4 is a higher compression engine too and hence would be more likely an interference motor.
I just had the Dealer do the belt because I was lazy and was going to have them do an alignment anyway. Turns out they refused to do the alignment and already had the motor apart when they called me.

Something about too much lift and suspension changes. Whimps!

Last edited by LarsDennert; 03-27-2005 at 10:54 AM. Reason: and...
Old 03-27-2005, 11:19 AM
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77K on mine
Old 03-27-2005, 05:29 PM
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Originally Posted by midiwall
Just to backup Jared... according to the Gates guide:

http://gates.com/brochure.cfm?brochu...cation_id=3487
(download the "Timing Belt Replacement Guide" PDF)

The 3.0 from 88-95 is a non-interference engine, but the 3.4 from 96-02 is an interference engine. The 4.7 from 03-present is a candidate for trouble as well.



Bruce... you're right, I did forget.
Intresting that that particular site says it's a interference engine and another site I found says it's not, I always thought the 3.4L were non-interference. I guess when I get the time I'll check with the spare engine in my backyard...
Old 03-27-2005, 06:19 PM
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ok seriously, someones gotta get a straight asnwer about the 96-02 interface or non-interface. I have a 96 with 185km's on it, and wonder if i should change it at 200 or not.
Old 03-27-2005, 08:53 PM
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The owners manual recommends replacing the T belt on a 3.4 at 90k miles.

It is an interference motor wo I wouldn't chance going much over 90k....its asking for an expensive repair.
Old 03-28-2005, 12:31 AM
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how much did you guys pay to do your timing belts? I heard guys paying somthing like $500 to do that repair. I guess once I have that done, I might as well do that TFAL fan mod to.
Old 03-28-2005, 05:34 AM
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Originally Posted by Bigkahuna808
how much did you guys pay to do your timing belts? I heard guys paying somthing like $500 to do that repair.
The belt itself is about $35 online, or probably $60 at normal dealer prices. Figure 2-3 hours of labor, at $75/hour and you're at about $210-$285.
Old 03-28-2005, 05:36 AM
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For what it's worth, I called 2 dealers here and they both confirmed the 3.4L as non-interferance.
Old 03-28-2005, 06:23 AM
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I just called a dealer too and they said non-interference.
Old 03-28-2005, 06:41 AM
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Originally Posted by Uneasy Rider
The owners manual recommends replacing the T belt on a 3.4 at 90k miles.

It is an interference motor wo I wouldn't chance going much over 90k....its asking for an expensive repair.
I follow the suggested intervals. Too expensive of a vehicle to chance it
Old 03-28-2005, 07:01 AM
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Originally Posted by X-AWDriver
I just called a dealer too and they said non-interference.
It is a non interference motor.....not sure why it would be stated otherwise.
Old 03-28-2005, 07:26 AM
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thats bs....half the dealers dont know what they are talking abot, why are we trustig them now? my dads friend who works at the toyota dealership by my house knows what he talking about and he said the vavles will get screwed up if the timing belt breaks
Old 03-28-2005, 08:27 AM
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I wasn't talking to a salesman,I talked to the mechanics and two of them said no damage would result but who cares;I'm getting mine done this next week.


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