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toyota tundra camshaft failures

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Old 05-29-2007, 09:28 AM
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toyota tundra camshaft failures

for such an anti-toyota forum i was rather surprised when even a search for "tundra" didn't come up with this as being posted already.

http://www.gminsidenews.com/forums/s...ad.php?t=50065

Mark Rechtin
Automotive News
May 28, 2007 - 1:00 am

LOS ANGELES -- A batch of camshaft failures in 5.7-liter V-8 engines has dinged the launch of the Toyota Tundra pickup.

Camshafts in 20 engines have snapped, says Toyota spokesman Mike Michels. The outside camshaft supplier, which Toyota declined to identify, has traced the problem to "a metallurgical defect in the casting, a flaw in the metal which they have corrected," he says.

To date, Toyota has built 30,000 of the engines, and the company is determining how many might be affected. Michels says that it was "an early batch," and that "Toyota is confident in the production from that point on."

http://www.autonews.com/apps/pbcs.dl.../70525073/1128

Last edited by anasazi; 05-29-2007 at 09:36 AM.
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Old 05-29-2007, 09:39 AM
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Ouch - the one area where Toyota looked so good compared to the competition - its drivetrain.

Frame - not so much
Interior - hell no
Gas mileage - not really

I wonder if it really was just isolated to a small batch, or if it this something that will affect all/most of the V8 motors sold so far?
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Old 05-29-2007, 09:43 AM
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The more I hear of the engines in these things, the less I like them.

I'm pretty sure they have timing belts instead of chains as well. Not what I would expect for a truck engine that is supposed to be reliable.
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Old 05-29-2007, 09:44 AM
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I'm wondering how big of a problem it is as well. 20 doesn't seem too significant if it is out of 30,000 motors already built.
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Old 05-29-2007, 09:53 AM
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"At least they found it quickly" will be the rallying cry here.
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Old 05-29-2007, 10:09 AM
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Originally Posted by Z28Wilson
"At least they found it quickly" will be the rallying cry here.
well, if it is indeed limited to only 0.06% of the motors produced then yes, that might just be a valid response

although imho it'd be hard to believe only 20 cams were produced with this "bad casting"
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Old 05-29-2007, 10:12 AM
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Many fullsize pickup only give you one good camshaft, but you wanted at least 3. Introducing the all new Toyota Tundra



for those that don't know GM and Dodge pickups have only 1 cam in the block
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Old 05-29-2007, 10:16 AM
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Originally Posted by Z28x
Many fullsize pickup only give you one good camshaft, but you wanted at least 3. Introducing the all new Toyota Tundra



for those that don't know GM and Dodge pickups have only 1 cam in the block
a new method of variable valve timing?

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Old 05-29-2007, 10:26 AM
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Originally Posted by anasazi
although imho it'd be hard to believe only 20 cams were produced with this "bad casting"
Only way to find out, is to wait and see if more go kaboom, like a 10bolt..
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Old 05-29-2007, 10:31 AM
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Originally Posted by Andrew Rhines
Only way to find out, is to wait and see if more go kaboom, like a 10bolt..
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Old 05-29-2007, 10:56 AM
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Good. The toyota people pissed me off at an 'off road' tundra test drive.
Guy who I rode with was kind of a jerk and the truck didn't impress me.

Maybe it will motivate them to make it better, which forces the competition to get better and so on and so on.
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Old 05-29-2007, 11:01 AM
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How hard is it to make a cam shaft that doesn't break?
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Old 05-29-2007, 11:17 AM
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Originally Posted by 2000GTP
I'm wondering how big of a problem it is as well. 20 doesn't seem too significant if it is out of 30,000 motors already built.
I would think 20 camshafts snapping (same problem) this early in the introduction no matter how many produced is bad...

If they've got 20 now, I could see it climbing high fast once they start getting some more miles on them, people start ragging on them harder after the "new" wears off, and they start seeing "truck" duty pulling and hauling loads...
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Old 05-29-2007, 11:21 AM
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Ummm....... Ooops?

So how does that fit into the commercials?
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Old 05-29-2007, 03:54 PM
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Originally Posted by Silverado C-10
Ummm....... Ooops?

So how does that fit into the commercials?
"You wanted a truck with a camshaft that doesn't break. Introducing the all new Chevrolet Silverado and GMC Sierra."
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