Cracked manifold. Replace with headers? - TundraTalk.net - Toyota Tundra Discussion Forum
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#1 (permalink) Old 01-03-2012, 11:08 AM
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Cracked manifold. Replace with headers?

Hey guys -

After 6 months of trying to get Toyota to figure out my strange engine noise, I finally took it to a reputable local shop and they found the issue within 10 minutes. A crack in the manifold on the driver side. Why Toyota couldn't find this after multiple visits to the service department is a joke, but not unexpected. They also claimed it was a normal noise that all Tundras make.

Anyway, the cost of a replacement OEM manifold is about $450. The labor is about $500. Would it make more sense to do something like the Thorley headers instead of spending all that money on the OEM manifold? Would it require additional time to do headers instead of manifold replacement?

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Last edited by nickstl77; 01-03-2012 at 11:11 AM.
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#2 (permalink) Old 01-03-2012, 11:21 AM
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For $950 make a mod out of it.


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#3 (permalink) Old 01-03-2012, 11:26 AM
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curious, how many miles on your truck? would this be covered under the 60k powertrain?

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#4 (permalink) Old 01-03-2012, 11:26 AM
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dt long tubes are gonna require you to redo your exhaust bro.


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#5 (permalink) Old 01-03-2012, 11:33 AM
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curious, how many miles on your truck? would this be covered under the 60k powertrain?
45k. And no, the Exhaust is specifically written out of the drivetrain warranty.

DC LTD 5.7 4x4
Zone 5" + 2" BDS shims + 3" rear shackles
KMC xD Monster 20's +35mm
37x12.5x20 Trail Graps
Maganaflow
Too many other mods to list...
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#6 (permalink) Old 01-03-2012, 11:34 AM
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dt long tubes are gonna require you to redo your exhaust bro.
Yea, I have no problem with that, was looking at doing Corsa sport anyway. What else would need to be altered to make the long tubes work?

DC LTD 5.7 4x4
Zone 5" + 2" BDS shims + 3" rear shackles
KMC xD Monster 20's +35mm
37x12.5x20 Trail Graps
Maganaflow
Too many other mods to list...
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#7 (permalink) Old 01-03-2012, 11:48 AM
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Have you read thru my DT long tube thread? If you're on the fence, do it. You wont be disappointed. I recommend the OBX headers over the DTs.
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#8 (permalink) Old 01-03-2012, 12:01 PM
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I would say just bite the bullet and go with LT Headers, both OBX and DT are great brands! Just a warning if you do run LT's and add the Corsa Sport CBE it'll be pretty dang loud, just ask SoCal57Chevy Running a good dual in/out Magnaflow muffler with the LT's wouldn't be obnoxiously loud but it will have a really deep tone.

I'm still wishing my freaking manifolds would leak so I can convert to LT's.....


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#9 (permalink) Old 01-03-2012, 12:15 PM
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If not let me know I have a 2 sets of manifolds in my dads garage. I'm sure we can work something out. I don't have the gaskets for them but it will be cheaper than $450 and you could do the work your self. Just soak all nuts in wd40 the night before.

However this is the best excuse to go long tubes lol.

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#10 (permalink) Old 01-03-2012, 12:23 PM
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Thanks, Socal.. still trying to figure out what I want to do.

Do you guys think the shop's estimate of 5 hours labor to replace one side is out of line?

DC LTD 5.7 4x4
Zone 5" + 2" BDS shims + 3" rear shackles
KMC xD Monster 20's +35mm
37x12.5x20 Trail Graps
Maganaflow
Too many other mods to list...
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#11 (permalink) Old 01-03-2012, 12:37 PM
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Originally Posted by nickstl77 View Post
Thanks, Socal.. still trying to figure out what I want to do.

Do you guys think the shop's estimate of 5 hours labor to replace one side is out of line?
Yes. Took me about 4 to replace both with DTs. I was on the floor with no air tools. They can easily do it in 2-3 hours.
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#12 (permalink) Old 01-03-2012, 12:40 PM
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Hey, it just hit me. Ask TigerKing who did his DTs. He got a smoking deal on his install. You're both in STL.
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#13 (permalink) Old 01-03-2012, 12:43 PM
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Sweeeeet... I'll look him up.

What really bothers me is I feel there must be some inherent defect with the stock manifolds if it is cracking after 30k miles. It doesn't really make sense to pay for a new OEM driver side manifold if I'm just getting right back into another one that probably has some defect.

DC LTD 5.7 4x4
Zone 5" + 2" BDS shims + 3" rear shackles
KMC xD Monster 20's +35mm
37x12.5x20 Trail Graps
Maganaflow
Too many other mods to list...
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#14 (permalink) Old 01-03-2012, 01:28 PM
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Quote:
Originally Posted by nickstl77 View Post
Sweeeeet... I'll look him up.

What really bothers me is I feel there must be some inherent defect with the stock manifolds if it is cracking after 30k miles. It doesn't really make sense to pay for a new OEM driver side manifold if I'm just getting right back into another one that probably has some defect.
We had this problem on early First Gens as well. It made more sense to me to convert to LT headers than to just install another OEM manifold that may
leak or crack in the future. Surprised to hear about it on 2nd Gen though. If
you plan to keep the truck for awhile, I would go with the change to headers
and enjoy.



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#15 (permalink) Old 01-03-2012, 03:54 PM
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Quote:
Originally Posted by nickstl77 View Post
45k. And no, the Exhaust is specifically written out of the drivetrain warranty.
If you took your truck into the dealer for the same issue within 3yr/36k miles and they didn't fix the issue, you can call Toyota Corp and they may cover it since they "missed" it while it was under warranty. Worth a try..you'll never know..
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