# 2002 saturn ls2 exhaust monifold gone bad?

**URL:** <https://community.cartalk.com/t/2002-saturn-ls2-exhaust-monifold-gone-bad/82190>\
**Category:** Maintenance/Repairs\
**Created:** [November 11, 2013, 9:14am UTC](https://community.cartalk.com/t/2002-saturn-ls2-exhaust-monifold-gone-bad/82190 "2013-11-11T09:14:47Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\
**Post date:** [November 11, 2013, 9:14am UTC](https://community.cartalk.com/t/2002-saturn-ls2-exhaust-monifold-gone-bad/82190/1 "2013-11-11T09:14:47Z")

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Hear the pfuff sound and smell exhaust gasses, preliminary inspection cracks in the exhaust manifold at the upper bolts. Sure we will go to the junkyard and pop on a new manifold,but any clue why it is cracked?

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [November 11, 2013, 9:35am UTC](https://community.cartalk.com/t/2002-saturn-ls2-exhaust-monifold-gone-bad/82190/2 "2013-11-11T09:35:17Z")

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The exhaust manifold is made from cast steel. The head is made of cast aluminum. These two materials expand and contract at different rates when heated up and cooled down.

Over time, the more brittle material fails first from this heat cycle.

Toyota’s had this same problem. Their fix was a beefer exhaust manifold with a more open heat sheild.

Tester

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**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\
**Post date:** [December 30, 2018, 12:54am UTC](https://community.cartalk.com/t/2002-saturn-ls2-exhaust-monifold-gone-bad/82190/3 "2018-12-30T00:54:04Z")

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Why is this here?

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [December 30, 2018, 1:03am UTC](https://community.cartalk.com/t/2002-saturn-ls2-exhaust-monifold-gone-bad/82190/4 "2018-12-30T01:03:17Z")

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An existential question if I ever heard one … 😉

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**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [December 30, 2018, 1:09am UTC](https://community.cartalk.com/t/2002-saturn-ls2-exhaust-monifold-gone-bad/82190/5 "2018-12-30T01:09:57Z")

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> [@Barkydog](#):
>
> Why is this here?

Because YOU originally started the discussion

And because YOU revived it

😏