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Old March 16th, 2003, 03:44 PM
dmorley dmorley is offline
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Default Mercury one piece exhaust manifolds

Mercury used a one piece exhaust manifold on their 4.3 liter engines between 96-99. Are there any drawbacks to these?
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Old March 17th, 2003, 03:56 AM
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magster65 magster65 is offline
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Default Re: Mercury one piece exhaust manifolds

I was looking at a boat that had that engine/manifold combo. I went to a local shop to query a friend, he said they crack occasionally. The boat had sold by the time I returned.
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Old March 19th, 2003, 07:27 AM
dmorley dmorley is offline
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Default Re: Mercury one piece exhaust manifolds

I just found out a big limitation of the Mercury one piece exhaust manifolds: I can't install a full closed cooling system and had to settle for a half system and guess will replace the manifolds when they rust out at $575 a piece.
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