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Old 01-06-2019, 03:39 PM
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johnlanguab johnlanguab is offline
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What do y'all think about my manifolds?

I'm on the fence about replacing these manifolds. They weren't as corroded as I was expecting when I removed the starboard one.






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Old 01-06-2019, 03:53 PM
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johnlanguab johnlanguab is offline
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Too, I'm not too sure about the riser end for any of the kits I've found. It doesn't look like it's just flared like these OEM risers are.
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Old 01-06-2019, 07:53 PM
Mastar Mastar is offline
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Do they leak? If not I'd run them till then.
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Old 01-08-2019, 09:05 AM
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Look good.. give them a bath in evaporust.. if they seal up on install i wouldnt worry about it. Since they are old and if you have the cash replace. I have see worse.. the inside of the manifold look ok at first glance.

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Old 01-08-2019, 12:03 PM
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All of the corrosion that I'm seeing appears to be from water leaking down from each riser gasket and then burning off when it gets to the hot exhaust ports. I'd clean them up and make sure to replace the riser gaskets...IMO.
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Old 01-08-2019, 01:03 PM
CrashCourse316 CrashCourse316 is offline
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I would seriously recommend viewing the link below for a better option.

better option
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Old 01-09-2019, 01:25 PM
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I think your manifolds look worse than a 5 dollar hooker. Just change them and be done with it. Check out ebay too they always have them dirt cheap.
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Old 01-10-2019, 11:36 AM
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johnlanguab johnlanguab is offline
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I'm having a hard time finding a replacement or the Indmar style manifolds.

The outlets on most I come across for the 454 are Mercruiser style on the outlet end. I don't know if it'll match up.

If you guys come across some, please let me know. Otherwise, I may machine the surfaces, new gaskets, new bolts, and hope for the best.
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