Author Topic: Exhaust Manifold replacement intervals on I/Os?  (Read 1681 times)

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Offline 185GXSF-Guy

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Exhaust Manifold replacement intervals on I/Os?
« on: September 24, 2020, 09:40:54 AM »
How often do you guys replace your exhaust manifolds/risers on I/O motors when used in freshwater exclusively?
2001 GX 185 SF

Offline dorelse

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Re: Exhaust Manifold replacement intervals on I/Os?
« Reply #1 on: September 24, 2020, 10:04:38 AM »
How often do you guys replace your exhaust manifolds/risers on I/O motors when used in freshwater exclusively?

Never.  But...my boats are winterized every year with antifreeze sitting in them helping stop any corrosion.
1990 Sierra 1700

Offline Carlson_from_Germany

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Re: Exhaust Manifold replacement intervals on I/Os?
« Reply #2 on: September 26, 2020, 09:13:43 AM »
I replaced mine after 35 years. Now they are stainless... So probably another 50 to go.