Author Topic: Exhaust Manifold replacement intervals on I/Os?  (Read 137 times)

0 Members and 1 Guest are viewing this topic.

Offline 185GXSF-Guy

  • Full Member
  • ***
  • Posts: 77
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

  • Administrator
  • Hero Member
  • *****
  • Posts: 5919
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

  • Donate members
  • Hero Member
  • *****
  • Posts: 416
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.