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WakeskateNW 
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Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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 Topic: exhaust risersPosted: October-23-2019 at 12:35am |
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Tackling some engine maintenance projects on my '89 this winter, starting with the risers , for obvious reasons.
 upon inspection after removal , I noticed the outlet in one riser looks a little different than the other; as it has a big blob at the bottom, my question is this just years of build-up? and do I need to address it? when I pick at it with a screwdriver it seems quite solid compared to the rest of the rust corrosion elsewhere. trying to get a sense of how concerned I should be.  
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WakeskateNW
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Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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Posted: October-23-2019 at 12:43am |
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heres what the mating surfaces look like
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: October-23-2019 at 1:05am |
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How does the matching manifold side look? Are you running in brackish water? I'm thinking it's time to bite the bullet. Maybe you only need new risers but post up a pic of the manifolds
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WakeskateNW
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Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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Posted: October-23-2019 at 1:42am |
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I haven't scraped the gasket off the manifolds yet, so tbd. will report back later with some pics. I've never ran in brackish or salt and as far as I know the previous 2 owners haven't either.
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WakeskateNW
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Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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Posted: October-24-2019 at 5:59pm |
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ok heres what the manifolds look like
 seem to be in much better shape then the risers. |
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desertskier
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Joined: December-19-2006 Location: Az Status: Offline Points: 1115 |
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Posted: October-24-2019 at 8:07pm |
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Manifolds and risers don't have to see salt water to rust out. I just replaced mine with about 1700 hours of fresh water use. Your risers look about the same as mine did but your manifolds look much better. If it was me I would replace just the risers.
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: October-24-2019 at 8:38pm |
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+1 on the risers Your right Sean but I only mentioned it because he's closer to salt water than you or I.
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WakeskateNW
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Joined: December-08-2016 Location: Lake Tapps, Wa Status: Offline Points: 65 |
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Posted: October-24-2019 at 9:41pm |
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new risers it is then! appreciate the feedback, this is all new territory for me.
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outerbanked
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Joined: July-27-2017 Location: seattle Status: Offline Points: 104 |
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Posted: October-24-2019 at 11:01pm |
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I have two used ones that I keep tripping over in my garage near UW area. Picked them up along with other stuff I needed on CL. I cut the gaskets off and spent 30 sec with a flat file on each. They just need a home before I recycle them. You would need a gasket kit and new hardware. Probably new rubber exhaust hoses since you already have it this far apart. Pm me if interested.
  
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desertskier
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Joined: December-19-2006 Location: Az Status: Offline Points: 1115 |
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Posted: October-24-2019 at 11:24pm |
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Those look good!
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