Riser and raw water hose condition pictures - Opinions on replacement of hose

[ejnichol]

Opinions Thanks

The boat is 2007 5.0GXI SX-A outdrive. 370 hours total 99 % fresh water, 2 weeks 2025 3 weeks 2026 in salt water 40 hours approximate

This raw water hose is original and still feels flexible and I don't see any cracking etcc. Its obviously not new but feels like its got a few years left. Would you replace it?


The manifolds look ok. This is the starboard side and they've never been open for inspection. Based on this side appearance and the ports not weeping I'm leaving port untouched. These risers and manifolds seem to last a long time in fresh water

 

[BRICH1260]

I think you have a few years left in that hose.

 

[Lou C]

The manifold you showed in the pic, you have to clean up the mating surfaces for the gasket to really be able to tell. Cooling passages look ok though. Hoses I replace only when they get hard & cracked

 

[tpenfield]

The hose looks fine. After you put the manifold/riser back together, you might want to fill them both with an oxalic acid solution and let them sit overnight and flush them out with water in the AM.

 

[ejnichol]

Thanks guys. I lightly sanded the riser/manifold and got good flat mating surface for the gasket to seat up.

Glad that hose is ok for a while. Had to do the steering actuator r/r twice in the last season. Working between the motor and transom is not my idea of fun, but its doable.

I removed the gimble ring and pivot housing due to pretty bad corrosion on the pivot housing. Has been this way for a while & 3 weeks in the salt didn't help.

I think the wrong anodes for years, zinc(fresh H20) and maybe poor finishing at factory led to this. I switched to alum before this trip and they at least look like they gave their best effort whereas zinc's seemed to be loafing.

I just ordered some magnesium ones for the fresh.
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