Volvo Penta exhaust riser

[Blake0192]

Hello I have a 2003 Volvo Penta 3.0 I just put a different motor in my boat bc my motor was locked up. on this new motor I have a black hose off the exhaust riser that I didn’t have on my old motor can I just put a plug in it?

 

[alldodge]

Welcome
Post a pic?

 

[Blake0192]

The black hose

 

[alldodge]

I think that is used for salt away sort of thing. Hey @Scott Danforth what do you think?

 

[Blake0192]

I think that is used for salt away sort of thing. Hey @Scott Danforth what do you think?

Do you think just put a plug in it would be fine

 

[alldodge]

Do you think just put a plug in it would be fine

I think that would be ok, but I asked Scott because he is more up to date with VP stuff

 

[Scott Danforth]

What is the other end connected to?

Salt away is a tee in the raw water line, back to a glorified windshield washer reservoir. Doesn't look like a salt away / neutra salt installation

 

[Blake0192]

What is the other end connected to?

Salt away is a tee in the raw water line, back to a glorified windshield washer reservoir. Doesn't look like a salt away / neutra salt installation

It wasn’t connected to anything I bought the motor from a guy I believe it was connected to the lower unit. I plugged it. Let it run for about 30 minutes. It seem to be doing fine.

 

[dubs283]

Only time I've seen a line like that from the exhaust cooling passage is for a dripless propshaft packing on an inboard/v drive or a hot/cold raw water shower

It'd be best to abate the barb and hose and just plug the hole

 

[Blake0192]

Only time I've seen a line like that from the exhaust cooling passage is for a dripless propshaft packing on an inboard/v drive or a hot/cold raw water shower

It'd be best to abate the barb and hose and just plug the hole

Thank you

 

[ta79pr]

Page 463 of the Volvo Penta service manual shows the 98 model of the 3.0 has a hose to the riser from the thermostat block.

 

[Fun Times]

Page 463 of the Volvo Penta service manual shows the 98 model of the 3.0 has a hose to the riser from the thermostat block.

Yes...Nice find ta79pr, should be item number 16, https://www.volvopenta.com/shop/999222/part-sections/54142860

^, Blake0192 Might want to check if # 28 & 29 is there too just for a reference point.

Also Item 30, https://www.volvopenta.com/shop/999222/part-sections/54160574

 

[ta79pr]

To add to the puzzle, it appears Volvo was making some various configurations for the 3.0 during the 90s. Here is the color cooling diagram, shows a version of the hose from the riser but this time to the exhaust itself.

 

[ta79pr]

And then a version plumbed to the steering cooler (mechanical or power). Good luck, interested as to which is most correct for your application/swap.