Tall riser conversion

[mklearl]

I had a 1998 Volvo penta 5.0gipbycce. I replaced that with a gm 5.7 but all the exhaust system is the same including manifolds, risers, y pipe, etc. I'm thinking of going to the taller risers as recommended but I'm having a hard time understanding the bulletin explaining exactly what I need. I dont think that the taller risers will fit because the angle from the risers to the y pipe isn't 90 degrees so if I go up 3 inches it won't line up. Does anyone have any experience in this and can you give me additional parts that may be needed including part numbers? Best I can figure is that in addition to the risers I may have to replace the y pipe and/or the elbow coming off the risers to get it to line up. As far as the bulletin it states that configurations are also based on the outdrive. I have a DP-sm outdrive.
Thanks in advance.

 

[alldodge]

From the looks of the design, it appears that after installing the longer riser, you just need a longer item 20 hose. I'm not seeing the part number for a longer hose, but I have bought exhaust hose and cut to fit



https://www.marinepartseurope.com/en/volvo-penta-explodedview-7744410-25-9744.aspx

 

[Horigan]

... I don't think that the taller risers will fit because the angle from the risers to the y pipe isn't 90 degrees so if I go up 3 inches it won't line up...

From the drawings it looks like the taller riser has a shorter outlet so the elbows will still line up. Just need a longer exhaust hose in between.

 

[mklearl]

I planned on the longer exhaust hose... if it were a 90 degree angle between the 2 the hose would be 3 inches longer. My concern is more how it will align... weather they shortened the outlet, changed the angle or both. I cant seem to find the answer.

 

[mklearl]

From the drawings it looks like the taller riser has a shorter outlet so the elbows will still line up. Just need a longer exhaust hose in between.

Shorter outlet or #10 needs to be shorter as well. I'm just looking for something a little more definite so I dont have to deal with shipping and returning risers that wont work. Thanks for the input.

 

[alldodge]

Sorry couldn't be of more help, but think the local VP dealer would be able to answer the question

 

[mklearl]

No worries. I appreciate the input I got. Thanks again.

 

[mklearl]

I like to follow up in case anyone else questions it. I decided to order the tall risers and pray that they lined up. They did. Just needed to get a longer piece of exhaust hose. Thanks for the help!