Hello,
I have a 1981 Searay Seville. 305 (228 MIE) engine. I recently replaced the external gimbal housing because I broke the old one trying to remove the lower steering pin. I replaced it with a used housing. It appeared that this was the same as the unit I removed as it had the offset bolt pattern for the y-pipe. My old y pipe is the 3 piece with the flappers in the bottom (wonderful design!) and has 5 bolt holes. The newer unit has offset pattern but only 4 holes. I learned thanks to the forums that this is because it is a newer design (1983 I believe). So I found and ordered a compatible y pipe (with the flappers on top!).
My question is, I have not installed this yet but comparing it to my old y-pipe it looks as though the ends of the pipes that hook up to the riser tube are a few inches further forward than the old. The engine is not in yet as I am doing some cleaning/painting. The manifolds I have are the older log style with the elbow riser at the rear. I am assuming that this manifold will not work with this newer y-pipe. Do I need to replace the manifolds with a center riser or will this somehow work?
BTW about 10 years back, I acquired a project boat, knowing nothing about boats (I knew engines). rotted deck/stringers/engine issues. Thanks to this forum mainly and some You Tube videos, I have learned enough to do everything I need to know about my boat. Dave
I have a 1981 Searay Seville. 305 (228 MIE) engine. I recently replaced the external gimbal housing because I broke the old one trying to remove the lower steering pin. I replaced it with a used housing. It appeared that this was the same as the unit I removed as it had the offset bolt pattern for the y-pipe. My old y pipe is the 3 piece with the flappers in the bottom (wonderful design!) and has 5 bolt holes. The newer unit has offset pattern but only 4 holes. I learned thanks to the forums that this is because it is a newer design (1983 I believe). So I found and ordered a compatible y pipe (with the flappers on top!).
My question is, I have not installed this yet but comparing it to my old y-pipe it looks as though the ends of the pipes that hook up to the riser tube are a few inches further forward than the old. The engine is not in yet as I am doing some cleaning/painting. The manifolds I have are the older log style with the elbow riser at the rear. I am assuming that this manifold will not work with this newer y-pipe. Do I need to replace the manifolds with a center riser or will this somehow work?
BTW about 10 years back, I acquired a project boat, knowing nothing about boats (I knew engines). rotted deck/stringers/engine issues. Thanks to this forum mainly and some You Tube videos, I have learned enough to do everything I need to know about my boat. Dave
