Changing the exhaust on a 454
#14
Registered
Gold Member
Platinum Member
Join Date: Sep 2003
Location: Bishop,CA
Posts: 382
Likes: 0
Received 0 Likes
on
0 Posts
My boat has through transom exhaust and the Y pipes are still in place. The y pipes have rubber caps like you would get at the hardware store for blocking off plumbing pipe. 4 inch cap and hose clamps. When the engines come out, I'll remove the y pipes.
#15
Registered
i removed thru prop and went thru transom on a chris scorpion, roughly the same as the elite of yours. only diff was the noise. now instead of screaming SLOW DOWN!!! at me she digs her fingernails into my arm...but yeah the perko plumbing caps work. you might need to cut a little off the top of the y's to make room for exh hoses to go out the back. not much though. the top of the y is close to the waterline. you don't want that cap underwater all the time. best is to pull motor and buy real block-off plate. be careful pulling bolts out of bottom of y. they break off into the transom assy. unpleasant!!