jtryon

missed this one, great job with the router!

@waveryder you could try one of these:

i used that Vetus hose for my exhaust conversion and it's definitely more flexible than a typical reinforced exhaust hose.  here's a pic of what centurion is replacing the original hoses that came with their stinger exhaust, because those originals didn't hold up well:

I can't find this one online but perhaps the Vetus hose would work for you.

@ryguy1188 check the project parts list here:

i got my HDPE from US Plastics, Item # 46466 (3/4" x 12" x 24" Black Seaboard® UV Stabilized HDPE Sheet) because they were the cheapest at the time.  keep in mind you'll need 2 of this size, and if you order a sheet double the size it may cost more in shipping which is why i went with the 12x24".  then you just need someone to cut the template for you, or you can DIY.

i'd also suggest making sure your hinges are flush-mount so that when the hinge is cycling the mount is the only thing mating against the hull, if that makes sense.  mine aren't flush-mount as i didn't know there were different styles, so my hinge pushes against the hull and there's a slight gap on the mating surface.  it's still been fine that way for 3 years but worth mentioning if you're starting from scratch.

simple, love it.

nice clean box for all the electronics!

looks great!

man that looks complicated 😄

great job, seems like you came out way ahead on the 5k investment!

@CUCVin the pics above, which pics are from which setup?

someone finally tried it!  and the dog approves in one of the first pics

from past research and referencing your second test, those tabs might have to retract more to ensure they're not dirtying the lip on the non-surf side.  i bet if you raise your platform a couple inches AND retract the tabs all the way up, it will look much better.

that's great!  also interested in the parts you sourced to get this done.

shoutout to @cowwboy, i googled this to see if i could add a fill port to a bag i'm getting and this thread came up first.  glad this is a doable project!

great idea!

interesting design on that with the lips turned up.  for what it's worth, if you're surfing with that boat you may need the "up" position to be slightly higher.  i've noticed on my centurion that for surfing and wakeboarding, the wave is definitely better with the stock trim tab all the way up.

this is the size that a lot of MB and other boats use, based off the measurements of multiple surfgates across different malibu models.  i used 3/4" HDPE and it's plenty strong.

with mine, the issue was the drag of the water on the downpipe, so a horizontal pull.  once i secured the exhaust better horizontally with screws to the exhaust outlets i had no issues.  it looks like you have rivets securing the pipes to your outlets, so that should be effective; if you give a good tug on both of those without the vertical support do they feel really secure?  otherwise, all that vertical support will do is rotate in an upward arc as the exhaust comes off.  if you put one more pin through the vertical support at the top though, that will keep it from being able to rotate outward, if that makes sense?

nice, have you had it on the water yet?  i had issues the first couple times around with not having horizontal support and only vertical support.  vertically it still allows a little movement and my hoses popped off on a hard throttle up in the water.

looks amazing!

what was the approximate cost to have these made?

good to know, thanks justin.

good call--i'm likely having the downpipe welded on rather than using a rubber hose to join it to the exhaust tip for extra reinforcement, so through bolts will make it stronger.  i'll also add another support either to the trim tab actuator mounting location or to the platform mounts.

21 hours ago, N901 said:

I have the sideswipe exhaust though. Have to cut through the hull

https://www.wakegarage.com/projects-archive/exhaust-modifications/centurion-sideswipe-conversion-r269/

On 9/25/2020 at 12:05 PM, wet2ward said:

Thanks, does it matter if I use PVC or ABS?

i used ABS because IMO black looks better, but either should work.  the temperature properties of both are similar enough.

everything was at Home Depot/Lowe’s 

nice work!  you will have no issues with the heat, even when running it on the trailer for winterization/summerization.