717 exhaust qeustion from the new guy

[swilli42]

hello all,
I looking for some advice on finding a replacement pipe for my 96 spx. I have been having a hard time finding a replacement so I have what might be a dumb question to you guys... the stock pipe that came off my ski has large rectangular holes for the cooling system, whereas every 720 pipe i find for replacement has much smaller circular holes. Will that be a problem? (i will put some pics up tomorrow to better show what I am describing)
And now for the super newb question, will a 657 pipe work?
thanks for any help I can get!

 

[Dr Honda]

A 720 pipe should work with a 657... but post a pic of what you are talking about.

 

[Bills86e]

Look for a casting number on the tuned pipe 274000301 or 274000302. Wire out the fitting connctions
and tap a screw driver into the center of the four "freeze plug" to check for rotting and Tig weld if they
are.

 

[Minnetonka4me]

Do you have leaking freeze plugs? You can get them repaired by a local welder.

If you need a pipe I have many for sale.

 

[swilli42]

I finally got off work and took a few pictures so you can see what I am talking about.
http://i806.photobucket.com/albums/yy342/swilli42/DSC_0111-1.jpg
http://i806.photobucket.com/albums/yy342/swilli42/DSC_0112.jpg
http://i806.photobucket.com/albums/yy342/swilli42/DSC_0105.jpg
http://i806.photobucket.com/albums/yy342/swilli42/DSC_0107-2.jpg

 

[Dr Honda]

That's the old style pipe. I probably have one at my shop that would sell. (cheap)

 

[swilli42]

Well can I use the newer style pipe to replace it? what similar year exhaust are interchangeable with this pipe?

 

[manolocross]

Dude that pipe is done! Dont even put that back on your ski!!!

 

[swilli42]

I know the pipe is beat! thats why Im looking for a replacement.... here's the real question, what is the difference in the 650, 657 and 720 head pipe? I know the casting number for my year is 274000301 and 274000302, but I can not find a used pipe with those numbers...What I can find is part number 274000094. The pipes look the same, but have different numbers. Are these pipes interchangeable?

 

[Bills86e]

I have a used 274000301 tuned pipe it has a pinhole leak. I could weld and sell $85 + 15 shipped to
your door, lmk.

 

[Minnetonka4me]

The numbers mean nothing...seadoo changed part numbers all the time.

The only difference between all the pipes from 580-720 was the location where the pipe bolts onto the side of the manifold. The non tuned pipes hole is 1/4" off from where the tuned one mounts.

some of the 657x and 720s had the pipe that split like the 787, and that one is just a clearance issue on some hulls. All the mounting points are the same.