Coffman manifold f/ 1994 Kawasaki 750

[Captain Coop]

Im new to this forum as well as the stand up ski world. Looking for a manifold only for a 750.

 

[kevbo]

The Coffmans 750 manifold had 4 bolts, most aftermarket wet pipes used 3 bolt 650 manifolds.

 

[Captain Coop]

Thanks for the help. So I have a Coffman 650 manifold?

 

[kevbo]

Was that the version with a one piece chamber? If so, it needs to fit perfectly and all hardware must be tight.

 

[Captain Coop]

I will take some more pictures tonight if I can

 

[WFO Speedracer]

Someone with a Tig could fix that right up

 

[Captain Coop]

I was wondering if that could be fixed. Didn't know if I should get into that in the WTB thread. I'm going to take the manifold to a performance machine shop tomorrow and see what they say. I figured if I could buy one it would just be easier. Here's some more pics.

 

[WFO Speedracer]

Seadoos were bad about breaking off exhaust studs on the 587, 657 and early 720 engines, my tig guy would just cut the whole corner off with a saw and rebuild the corner then drill and tap the hole, worked like a charm.

I rebuilt one corner of a APE 720 pipe on a customer ski with a spool gun when I worked at the welding shop a few years back , that worked fine as well the spool gun defiantly would be much faster.

 

[Captain Coop]

Awesome. I will jerk that thing off tomorrow then and get it to a machine shop. Thanks again for the help.

 

[kevbo]

Coffmans ruined all their watercraft pipes when they tried to stay profitable in a declining market. Their original designs were much more durable.

 

[WFO Speedracer]

Coffmans ruined all their watercraft pipes when they tried to stay profitable in a declining market. Their original designs were much more durable.

Yep I am running a couple of the old Coffman sizzler pipes, they were excellent pipes for sure.

 

[d-ski]

If I remember correctly, the OEM sx,sxi sxi pro and sxr manifold will work. You just have to port match to the pipe opening.

 

[TheBuzzard]

Yea I think that's one of the few coffman pipes that the stock 750 800 manifold works.

 

[WFO Speedracer]

I have a bunch of 750 manifolds laying around if you think one of them will work for you.