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Bearings and the driveshaft itself get pushed out the back of the pump.

Not a really good freestyle option is it? I'm assuming that's what your looking for? I thing the sitdown trim motors are a little too slow. Just my opinion

Love mine!

Here's a pic that I found that im kind of referring to when it comes to milling. Look at the headpipe in this pic and you can see where some material has been taken off. I must say though I don't know how much was milled off or if this will even work.

The problem with the fiberglass is it will be below the bond line. So now you need tubbie sponsons on both sides and your gonna be cutting them up as well. Certainly more than a day project if you want to glass it correctly, sand, prep and paint.

Nuclear you reading everything correctly. Nothing about this is fitment is perfect. You can lose your volumetric efficiency by milling off material or you can lose your exhaust chamber volume by cutting up your pipe to make it fit. The only way to do it without messing with the motor is to...

The 900 pipe is a bit smaller but it still doesn't fit in the sxi hull. I know cause that's what I'm working with. I just cut down my driveshaft to fit the 900 so now I'm gonna be milling off material off the exhaust manifold and maybe some off the exhaust side of the cylinders to hopefully make...

What about decking the cylinder and head. When you had the engine blow up maybe those bolts blew out enough to warp your cylinder??? I don't know just throwing it out there.

this is what a factory pipe screw looks like, the tapered smooth end fits in the inner jacket of the headpipe to seal off water. So I'm betting a normal screw in there would not seal very well if at all. As far as compression 180 is a safe psi to run in a motor to get hp while still being able...

Your head gasket issue and water in the fuel are two separate problems. Use some 3M 1211 gasket sealer on the head and torque down appropriately. As far as the water issue maybe tighten up that fuel cap or check the cap to see if the rubber gasket is still there, or you might be drawing water...

All those aftermarket parts and no high compression head? That's kinda strange. I do know the factory screws have a taper to the to fit in the hole better.

I would guess you could just copy what all the sxr 1100 are running for an impeller and fine tune from there. That should be the easy part as there are way more sxr builds

Anybody else know how much you mill off the exhaust mani?

I have never seen inside a 300 hull but I know a 440 and 550 motor are practically the same. So I would think a 550 would fit with no issues if a 440 fits

If the ski ran fine before the JSS coil work I would focus in on that being the problem

Hey sxi1100 post on the forum a couple more times so I can PM you. I think you need 5 posts or something like that to unlock the PM.

How much do you mill?

Well the pisser on the right hand side is just a drain for your fuel cover area so there really shouldn't be anything comming out that. However I'm not really sure why your having engine trouble.

What ride plate are you using?

Mine is completely down to bare metal. I bought it used but I've had a few Factory pipe chambers and they all seem to cook off their paint.