Super Jet Alignment too much shims

[Germanrider]

Hello do my pump alignment today on my oem superjet 2003 hull but I still need too much shims for it.
I installed the pump and the driveshaft was too deep no problem.
Aligned it with the cold fusion tool but at the end when it fits perfectly I needed 8mm shims in the back of the pump. Don’t know why but with less than this it’s not aligned perfect.
So do the engine alignment and here I need between 4 and 6mm on each motor Mount. Know it’s a perfect alignment but never hear from somebody who needs do much shims
Could there be any problem with so many shims between the mounts and the engine ?
Don’t find any reason why I need so much but it is not possible to align it with less than that

 

[badvinny]

Needing too many shims in the back means there is too many in the front under the motor, and if you can't correct that then the midshaft is incorrectly placed also.

 

[DylanS]

Ran across a few skis like this, especially older square noses, and so have a bunch of other fellas here.
As long as your aligned I wouldn’t worry about how many shims you use. Just use stainless washers instead or machine a spacer out. Will be cheaper and won’t slip out on you!

 

[Germanrider]

Needing too many shims in the back means there is too many in the front under the motor, and if you can't correct that then the midshaft is incorrectly placed also.

But I start at the back not at the front because I aligned it with the cold fusion tool so that it is perfect aligned
Because of this I also have so many shims under the motor but normally when it’s perfectly aligned in the hull people don’t need so much shims on the motor mounts
I am scared about the function of the mounts because of so much shims but don’t have an other idea how I can change it

 

[WFO Speedracer]

So looking at the cold fusion tool it looks to me like you need to shim the tool - midshaft at the top two holes, a small shim located there will change the driveshaft angle slightly reducing the shims stacks substantially , it sounds to me like your firewall is not quite square with the hull causing you to have too many shims front and rear , the tool is great but it has one large flaw , it is assuming the firewall is exactly 90 degrees from the pump mounting bolts, this may not be the case, try it I think you will like the results

 

[Germanrider]

That’s a really really good point because the shaft is also in the middle of the center holes with less shims but the cold fusion tool does not fit than. Will try to shim it a little bit too use less shims in the the back and still be in the center.

 

[schicks]

Another thing to keep in mind, the nozzle mounting tabs are thinner on some couches, so when your mixing parts, those nozzles can also require more shims. Good way to tell is the mounting ears are squared off versus rounded on some nozzles. Those nozzles require 4mm of shims just to equal a sj nozzle.

 

[Germanrider]

Have a thrust reducing nozzle with trim installed they are smaller than the oem ones
Don’t worry about the shims on the pump only the 6mm on the motor mounts

 

[WFO Speedracer]

If you have a bunch of shims both at the rear of the pump and at the front engine mounts a couple under the midshaft should take care of the issue and get the driveline at a better angle