dose it hurt the jet to run engine on the hose ?

[Chinewalker]

I put in another engine and need to run it for a while but dont want to hurt the pump one more thing the ujoints are at a pretty big angle engine high pump low  mounts have never been changed would it have been set up this way? it sure looks like alot of stress  :smile21:

 

[vdrivegrimes]

best thing to do is disconnect the pump, if not pull the inspection cover and pull the water hose down there, just dont let the impeller eat it lol

 

[jdeaton]

Your not allowed more than 3 degrees angle on your HBar (Driveshaft) Sometimes you lower the back all the way down and have to jack up the front.  Not bring the angle to the proper alignment will result in wearing out universal joints prematurely and could result it extensive damage.  Also do not allow the driveshaft be perfectly aligned, you need some wobble for lubrication.

 

[spd500]

3 degrees seems kinda small . I have run ALOT more than that on 4x4 trucks without problems . Not sure what the max would be though .

 

[jdeaton]

If he is running a standard Hbar the 3 degrees is correct.  I'm not sure what you can get away with, with a driveshaft.  Call Tom at Performance or George at ARS Marine, they rig boats for a living and both say the same thing.

 

[blazeracer]

For a 4x4 chugging along at 1,500 rpms more degree is not as much an issue as a jet boat spinning at 6,500 always under full power.

 

[TintMan]

If he is running a standard Hbar the 3 degrees is correct.  I'm not sure what you can get away with, with a driveshaft.  Call Tom at Performance or George at ARS Marine, they rig boats for a living and both say the same thing.

x2...or you'll chance ruining your pump and motor! :smile30:

 

[Devilman]

You say run it for "awhile", if it was gonna be for more than say a minute or two, I'd try & disconnect the driveline if at all possible. You can stick a hose in the inspection cover & maybe one up the nozzle, which will be better than running it dry, but with driveline disconnected you would be 100% safe.

Far as the driveline angle, 2-3 degrees angle is about all I've been told you want. Got a pic of yours? Sounds like mine, engine is higher than the pump, but the angle itself is fine. This is a pic of mine.

 

[spd500]

I wouldn't think the length of the drive shaft would matter as far as angle goes , but the higher RPM of the boat motor would probably make it more sensitive to an improper angle . I have never really checked into what the angle should be .

 

[Becket]

The shaft MUST have "some" angle/offset or the bearings will not roll around in the caps and will fail quickly, so, if you change the angle you have now, be sure not to line it up perfect.

 

[Chinewalker]

You say run it for "awhile", if it was gonna be for more than say a minute or two, I'd try & disconnect the driveline if at all possible. You can stick a hose in the inspection cover & maybe one up the nozzle, which will be better than running it dry, but with driveline disconnected you would be 100% safe.

Far as the driveline angle, 2-3 degrees angle is about all I've been told you want. Got a pic of yours? Sounds like mine, engine is higher than the pump, but the angle itself is fine. This is a pic of mine.

Mine looks like that and it is offset to one side it just looks like a lot the mounts and stringers have never been changed so I guess it's right just need some water to go drive it in

 

[Chinewalker]

I just disconnected it and ran it got timing all set no leaks and sounds good would be in the market for a new set of pipes