Alpha Gen II Prop Ventilation?

[vzett]

Noticed for the 1st time today that when flushing, I am getting some water flowing out between the front of the prop and the back of the lower unit. The last two trips I also seemed to have a lot more exhaust bubbles against the transom at idle than normal. I recently started having an random RPM fluctuation problem under way which I was attempting to troubleshoot via the engine side (4.3L LHX), but am wondering if this is related to the water/exhaust blow-by. <br /><br />I've owned the boat since April, and haven't pulled the prop (I tried, but it didn't come free easily so I've been hunting around for someone with a puller). <br /><br />What should I be looking for? <br /><br />Thanks,<br />virgil

 

[tommays]

Re: Alpha Gen II Prop Ventilation?

i am a littel confused normaly most of the water comes out of the two small holes on the transom and the exaust comes out of the prop with a small amount of water when your running on the muffs<br /><br />i am not sure what you mean by the front of the prop??<br /><br />tommays

 

[vzett]

Re: Alpha Gen II Prop Ventilation?

Since owning the boat, I've always gotten about the same amount of water from the transom vents and the prop - at least when flushing. <br /><br />By front of the prop, I mean at the joint between the prop and the outdrive where the outer-diameter of the prop tapers to fit inside the lip of the lower-unit.

 

[Doug Durako]

Re: Alpha Gen II Prop Ventilation?

If the prop gets air (ventilates) while you are underway, you must either trim in or turn the wheel to have it "catch" water again. Your rpms will rev really high in this instance, not just a couple hundred rotations.<br /><br />Does the rpm fluctuation happen only at high loads---or do you get it just idling? You need to get that prop off and try another one---you may have a spun hub---which will cut loose at first only at heavy loads/higher rpms.