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Davidb
10-06-2008, 12:25 AM
So my boat took on quite a bit of water in a short amount of time when I put it in last weekend. I had a little time Saturday morning to mess with it and I found that at least some of the leaking is coming from the driveshaft guide. What can I use to seal this? I am talking about the tube that the shaft goes through under the boat, it has four bolts in the bilge area, behind where the driveshaft goes out. When I get a chance I need to check for more leaks, because I doubt this let that much water in. Rubrails, exhaust ports, etc. I found this one by using a water hose in the bilge while it was on the trailer. Any ideas on how else to find leaks? I plan on pulling the engine cover, back seat, and the removable piece of floor, then taking it on the water and watching for leaks.

cbryan70
10-06-2008, 12:35 AM
Have you tightend your packing lately? That would be on the driveshaft

Davidb
10-06-2008, 12:53 AM
Bear with me, I am completely new to this whole inboard thing. Isn't the packing the wax (or some material like that) "rope" (how it was described to me) that seals the driveshaft? If this is what it is, the guy I bought it from said he just replaced it recently.

NeilM
10-06-2008, 02:09 AM
yep, that's what packing is. And, it should drip, a bit - the water is what lubricates and cools the packing. A drop every 30 seconds to a minute while the boat is in the water and in gear at idle is normal.
If you have more than that, look elsewhere. Here are some places to look:

- between the hull and the deck, under the rubrail
- water hose connections. Are all hose clamps in place and tight, are all hoses intact? What about the seawater intake? is it secure?
- gasket on the raw water pump
- leak in the exhaust or muffler
- leak between the exhaust and the hull
- heater core or shower (if you have an aftermarket one installed)
- ballast bags, if you have them

That's about it.. there really isn't anywhere else for water to come in

TMCNo1
10-06-2008, 07:30 AM
Shaft log.stuffing box tightening and replacing packing, http://easttxskier.com/stuffingbox.html and http://www.mastercraft.com/teamtalk/showpost.php?p=503319&postcount=52

mark g
10-06-2008, 02:02 PM
(the guy I bought it from said he just replaced it recently)

sounds like it could be the culprit to me i would recheck it to make sure

TMCNo1
10-06-2008, 02:21 PM
Bear with me, I am completely new to this whole inboard thing. Isn't the packing the wax (or some material like that) "rope" (how it was described to me) that seals the driveshaft? If this is what it is, the guy I bought it from said he just replaced it recently.

If the packing has recently been replaced, if in fact it was, the packing will compact after a few trips, and the stuffing box/shaft log needs to be retighted up to slow down the dripping, as previously posted. It's all just part of regular maintenance on these DD and V-Drive inboards without a Dripless Shaft Seal, like here, http://www.ojprops.com/products/shaft_seals and here, http://www.skidim.com/products.asp?dept=1032, but you can always retro fit one to your boat if you wish.

Davidb
10-06-2008, 05:15 PM
Thanks for the replies. I will check the packing and see if it needs to be retightened. Hopefully that will solve it. If not, I guess I will be following that checklist, Neil. :). As to that leak in the brace for the driveshaft, what kind of sealant can I use on the bilge side?