Unknown hose! Help!

[Tiago]

Dear all,
Bought a 1990 270DA Sundancer. It has twins 4.3 and alpha 1 gen 1 drives (I think). The question is that I don’t know what is this hose coming from the transom to the drive! It is suposed to be sealed with silicone like it is?
Thanks in advance for your help!
Regards,
Tiago

 

[Espos4]

That is the old remote oil reservoir style. It was added to those drives by using a braided hose screwed into the upper drive oil plug.

Look for a clear bottle inside the boat secured with a coil spring type band. It should have gear oil in it.

 

[Tiago]

Thank you very much Espos4! Both hoses are envolved in old silicone where they penetrate the transom...should I just put new one or there is a right way?
Regards.

 

[DWABoat]

Tiago,
Did you get this resolved?
If the installer used silicone for a sealant on a transom, I would definitely change that. There are much better alternatives.

 

[Maggieiscrazy]

Looks to me like he has much bigger issues than silicone on the transom.

 

[Tiago]

Dear all,
Didn’t resolve transom problem yet. Done trim tabs and trim actuators. Drives inspected and installed.
DWABoat could you please let me know the alternatives?
Thank you very much!
Regards.

 

[DWABoat]

Tiago,
Maggie is right, you appear to be working several issues. Sealant is one.

When you get to the resealing point, there are many opinions from some very knowledgeable people on the is forum. I do not claim to be an expert. My personal experience with silicone is that I never use it anywhere that will see the sunlight or get regularly doused with water.

I have used Sika Flex 291 (black is my favorite) multiple times for below waterline use. It seems to be holding well. See photo.

Many have recommended 3M 4200 for above or below waterline. There is a similar 3M (5200 I believe that will make a permanent seal, so be careful to get the right stuff). See photo.

I am sure some people more knowledgeable than I can give advice for this as well. Do your sealing last to make sure you don’t forget something! Don’t ask how I know.

 

[DWABoat]

Oh, I want to add...take your sealing very seriously. I can make the case this is the most important part of the job.
I had to rebuild an entire transom due to failed sealant on a speedometer tube screws. Engine pull, transom assembly out, full deal.
Clean your surfaces very well. Dry them. Select the correct sealant. Apply generously and make sure it sticks everywhere. Do not rush this part of the job or trust it to someone else. Carefully scrutinize your job when done.
That’s just me, though.