Removing old exhaust tips
 

Ok, I know it sounds easy...however in a attempt to remove them, they would not budge. These tips are the aluminum bell type. After removing the nuts and washers and just a little persuasion with a 2X6 and hammer they still would not move. I am guessing they are original and silcon adhesived in place. I am worried about gelcoat damage if I apply any more hammer persuasion. Any suggestions.

paul

i had the same issue once before and i just kept beating (around entire bell) and they came out. your right about the silicone holding them but it didn't hurt the gelcoat when they finally gave loose. hope you have same results and good luck ;)

there was s thread a few days ago about solvents to melt silicone glues, maybe that would help. I don't know if they would damage the gelcote or not though.

Try small wood wedges between the flange and the hull driven in a little at a time to break the grip of the sealer. Wedges might be available at hardware or Home Depot for installing/shimming door/window frames.

If they have been installed with something like 3M's 5200 adhesive (and many are), you will need to get them HOT. Can your boatbuilder/previous owner tell you what they used?

Great ideas guys! The boat is an 84 Baja Sport. There is evidence of silcon around the outside edge of the tip. What do mean by hot. Heat gun? How about using a propane torch on the INSIDE of the tip conducting the heat through the tip to soften the silcon. I like the wood wedge idea and probably will try that with some heat. Any more ideas out there?

Paul

I used a block of wood and a 3 lb sledge/hammer to get mine out. It did damage my Gelcoat. I ended up getting the area around the exhaust holes re gelcoated. That really sucked, considering there was nothing wrong with the old ones, I just wanted a different style. I have a Baja 24 outlaw and I'm not sure what sealer was used.

I did the same thing at the end of last season on a '92 Baja. I used a thin putty knife with all the edges dulled so it wouldn't scratch the gel. Worked great, just took some time working all around the flange. Once you get all around the flange use a twisting motion to loosen it up and pull it out. My $.02

Yup KC baja has it. I started with a razor blade then utility knife blade then putty knife with side edge sharpened. Took awhile but easier than replacing the chunks of gelcoat that might come out with it if you dont.

Thanks for the input guys. I WILL NOT for sure bang on the tips with a hammer. Gel coat work can get expensive. Putty knife, wood wedges,a little heat and alot of patience I think is the answer.

Paul

Heres another idea for ya pb, Go to home Depot or what ever hardware store is close by and buy some piano wire in a super thin gauge. You can slip it in between the tip and the transome and work around the edges cutting and working your way through the silicone. Should work out good! :D

Putty knife and a straight screw driver and twist if you take your time it works with no damage

The little cheap disposable razor knifes. The are about 1/4" tall and 4-5" long when extended. The kind that have the segments that break off to keep a sharp tip. They bend along way before the segments break. If you are careful you can hold the blade flat against the hull bend it a little with pressure and slice right around the pipe give it a tap and and it will pop right out. Works great but not for the faint of heart.

Shoot, the piano wire idea is a good one. I have to give it a try next time. Thanks Wally.

Sometimes the piano wire trick works good with deck hatches too if you can snake it through. Its like takeing the windshield out of a car then! :D :D

Take a razor knife and scribe around the outside of it and that should keep your gel coat in tackt.

Jon

Hey Wally,
Nice idea. I will for sure get these things off. Now I need to replace them. Anyone have a line on 4" stainless steel slanted tips w/ internal flappers.

Paul

Paul check your mail. :)

-Wally

if you have acess from inside the boat,use wooden blocks and a bottle jack to slowly press the tips out.As you pump the jack,ease a blade into the stretched sealer and cut them free.Works sweet evey time.

Ditto KC Baja, I used the same technique on my 90 Baja...worked great!