Cutting off angled tips, any Suggestions??
 

I keep losing the internal shutters in my exhaust thru hulls. So, I am going to cut off the angled tips (while on the boat, hopefully).
and add external flappers. Has anyone ever done this? Best tool to use to cut the stainless pipe? I have recip saws, grinders, etc, so what would be best???? Your suggestions please!!:)

I don't know that I would do that. It would be very tough to cut. Grinding could do it, but it wouldn't look very good. Stainless tends to work-harden as the saw cuts. I am replacing my temporary tips to some others I just had some work done on. These tips are just short, straight with flappers in and out. The service shop where I bought my boat just gave them to me, there were many just lying around from customers that changed styles, etc... I was just using them while debugging to make sure I didn't have any back pressure until, I could get the baffles out of my corsa tips. They looked better on my boat, but couldn't use muffled tips anymore. You are welcome to these if they will work for you. [email protected]

I think that you are about to make a major mistake. You should do this the right way by pulling the tips off. A sawz-all isn't the right tool because it cannot make a clean straight cut. Plus starting them is a *****. A grinder with a cut-off wheel isn't the right tool either because it'll blue the metal. I suppose a portable band saw would work, but how do you make your cut straight & square?

Pull the tips off and clamp them into a band saw. You'll proably have to make up a wood block to clamp it in. If you have a sharp fine blade and feed it slowly you'll only have to do a little dress up to remove the burrs.

pull them off and put them in a lathe????

You could cut them with a sawzall with a carbide blade. Clean up the ends with a die grinder and then throw on a set of the Shotgun silencers as they slip over the tip and would hide your cut job.

I just did this last week. Pull them off and put them on a band saw. Had to block it up and put a level on it to make sure i was cutting them at a perfect angle. Went through it like butter. Cleaned the ends up with the wire wheel, and turned out perfect. Don't try and cut them in the boat.......:p

The lathe idea is intriging...had not thougt of that one! The carbide blade is good also.....but I think I need some justification for more of the tools in my home shop, so band saw will probably get the job. Brad, very generous offer, & I may take you up on it!
Thanks guys.:D

Awwwwe thats just great!!!!
 

I just installed those angled tips with the internal shutters and your telling me they are a chronic problem. Anybody else having problems with this style exhaust tip. I purchased mine from Eddie Marine.

I agree with the masses. Remove before cutting.

Paul

I would put them on a lathe....if you have access to one. It will give you a clean, flat edge that's true to the rest of the part.

Good luck.....they need angled flappers :D

I will remove them. I am going to use Brad's pair as a temp'y fix until I can replace both sides with new tips. Dang, those things are high when you start replacing them 4 at a time! Oh, the pleasure of twins!;)

Just did mine. From 45 degree to straight cut tip. I think the straight cut looks better but that is personal preference. Cut them in a horitizonal band saw first and then dress them in a lathe if you need to to square the ends. Stainless steel tubing is not perfectly round alot of times and if you try parting it off in a lathe the tool will break through one side before the other dig in and jerk the tip out of the lathe or a the very least jerk a chunk out of your beautiful tip. Flying parts are also very dangerous to the lathe operator.

Here's one way!!
 

I just did it to install Drew Marine Shotgun Silencer Tips. I used a Milwaukee Portable Band Saw . It was a piece of cake! I cut them without removing them from the transom.

The only problem is it does NOT leave a nice finished edge and requires that you put somethin over them such as flappers or silencers.

Also, if you need to have a nice 90 degree cut, make a template out of steel tubing to put over your tips. Then the blade can be made to follow the guide. I tried using PVC tube, but the saw just cut right into it. If cut them straight enough you may be able to clean up the edges and finish polish them.

Good luck! :)

Take them off & use a chop saw with a 14" wheel. They will come out perfect without a scratch.

Bo

jbrauer took the words right out of my mouth. I borrowed a Milwaukee portable band saw to cut off the angle to install Drew Marine shotgun silencers. Having the tips on the boat was no problem. I taped the cutoff edge, and carefully started the cut. The saw went through the stainless steel almost as fast as if I was cutting wood. I carefully ground and polished up the cut edge in case I took the silencers off in the future.

Good luck with whatever you decide to do!

pb, I put on a set of angled tips with the internal flapper from Eddie Marine last year,about month after splashing I was washing the boat and noticed the flappers were gone. I asked a couple of people who had them and got the same answer, they do fall out. Good luck

jagrlg24,
If I would have known that I would have packed them suckers back up and sent them back for the straight tips and external flappers. Oh well. I will have to keep and eye on them. I was looking at them last night and could see how they would fail. The welds on the rod probably cannot take all the vibration from the exhaust on the shutter and breaks. No wonder why they sell replacements.:rolleyes: Live and learn.

Paul

NO NO NO NO NO
this is crazy
Go to NAPA or other auto parts store
Get a chain exhaust pipe cutter for 15 bucks
it has like can opener or pipe cutter wheels all the way around
Wrap the chain with the cutter wheels around the pipe, connect chain to handle on both ends of chain
turn handle to tighten chain
start rocking back and forth do that for a few strokes and turn handle a bit more and keep rocking
Will cut through it like butter and not have any nicks, scratches, burrs nothing

Take em off and use a band saw is the only other way you will get a clean cut

Leave em on the boat is what you want to do, then this is your tool

I want angled tips with the metal flapper inside and i have the rubber flapped flat tips on mine now and I want to heave them
Im sure these are a dime a dozen
Jason

why not just buy the set that I have in the garage :)

pb, I don't know where mine broke, there is no trail. The flapper the rod holding the flapper, all gone. My boat is kind of small and when I would idle you could hear the flapper bouncing inside the tip, that does sound different. On the upside they look fantastic.

Are these the rubber flappers you guys are talking about,,, I hear about those burning out all the time.

I bought the steel flapper style, I have had them in for 4 years with 500 hours on them, no issues, I keep them clean, and they still shine like new.

I have a set of almost new and in perfect condition clamshell flappers. There mounted in 4" stainless tubing. Shoot me an email if your interested. Whatever they cost new I'll let em go for half.