Cleaning and repairing a boat heat exchanger

Рет қаралды 113,778

3 жыл бұрын

Boat heat exchangers are similar to car radiators, only raw water from the river, lake or ocean you are boating in is used to cool the coolant pumped through the engine instead of air. With the exception of keel cooling, this raw water will cause corrosion and blockages in the small tubes that coolant passes over which means that they require regular maintenance to keep them working properly. In Pete's Halvorsen 36 the heat exchanges are in serious need of replacing, but we have a go at cleaning and repairing them to get one last season out of them. This involves removing the heat exchangers, giving them a quick soak in acid, using some Devcon F epoxy putty to repair the housing and then sanding and painting.
Epoxy putty used: www.amazon.com/dp/B00065TNAW/...
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Пікірлер: 457

@mashrien 3 жыл бұрын

Stu's the kind of dude I'd call broke down in the middle of the ocean.. Guaranteed I'd be driving myself home shortly after. I mean it may be a flaming wreck /when/ I get home, but he's gettin' me home. And he just costs a pack of coopers. Best kind of bloke to know.

@DangarMarine 3 жыл бұрын

There is nothing more heroic that arriving at your home port in a flaming wreck and stepping off onto the wharf as someone hands you a beer. ;)

@PhotogNT 3 жыл бұрын

I love the bum vice to hold the exchanger when you undo bolts.

@djmjr77 3 жыл бұрын

Was gonna say the same thing.. lol 😆

@DangarMarine 3 жыл бұрын

Bum vice combined with the rally handbrake turn. ;)

@whotknots 3 жыл бұрын

When you mentioned 'a big flathead' I immediately thought of deep fried beer batter chips and thousand island sauce.

@bloodyeyeful 3 жыл бұрын

Gladly sit through 1/2 hour of labor to see your chickens. Thanks for sharing.

@billmoran3812 3 жыл бұрын

Reminds me of my younger days, crawling around in the bilge of a wooden boat fixing engines.

@chrismccartney8668 2 жыл бұрын

Very clear and realistic down to earth video incliding tv and working in the lounge....

@redlock4004 3 жыл бұрын

"Nothing is as permanent as a temporary repair". Old Russian Proverb.

@DangarMarine 3 жыл бұрын

If it ends up working well enough to be permanent that would be a definite win!

@user-ym9wb2mk5e 3 жыл бұрын

Glad to see your channel is still going strong!!!! Haven’t watched any content since my boat projects have been on hold this year. Cheers mate, from Texas, appreciate all your vids and knowledge sharing!

@DangarMarine 3 жыл бұрын

Awesome! Thank you!

@markolav70 3 жыл бұрын

Great vid Stu and nice fix.. I had a "temporary filling"once that lasted from 1984 to 1993...that's what I call value for money. Have a great trip mate...enjoy !

@DangarMarine 3 жыл бұрын

Thanks Mark, you certainly got your moneys worth! Hope to catch up for a fish before the year gets away from us.

@andykent5569 3 жыл бұрын

Enjoy the break Stu, cheers 👍

@ImnotChuck. 3 жыл бұрын

A hundred years ago when I was 7 years old, I went to the movies every Saturday and watched a cowboy or soldier flick or two, and then came my favorite part...the cartoon. That's the way I feel about the chicks' bit at the end of your videos. Daffy and Daisy always make me smile. Thanks.

@DangarMarine 3 жыл бұрын

Thanks mate, they make me smile too. :)

@keithsmith4236 3 жыл бұрын

Thats a quality bodge. These epoxies really are a game changer these days. Great vid as always mate

@bikemessenger7 3 жыл бұрын

man each time I see a part in that condition I think "oh man, thats trash now!" but you just dive in and fix it up. amazing. have a great vacation.

@DangarMarine 3 жыл бұрын

Thanks Earl. :)

@JeffinLowerAlabama 3 жыл бұрын

Looking good on the Heat exchanger fix, Best to you all on your holiday, Jeff in LA USA

@djmjr77 3 жыл бұрын

Awesome job!! Way to make due with what you have. Those epoxies and things like JB weld can fix more things than people would dare to. I fixed a cracked water jacket in a head with JB weld, held up perfectly fine an no need to remove/ replace .. Have a great holiday!!

@DangarMarine 3 жыл бұрын

People don't seem to understand just how strong a lot of these modern metal epoxies are. If you can get them to bond well to the base metal you are in good shape.

@mashrien 3 жыл бұрын

Enjoy the time off man, you've earned it a couple times over. We''ll all be here when ye get back.

@DangarMarine 3 жыл бұрын

Thanks mate!

@RoadhogRNA 3 жыл бұрын

Enjoy your vacation and great job on the exchanger!!!!

@DangarMarine 3 жыл бұрын

Thank you! Will do!

@flick22601 3 жыл бұрын

It's been awhile since I used it but the DEVCON epoxy putties have always worked great for me. Their technical support people are extremely knowledgeable and have given me a lot of tips to make the jobs easier and better over the years.

@DangarMarine 3 жыл бұрын

I've always had great success using Devcon too, great stuff!

@robertdegraaf5215 3 жыл бұрын

I have to have the beer to solve the problems too. Love the show Stu.

@KingGraver 3 жыл бұрын

I've got twin 671's in my boat. They were installed new in 1945 and are running great! Currently have less than 2,000 hours but the meter may have been reset after a major overhaul in the 80's.

@scale2tail 3 жыл бұрын

That putty looks like its good stuff. Fantastic work!

@DangarMarine 3 жыл бұрын

Thank you! Cheers!

@jackpatteeuw9244 3 жыл бұрын

Where I worked they used some type of Devcon on aluminum casting that leaked oil because of porosity. Worked great.

@JohnnyRizon 3 жыл бұрын

A Little taste of home for me in this Video, Devcon Headquarters is in my town here in Danvers, MA. - You're the best Stu--- Keep on truckin and thanks for all the great videos to help us poor boys running!

@DangarMarine 3 жыл бұрын

Glad you enjoyed it! Devcon certain is great stuff.

@adam56usa 3 жыл бұрын

Learning a lot from you. I once repaired an outboard using JB Weld.

@lemmy9996 3 жыл бұрын

Good "quick and dirty" repair Stu!!

@DangarMarine 3 жыл бұрын

Thanks mate.

@iain1969 3 жыл бұрын

Great job Stu. Can't wait to see how long the 'temporary' fix lasts.

@DangarMarine 3 жыл бұрын

I'll be interested too. I'm sure we'll still be planning to fix it up properly in 10 years time. ;)

@Fibs4Tibs 3 жыл бұрын

@@DangarMarine nothing more permanent than a temporary fix.

@codylapoint 3 жыл бұрын

Well it will only be on there until it doesn't work anymore.

@desolatemetro 3 жыл бұрын

Wow, pretty impressive given what you started with. Can't wait to see if it works. Enjoy your holiday!

@DangarMarine 3 жыл бұрын

Thanks, I'm keen to see how it goes too.

@sidvak9700 3 жыл бұрын

Epoxying on the lounge rug without a drop cloth - that's Danger Marine!

@ckm-mkc 3 жыл бұрын

That devcon is amazing stuff - I've used the titanium devcon for fixing a bunch of stuff, even a cylinder head.

@DangarMarine 3 жыл бұрын

Sure is.

@Dan_C604 3 жыл бұрын

“Ahh good looking boat” :)) That was a great episode Stu. I enjoyed it very much. Looking forward to see how it works out. Enjoy your holidays!

@DangarMarine 3 жыл бұрын

Glad you enjoyed it

@omieyouknowme 3 жыл бұрын

Great video. I've had to clean tubes to, one trick I learned. Use one of those cheap engine pressure washers thru your air line. The venturi tip sucks in fluid. You can force cleaning solution thru passages rather well. For on road diesel trucks we have coolant filters, with or without sca additives, would a filter help him out in the long run. It's amazing the crap they catch, and I just replace the filter every other year. It's help my radiator and pump last oh going in 20 years.

@DangarMarine 3 жыл бұрын

Interesting to hear about the coolant filter. Make sense to have something like that.

@KitLaughlin Жыл бұрын

I hope Coopers sponsors you, Stu. You are indeed a loyal customer!

@manuelcastro6737 3 жыл бұрын

Very Good Job, Stu! Looks like that is going to do the job.

@DangarMarine 3 жыл бұрын

Hope so!

@ApprenticeGM 3 жыл бұрын

You're in fine form Stu! "Could have gone longer and stronger . . . " "That's the Ghostbusters 'slimed me' stuff" "I gave it the Blue Steel look . . . " good video & repair too, but top class entertainment. Looking forward to your upcoming docco on a WWII sea mission!

@DangarMarine 3 жыл бұрын

Thanks mate, I'm looking forward to getting back and working more on that video.

@lightingautomationelectric3314 3 жыл бұрын

Stu I use a rifle cleaning brush on my VP heat exchanger found .22 brush is perfect size. Brush is brass/bronze type material and pushing rod is fibreglass with brass joiners. You need to push brush all the way though before pulling out

@kevgermany 3 жыл бұрын

Good job. Love to see it running. Guess you'll be doing the other one soon, just in case.

@DangarMarine 3 жыл бұрын

Yep, get this one running and then do the other so there is always at least one engine usable.

@steveshoemaker6347 3 жыл бұрын

That Devcon F epoxy putty is good stuff....Over it was called Marine Tex....l have used it A BUNCH OF TIMES IN THE PAST....Thanks mate...Your friend in Kentucky.....

@wmac3306 3 жыл бұрын

I'm really impressed by your innovative repair. Hope it holds. Way better than shelling out a ton of cash for a new one. Years ago I did a "temporary" repair on my Ford Lehman's cast iron exhaust elbow using plastic steel & then went long distance cruising for a couple of years without a hint of a problem.

@DangarMarine 3 жыл бұрын

Thanks mate. It's a amazing how long repairs like on your exhaust elbow can last.

@dizzywilliams3557 Жыл бұрын

Not a 'ton' of cash for new vetus $800 clams for new housing and O rings and gaskets(+exhaust) I went new! I only got 1 motor,,😉

@Royden58 2 жыл бұрын

I once refilled a magnetic compass with a huge bubble in it, with Vaseline hair tonic in 1982. Still working today.

@Badgermatt-nc5nr 3 жыл бұрын

Hey Stu, have fun on vacation! A little trick I have always used on flat surfaces like those is to use a flat file like a mill or bastard file. Hold it flat and use it to make a nice mating surface.

@DangarMarine 3 жыл бұрын

Good tip, they give you a nice straight surface.

@mattpalmer5890 3 жыл бұрын

I was thinking Vicki's obviously not at home or even in the same state because Stu's got the heat exchanger sitting on the carpet in the loungeroom ..... and then I notice the top of Vicki's head in the background! You are a very lucky man mate :)

@DangarMarine 3 жыл бұрын

She just rolls her eyes. :)

@mattpalmer5890 3 жыл бұрын

@@DangarMarine I got in trouble when I left a genset on the deck..... admittedly it was for 3 years and not my deck .... but still :)

@lpd1snipe 3 жыл бұрын

I first used Devcon about 30 years ago when I was still working in the Marine industry. If you can't weld it, or braze it and you're in a pinch, it'll do the job.

@DangarMarine 3 жыл бұрын

It is amazing stuff so long as you can get it to adhere to the base metal.

@Harrybollox 2 жыл бұрын

Love the ubiquitous stubby of coopers

@lefty940 3 жыл бұрын

Great work guys very impressive love the vox too

@DangarMarine 3 жыл бұрын

Glad you like it!

@spinaway 3 жыл бұрын

Great fix Stu, if i lived on a tiny island with a boat moored nearby, i would think i am on holiday permanently.

@DangarMarine 3 жыл бұрын

Thanks mate. It is a nice place to live, it's true but getting away is the only way to not look at all the work that needs doing.

@AlisonFort 3 жыл бұрын

Nice lizard and lovely birds - Daffy looking good😀

@DangarMarine 3 жыл бұрын

Thanks 👍

@pslny 3 жыл бұрын

3,000 RPM Stu, 30.9 KW. Great video, nice work!

@mjodr 3 жыл бұрын

Love the mechanic's juice they are sipping on =)

@strasbertos 3 жыл бұрын

Teasing us with those big fishing reels. Let's see some action!

@DangarMarine 3 жыл бұрын

Soon! :)

@russseff1246 3 жыл бұрын

I see a Sammy Hitzkie collaboration coming

@samwhite9894 3 жыл бұрын

Rifle cleaning kit good for cleaning the exchanger

@scharftalicous 3 жыл бұрын

Thats a good looking fix, I'd buy it new on eBay! Always a pleasure to see all the different adventures and boats.

@DangarMarine 3 жыл бұрын

Thanks Phillip, hope you are doing well. Still need to make that boat together!

@jerryf609 3 жыл бұрын

Wow. Its amazing what you can do with the epoxy .

@DangarMarine 3 жыл бұрын

Sure is!

@ericfranklin2064 3 жыл бұрын

Have good and safe trip!

@DangarMarine 3 жыл бұрын

Thank you! Will do!

@fachu2 3 жыл бұрын

Good old Devcon, that stuff is great. sets so hard its machinable. I used it on a Yamaha V6 cylinder head, then drilled it and taped it to hold the water jacket cover on. Then a bit of paint to make a Job what it ain't.

@DangarMarine 3 жыл бұрын

It is amazing stuff. As long as it bonds well to the parent metal it can last a suprisingly long time.

@MrKb1959 3 жыл бұрын

Enjoy your holiday fella .Thanks for the content. 😁

@DangarMarine 3 жыл бұрын

Thanks!

@lvlndco 3 жыл бұрын

That's a very spiffy looking repair.

@TheNockingPoint 3 жыл бұрын

@3:05 Stu your delivery is amazing. Love the subtle humor that you put into your videos. Well, it's subtle compared to American humor. :-)

@DangarMarine 3 жыл бұрын

Glad you enjoyed it

@loganadler0 3 жыл бұрын

Love these videos always good knowledge shared.

@DangarMarine 3 жыл бұрын

Thanks for watching!

@JOHNJONES-qo3fh 3 жыл бұрын

Nice job Stu, looks good hope the pressure test goes ok, have a good break m8 .

@DangarMarine 3 жыл бұрын

Thanks 👍

@zetacon4 3 жыл бұрын

Nice job!

@DangarMarine 3 жыл бұрын

Thanks!

@tonysargent1699 3 жыл бұрын

Stu, there is a Yamaha motorcycle yellow like that called middle chrome! Nice and bright! Thanks for sharing, great viewing.

@DangarMarine 3 жыл бұрын

Thanks for the info!

@michaellindon5688 3 жыл бұрын

Great stuff!!

@DangarMarine 3 жыл бұрын

Thanks!

@chrisskelhorn5727 3 жыл бұрын

Excellent video Stu! Learning lots of stuff that I'll never get around to doing, like Kluk Fu Fighting, lizard rescue, and the like! :-) I hope you both have a great holiday! :-)

@DangarMarine 3 жыл бұрын

Thanks Chris!

@dermotevans206 3 жыл бұрын

I so want to tidy that workshop !

@miguelfatman6066 3 жыл бұрын

Gee’s Stu, log in started watching and suddenly just a beer on the boat table, thought you has vanished in the bundaberg triangle

@anthonywall5227 3 жыл бұрын

Thank you

@DangarMarine 3 жыл бұрын

You're welcome

@TimsWorkshopTJY 3 жыл бұрын

Hi Stu, I had one boat years ago that had a heat exchanger on it. Every year as part of my winterizing I drained and clean it. It was a 470 mercruiser inbd/outbd. Allot of torque on low end but not much for top speed. 35 approx. Cabin cruiser with a nice cuddy and head with door. Little sink with white gas stove. Tried to boil water for cooking a crab and gave up. Haha

@DangarMarine 3 жыл бұрын

Regular maintenance goes a long way Tim!

@stuartkeegan2291 3 жыл бұрын

I've had similar issues with a heat exchanger on my old Vetus M4.14. Mine was leaking between raw and cooling water, and also out of the end bonnets, so the core *had* to come out. I removed the bonnets and bolts, screwed in some threaded rod until it bottomed out and then used a car jack to press against the threaded rod and force the core out. Done with the heat exchanger still in the boat of course. Once the heat exchanger was out, the core rods were silver soldered back to the end caps, the heat exchanger was built up using aluminium welding and then linished down to size. 2 years later and no issues. Surprisingly it wasn't hideously expensive, I found a local boiler maker skilled rebuilding old boilers to do the work. If it happened again though, I think I'd take your approach to building it back up with epoxy. Although I really do think it's worth getting the core out if you can - mine had a diverter on its sleeve which ad come loose and needed tacking back into place, and also, although the heat exchanger core tubes were clear, the voids between them were packed with silt, so raw water wasn't able to effectively flow past the tubes, limiting the cooling capacity.

@DangarMarine 3 жыл бұрын

Since work on getting the core out in the boat. It's weird to have silt between the tubes as that is the coolant side, the raw water flows through the tubes, but I guess if there was a leak the raw water was getting into the header tank. Glad you got it fixed for a good price!

@donaldsayers4967 3 жыл бұрын

I have always used heat to sweat oil, moisture and impurities out of castings before using Devcon as the thermal reaction from the 2pack makes the metal sweat and causes pockets under the coating. As you are heating it you can see the material dry out.

@DangarMarine 3 жыл бұрын

Good tip, will definitely do that next time.

@darrylmcleman6456 3 жыл бұрын

I did a similar thing with a product called JBWeld on a 9.9 outboard to build up the thermostat housing and as far as I know it is still holding after 8 yrs. Cheers from Canada

@DangarMarine 3 жыл бұрын

It is amazing how long this stuff lasts.

@kltpep 3 жыл бұрын

Now we all know Stu your going to do some video recording on your vacation. Can't wait to see those videos....

@adl2005 3 жыл бұрын

GREAT JOB

@rodneymiddleton9624 3 жыл бұрын

We have to wait for the real stars at the end of the video!!!!! Thanks!

@jays2002 3 жыл бұрын

Nice one "Danger" Stu ;)

@OFCbigduke613 3 жыл бұрын

I love this channel but man your workshop gives my OCD a jolt. Might be time for a general clean up. Good times. Be safe Stu.

@johncorderoy4437 3 жыл бұрын

We have yanmar engines on our centre pivots for irrigation and they still are going after 20000 hours, only thing that’s been replaced has been the alternator

@argtv1007 3 жыл бұрын

brilliant!

@wrav47 3 жыл бұрын

my kind of boat repair beer in one hand wrench in the other..

@retiredfederalie178 3 жыл бұрын

I have similar setups on my Hino EH700 diesels. They called them “manicoolers”. Mine are cast aluminum and don’t like galvanic corrosion or rather they do and you have to protect them as best you ca.

@bobjoncas2814 3 жыл бұрын

...GOOD ONE, GREAT INFO. STAY SAFE...

@DangarMarine 3 жыл бұрын

Thanks, you too!

@Royden58 2 жыл бұрын

Stu’s Dangar safety boots

@209turtleboy 3 жыл бұрын

"Barnicle buster" works great on cleaning out those tubes.

@jaquigreenlees 3 жыл бұрын

CLR as well. Not sure if it's available in Aus though. Calcium, Lime, Rust remover that is safe for copper ( you can pour it at 100% through copper pipes with no damage ) It dissolves calcium and lime deposits and removes rust stains.

@dimitrikuburlis9277 3 жыл бұрын

@@jaquigreenlees yes CLR is available in Australia.

@fulltimber 3 жыл бұрын

Come on Pete , just spring for a new one . You would hate that you’re way of shore in a storm when in let’s go

@soflo_justin934 3 жыл бұрын

Rydlyme marine does too

@DangarMarine 3 жыл бұрын

Boat isn't going offshore, only in the river and has two engines.

@rodneylee4026 3 жыл бұрын

That chicken loves you, she follows your every word. Sweet creatures.

@DangarMarine 3 жыл бұрын

She is a lot of fun to hang out with. :)

@michaelmcclure8673 3 жыл бұрын

Stu 1st have a great holiday 2nd loved it when the chicken took care of the food thief.

@DangarMarine 3 жыл бұрын

Thanks mate!

@michaelmcclure8673 3 жыл бұрын

@@DangarMarine Oh on a side note, my Girlfriend just named new hatchling fuzzy foot chic Daisy. 🤔😁🐓🐓🐓🐓🐓🐔🐔

@michaellacey7303 3 жыл бұрын

have fun on holiday mate.

@DangarMarine 3 жыл бұрын

Thank you!

@iantyler4045 3 жыл бұрын

Got claustrophobic watching you remove that exchanger.

@TheBuckthat 3 жыл бұрын

Reminds me of what we tried with our tamd 40s, nothing worked at full revs, probably ok if your just putting around and not in outside waters.

@graves3919 3 жыл бұрын

Stu, I used to use vinegar to clean out the copper heat exchangers in My Trawler. Turned the calcium to Blue vinegar. Rinsed it and was good to go. DON"T know what it did to the copper but it wasn't much

@DangarMarine 3 жыл бұрын

The acetic acid in vinegar can do a good job for sure.

@michaelthorpe9560 3 жыл бұрын

@@DangarMarine yer, but it leave's your bag of chip's tasting like crap!

@shanedavies9564 3 жыл бұрын

Job well done Stu hope it works mate cheers shaneo

@DangarMarine 3 жыл бұрын

Thanks Shane.

@zechthompson7688 3 жыл бұрын

Great video without even watching it

@DangarMarine 3 жыл бұрын

Legend!

@gilesbowdery1914 3 жыл бұрын

Stu, had a very similar issue with my 3 cylinder Vetus but not a bad. Always wondered why these engines have no anode fitted!

@DangarMarine 3 жыл бұрын

I'm suprised there is no anode too.

@robertyork784 3 жыл бұрын

love your vids

@DangarMarine 3 жыл бұрын

Thanks mate.

@gavinb9627 3 жыл бұрын

Enjoy your break Stu, the world will be just the same upon your return.

@DangarMarine 3 жыл бұрын

Thanks mate!

@timaustin110 3 жыл бұрын

The fix 👌

@realnutteruk1 3 жыл бұрын

"seem slightly less dodgy than we actually are!" The story of my life!!!

@randallsnyder1003 3 жыл бұрын

Love the Zoolander reference. Blue Steel Nice

@DangarMarine 3 жыл бұрын

Thanks. :)

@rogerdeves1511 3 жыл бұрын

Enjoy the break mate, I hope you still have the sunnies for Sleazy...they are gold. Ingat kuya

@DangarMarine 3 жыл бұрын

Sleezy is the natural habitat for those sunnies. ;)

@paintnamer6403 3 жыл бұрын

Those rudder control rods need cleaned and inspected. Some lumber, fish plates and lashings for back up reinforcement. And nice video!

@DangarMarine 3 жыл бұрын

Steering definitely need to be 100%

@alfakrab6134 2 жыл бұрын

17:50 awesome 👌, needs to be in your intro.

@jaybdvm 3 жыл бұрын

What you referred to a drain plug - could be a sacrificial "pencil" zinc which had eroded away. I had one on my gas engine heat exchanger.

@johngiam 3 жыл бұрын

At 13.41 he did remove the plug and clarified it was a drain plug, not a pencil anode. Anyway, isnt this a exhaust manifold heat exchanger,? Meaning the seawater circuit is in the 2 pass tube stack while the exterior is flooded with coolant? If it is the case, shouldnt any form of anode be on the lid cover on both ends of the tubestack?

@randyhilton6629 3 жыл бұрын

@@johngiam I have a 4.15 Vetus, there are no anodes for the HE. I believe Beta is the same, but not entirely sure.

@johngiam 3 жыл бұрын

@@randyhilton6629 oh, so its the anode plug without the pencil anode?

@randyhilton6629 3 жыл бұрын

@@johngiam I thing the bolt he took out is used for installing a lifting ring. It shows in their parts book. Looks like the drain plug is on the exhaust side and the lifting ring would be on the other side. I wish I could find a service manual book.

@randyhilton6629 3 жыл бұрын

@@johngiam These HEs are designed with no anodes.