Cleaning and repairing a boat heat exchanger
Вставка
- Опубліковано 7 лис 2020
- 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/...
If you are enjoying this channel, please consider making a donation to www.paypal.me/dangarstu or become a Patreon of Dangar Marine at / dangarmarine
T-shirts and other merchandise available at teespring.com/stores/dangar-m...
Common items used in these videos are available from my Amazon store at www.amazon.com/shop/dangarmarine
Dangar Marine is proudly sponsored by MarineEngine.com. MarineEngine.com supplies a wide variety of spare parts for many brands of outboard motors. If you are in the US, be sure to check out their online store www.marineengine.com/
All music available at soundscloud.com/dangarstu - Розваги
I love the bum vice to hold the exchanger when you undo bolts.
Was gonna say the same thing.. lol 😆
Bum vice combined with the rally handbrake turn. ;)
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.
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. ;)
"Nothing is as permanent as a temporary repair". Old Russian Proverb.
If it ends up working well enough to be permanent that would be a definite win!
Reminds me of my younger days, crawling around in the bilge of a wooden boat fixing engines.
When you mentioned 'a big flathead' I immediately thought of deep fried beer batter chips and thousand island sauce.
Have good and safe trip!
Thank you! Will do!
Gladly sit through 1/2 hour of labor to see your chickens. Thanks for sharing.
Very clear and realistic down to earth video incliding tv and working in the lounge....
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.....
Love the ubiquitous stubby of coopers
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!
Awesome! Thank you!
Enjoy the break Stu, cheers 👍
Looking good on the Heat exchanger fix, Best to you all on your holiday, Jeff in LA USA
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.
Thanks Earl. :)
Thats a quality bodge. These epoxies really are a game changer these days. Great vid as always mate
That putty looks like its good stuff. Fantastic work!
Thank you! Cheers!
Epoxying on the lounge rug without a drop cloth - that's Danger Marine!
Enjoy the time off man, you've earned it a couple times over. We''ll all be here when ye get back.
Thanks mate!
Learning a lot from you. I once repaired an outboard using JB Weld.
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.
Thanks mate, they make me smile too. :)
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 !
Thanks Mark, you certainly got your moneys worth! Hope to catch up for a fish before the year gets away from us.
Rifle cleaning kit good for cleaning the exchanger
Good "quick and dirty" repair Stu!!
Thanks mate.
Enjoy your vacation and great job on the exchanger!!!!
Thank you! Will do!
Wow, pretty impressive given what you started with. Can't wait to see if it works.
Enjoy your holiday!
Thanks, I'm keen to see how it goes too.
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.
I've always had great success using Devcon too, great stuff!
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!!
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.
I have to have the beer to solve the problems too. Love the show Stu.
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!
Glad you enjoyed it! Devcon certain is great stuff.
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.
Love the mechanic's juice they are sipping on =)
Good job. Love to see it running.
Guess you'll be doing the other one soon, just in case.
Yep, get this one running and then do the other so there is always at least one engine usable.
Where I worked they used some type of Devcon on aluminum casting that leaked oil because of porosity. Worked great.
That devcon is amazing stuff - I've used the titanium devcon for fixing a bunch of stuff, even a cylinder head.
Sure is.
Great job Stu. Can't wait to see how long the 'temporary' fix lasts.
I'll be interested too. I'm sure we'll still be planning to fix it up properly in 10 years time. ;)
@@DangarMarine nothing more permanent than a temporary fix.
Well it will only be on there until it doesn't work anymore.
Very Good Job, Stu! Looks like that is going to do the job.
Hope so!
I hope Coopers sponsors you, Stu. You are indeed a loyal customer!
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!
Thanks mate, I'm looking forward to getting back and working more on that video.
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 :)
She just rolls her eyes. :)
@@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 :)
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.
Interesting to hear about the coolant filter. Make sense to have something like that.
Wow. Its amazing what you can do with the epoxy .
Sure is!
Teasing us with those big fishing reels. Let's see some action!
Soon! :)
I see a Sammy Hitzkie collaboration coming
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
Thats a good looking fix, I'd buy it new on eBay! Always a pleasure to see all the different adventures and boats.
Thanks Phillip, hope you are doing well. Still need to make that boat together!
“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!
Glad you enjoyed it
Love these videos always good knowledge shared.
Thanks for watching!
3,000 RPM Stu, 30.9 KW. Great video, nice work!
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.
Thanks mate. It's a amazing how long repairs like on your exhaust elbow can last.
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,,😉
That's a very spiffy looking repair.
Great work guys very impressive love the vox too
Glad you like it!
Got claustrophobic watching you remove that exchanger.
Great fix Stu, if i lived on a tiny island with a boat moored nearby, i would think i am on holiday permanently.
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.
Enjoy your holiday fella .Thanks for the content. 😁
Thanks!
I once refilled a magnetic compass with a huge bubble in it, with Vaseline hair tonic in 1982. Still working today.
Nice job Stu, looks good hope the pressure test goes ok, have a good break m8 .
Thanks 👍
@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. :-)
Glad you enjoyed it
Nice lizard and lovely birds - Daffy looking good😀
Thanks 👍
Great video without even watching it
Legend!
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.
It is amazing stuff. As long as it bonds well to the parent metal it can last a suprisingly long time.
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.
Good tip, they give you a nice straight surface.
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.
It is amazing stuff so long as you can get it to adhere to the base metal.
Great stuff!!
Thanks!
Nice job!
Thanks!
We have to wait for the real stars at the end of the video!!!!! Thanks!
Another coppers rebuild 👍stu 🍻🍻
Oh yeah!
Stu, there is a Yamaha motorcycle yellow like that called middle chrome! Nice and bright!
Thanks for sharing, great viewing.
Thanks for the info!
have fun on holiday mate.
Thank you!
GREAT JOB
Nice one "Danger" Stu ;)
I so want to tidy that workshop !
Thank you
You're welcome
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! :-)
Thanks Chris!
my kind of boat repair beer in one hand wrench in the other..
Stu’s Dangar safety boots
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
Regular maintenance goes a long way Tim!
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
It is amazing how long this stuff lasts.
...GOOD ONE, GREAT INFO. STAY SAFE...
Thanks, you too!
brilliant!
That chicken loves you, she follows your every word. Sweet creatures.
She is a lot of fun to hang out with. :)
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.
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!
"Barnicle buster" works great on cleaning out those tubes.
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.
@@jaquigreenlees yes CLR is available in Australia.
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
Rydlyme marine does too
Boat isn't going offshore, only in the river and has two engines.
Enjoy the break mate, I hope you still have the sunnies for Sleazy...they are gold. Ingat kuya
Sleezy is the natural habitat for those sunnies. ;)
Now we all know Stu your going to do some video recording on your vacation. Can't wait to see those videos....
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.
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
love your vids
Thanks mate.
Gee’s Stu, log in started watching and suddenly just a beer on the boat table, thought you has vanished in the bundaberg triangle
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.
Good tip, will definitely do that next time.
Enjoy your break Stu, the world will be just the same upon your return.
Thanks mate!
Love the Zoolander reference. Blue Steel Nice
Thanks. :)
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.
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.
Stu
1st have a great holiday
2nd loved it when the chicken took care of the food thief.
Thanks mate!
@@DangarMarine
Oh on a side note, my Girlfriend just named new hatchling fuzzy foot chic Daisy. 🤔😁🐓🐓🐓🐓🐓🐔🐔
"seem slightly less dodgy than we actually are!" The story of my life!!!
17:50 awesome 👌, needs to be in your intro.
The fix 👌
Job well done Stu hope it works mate cheers shaneo
Thanks Shane.
See this all the time...anodes never get replaced.
There aren't any anodes on a vetus. At least not one I've found on mine. I have the same corroded heat exchanger with only 250 hours on the engine.
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
The acetic acid in vinegar can do a good job for sure.
@@DangarMarine yer, but it leave's your bag of chip's tasting like crap!
I use a wet stone also.