How To Repair A Marine Engine With A Cracked Block

Рет қаралды 86,931

david lindsay

5 жыл бұрын

Пікірлер: 88

@Blesedman 3 жыл бұрын

David, thank you for taking the time to do this video. Excellent and straight forward explanation. Your video could potentially save me a lot of money. Thanks again, Ron

@jasonguertin2733 Жыл бұрын

Z😢um 😮😮 k f if😮u ggiu

@randylafleur2201 2 жыл бұрын

Ingenius!! You are a very smart man! I would have never thought about using a radiator to make a closed-loop cooling system. Bravo

@davidlongo3983 3 ай бұрын

😊

@brsolutions2 4 жыл бұрын

Great video, thank you. Lot's of nice tips. And tricks.

@superwolf28 2 жыл бұрын

Awesome video, thanks. I wanted to add that if your dipstick tube runs off the drain plug, it’s possible it’s deceiving you. My oil looked perfect the only way I knew it had water in it was because the oil level went up. Of course I didn’t know I had a problem until I washed out my bearings and spun a few of them.

@SuperLoko47 4 жыл бұрын

I used bar’s and this method worked for me thanks for the video

@davidlindsay6588 5 жыл бұрын

Just an update. My repair is still holding. The manufacturer said when it works it's almost always permanent, but if the crack is too wide the leak stop may not be able to seal the crack. One more thing. You need to first determine if the crack is into one of the combustion cylinders. Mine was not, but if yours is, all you need to do is remove that spark plug while running the engine with the leak stop in the cooling system. The manufacturer says it can seal a cracked cylinder but to allow it to seep into the crack you can't have the cylinder pressurized.

@mrzif0013 4 жыл бұрын

i gave the boat to a new owner w/ the knowledge and ability to take the risk of dealing w/ the engine core plugs. i was heading to install a new engine or at least pull the engine to get new core plugs in the right way.. good luck.......

@perryshields8820 Жыл бұрын

David, how do you determine if the crack is in one of the combustion cylinders?

@michaelstarr5861 Жыл бұрын

@@perryshields8820I'm about to do the same to my 4.3 block in a cuddy cruiser that I just got for a song. I'm going to test compression on each cylinder, and I don't think a cracked cylinder will show much compression on the guage. Plus, cylinder cracks are more rare than other ones

@scottpense1020 Жыл бұрын

I have this exact problem on the same exact boat..lol you may have just saved me 5k for new long block. will attempt this over next few weekend.. intimidating for me but you laid out video very well

@kalaganne Жыл бұрын

Any feedback on how it went on your side ?

@serge470 11 ай бұрын

Yep, he just brought new engine 😅

@thisisyourcaptainspeaking2259 4 жыл бұрын

Good to hear it's still working fine, exceptional in fact. These blocks will crack if not winterized b/c the water trapped in the cooling jackets will freeze during cold weather, expand and crack the cast iron.

@anthonymoschella859 5 жыл бұрын

I had a cracked 3.0 Merc. Crack appeared to be internal as I had no exterior leakage and oil was getting milky. Last weekend I constructed a tank of about 8 gallons to allow my cooling water to recirc and used a whole bottle of K&N block sealer, ran for about 15-20 minutes and it appeared to have sealed the crack. Boat hadn't run in 12 years to the accuracy of my temp gage was questionable, but it never got over 185 F or so. I could put my hand in the tank quickly without burning myself so I would guess the temp was less than boiling or 212 F. I ran the engine again this week for about 15 min on the muffs and oil looked good after. Super pleased obviously.

@garydavidson02 5 жыл бұрын

Anthony Moschella is it still holding up on your 3.0?

@anthonymoschella859 5 жыл бұрын

@@garydavidson02 unfortunately I have not been able to get it out on the water. Steering cable is frozen in the pivot tube.

@mrmoparrr 5 жыл бұрын

Did you mean K & W ?

@anthonymoschella859 5 жыл бұрын

Yes. The green bottle. my bad

@EricVirtueable 4 жыл бұрын

Wondering why this guy didn't just do that, you could just stick prop in bucket out of gear that is full enough to submerge where muffs go and gather with another bucket from pee hole and dump it in first bucket and sit there recycling it.

@L2fish 3 жыл бұрын

I had a 5.7 Chevy engine with a bad intake manifold gasket that had the same issue at 65,000 miles. Dealer said they wouldn't know until they tore it down. A friend told me that these were famous for the intake gaskets failing and causing this. I put 150,000 miles on that truck after that with no more issues.

@coryspicoli454 4 жыл бұрын

This was bad ass

@bruceszymanski3665 Жыл бұрын

David, Any thoughts on using K&W FiberLock vice the product you used?

@johncharbonneau4689 Жыл бұрын

Good job

@jamonit1020 2 жыл бұрын

Do you think this system would work to seal a head gasket on 5.7 Volvo Penta?

@nicknack86 2 жыл бұрын

What would you say you spent in all parts for your fix?

@buckscountyautospa6008 11 ай бұрын

Do you think this would work on a Mercruiser 3.0 with an external crack in the water jacket. No water in the oil.

@viocom52 5 жыл бұрын

Nice video. Tank you.. just on my thermostat I have 3 lines (Mercruiser Alpha 4.3 2003) 2 lines from manifolds, large pipe from the pump. Where can I find output water line which. Will be connected to the top of Radiator ? Will appreciate your answer

@fredsimek1682 3 жыл бұрын

Did you get the flow for the 4.3 mercruiser?

@johnpowers253 3 жыл бұрын

Nice presentation and appreciate your methodology. You're a fellow son of Rube Goldberg! How many hours do you estimate you have put on the boat since the repair? Must ask, were you paid for your product plug? 4/11/21

@justinc8638 5 жыл бұрын

How did it work im really hoping it did because im going to try this. Thanks for the info man.

@josepeixoto3384 3 жыл бұрын

It usually works very well,provided you *fixed* very well the original overheating problem; it is nothing special,just sodium silicate,also called liquid glass

@1957kwick 4 жыл бұрын

We need an update is it still holding let us know thanks man good info

@davidlindsay6588 3 жыл бұрын

still holding. Runs better than ever after a valve adjustment

@michaelstarr5861 Жыл бұрын

Sub'd. Thanks, bought a boat with 4.3 only has 600 hours, but it has chocolate milk. Now I feel better, gonna follow your method tomorrow

@frdm5774 Жыл бұрын

How’d it go for you?

@EdgeStripKits 2 жыл бұрын

David, do you have an update on this? Did it actually work and LAST?

@nathangen Жыл бұрын

He did comment 1 year later that it was still holding.

@MrJakexxxx 7 ай бұрын

GREAT presentation!! I will certainly save this video. . One thing I don't understand. Where is the water going that you have plumbed into the system coming up from the lower unit impeller. Seems like it would be over pressurizing the system. . I will continue watching for your reply. . . Jake

@aidanzollner5101 5 ай бұрын

It dumps out the exhaust

@arctyler 4 жыл бұрын

Does it have to be used with a radiator or would 15 gallons of water or so covering the outdrive work as well? 3 cans would treat 18 gallons of water, the only thing I can think of is not enough pressure but what is your opinion?

@davidlindsay6588 3 жыл бұрын

You can do it that way. However that brings the stop-leak into the exhaust manifold heat risers. I wanted to contain the stop leak within the engine. It is also difficult on my boat to collect all of the water coming out because some of it comes through the exhaust and some at the transom

@chancewilson7123 3 жыл бұрын

Did you ever try it your way?

@justinc8638 5 жыл бұрын

Hey any updates on how it worked out please? Anything different u would have done? Im doing this tomorrow so any.info would greatly help. Thanks

@davidlindsay6588 3 жыл бұрын

As long as I believed it was an internal crack I'd do it the same way. However, if you have a crack in a cylinder you must leave that spark plug out.

@michaelrdaggett5717 Жыл бұрын

What if the block is cracked on the outside right between the freeze plug behind the motor mount and the freeze plug behind it?

@stephenschlee4803 3 жыл бұрын

Do you think this would work on a non internal leak? Mines cracked beside the freeze plug. No water and oil and no misfires

@alilGoat 2 жыл бұрын

If it's not internal just JB weld the outside.

@michaelrdaggett5717 Жыл бұрын

Have you seen JB weld work? Just curious I also have a crack near my freeze plugs.

@michaelstarr5861 Жыл бұрын

What grinds my gears is they should have built the cooling systems to automatically drain most of the water out completely overnight after shutting it off.

@bruceszymanski3665 Жыл бұрын

David, why were you concerned about running the treated water through the exhaust risers? I was going to try and do this without the radiator and just collect the treated water using 2 hoses plugged into the transom raw water outlets into a tub with the lower outdrive submerged. TIA

@frdm5774 Жыл бұрын

Hey. Did you attempt this method? If so, was it successful? In the same boat per se.

@bruceszymanski3665 Жыл бұрын

@@frdm5774 it did not work. The crack in the valley of my 5.7l was huge. I replaced the motor.

@frdm5774 Жыл бұрын

Thanks for writing. Ultimately I know it doesn’t always work. I’m hoping for a summer and then re power. I’m not getting a lot of water in my oil. Very little actually, but that’s not under strain. Still I think it’s worth a shot. Line up for 4.3 Mercs here.

@adamchappell7972 2 жыл бұрын

Did you start with fresh oil when you put the block seal in?

@digitalnomaddude 26 күн бұрын

probably, because the oil would have had water in it if the block was cracked

@mid-misage3416 5 жыл бұрын

What coolant flush did you use to flush the engine? Any updates on the effectiveness of the block sealer?

@davidlindsay6588 3 жыл бұрын

I don't remember the cleaner, I thought I said it in the video, maybe not. I do remember getting a more aggressive one.

@donmunro144 3 жыл бұрын

In my opinion this is poke and hope. I use a process made for this. It's a series of threaded plugs that interlock permanently sealing the crack. Its a much better repair. Made by a company called lock-n-stitch.

@strikeforcek9149 3 жыл бұрын

Lock and stitch works great, IF you already have the engine out and stripped down. This is for guys that just want a quick fix (hopefully fix) while the engine is still in the boat.

@donmunro144 3 жыл бұрын

@@strikeforcek9149 I pulled mine out. But I could have easily done it in the boat as well. I've only got the 3.0 merc. A v engine would have been a different story.

@strikeforcek9149 3 жыл бұрын

@@donmunro144 I'm debating doing the same right now. I have a 5.0/305 that is literally brand new with only around 15hrs on it, and it cracked over winter (bad winterization). So debating on using lock n stitch, or just replacing the short block. Such a pain in the ass, all from someone taking shortcuts lol. But, I got into the boat for the right price, so I can't really conplain I guess.

@donmunro144 3 жыл бұрын

@@strikeforcek9149 oh that sucks.

@nathangen Жыл бұрын

I think with lock-n-stitch you also have to be able to find the crack and have serious access to its location. I have an crack that is accessible and I’m looking at lock-n-stitch and belzona solutions, but have to consider that there may be other cracks I can’t see and this solution could prove quite useful for that.

@cristaylor5311 5 жыл бұрын

So did this repair work? The real test in on the water with stress on the engine. Love to hear from you David Lindsay.

@anthonymoschella859 5 жыл бұрын

Still haven't taking it out unfortunately.

@davidlindsay6588 3 жыл бұрын

yes, still running good

@justinc8638 5 жыл бұрын

Ill be using your technique but with blue devil

@frdm5774 Жыл бұрын

And how did it turn out?

@asstastic2323 3 жыл бұрын

Why didn't you just put a gm thermostat housing and thermostat and electric fan on radiator?

@davidlindsay6588 3 жыл бұрын

I did use a fan at first, it did not provide enough cooling so I had to use water

@mrzif0013 4 жыл бұрын

where is the up date? i fear the worst has happened... i got caught by this early freeze and found a core plug in the bilge. i gave up my winterizing day for my wifes borthers son weding i haven't seen in 25yrs...... i am hoping it is just the plug but is there is a internal crackin the block i wo't risk going on the open water of the great lakes. outside crack maybe i would do a repair internal crack no way. re power w/ an outboard/s.

@tomtrevessey3620 4 жыл бұрын

Hi mr Zif001, I have a crack on the outside and iv'e just epoxy metal weld a plate of steal over the crack. not sure if i have a internal leak too, milky oil...

@davidlindsay6588 3 жыл бұрын

I have done that too with a crack that was only external

@gm1937 4 ай бұрын

After watching the video for 34 minutes, I decided to buy a new engine instead

@gosttunter 2 ай бұрын

Me too. It's only 7k. But at least I won't do the ole Pistol Shot on the Terrace ARRGH. What size Tee is that? The night hose fits on it and the 2 smaller also fit. But the Tee looks like it the same size on all 3 sides. Geesh .. confused

@RockHard-xr6zz 29 күн бұрын

Why don't you want to try this

@2010mcard Жыл бұрын

Im marine tech i fix blocks and wat u did is not right i bet under load ur motor wit water it will turn milky the right fix is open it up and see wat broke and fix

@nathangen Жыл бұрын

Seems like it did work. As a marine tech what recommendations do you have after your open it up and determine the source of the crack?