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micky

I bought a set for my 315's from HDI marine last year. I had them in 2 days and they are great.

micky

So the fix is being attributed to the heat exchanger, exhaust manifold or both. Been a long road for you, my fingers are crossed this is the last of it and you get to enjoy for a good while. Turbo Exhaust Manifold Heat exchanger Its only $10k to fix a coolant leak. At least the turbo and manifold h...

micky

99.9% the issue is solved. Ran the boat today and the coolant level went over the full mark on the plastic bottle when the engine was hot and now that it cooled down the level is where it was after refilling it this morning. Picture 1: How I found it this morning before refilling it Picture 2: Just ...

micky

Ran the boat today and for the first time I see the coolant above the "full" mark on the plastic tank when the engine is hot. Need to wait until it cools down but this is a good signal.

micky

Replaced the heat exchanger, drained the whole block from the coolant, flushed everything and filled it back up with water and uv dye. Ran the engine for about 1.5 hrs at idle at the dock and this is what was happening. Up to now I've added about 1/2 of the plastic bottle. I'm hoping this is just ai...

micky

Removed and pressure tested the heat exchanger today to 90 psi and it did not leak. I'm running out of options here. I looked into the old engines and saw that behind the oil cooler (which the 260's don't have) there is a coolant line with 2 clamps and also there are 2 freeze plugs behind the flexpl...

micky

Just ran the engine at 1300 rpm for 1 hr with the pressure tester connected to the engine. It never went above 5.5 psi and when I removed it after the engine was cold there was no coolant missing to I connected the plastic overflow tank back to the engine and filled it up to the full mark. I'll repo...

micky

Micky Sorry to hear your problems have continued. Thought you had it with the last report. Hopefully this will do it and you can enjoy the fruits of your labor. I hate when people use a quick fix to make things work, then you inherit their problem. Still loosing coolant :x Only part to be replaced ...

micky

I sent you a PM.

micky

Yes, also going to replace the front seal as its pretty easy. I already have the rear seal but don't want to disassemble the whole thing.

micky

In february's trip I started seeing some oil on the generator's drip pan as it was running non-stop for 3 days. This past weekend it leaked more oil so decided to remove the generator to investigate. I though it was the rear main seal but discovered today that the issue is the head gasket. What I fo...

micky

Found the pitting and water mark on the manifold, cylinder #6. Just like in the turbo.

micky

Just replaced the exhaust manifold. As you can see (red rtv) someone worked on this before.

micky

I was able to run the boat yesterday with my dad and today the coolant level is low once again, when I told him that the level was down, he said that that engine's exhaust was smoking a little bit white compared to the other one so I'm going to replace the exhaust manifold. I already have it so here...

micky

Well, level is still at full. Will run the boat next weekend and if there is no change I'll drain the water with dye and refill with coolant.

micky

Went to the boat today and the level was at the "full" mark like it should. Hopefully it was air in the system. Ran the engines today for 1.5 hrs until they got to temperature and will check again next weekend.

micky

I will pressure test it again next weekend.

micky

Went to the boat today and coolant is low once again, about 1/2" low on the reservoir. At this point I'm going to replace the exhaust manifold. I'll keep you guys updated.

micky

Did that qa long time ago and the pressure didn't drop.

micky

Ran the engines last night at idle for about an hour and this morning there was no coolant missing. All I can think is that the drain that was hand tight was the issue. I'll run it next weekend and confirm back.

micky

Hi Tony,

Yes I did replace both caps with new ones.

micky

Micky I'm not sure what the issue is here. If the engines are not overheating what I'm reading is just normal level fluctuation in the overflow tank and the expansion tank. When my 6LP's were new to me I kept peeking into the expansion tank and seeing it was a little low, trying to add coolant. Who...

micky

I bought mine from www.turboturbos.com

They were recommended on this site.

micky

Went to the boat today and the reservoir was about 1"-1.25" low. Also the engine needed to be topped off. I haven´t started the engine since last weekend when it was a little low and I didn´t filled it back up to the "full" line. Can this be that air is getting out of the system? Because its weird t...

micky

Went to the boat yesterday and removed the coolant from the engine. When I was going to open the coolant drain on the heat exchanger I was able to open it using my hand, it wasn't tightened (maybe this was the issue, but the bilge always has been dry). Went ahead and removed the coolant and flushed ...

micky

Micky How much did you lose? If it was a head gasket, I would suspect that you would see steam coming out the exhaust and possibly milky oil. Exhaust Manifold is always a possibility, or you have a leak somewhere. No milky oil and both engines steam while running if its early morning. During the da...

micky

3/4" - 1" down on the reservoir.

I'm going to remove the exhaust manifold once again and pressure test it to 20-30 psi and while its pressurized I'll heat it some with a torch to see if the pressure goes down.

micky

Last september I replaced the turbo because it had a pin hole. Ran the boat in november and the coolant was at the right level. After running the boat last weekend the coolant level is down again. I ordered the hydrocarbon tester to see if the issue is the head gasket but I doubt it. I'm leaning tow...

micky

After replacing the turbo (it had a pin hole) coolant level is still going down. I'm thinking its the exhaust manifold as the coolant level only goes down after running the boat and cooling off. Bilge is completely dry.

micky

Went to Culebra with my dad for the weekend. Everything ran great and not 1 thing failed on the whole trip. Cruised at 3000 rpm 16-17 knots until my dad took the helm. 3200-3300 rpm at 20-21 knots. Let me say that I was only at the helm for 30 minutes during the whole weekend......... https://i.imgu...

micky

Believe it or not, its the wettest boat I've ever had. I removed the front teak spray rails as they were rotted and it was a huge mistake. On windy days all the spray goes directly towards the captain.

micky

Finally the enclosures were finished. Front and half of the sides. Now we're working on the other half of the sides. https://i.imgur.com/LLSlIQm.jpg https://i.imgur.com/80r1Ka4.jpg https://i.imgur.com/6icZlRb.jpg https://i.imgur.com/rQv0tgJ.jpg https://i.imgur.com/6ehEPyj.jpg https://i.imgur.com/7za...

micky

Thank you all!!

micky

First "long" cruise.

https://imgur.com/Xk1nO7D

https://imgur.com/59tF0uM

micky

I can finally confirm that the issue is solved.

micky

They just did a keel up restoration, New Cat C7.1 engines, complete tower and interior.

micky

Peter, whats the lenght of the tiebar?

micky

Installed the turbo last night and was able to start the engine. As soon as it started I knew I had forgotten a plug somewhere as I could hear a leak so this morning I went and removed that plug from the old one and will install it on saturday.

micky

I prefer to know what the issue was before having a $150 credit.

micky

I think I found the issue inside the turbo. A pin hole. I poked it and water came out so cut the turbo in half so I could see it better.

micky

Turbo lost 5 more psi yesterday during the day and this morning it had lost another 10 psi. I ordered it from the website you posted, couldn't find it anywhere else for that price.

micky

Ordered one of the OEM at 4pm and at 5pm it was already shipped.

micky

Pressure tested the turbo to 60 psi of nitrogen and it lost 5 psi in the first 10 minutes. Left it pressurized until tomorrow morning.

micky

Are these OEM turbos or chinese? I've seen the Yanmar turbos from $5,500 to $3200. IHI turbos in the $2500 range.

micky

I may have found the leak, removed the turbo and on the exhaust side it has coolant residue, I tasted it and it tastes sweet, not salty. As you can see in the pictures, its coming from behind the blades and the riser has no water indications. I will pressure test it tomorrow. https://i.imgur.com/0Bj...

micky

All clamps have been triple checked and are tight. Both caps are brand new. I pressure tested the system a few months back when this issue started, I left 15 psi on the engine for 24 hrs and no loss of pressure, I also pressure tested the exhaust manifold. Three things that may be the issue, either ...

micky

No steam.

micky

I'm still chasing this leak. No visible leaks, turbo and exhaust manifold have been pressure tested, coolant pump is not leaking. Would it be possible that it is a head gasket leak?

micky

Went to the boat, removed the tiebar and cut it in half, then screwed both ends completely in and unscrewed them 4 turns back. Installed everything back and used a SS pipe as a sleeve. This pipe I had it from when I did the swim platform brackets in 2018-2019. The tiebar fit perfectly inside the SS ...

micky

After Labor day weekend I'll remove the tie bar to take measurements and see what I need to buy. Maybe cut it in half and make an insert so I can set them in place and thru bolt them.

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