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Old 10-28-2015, 02:06 PM   #21
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Glad you found and are rectifying the problem with the hose, CD. Close call! We've all done bonehead moves in the process of learning...well, at least. I have. It's the recovery and lessons learned that count most.

I suspect with that exhaust hose restriction, you might have had a backup of water pressure that filled your ex manifold and sent the BB mix directly into the cylinders. Under engine operation, the exhaust gas and water pressure overcame the restriction to keep the cylinders clear. Without the engine running, there was no resistance to the reverse flow.
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Old 10-28-2015, 03:24 PM   #22
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Glad you found and are rectifying the problem with the hose, CD. Close call! We've all done bonehead moves in the process of learning...well, at least. I have. It's the recovery and lessons learned that count most.

I suspect with that exhaust hose restriction, you might have had a backup of water pressure that filled your ex manifold and sent the BB mix directly into the cylinders. Under engine operation, the exhaust gas and water pressure overcame the restriction to keep the cylinders clear. Without the engine running, there was no resistance to the reverse flow.

That makes sense.

These exhaust hoses are a bitch to get on! It's only about a 2' section and it has a slight S bend to it. Finally got it on there but it wasn't all the way up on the exhaust elbow, but I clamped it and crossed my fingers. Started it up and of course it's dripping.

Trying to figure out how to get the hose to bend like an S. 😩
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Old 10-28-2015, 03:51 PM   #23
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Greetings,
Mr. 01. "Trying to figure out how to get the hose to bend like an S." How about putting in a couple of elbows. You could do most of your fighting on the bench then your finals on the engine...
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Old 10-28-2015, 04:01 PM   #24
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I'm trying to bend an S with a hair dryer and some tension using a line now. It's getting better but not sure it will bend enough.

I might have to resort to the elbow method. Probably needs to be some special elbow material right?

Sheesh...
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Old 10-28-2015, 04:13 PM   #25
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Greetings,
Mr. 01. With all due respect, I don't think you're going to get too far with a hair dryer. Even a Head Mistress heavy duty, industrial, blow the roof off a barn model. I suspect this exhaust hose is after the water cooling injection point in which case, a fiberglass elbow should work just fine.
Exhaust Fittings | Fiberglass | Marine | Basic Power
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Old 10-28-2015, 05:10 PM   #26
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mine has a fiberglass 45 degree elbow. 18" of hose from the manifold/elbow then the fiberglass elbow, and another 3 or 4 feet of hose to the muffler.
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Old 10-28-2015, 05:33 PM   #27
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CD,

In a situation like yours, Trident 252V Series Blue Corra-Sil Marine Wet Exhaust Hose is my favorite solution. It is very flexible, has a very high temperature rating, but it is crazy expensive! Use high quality SS T-bolt clamps and you will never have to worry about it again. The added flexibility helps to isolate that bouncing Yanmar from the muffler too.

IMO adding additional couplers and clamps just increases complication and potential points of failure.
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Old 10-28-2015, 07:04 PM   #28
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Quote:
Originally Posted by cardude01 View Post
I'm trying to bend an S with a hair dryer and some tension using a line now. It's getting better but not sure it will bend enough.

I might have to resort to the elbow method. Probably needs to be some special elbow material right?
Another Idea: put your exhaust hose outside and let the sun help you. It will get h-o-t even just sitting on a seawall. Then (don't burn yourself) try shoving it on. I've seen that work with large diameter exhaust hoses.
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Old 10-28-2015, 07:06 PM   #29
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Help! Hydrolock!

I finally got it warm enough to bend. Took forever. Put some T bolt clamps on it. No leaks. I'm beat.

Boating is hard...
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Old 10-28-2015, 07:12 PM   #30
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CD,

In a situation like yours, Trident 252V Series Blue Corra-Sil Marine Wet Exhaust Hose is my favorite solution. It is very flexible, has a very high temperature rating, but it is crazy expensive! Use high quality SS T-bolt clamps and you will never have to worry about it again. The added flexibility helps to isolate that bouncing Yanmar from the muffler too.

IMO adding additional couplers and clamps just increases complication and potential points of failure.

I would have gladly paid for that flexible hose but it wasn't available around here.
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Old 10-28-2015, 07:14 PM   #31
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This is how I made it bend. 😳

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Old 10-28-2015, 07:34 PM   #32
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Nice knot. What did you tie on the other end?
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Old 10-28-2015, 07:37 PM   #33
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Greetings,
"What did you tie on the other end?" Hopefully not this:
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Old 10-28-2015, 07:53 PM   #34
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WTG, 'Dude! A little thought, advice, ingenuity and brawn saves another day. I bet that first beer tasted great!
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Old 10-28-2015, 07:55 PM   #35
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Greetings,
"What did you tie on the other end?" Hopefully not this:

The thought did cross my mind.
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Old 10-28-2015, 07:58 PM   #36
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WTG, 'Dude! A little thought, advice, ingenuity and brawn saves another day. I bet that first beer tasted great!

It really did.

It did take lots of brawn. I'm not as brawny as I once was I found out.
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Old 10-28-2015, 08:00 PM   #37
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Nice knot. What did you tie on the other end?

Tied it to a grab rail in the galley. I'm 75% redneck.
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Old 10-28-2015, 08:49 PM   #38
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I'm Jeff Foxworthy's brother by another mother so I understand completely. We shot a TV ad for the company I work for at home. My wife likes to point out the duct tape you can see under the counter holding a piece of trim up. I really need to fix that. Good job on the engine. Mistakes you can recover from are the best kind.
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Old 10-28-2015, 11:00 PM   #39
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Larry's right about the Trident hose....sure beats beating yourself up. Maybe I'll go for some if I can ever get my exhaust hose off after the last time I had to torque it on with a railroad jack.
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Old 10-28-2015, 11:03 PM   #40
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Greetings,
Minor aside...Mr. hh. What the dickens is a railroad jack? Never mind. Looked it up. Go figure...railroad jacks. NOT a lost day, I learned something.
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