The hose going into my aqua muffler is pretty bad and leaking rust water (probably from internal structure wire or bad clamps).
Is this a special hose?
Is this difficult to install, does the exhaust thing on top have a bit of a flex to get this hose on?
Attached is someone else's pic that I circled just to be clear on what hose I need to replace.
Thanks,
kable
When I repared my muffler, I used a hump hose on the input side.
Paul
Hose in the pic is not a recommended - Hump Hose (you can find one on Catalina direct)
I would not conciser replacing it a very difficult job but you will be working in very limited space.
You might want to inspect your exhaust riser while you are on the topic.
Quote from: britinusa on March 24, 2017, 12:50:21 AM
When I repared my muffler, I used a hump hose on the input side.
Paul
Here's the links to the Catalina Direct options.
http://www.catalinadirect.com/index.cfm/product/1023_790/exhaust-hump-hose-1-58id-x-6.cfm (http://www.catalinadirect.com/index.cfm/product/1023_790/exhaust-hump-hose-1-58id-x-6.cfm)
http://www.catalinadirect.com/index.cfm/product/1022_790/exhaust-hump-hose-1-58id-x-8.cfm (http://www.catalinadirect.com/index.cfm/product/1022_790/exhaust-hump-hose-1-58id-x-8.cfm)
Paul
Quote from: britinusa on March 24, 2017, 12:50:21 AM
When I repared my muffler, I used a hump hose on the input side.
Paul
Paul
What length hose did you end up needing? 4" 6" 8"
ken
I purchased the 8" Hump hose. My thought was that if I needed to cut it down I could, but extending it was a no no.
Paul
Good plan :-). And you needed all the length?
Nope, I cut it down from both ends.
Could have left it a little longer, maybe 1/2" or so, but was unsure if I would be able to get it in place.
Paul
kable : When you install your new HUMP hose also check the hose from the exhaust anti-syphon to the nipple on the stainless exhaust riser. Make sure that hose is nylon reinforced and NOT wire reinforced.
The stiff wire reinforced hose (5/8") transmits all of the vibrations from the engine to that nipple weld causing it to eventually crack!!! :cry4`
A thought
Ok, what I am attempting to get at here is... Would a 6 inch pump hose work?
Quote from: britinusa on March 24, 2017, 01:17:02 PM
Nope, I cut it down from both ends.
Could have left it a little longer, maybe 1/2" or so, but was unsure if I would be able to get it in place.
Paul
Quote from: KWKloeber on March 24, 2017, 01:28:19 PM
Ok, what I am attempting to get at here is... Would a 6 inch pump hose work?
It all depends on the way the exhaust riser is "set." While the risers are pretty much identical (on all Mark I to 1.5s) the angle at which they leave the engine could be different. That's because the risers screw into the flange. The length of the risers from the engine to underneath the head sink is a few feet. Just a few degrees different at the flange makes a large difference at the muffler end.
One time many years I cut a lot of hump hose off when I put a new riser in. Last time, when I replaced my muffler and the riser last year, I ended up using all of the eight inch HH.
Buy 8", cut off what you don't need.
This is not a "What minimum length HH should I buy?" question.
What is very strange is Catalina Direct (on their website) sells the 8 in. Hump hose for a few dollars LESS than the 6 in. one??? 6in. is $47.41 and the 8in. Is $44.11.??? May both be over priced, but small change I would think for convenience. I got the 8in. From them a couple of years back and had to cut a it bit but can't remember how much.
Stu
Thanks. Makes sense.
The question wasn't in an attempt to minimize, but rather frugality for members.
I can get 6" HH better priced than CD but, unfortunately, 8" HH isn't on the menu.
kk
Kable,
Here's how I replaced mine.
http://c34.org/bbs/index.php/topic,6878.msg45884.html#msg45884 (http://c34.org/bbs/index.php/topic,6878.msg45884.html#msg45884)
Another reason for the uncertainty, as to which hump hose to get, was that I had to relocate the muffler as I purchased the off the shelf riser which is about 1" longer (on the athwartships tube) than the original on the boat.
Paul
http://c34.org/muffler-exhaust-riser-replacement-2015/ (http://c34.org/muffler-exhaust-riser-replacement-2015/)
Feb 2015. I used the same off the shelf riser from CD. Don't sweat the 1" difference. If you keep the riser high and use the 8" of HH, perfect alignment is not critical.
Guys : Years ago I talked to Gerry Douglas and got Catalina to only stock the 8" hump hose.
I found that (as Stu said) some stainless risers were made locally instead of at the factory and didn't align up perfectly or were a bit shorter.
The price to Catalina was the same for the 6" as it was for the 8".
We decided the installer could always cut it shorter, but it didn't stretch worth a damn!!
A thought
Quote from: Dave Spencer on March 24, 2017, 05:34:28 PM
Kable,
Here's how I replaced mine.
http://c34.org/bbs/index.php/topic,6878.msg45884.html#msg45884 (http://c34.org/bbs/index.php/topic,6878.msg45884.html#msg45884)
This was a great post. Makes me think I can probably do it myself.
Thanks for all the great info.
-kable
Quote from: Ron Hill on March 24, 2017, 01:17:22 PM
kable : When you install your new HUMP hose also check the hose from the exhaust anti-syphon to the nipple on the stainless exhaust riser. Make sure that hose is nylon reinforced and NOT wire reinforced.
The stiff wire reinforced hose (5/8") transmits all of the vibrations from the engine to that nipple weld causing it to eventually crack!!! :cry4`
A thought
Do you happen to know what hose I should purchase to replace this, if needed?
I pretty much follow your posts since our boats are a few numbers away from each other.
Thanks,
Kable
Quote from: britinusa on March 24, 2017, 12:38:15 PM
Quote from: britinusa on March 24, 2017, 12:50:21 AM
When I repared my muffler, I used a hump hose on the input side.
Paul
Here's the links to the Catalina Direct options.
http://www.catalinadirect.com/index.cfm/product/1023_790/exhaust-hump-hose-1-58id-x-6.cfm (http://www.catalinadirect.com/index.cfm/product/1023_790/exhaust-hump-hose-1-58id-x-6.cfm)
http://www.catalinadirect.com/index.cfm/product/1022_790/exhaust-hump-hose-1-58id-x-8.cfm (http://www.catalinadirect.com/index.cfm/product/1022_790/exhaust-hump-hose-1-58id-x-8.cfm)
Paul
Purchasing the 8" right now. Thanks for the direct links!
-kable
Quote from: Ron Hill on March 24, 2017, 01:17:22 PM
kable : When you install your new HUMP hose also check the hose from the exhaust anti-syphon to the nipple on the stainless exhaust riser. Make sure that hose is nylon reinforced and NOT wire reinforced.
A thought
Or use silicone heater hose, as one member herein did.
I used a silicone hose from the anti syphon loop to the riser. (Thanks Ken!)
Here's the 1st of 3 Blog articles about my Engine and Muffler work.
http://www.sailingeximius.com/2016/08/good-vibrations.html (http://www.sailingeximius.com/2016/08/good-vibrations.html)
Paul