SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: muffbro on June 08, 2013, 07:40:23 AM
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The exhaust hoses from snail to thru-hull on my float are old and a real pain to remove and re-install..... Yesterday one started leaking..tried to stop it by swapping ends .... Spinning it etc .. But the rubber is so hard (and even with the wider T style clamp) I cannot get it to stop..... That would NOT be cool for it to come apart out on the lake.
I guess I should have replaced them when I had everything apart but......
Sigh...
How about some opinions ( I KNOW there's a couple out there ) on what is a good hose to use. I have looked online and there are a lot of different kinds, wire type... non wire....including pure silicone. The silicone are pricy, do they last? I see them used in automobile Turbo set ups... They are heat resistant, but how about in the long haul??? Do they stand up? To Oil gas etc???
Standing by:
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there is a specific hose to use , any really good auto parts store will know which hose is correct. It does not have to have the wire in it. the stuff i just got from my auto parts store seems to hold up great! It was really expensive ! it was almost a 100.00 bucks for 4ft length of it. its the black hose with the green strip on it.
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I double clamp on both sides just in case...
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West marine exhaust hose with wire. Double clamped always.
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The back hose with the green stripes is from Gates., pretty cool stuff. Not cheap but cheaper than silicone. Works great
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More and more of us up here are going with some stainless tubing with a couple of silicone couplers on each end. Another option for you
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More and more of us up here are going with some stainless tubing with a couple of silicone couplers on each end. Another option for you
That too is an option.
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in the same boat (so to speak)... anyone use silicone ? (tween) risers & tips
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A friend used silicone and melted right through it.
-beerjet-
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A friend used silicone and melted right through it.
-beerjet-
good enough... thx
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Its really not a place you wanna have questionable materials.
-beerjet-
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Its really not a place you wanna have questionable materials.
-beerjet-
[/quote
hear that, looks cool doesn't mean is cool?]
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A friend used silicone and melted right through it.
-beerjet-
I always thought, and have read, where Silicone is good for upwards of 500 degrees plus....the water/exhaust coming out of my logs is that not that HOT... I can hold my hand in front of the exhaust when its running and it IS hot....but I also know its significantly cooler than a dry header system.......
Sure I'd like 'simple and easy' to attach to the thru hull ..... Those thick azz hoses i have now are difficult to install.....that being said, That's a big ole hole below the waterline that I want sealed correctly.
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Ok,...after some research: Silicone has a higher temp rating than the EDPM standard such as Trident / Gates or Shields standard wet exhaust tubing.... Corrugated/wire/ no wire/ soft-wall.
Average for EDPM 250 to 275 degrees. Silicone: up to 350 degrees.
Silicone is MUCH more expensive....
A different way as previously mentioned on this thread: From snail to silicone coupler to SS tube to silicone coupler to thru hull is workable, but I personally don't like the idea of multiple connections/clamps.... So I am going with either a Shields or Gates soft wall EDMP and double T style clamps on both sides.
Now I just gotta find a place to buy a 3' stick if the stuff ...... Me living 300 miles from the ocean or any real boating centers means more 'net time .....
Thanks for the input guys.....
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FYI: I bought my 4" silicone hose from McMaster-Carr years ago. I think you can buy it any length you want. Sorry, no part #.
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Found a great deal on some Shields exhaust hose on eBay. Installed and now leak free. It was a breeze to put on compared to the old rock solid stuff that was on the boat when I bought it.
Sent from da phone
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OK...here's the final product.
It was much easier to install the new hose than to remove the old hose...( petrified... rock hard....leaking )
It was a great price too... less than $40.00 bucks including shipping ( I ordered 3 feet and got just shy of 4')
I also tossed the old worm drive clamps for stainless "T" style clamps I bought at Fastenal.
UPSIDE DOWN PHOTOS ???......... :screwy: