PSS vent tube

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smithy

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I am just finishing off fitting a PSS seal to my boat. How high does the vent tube have be to stop the water coming out of the top? I read about some people fitting an overflow bottle but I would rather avoid this.
 
Supposed to be fitted such that the open end is above the waterline even when the boat is heeled. On my boat that means at or above the level of the side decks.
 
Above the heeled waterline, so probably up to the underside of the aft deck - but you will have to work it out for yourself for your boat. Get it up as high as you can and see what happens. Most boats don't get anywhere near the maximum heel very often.
 
If the design of your boat / engine bay is such that it's difficult to get the vent tube high enough, an alternative would be to put a "T" in the engine cooling water outlet, before it gets injected into the exhaust, and pipe the PSS vent up to that. This must be done on planing power boats, and is optional for displacement boats.
 
I had read some stories of the water being forced up quite high when reversing. I can get the end about 2ft above water on centre line of the boat, is this enough to stop dribbles?
 
Kwik Decision said:
If the design of your boat / engine bay is such that it's difficult to get the vent tube high enough, an alternative would be to put a "T" in the engine cooling water outlet, before it gets injected into the exhaust, and pipe the PSS vent up to that. This must be done on planing power boats, and is optional for displacement boats.
Click to expand...

This is the arrangement on Snark. Three seasons and no problems.
 
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