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Old 30 May 2013, 12:45   #11
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I'll wait for the you're a numpty replies but I've just put the gearbox back on my 135 Mariner and noticed the small rubber pipe sticking up a few inches at the front on reassembly but no obvious reason! On reading this thread I went out to look but no pitot hole on the leading edge...
Any clues please?
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Old 30 May 2013, 12:48   #12
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It's the pitot pipe

It takes the pressure reading from somewhere else. Not sure where-think it's on the front of the box by the water intakes.

I removed my pitot tubes, they're a waste of time.
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Old 30 May 2013, 12:53   #13
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Thanks for that Nos4r2, I just poked it through when I reassembled, is it ok leaving it until I change the impellor or should I take it off & plug the hole?
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Old 30 May 2013, 13:22   #14
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Drill it out, your boat will go faster!
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Old 30 May 2013, 14:03   #15
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Quote:
Originally Posted by paddlers View Post
Thanks for that Nos4r2, I just poked it through when I reassembled, is it ok leaving it until I change the impellor or should I take it off & plug the hole?
@ Davie

It'll be fine.
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Old 30 May 2013, 14:21   #16
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Cheers
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Old 30 May 2013, 20:18   #17
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I removed my pitot tubes, they're a waste of time.
They're pretty good for hosing down the inside of the console when the tube falls off the speedometer...

jky
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Old 30 May 2013, 22:26   #18
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They're pretty good for hosing down the inside of the console when the tube falls off the speedometer...

jky

I'd laugh, but thats one reason I didnt refit them after hearing that tale from someone else!
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Old 31 May 2013, 03:49   #19
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Yeah, two options are totally fill the exiit pipe or tie wrap the end of the hose so that if it did pop the blanking plug it will just throw the water overboard.

Latter option maybe preferable simply because it means that if someone subsequently buys the engine from you the facility is there, but with the cost of GPS falling all the time probably less of a "sale decider" these days.
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Old 31 May 2013, 07:24   #20
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Drill it out, your boat will go faster!
that save me buying new bigger engine ! speed is all about perception - removed GPS from boat...lol
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