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Water inlet Yanmar SD20 saildrive

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mystudio View Drop Down
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    Posted: 21 January 2023 at 18:43
Hi,

I want to change the water inlet on my Yanmar SD20 saildrive, by a time as shown on this picture. (closes better and far more easily). I know this has been done by more people. Anyone can tell me which size it is? Didn't remove it yet (still in the water), but looks like 1/2" or something? 

Thx in advance!

#004|Jefa steering |Jefa DD1 drive|Raymarine EV-2 P70|Raymarine E7 |B&G Triton1 displays|Lewmar sz2 traveller|Dyneema|Flexofold|Carbon pole|ball bearing genoacars|Membrame sails| Spi and asym spi
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redlion View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote redlion Quote  Post ReplyReply Direct Link To This Post Posted: 21 January 2023 at 19:27
I have done this.
DZR equal nipple, male thread, 1/2"bsp
DZR 90 degree hose tail, 1/2" bsp male to 19mm hose.
CR Ball Valve 1/2" BSP female ports
2x 18mm-25mm SS hose clips.
All from ASAP Supplies in UK.
It,s not over till the fat lady drowns
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350Bob View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 350Bob Quote  Post ReplyReply Direct Link To This Post Posted: 22 January 2023 at 13:56
I did something very similar but I wanted to electrically separate the stainless fittings from the aluminium Saildrive so I used a Truedesign skin fitting cut down to form the nipple (male to male connector). I was a little hesitant to do this but I checked with the U.K. agent for Truedesign and they said that they had done it many times. That was five years ago and no problems so far.
H350 #205
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H8jer View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote H8jer Quote  Post ReplyReply Direct Link To This Post Posted: 22 January 2023 at 15:49
Hi MyStudio

You show a picture of the SD60 saildrive as example?
If you have SD20 you should read the whole thread here because the sd20 has tapered threads:


Edited by H8jer - 22 January 2023 at 15:58
Hanse 370#487 30HP 3-cabin
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mystudio View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mystudio Quote  Post ReplyReply Direct Link To This Post Posted: 22 January 2023 at 19:51
Damn, did not expect that. That makes it difficult. It's indeed a SD20. The picture is just an example. So, that means the SD20 has a tapered BSP. That will be a challenge to find a replacement then. @Redlion; is yours a SD20 too or do you have the SD50 version? 
#004|Jefa steering |Jefa DD1 drive|Raymarine EV-2 P70|Raymarine E7 |B&G Triton1 displays|Lewmar sz2 traveller|Dyneema|Flexofold|Carbon pole|ball bearing genoacars|Membrame sails| Spi and asym spi
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redlion View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote redlion Quote  Post ReplyReply Direct Link To This Post Posted: 23 January 2023 at 12:34
Engine is Yanmar 3ym20 so I assume SD20 saildrive. 
The shut off valve modification was carried out by a qualified engineer who did not report any problems but who knows, maybe he just forced it in?
It,s not over till the fat lady drowns
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