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Old 10 June 2008, 18:05   #1
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Yamaha 150 hpdi

Hi i have a yamaha 150 hpdi it run perfectly not missing a beat on a 24 foot ring rib unitil it reached 350 hours. where it just stopped and seized after plugging it in to a computer the problem was to be found as the two middle cylinders had blown and seized this seemed very odd and it dosent make sense it wasn't starved off fuel or oil it was runing fine.

if anyone had a simalar problem with this engine please comment so i can get a bit of better idea of weather this was a common problem.
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Old 10 June 2008, 18:44   #2
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Are you selling the trashed motor by any chance?
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Old 11 June 2008, 01:49   #3
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Yamaha 150 HPDI

We used Yamaha 150 HPDI's for around 7 years in our commercial operation. We have had about 10 - tended to swap them out at around 1800 hours. The only common problems we found were blocked vapour tank filter - we have to jerrycan all petrol it took about 30 mins to fix and we had a number of blown cylinder head gaskets. Otherwise fairly robust.
Having said this as we swapped out the last of our engines last Nov one of the engines had developed a knocking noise from fairly deep inside. We have not investigated the cause.

This possibly unreliable 150 HPDI is for sale - we intend to break for parts but if someone would like the whole lot just get in touch

Tony Hill
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Old 12 June 2008, 16:59   #4
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yamaha 150 hpdi

No sorry i wont be selling it as i thi nk i have found a new powerhead for it but that is interesting that the cyclinders blown in some of your 150's thanks for the feedback


tom
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Old 12 June 2008, 18:03   #5
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http://rib.net/forum/showthread.php?t=20568

Quote:
Originally Posted by Rogue Wave View Post
In the trade HPDI stand for High Probability of Destructive Incident. Unfortunately I am not Joking
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Old 13 June 2008, 07:50   #6
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That's not a very reliable piece of information. A Tony said earlier, the 150 HPDI is a robust piece of kit, and I've had good experience with the 200 based on the same block. I've kept my ear to the ground listening for any reported problems and this thread is one of a very, very small number. What can be problematic are the 250/300 HPDI series based on the 3.3 litre block, I believe early versions of 250/300s had a habit of melting pistons. Our friend Jonathan from Belgium has some information on the later modifications to resolve this.
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Old 13 June 2008, 07:55   #7
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Quote:
Originally Posted by Nos4r2 View Post
Are you selling the trashed motor by any chance?
Matt, no, you cannot put that on the back of an Avon



or could you .........

Pete
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Old 13 June 2008, 07:59   #8
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Quote:
Originally Posted by Pete7 View Post
Matt, no, you cannot put that on the back of an Avon



or could you .........

Pete

LOL no, was thinking of someone else. I'm really happy with my boat now-don't think I want anything else for a while!
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