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hanschristian.org • View topic - Replacing motor mounts on 33T

Replacing motor mounts on 33T

Moderators: warmrain, mimoza

Replacing motor mounts on 33T

Postby rick_bradshaw » Wed Aug 13, 2008 5:42 am

Rick

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Motor Mounts

Postby mitchk » Wed Aug 13, 2008 6:14 pm

Mitch and Deb Karlson
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Seabrook, Texas
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Postby rick_bradshaw » Thu Aug 14, 2008 4:53 am

Rick

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1987 HC 33T #136
http://la-vita.us/blog/
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Motor Mounts

Postby mitchk » Thu Aug 14, 2008 4:01 pm

Mitch and Deb Karlson
SV Camino
1986 HC33T #104
Seabrook, Texas
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Postby rick_bradshaw » Sat Aug 16, 2008 8:35 pm

We realigned the engine/shaft. Moved the engine to starboard approx 3/32" and the forward end of the engine raised approx 1/16". Was going to remove the flex coupler and match the ends metal to metal but found that that would have been male to male. The flex coupler makes it male to female. So, relaigned to the flex coupler. Got it to within .002".

When we started the engine, we still had noise in forward but at a different rpm range again. In reverse the noise disappears. At this point I'm beginning to think that what we are hearing and even feeling a bit is water noise that we had never noticed (I'm having a problem with that though since it is rather hard to miss). After we get this other issue (the mixing elbow & most of the cooling water going straight to the mufflers instead of the mixing elbow) settled, we'll take her out for a run in the harbor to see how this older (orig?) prop works vs the newer (machine?) prop. Might end up putting the machine prop back on.
Rick

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1987 HC 33T #136
http://la-vita.us/blog/
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noise

Postby mitchk » Mon Aug 18, 2008 8:44 pm

The noise we are getting is also only in forward gear, in reverse we have noise, this same senario has been described by othe HC33 owners with the 3QM30 and KH18 transmission as well. Most have reported sound below the 1200 rpm range. Once above 12 to 1400 rpm the noise goes away. I have also decided that some of the noise I am hesring is water/prop noise.
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Seabrook, Texas
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Postby warmrain » Mon Aug 18, 2008 9:28 pm

Alignment has to be done with the boat in the water... and if it has been on the hard, it has to be in the water long enough for the hull to resume its at rest state.

Alignment has to be within 0.005

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Postby ricardo » Mon Mar 02, 2009 12:11 pm

Has anybody seen or tried these;

www.pyiinc.com/images/pdf/rd/RD%20MOUNT ... YANMAR.pdf

Richard
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Postby mike » Thu Jun 04, 2009 7:33 pm

We've gone for the polyflex ones as they have synthetic material for their bases which will not corrode.

Have a look at www.polyflex.com

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