[C320-list] Keel bolt tension

[Michael Ferguson]

I have owned my boat since 1997 and have not found it necessary to tighten the bolts. Am i missing something? MichaelNauti Clew 169

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  On Mon, Nov 30, 2020 at 9:37 AM, Allan Field<allanfield47 at gmail.com> wrote:   David - Per Catalina, the keel bolts get torqued to 235 foot pounds with
the weight of the boat resting on the keel on the ground. You can't do this
in the water. You will need a torque wrench that goes to 250 pounds, a
1.50-inch 6-point deep socket for the keel bolts, and extension bars that
will fit between the socket and torque wrench. That said, you think you
have 1.00-inch keel bolts which could change things. If so, I would suggest
you verify the torque pressure directly with Catalina first but this is the
first I have heard that Catalina had 1.00-inch bolts on these boats.

While the Association has a toolbox loaner program and it looks like you
are in AU, I don't believe that the AU program has the torque wrench,
socket and extensions in their program. But it might help to verify as if
they do, then you just pay shipping costs back and forth. [NOTE: I
originally put together the toolbox program many years ago and when I left
4 years ago, AU did not have the keel bolt tools.]

Allan S. Field
Sea Shadow - C387, #103 (formerly C320, #808)
Columbia, MD



On Mon, Nov 30, 2020 at 7:25 AM Charles Holbrook <charlesholbrook at ymail.com>
wrote:

>  David:
> When I bought my boat 6 years ago it was in the cradle.  The first thing I
> did before launching  was to tighten the keel bolts.  I did not loosen or
> lubricate as I thought that might just cause trouble down the road.  I
> borrowed a torque wrench from my local auto repair shop and torqued the
> bolts to 235ft/lbs.  Sorry, I don't remember where I got the torque specs.
> Just google bolt torque specs and you will find a whole menu of
> specifications for reference.  All bolts were tight but one and that one
> took 1/8th of a turn to tighten.  No keel bolt issues since we have owned
> the boat.
> Charles Holbrook 95'Cat 320"Nautigirl"    On Sunday, November 29, 2020,
> 10:39:20 PM EST, David Hayes <davidhayes1 at hotmail.com> wrote:
>
>  Hi all,
>
> I have seen a few comments regarding the appropriate tension for keel
> bolts, but perhaps not a definitive clarification, so would appreciate any
> help to confirm what this should be.
>
> I have a 2006 boat with I think 1-inch bolts; don't necessarily think they
> are loose but am putting the boat up on the hard stand to do antifoul
> shortly and wondered if I should at least check the keel bolts while I'm at
> it.
>
> I did see someone suggesting they may be hard to check without loosening,
> cleaning, lubricating and re-tensioning.....not sure if this is warranted
> or the only way to check all is ok?
>
> Any thoughts appreciated.
> __________________
> David Hayes
> Mobile: 0478 956 056
> 20 Cooks Outlet Road
> Loch Vic 3945
>