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Leo Crowley 03-07-2014 01:29 PM

Torque wrench
I have a 1981 C&C 30, Mark 1, which we keep in on Lake Ontario and would appreciate advice on the purchase of a suitable torque wrench for the keel bolts. What size do I need and ft-pounds?

Delta-T 03-07-2014 01:35 PM

Re: Torque wrench
Can't help you with the specs, but for a one time need for a inch lbs torque wrench, you can get a free loner at Autozone.

zz4gta 03-07-2014 04:38 PM

Re: Torque wrench
You'll need a ft-lbs and you won't be able to find too many that can go up as high as you need it to. Most will only go to 180-190, you'll need industrial strength after that.

What size are your bolts?

eherlihy 03-07-2014 04:38 PM

Re: Torque wrench
Keel bolts are typically torqued in the range of 80-120 foot pounds. A torque wrench that goes up to 150 foot pounds would be your best bet.

jgeissinger 03-07-2014 04:39 PM

Re: Torque wrench
You can a torque wrench from any number of sources, Sears being a good one. However, be aware that whatever torque values you find for your size keels bolts and nuts is for Clean and Lubricated fasteners. Just tightening them as they are, in a generally semi-corrosive environment, where they have likely been untouched for years, will not give you anything like an accurate reading.

Chas H 03-07-2014 04:52 PM

Re: Torque wrench
You can buy a beam style torque wrench with a half-inch square drive and 150 lb. capacity for 20 bucks. I'd recommend a hardened (black) hex socket and the shortest extension possible that will allow you to swing the wrench above the sole. The wrench won't need to turn much but the beam will bend if the numbers are high. If specs are above 150 pounds you'll need a truck sized wrench.

rugosa 03-07-2014 04:56 PM

Re: Torque wrench
from C & C owner's group website -

Keel Bolt Torques

miatapaul 03-07-2014 05:04 PM

Re: Torque wrench
This one will measure up to 300 foot lbs.

3/4" Torque Wrench

They get consistently good ratings and this one is only $80. The 1/2 size is $10. You will want to make sure you get the correct size socket and an extension as 3/4 is not a common size.

eherlihy 03-07-2014 05:18 PM

Re: Torque wrench
I don't know about the access to the keel bolts on the C&C, but if it is anything like the bilge in my boat, you want a "click-type" as Miatapaul suggests above. The "deflection-beam" type, while cheaper, will not allow you to access, or torque, the bolts.

Put another way;


(these are generic images, and not recommendations of these specific models)

I have one of each - and they are Craftsman brand.

capta 03-07-2014 05:21 PM

Re: Torque wrench
As this is a tool you will rarely use and can be damaged if it gets wet, I would suggest just renting or borrowing one from a yard for the day. Even hiring someone with one to come in and do the torquing, might be a better way. I have a whole tool box filled with specialized tools which need cleaning and lubing, much more often that I use any of them.

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