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Old 10-11-2012
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Re: Keel bolt torque values ????

Quote:
Originally Posted by midnightsailor View Post
FWIW:
KEEL BOLT TORQUE SPECS :

Bolt-Diameter.........Foot-Pounds............Nut-Size
0.5".......................80........................0 .75"
0.75"....................250.......................1.12 5"
1.0".....................350........................1. 50"
1.25"....................450.......................1.87 5"

Rick
Yes the same table can be found on the C&C do it yourself web pages. However as I stated earlier I used a 3' breaker bar and torqued as much as I could. I did go to a rental place and they showed me a MONSTER of a torque wrench that could do 350 to 500 Ft Llbs. It's handle was longer then 4' and it was also quite bulky and heavy.There was no way that I could get enough clearance to work this thing in my 26' C&C. Was advised that if I used a 3' breaker bar it would be near impossible to get close to 350 ft lbs and therefore no worry on damaging the bolts. Has anyone actually torqued their 1" keel bolts to 350 ft lbs ? What difference would it make if the bolts were torqued less to between 150 & 200 ft lb??? .I am still concerned that a high torque (350 ft lbs) on an older boat may result in damage such as crushing the fiberglass and worse.
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