I was at the boat yesterday and tried to take the heat exchanger off the engine (Universal M4-30) so I could refurbish the seals and make sure it is clean (http://www.pbase.com/mainecruising/heat_exchanger). One bolt came off easily but the one on the starboard side is a challenge. I cannot get a socket on it because something from the engine or transmission is partially blocking frontal access. I found my wrench selection on board is less than adequate and I need to upgrade. I tried with a short 1/2" open end wrench and was able to get it on, but could not budge the bolt. I left it sprayed with penetrant hoping that will loosen it.
I looked at other wrench types to see what would be useful in this situation and came upon this ratcheting wrench I had not seen before: http://www.amazon.com/Alden-Wrench-56038-Ratching-Open-End/dp/B002VEC9XE/ref=sr_1_1?s=hi&ie=UTF8&qid=1425909762&sr=1-1&keywords=alden+ratchet It looks like something useful to have on the boat as the clamping action should work on both metric and SAE, it is stainless and it ratchets. Has anyone tried something like this? The other type I am considering is the flex head ratcheting wrenches: http://www.amazon.com/Husky5-Pieces-SAE-Flex-Ratcheting-Wrench/dp/B00CBFVKT2/ref=sr_1_4?s=hi&ie=UTF8&qid=1425910197&sr=1-4&keywords=ratcheting+flex+wrenches Dave Aries 1990 C&C 34+ New London, CT
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