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    Y Tube Shutter "Flapper" Maintenance

    79 Sea Ray 260HP - I installed a rebuilt sea water cooled 350 engine and set it up for fresh water cooling with heat exchanger. Log type exhaust manifolds are clean and I have a 145 degree thermostat. The engine slowly heats up to 195 degrees and stays there at 3100 RPM and cools down at lower...
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    Over Heating

    I changed 350/260 HP engine in my 79 Searay. Old engine had NGK BR6FS spark plugs, new engine came with NGK YR5 V Power spark plugs. New engine has a 145 degree thermostat but runs much hotter. My question is; do I have the right spark plugs? I've heard that spark plugs can make a difference in...
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    Heat exchanger

    I recently bought a rebuilt 350 engine for my 1979 SeaRay 260. The engine was setup to run without a heat exchanger. I want to use my heat exchanger. My question is, do I need to make any modifications to the exhaust manifolds and exhaust elbows? Was told that the plate between the manifold and...
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    1995 10HP Honda Oil

    I want to change oil in my 1995 10HP Honda Outboard Motor. What type of oil should I use in the crankcase and what type of oil should I use in the lower unit. Any other comments or tips for servicing this motor would be appreciated. Thank you, Dennis
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    Compression

    1979 Mercruiser 260 HP - I have 105 to 120 PSI compression. And the exhaust really smells bad, not oil but maybe un-burnt fuel. How low is too low for compression and does stinky exhaust mean bad valves? Thanks, sr79
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