Recent content by durban

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    Mercruiser 4.5l low vacuum, WOT 4350 and higher fuel consumption

    I connected a Morey,s upper cylinder lubricant vacuum line to my Rochester 2 barrel carb , at idle the vacuum used to be 15 in Hg now its at 20 in Hg.
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    06-5.7 mpi mag starts,, stalls, starts stalls. ran fine last fall

    A vacuum gauge reading will point you in the right direction , don't overlook exhaust restriction a vacuum gage reading will point this out too.
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    Mercruiser 165 I6 Exhaust flapper removal?

    I cut the 2 stainless steel riverts on the right hand side of the minor axis of the eclipse, then lifted the bracket up and pulled the old shutter and flatware shaft out
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    Durbans Johnsonator outboard motors .

    You see this is a 2006 model 4 stroke block with holes eaten into it by salt corrosion , only one of many more and more to come . in the 1st picture there is a hole between the 2nd and 3rd exhaust port looking from the left . in the 2nd picture you will see a hole in water channel opposite the...
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    Durbans Johnsonator outboard motors .

    Did some testing on my new Johnsonator motor.
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    Durbans Johnsonator outboard motors .

    Some testing from my new radiator motor that I designed.
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    Chrysler 75 hp. Difference in spacer plate to same motor?

    The function of that channel is for the water to flow around the exhaust area when and if your poppet valve still works you will also see a hole in the adaptor for the water to exit
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    Honda BF130 problems, needs input

    Do the job properly check the valves you may need to lap them check valve stem clearance and spring heights and replace valve stem seals
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    Honda BF130 problems, needs input

    I will just bring to your attention about these new type cylinder head gaskets .1st they tend to crack 2nd over the years the water friction removes the plastic coating on them and then they start leaking i would replace every 10 years uploaded i one from a mercury 4 stroke and one from honda
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    Honda BF130 problems, needs input

    the welsh plugs i was referring to put good thread sealant on if you gona drill and tap
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    Honda BF130 problems, needs input

    check replace this seal too and clean up salt builds up in there its on top of the pan where the gear shaft goes through
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    Honda BF130 problems, needs input

    Check your yoke too i fixed mine and put 4 coats epoxy after sandblasting
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    Honda BF130 problems, needs input

    Clean up your flush port as well i completely desalted my motor using Durbans nitric acid desalting formula
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    Honda BF130 problems, needs input

    What you can also do is behind your cam shaft you have 2 welsh plugs get some adenoids unscrew the welsh plugs and drill and tap and bolt the anoids to the inside of the welsh plugs this will prevent salt build up inside the cylinder head where you cannot see .the new cylinder heads look like this
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    Honda BF130 problems, needs input

    When i replaced my cylinder head it had a crack between no 1 and no 2 cylinder the newer cylinder heads the water passages are machined better to prevent it i put anodes in between the sleeves to prevent salt build up the depth is sufficient so i cut the adenoids to half the lenth of the depth ...
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