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  1. #1

    Default Tamd41 coolant in oil sump

    While returning home yesterday arvo my starboard engine suddenly stopped, I was going at about 3,000rpm. So came home on one motor, Today I have a look and no coolant engine oil looked between the 2 marks on the dipstick., I had no coolant so put water in the reservoir , but.. all of the water appears to now be in the sump with the oil, there was also a "gluging" sound as the reservoir drained very quickly., I am in Papua New Guinea so no service or dealers here anymore... I thought of the head gasket, but it seemed to drain to fast. I had noticed that the oil pressure gauge was a little l9wer on that motor the last couple of runs, but not dramatically so....Any thoughts would be greatly appreciated

  2. #2
    Join Date
    Jun 2008
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    Default Re: Tamd41 coolant in oil sump

    Does that model have a coolant cooled oil collar?

  3. #3

    Default Re: Tamd41 coolant in oil sump

    I cannot find any details of an oil collar, I will pull the boat out this afternoon and the motor tomorrow, I am hoping I have not done any drastic damage. I am a carpenter so appreciate greatly any inputs on things that are not my forte.

  4. #4

    Default Re: Tamd41 coolant in oil sump

    I think it has een oil cooler but it is rawwater cooled.
    Thatís the strange thing, if the coolant drains so quickly.
    My first thought was also the oil cooler but strange the coolant canít come in there, only by going trough heat exchanger and flowing back.
    So your heat exchanger must leak AND the oil cooler. I sure don,t hope itís the engine but my gues is the headgasked.
    Hope you solve this one and please let us know

  5. #5

    Default Re: Tamd41 coolant in oil sump

    I shall indeed keep you informed, I have just finished pulling the boat out (28 Bertram ) but it's 6 pm now so time for a beer as it is getting dark, a good wash tomorrow and then start pulling shafts and motors tomorrow, Props will need to go down to Australia for repairs also. Yes, I thought the oil cooler was seawater cooled, never thought of the heat exchanger at the same time, thanks.. One of the guys here thinks it may be a hole in a piston, hopefully it will become clearer over the next few days,

  6. #6

    Default Re: Tamd41 coolant in oil sump

    One good thing about these engines, everything can be replaced.
    Valve seat, cilinder liners everything.
    One bad thing about these engines, £££ €€€ $$$
    good luck and fingers crossed

  7. #7

    Default Re: Tamd41 coolant in oil sump

    Fingers and toes

  8. #8

    Default Re: Tamd41 coolant in oil sump

    Ok, motor out and sump off, A hundred pieces of piston..Head off and #1 piston and liner are gone, a lump of piston was wedged against the bent con rod, removed now. I guess a liner and piston kit and a new con rod. The valves seem ok.

  9. #9

    Default Re: Tamd41 coolant in oil sump

    Pfff sh.t !! time to start shopping for parts.

  10. #10

    Default Re: Tamd41 coolant in oil sump

    A friend in another town told me he had an old tamd41 block and head, I had it sent over but it says on the plate that it is a tamd42 p-a......it looks the same, the old head gasket from mine lines up with all the journal hole aligning... would you know what the difference is between these 2 models , from Mr Google it says the 42p is 230hp and the 41 is 200hp

  11. #11

    Default Re: Tamd41 coolant in oil sump

    Sorry,,,not a tamd 42p-a kamd 42p-a

    Quote Originally Posted by andrew m View Post
    a friend in another town told me he had an old tamd41 block and head, i had it sent over but it says on the plate that it is a tamd42 p-a......it looks the same, the old head gasket from mine lines up with all the journal hole aligning... Would you know what the difference is between these 2 models , from mr google it says the 42p is 230hp and the 41 is 200hp

  12. #12

    Default Re: Tamd41 coolant in oil sump

    I think head is the same, don’t know if the camshaft and valves are the same

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