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Thread: Medusa

  1. #3501
    Official RnS Addict ivanhoew's Avatar
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    Well today dawned sparklingly blue and pristine , so i hoicked on my Gay M.T.B. Captain hat and shades , jumped in the old battlewagon , and shoved off for the shops .

    Put a tenner in at the petrol station , waited for photographers to finish , then off to lidl's for my first shop in 4 moths .spoinged out of the car like zebedee (magic roundabout) and donned my mask of secrecy ,shop was pretty empty , so whizzed around ,and all was well .

    Loaded it all in , fired up ,and drove out , waited at the lights then the roundabout ,and off i went down the straight to home ...er...well....not so simple......


    Casually glancing at the dashboard i purloined off the Nautilus, i suffered a slight miasma of shock , my vision clouded, and i had to rub my eyes in that , american hero about to attack a jap aircraft carrier in a sopwith camel.... sort of way..


    Yup , my temp gauge for the 4.0 litre engine no .2......(normal reading 85c)..... was reading 112 degrees c !


    ...my internal "god awlmighty" was interrupted when i then noticed the rad water pressure measuring device , was communicating the shocking out of this world fact , that the internal cooling pressure , instead of being the normal 5 to 7 psi , was ..wait .for .it.....wait for it....


    TWENTY BLOODY FIVE PSI OF HEAD GASKET BLOWING GOODNESS !


    At this point i realised i had not tuned the water pump on .


    After booking myself in for a thorough barbed wire flagellation session upon my return , i carried on fluffing the throttle to keep the engines as far below actual aluminium meltdown as possible , 1200 rpm at 45 mph , and watched the dash board for signs of hope .


    the rd pressure came down to 12 to 15 ....15psi is the cap blow off level ...


    front engine was at 95 , rear stayed at 110c .all...the...way...home.....



    drove in , hoofed the bonnet off , and got the garden hose on a "light fairy bath gossamer misting" setting (that's setting no2 in the instructions) , and wafted it over the blocks , upon which point the water droplets cracked off like fire crackers , bit like spitting in a hot frying pan ...it was hot.




    kept this up for 10 mins ,pressure dropped ,so also took off the rad cap , and trickled , very slowly , water in with the pump and fans on .



    bit the bullet , and fired her up (but in the normal way ) , and she sounded ok , no bubbling into the header tank , so maybe , just maybe i got away with it .


    i think , basically , i was driving with no water in the car , and a 11.6:1 compression ration , for about 5 miles .....


    looking on the bright side , all the oil leak stains on the engines have disapeared ..it was so hot it burnt the oil right off and degreased themselves ..







    anyway , one fun fact i noticed on the log for the drive ...











    that timed section is me wheelspinning down standlake main rd in second gear , it goes from 2217 rpm , to 5220 rpm in 0.884 seconds ,,,,that's what you get with 7.6 litres of goodness , and only a 35 lb flywheel .




    I'll allow it




    regards
    robert
    Last edited by ivanhoew; 30-07-2020 at 20:14.

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  4. #3502
    Official RnS Addict thisYup's Avatar
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  5. #3503
    Official RnS Addict ivanhoew's Avatar
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    Quote Originally Posted by thisYup View Post
    I know !

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  7. #3504
    Official RnS Addict mygasser's Avatar
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    hoodathunkit
    need a job done on your project? i may be able to help.

  8. #3505
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    I fitted a thermostatic switch on my race car just in case I forgot to turn fan and pump on, works!!

  9. #3506
    Official RnS Addict ivanhoew's Avatar
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    Quote Originally Posted by budetta View Post
    I fitted a thermostatic switch on my race car just in case I forgot to turn fan and pump on, works!!
    yes i think i must rig up something , i have the pump off to help the battery crank it over , , maybe a relay in the pump feed , that switches off during cranking .

  10. #3507
    Official RnS Addict mygasser's Avatar
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    Quote Originally Posted by ivanhoew View Post
    yes i think i must rig up something , i have the pump off to help the battery crank it over , , maybe a relay in the pump feed , that switches off during cranking .
    that'd work, of a timed relay that powers the pump a preset time after the ignition is switched on.
    neil.
    need a job done on your project? i may be able to help.

  11. #3508
    Official RnS Addict MYTHING's Avatar
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    Or a big GOON light that's on when the pump is off and off when its on

    A standard relay to operate the light using the switched power on to switch the relay off

    Or one of your inventive solutions
    IT'S NOT GETTING WHAT YOU WANT...IT'S WANTING WHAT YOUVE GOT

  12. #3509
    Official RnS Addict Magman's Avatar
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    A steam whistle for when it gets too hot? I reckon that’d fit in nicely with the style of Medusa

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  14. #3510
    Official RnS Addict ivanhoew's Avatar
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    Quote Originally Posted by Magman View Post
    A steam whistle for when it gets too hot? I reckon that’d fit in nicely with the style of Medusa
    now that's another good idea .magman .,,,you're on fire !

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