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    Thread: Ac modification

    1. #1

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      ilango[speed thirst]'s Avatar
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      Thumbs up Ac modification

      Call this as some mad plan.

      Note - could be done on jeeps , sumo etc . Not advisable to tinker around in new cars sedans etc.


      OK coming to topic.

      What is an AC.

      Let me explain the cabin part alone.

      The blower blows air in the cooling coil and it will loose its heat there and comes as a cool air to us.

      this is the theory.

      People as said install another roof ac in sumo/tavera/innova basic etc.


      What is that roof ac?
      A sleek unit with smallest capacity blower , with cooling coils but not big as the main unit. Say the main unit has 20 lines running through it , this has only 2 to 3 .

      Installing this roof ac itself helps cooling better and quick.

      The sleek unit itself cost 12k. plus the pipes etc.


      Plan as for the sierra

      At the time electric fan conversion for radiator, i removed the ac belts and yet to fix since then.

      Planned , why not improve ac in this car , since its damn difficult for people esp in the rear.

      So after searching , got a superking blower with cooling coil for 1000/-
      cooling coil was damaged , hence this rate.

      New unit cost 12000/- original and 8000/- kind of duplicate.


      Then after about a month , have got the superking original coil for 3000/-

      Yet to buy other thing like pipes etc.


      The thing is

      Blower and cooling coils bought - ok

      what to do with the one in the car ?

      it was not leaking , but its capacity was not enough.

      Have planned to make some modification and use this too in car , at rear with custom make ducts at rear.

      Mechanics said , when a single thing is enough to cool the car , 2 will make people freeze.

      I hope it must work fine , since mine is normal top. Not plywood or insulated material like in modern car. it will be hot as hell.
      also big glass area and non - sun filmed car.


      Worrying if the compressor could take the load?
      already its 70% life? my guess . Working fine , but guessing since the age.

      Or i have to install some bigger compressor like the sanden 508 compressor?
      The 508 is used in tempo traveler. non factory installed ac in sumo etc.

      But retails about north of 8000/-

      If its that i think i have to wait for another 2 to 3 months!

      Any suggesions , should i leave superking coils alone to work like in any other cab or should try with my theory?
      Man's best girl friend - CAR

    2. #2
      Hondameister
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      sgiitk's Avatar
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      All the best to your endeavour. Just remember a bigger compressor takes more power. You may be able to achieve the same by enlarging the driving pulley on the engine!
      Drive carefully, the life you save may be your own.
      Honda Civic V AT (2010), Honda Brio V AT 2012
      Hyundai Accent GLS, 2003; Hyundai Santro AT (2005)

    3. #3

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      ilango[speed thirst]'s Avatar
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      Thank you.

      Right now have bought the superking spares.

      yet to buy some pipes /gases etc.

      hope i complete within the month.
      Man's best girl friend - CAR

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      Good luck with this. Hope everything goes well.

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      Interesting project . Good luck !
      Quote Originally Posted by ilango[speed thirst
      ;215979]Not plywood or insulated material like in modern car
      Do you have a plan for this? Should make a lot of difference to cabin temperature if some thermal insulation is done.

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      ilango[speed thirst]'s Avatar
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      Thank you GURU


      No "shyamhedge" , right now no plan for liner work. its damn costly. will be later on when it need body works. rusts have started for now. and 2014 is its fc time.!
      Man's best girl friend - CAR

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      ilango[speed thirst]'s Avatar
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      Filled r13a gas almost 600 to 700g.
      ac was chilling like ..err like ice cold in just the single unit set up.

      But sad thing was , compressor was getting more heated.

      R12 compressor are more pressure generating since of the r12 gas.
      but r13a need less pressure compressor ,

      But r13a in high pressure compressor .. ice like cooling , but the compressor was enormously heating.

      with sad heart - let go the filled r13a in air , searched hard for R12 and filled just 500 as of now. its cool but not as such in r13a gas! yet to top up the unit.


      EDIT : No plan to install the so called ac modification , that is installing stock blower and cooling coil as of now. may be after some couple of months.
      Man's best girl friend - CAR

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      Kindly advice Sanden 508 Compressor is suitable for tata sierra turbo 99 model

      Dear All,
      My 99 model sierra turbo having A/C problem,less than 60 kms compressor is not working properly(Denso Compressor,originally fitted from Tata Co.,so i got the advise from my A/c technician,saying that if i need more cooling then go for Sanden 508 with super king blower, cooling coil and condensor,the total cost is approx.16k,but same time one of my friend saying that he also changed his Sierra A/c with Sanden 508 and now the engine is over heating while switch on the A/c,so kindly if anyone can help me to give the advise for sanden 508 compressor suitable for sierra turbo engine.



      Quote Originally Posted by ilango[speed thirst] View Post
      Filled r13a gas almost 600 to 700g.
      ac was chilling like ..err like ice cold in just the single unit set up.

      But sad thing was , compressor was getting more heated.

      R12 compressor are more pressure generating since of the r12 gas.
      but r13a need less pressure compressor ,

      But r13a in high pressure compressor .. ice like cooling , but the compressor was enormously heating.

      with sad heart - let go the filled r13a in air , searched hard for R12 and filled just 500 as of now. its cool but not as such in r13a gas! yet to top up the unit.


      EDIT : No plan to install the so called ac modification , that is installing stock blower and cooling coil as of now. may be after some couple of months.

    9. #9
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      Quote Originally Posted by ilango[speed thirst
      ;218353]searched hard for R12 and filled just 500 as of now. its cool but not as such in r13a gas! yet to top up the unit.
      Hi Sir,
      I also want R12 gas for my contessa,please tell me where is it available and what is the cost,I want 2 kgs,please help me

    10. #10
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      Quote Originally Posted by bharathkumar View Post
      I also want R12 gas for my contessa,please tell me where is it available and what is the cost,I want 2 kgs,please help me
      Which place are you from?
      Toyota Camry MT|TATA Safari EX 4x2

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