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Thread: Overhauling My Corolla (My Mate Since'82)

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    Default Overhauling My Corolla (My Mate Since'82)

    salamz brothers,

    I own a corolla 1982 which I bought brand new in the same year.Now this car is with me for last 25 years and I have driven it about 2.50.000 km without any problems.(never touched engine except tune ups)..still runs very good.But after this much kms now it started burning oil so I decided to overhaul the engine AT HOME.as I have almost every possible tool at home for my rides.

    I have taken the engine out and dismantled it and now going to reassamble...I can take pics and post STEP BY STEP procedure that how an engine is overhauled.....

    (1)PLZ SUGGEST ME THAT WILL THIS THREAD BE OF SOME INFORMATIVE VALUE????

    (2)SHOULD I START IT OR NOT????

    waiting for your suggestions brothers.....................

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    @bluntknife...
    Thanks dear for appreciation..
    Actually I feel that we Pakwheel members is like a family and we are all brothers.we are here to help each other when ever/where ever required.If any one has some knowledge(more or less)it should be shared with other brothers so they may get some benefit as you know that knowledge of any kind is always usefull.
    I do not think that I know much about cars but want to share with pakwheel brothers what ever I know.
    Regards.

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    Salamz Pakwheel Brothers...
    and we continue...
    as you know that block is almost complete.
    Now the next item to go back is the MOST IMPORTANT and that is timing system of the engine.
    There are two basic timings in an engine.
    (1) valve timing....opening and closing the intake/exhaust valves at a specific timing.
    (2)Igintion timing....producing spark by spark plugs at a specific timing....
    Right now we are dealing with the first kind of timing..I.e valve timing....
    different engines use different arrangements for this.
    some engines use "TIMING BELT" to drive Camshaft and some "TIMING CHAIN".
    This particular engine uses timing chain....

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    Timing chain and sprockets are some thing like this..These are old set..small one fits on crank and bigger one on Cam shaft...The sprockets on this engine were perfectly fine and there was NO NEED to replace them only chain replacement was enough.But i could not help my nature...LoL... and managed to find them.I colud to find these gears from lahore (genuine) so asked some one in Karachi who was kind enough to find new genuine gears and chain with tensioner and guide for me..these are old ones......notice the timing marks on both gears...
    Overhauling My Corolla My Mate Since82 -824098

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    New timing gears in place.....
    Overhauling My Corolla My Mate Since82 -824100

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    A closer look...
    Overhauling My Corolla My Mate Since82 -824101

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    And timing chain in place....one has to check the position of timing chian very carefully with respect to timing gears..note that mark on the timing gear of Camshaft is alligned with mark on the timing chain,(the lighter part).
    Similarly on the gear of crankshaft......see.
    Overhauling My Corolla My Mate Since82 -824102

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    you can see timing chain tensioner which is spring loaded in place and chain guide(on the opposite side).Timing chain cover back plate is also in place(the black outer plate).
    Timing cover fits on this plate.(in the above pic).

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    A very nice pic of timing arrangement....you can clearly see timing marks on gear and chain,timing chain tensioner and guide,timing cover back plate with gasket ready to receive timing cover.....
    Overhauling My Corolla My Mate Since82 -824103

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    and timing cover in place.....
    Overhauling My Corolla My Mate Since82 -824104

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    I can load all the pics at once and finish this thread but in that case you wont be able to know what is happenining(those brothers who know very little about it).And the perpose of this thread will not be achieved....so bear with me please....

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    Salamz Pakwheel brothers,
    more updates...
    I forgot to tell that main front seal on timing cover was changed as well (obviously).....
    next item was oil pump.....which is HEART OF THE ENGINE.
    The old oil pump was not that bad and could be reused after the replacement of rotors only but I preffered to go for a new one (genuine)...see.
    Overhauling My Corolla My Mate Since82 -824905

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    Another view.....
    Overhauling My Corolla My Mate Since82 -824917

    you can notice the difference in the size of strainer and pressure relief valve..but the one which was on the engine is 26 years old,and "AISIN" company make like the one (new) now...

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    @Pakwheel brothers...
    Once again sorry for another short brake.Actually I have applied full force to get spitfire painted and spending a lot of time in paint shop as it is very important to check all details before final paint....so hardly getting any time to come on line....and post....And the time I find...no electricity...I think spit will be painted in 3/4 days then I will continue this thread....
    sorry once again..

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    @Spitfire
    thats good.Concentrate on Spit First!
    http://www.haseebawan.com

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    @spitfire

    Please complete this thread
    ----Drive safe----

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    These engines are tough as mother nature itself - I opened up one just for kicks - as the owner said - ring khatam hain oil use horaha hai aur socho 200,000 kms hogae hain - after opening it up and measuring everything - it was in perfect original spec including ring gaps except that the oil scraper ring had become blocked with grunge causing oil consumption, new hone job, new rings in place - lapped the valves and put back together, It ran perfect.. (my original remedy was to run some cleaning agent oil in it and install the missing thermostat valve for the engine to run normally warmed up and self clean itself)

    The timing marks are kind of funny as the older 4K engines need a ruler to align the marks first then install the double row chain.

    btw - spitfire why dont you paint the block with high temp industrial enamel - its about Rs 400/can and makes it look nice and new too (also prevents rusting) - and with such detail - you can also have every outer screw/bolt/nut galvanised - it will make it look like a factory fresh engine.

    btw what fan are you using on this engine? I always throw away the silly fixed plastic fan and install a clutch fan - much more quieter in running and more effecient cooling once the fan clutches at normal engine temp; and it also saves the water pump from dying an early life
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    any updates spitfire?
    Baat karo haq ki, chahay hatt jaye sabki

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    Thumbs up

    Rehman bhai, take some time and bring this thread back to life, give us rest of the training
    If better were within, better would come out.

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    OH GREAT yaar INFORMATIVE THREAD

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