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Thread: My 70 corona MkII ***Updated with more pics***

  1. #1
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    My 70 corona MkII ***Updated with more pics***

    I have a 70 MkII and thought I had a rod knock. I pulled the 8rc out and bought a 78 or 79 corona with a 20r and 4spd manual trans.

    After I pulled both motors. I found that the torque converter on my MkII clunks around when I shake it. Is this normal for these cars? I have had 300zx's, 240sx's, cadillacs and none of their torque converters have done this in fact they dont make any noise. I think this could be the knocking I was hearing when my car was running!

    There are too many differences in the 8rc-20r to make this swap worth while. The carb and intake mani are on the other side thus making he kick down for my auto trans nearly impossible and not to metion the mounts would require some massaging. I would like to put my running 8rc back and drive the car unil I find a good 1st gen rx7 and use it to swap the rotary 5spd into the MKII.

    Does anyone know what automaic transmission came in the 70 MKII? I believe it to be a a30. But am not sure. Also does anyone know where I can get another torque converter?? I have looked online and the local parts houses dont sell them.

    Here are a couple of pics of it as it sits.





  2. #2
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    I have 3 MK2's. please do not install a Rotary into it... 18RG will be the way to go. enjoy the ride.

  3. #3
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    Where would i buy an 18rg?

    I can get an entire running rx7 for around $500.

  4. #4
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    more pics of the whole car when it's back down on the ground, please!

  5. #5
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    I will take some more pics after I get this thing cleaned up. I just put some carpet in it and seats. I got it as a rolling shell pretty much. I just put the gas tank from the 78 corona in it. The wheels are oldschool center line/ssr knockoffs. Fronts are 15x8 -0, and the rears are 15x9 (not sure but think like -12 maybe lower??). I am going to use spacers on the front and will be picking up some flares soon.

    I have been working on this for what seems like forever.

    I now have the motor (8rc) and automatic trans back in and running but it is still noisy!! IDK if it is the trans or the motor. I am going to check the cam bearings as the rod bearings looked fine. I am also going to adjust the vales and hopefully this will quiet it down.

    I am getting really tired of working on this thing and may just buy another 8rc/18rc and auto trans just to get it over with.

    Arrrrgggg.

  6. #6
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    So I picked up a 73 Corona Deluxe 4dr that was running and driving before being totaled out when the owner rearended an old woman that he says cut him off.

    He says it ran great up until the accident. I sure hope so!!

    This one has an 18rc with auto trans. I am going to throw it in tomorrow and hopefully it will run fine.

    I am fairly sure the noises from my stock 8rc are comming from the valves/valve seats in the head. I read that this is common on the 8rc heads. I just dont feel like messing with this one anymore. I scored this 73 for $350 and it was in terrific shape before it was hammered.

    Heres a couple pics of the carcas I picked up for the motor and trans still in it. (gonna suck cutting it out)




  7. #7
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    Re: My 70 corona MkII need some help.

    Quote Originally Posted by jrb1449
    Does anyone know what automtaic transmission came in the 70 MKII? I believe it to be a a30. But am not sure. Also does anyone know where I can get another torque converter?? I have looked online and the local parts houses don't sell them.
    There is a PDF in this post:
    http://www.toymods.net//forums/showthread.php?t=45016

    That has information on automatic transmissions and fitment in older Toyota vehicles.

    It is all in Japanese.
    I hope that isn't too much of a problem...

  8. #8
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    So it turns out it was the transmission that was making the noise. I replaced the engine with an 18rc and auto transmission and it ran really well.

    I have since dcecided to go ahead and swap to a 5spd. The auto is cool but it is very slow.

    I pulled a 5spd from a 77 Toyota pickup. I also used the hardline, master cylinder, and slave cylinder from the same truck. I got a new clutch kit and flywheel for a 77 pickup and it all went together well. I had to rework the transmission crossmember as well as the brake and clutch pedals that I pulled from an RA20 at Picknpull.

    It should be completed tomorrow and it should be much better. I will also have new picks soon. I picked up some new tires and had them mounted as well.

    Smartcar tires:
    175/55 r15 on a 9" rim (rear)



    165/50 r15 (front)



    I still have to lower the rear. Also I still have to pull and stretch the rear fenders out. I want to run these with out the use of add on flares. I think they take away from the look of the car. :wink:

    We will see. Will have some more pics soon.

    Josh

  9. #9
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    Re: My 70 corona MkII need some help.

    Quote Originally Posted by ToyGuy
    Quote Originally Posted by jrb1449
    Does anyone know what automtaic transmission came in the 70 MKII? I believe it to be a a30. But am not sure. Also does anyone know where I can get another torque converter?? I have looked online and the local parts houses don't sell them.
    There is a PDF in this post:
    http://www.toymods.net//forums/showthread.php?t=45016

    That has information on automatic transmissions and fitment in older Toyota vehicles.

    It is all in Japanese.
    I hope that isn't too much of a problem...
    Thanks! It is cool to look at but I can't read Japanese. My boy is full Japanese and speaks it fluently but cannot read or write it. Maybe his Moms can help me out with it. lol.

    Thanks for trying to help. I really appreciate it.

  10. #10
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    Nice stretch !

    I have a question about that parts car...

    would you mind selling me sheet metal off that car if its not rotted?
    I could be picking up a 73 Corona for free thats rusty.

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