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85 Auto 3S-GE into 88 Manual 3S-GE

Discussion in '3sge' started by steveisback, May 14, 2011.

  1. steveisback

    steveisback Guest

    okay well i have a 88 celica 3SGE SX and my engine is blowing hardcore smoke, i did a simple compression test and first 3 cylinders told me they were in the good compression area and then the last cylinder showed no compression at all.. something is wrong so what i did is tipped a tiny bit of oil into the top of that cylinder and then a compression test on it again and it showed about half way this means my piston ring seal is dud,

    so here is the deal, i can either rebuild it or
    put a 85 engine in it, which will set me back about $300
    but the catch is its auto and i know theres some stuff you have to do with the flywheel, im not sure if much wiring is different ...

    does anyone know? has anyonne done it?
    what will be easier?
  2. Seank90

    Seank90 Well-Known Member Donated!

    do you want to keep it auto? and can you be sure the 85 engine is good?
  3. steveisback

    steveisback Guest

    my car is manual and i want it to stay manual, but the engine im buying is an auto yeh its pretty decent
  4. 4thgenceli

    4thgenceli Test Dummy

    How the heck are you gonna put a 85 celica's motor in a 88?

    85 is the 3rd gen (4th gen 86-89) and if memory serves me correct came with a 22r variant (not a 3s motor). Unless it's one of those bastard child celicas that was made so late in 85 it is actually an 86.
  5. celicaman

    celicaman Well-Known Member Donated!

    if it is a 3s-ge you have to use the manual flywheel.
  6. steveisback

    steveisback Guest

    yeah i know it is weird but it is an 1985 st162 4th gen with a 3sge? haha yeh but how hard is the job?
  7. jwagner162

    jwagner162 Well-Known Member Donated!

    86 with a manufacture date of late 85.

    -wiring is basically the same but will have some very small changes. should work as-is but may have a CEL till its sorted. the differences would be the 86-88, not the auto to manual.

    -your from oz?
  8. steveisback

    steveisback Guest

    CEL ?

    yeh brisbane man
  9. cliffmeister3

    cliffmeister3 Well-Known Member Donated!

    Check Engine Light
  10. trel162

    trel162 Well-Known Member Donated!

    I had a mechanic put an auto 86 3sge in my manual 87 sx. Got a new clutch n flywheel, timing belt/seals/pulleys. Used my original 3sge manual loom.
    The replacements run a long time - 100,000km, but its been a struggle, lot of worry, a few tows, run pretty poorly and went through a lot of oil.
    Next time, i'll spend more and rebuild what i have.

    That said, here's Mafix's guide i used when i had a parts car - engine sadly thrown away now

  11. steveisback

    steveisback Guest

    but the thing is, i can either rebuild mine or put this auto engine in...

    the only thing stopping me rebuilding my engine is there is heaps of stuff wrong with it.
    like for instance i take my front right wheel off, look under the motor there is HEAPS of this black sludge covering everything, and plus overall it will be cheaper to put this auto engine in i just need to knoww what you have to do in terms of the flywheel if i wanna keep mine manual
  12. 4thgenceli

    4thgenceli Test Dummy

    Talk to you in a few months then when the new engine goes out.

    Unless you're 110% sure on the previous maintenance and repairs on the other engine, it's never a bad idea to reseal it (gaskets/pumps/etc). That sludge is most likely a combo of power steering fluid and axle grease.

    You'd be cheaper jut rebuilding your currently engine really. Few hundred bux for gaskets, rings, etc and you'll be running again no problem.
  13. Stig

    Stig ST162 Guru Donated!

    Re-do the spare engine in the meantime (few of us actually have the luxury of a spare engine to develop)
    - an 85/6 has bigger ring gaps etc and bound to need replacement anyway.
    Head gasket wil be rusting, seals cracking etc too. Bearings get eaten by acid in the oil,
    rings get glued by sludge, oil relief gets glued shut....

    As Trel & 4gen says - always better to know exactly what you are putting in, a few extra dollars now will save
    a ton of money and time later
    Keep your motor for spares or hot it up later

    All you need to to do is chuck the auto flywheel, then swap your flywheel & clutch over
    On later motors there are differences to the cams and ECU's in the auto - no so with the Gen1

    There are a number of differences on the early 85/6 motor-
    the sump is different, has more bolts
    Sump plug is different, bigger & prone to leaking
    Some have a weird looking T/B
    Rods are heavier
    Manifolds are different castings
    Flywheel seal has a different housing - needs to be mated with the sump pan

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