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Had no idea 88 trannys were different than 89-91, need some quick help please.

Discussion in 'Civic and CRX - EF' started by Reboticon, Jan 7, 2009.

  1. Reboticon

    Reboticon New Member

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    Alright, I had no idea that the 88 trannys were 21 spline and the 89+ were 20 spline. Through various parts trading I have a lightweight 89+ flywheel, clutch and pressure plate When i went to mate them i realized the spline difference. I ordered just the friction disk and was planning on using it with the pressure plate and flywheel from the 89+.

    This is the correct way to fix this scenario, right?(other than getting an89+ tranny)

    Also,will I need to get 88 axles to match the tranny because of splines? Can i make my own with my current axles and junkyard ends? Thanks in advance
     
  2. D16SiHatch

    D16SiHatch New Member

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    The axles don't change. its just the spline count on the input shaft of the trans that's different.
     
  3. jlicrx

    jlicrx Senior Member

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    just get the 88 Si clutch disc and everything else will work
     
  4. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    he would need a 88 flywheel since its a 88 tranny though correct ?
     
  5. INJEN78

    INJEN78 HS LEGEND

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    i dont think so,because,the flywheel doesnt really connect to the tranny
     
  6. efhondakid

    efhondakid My name is Byron. VIP

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    I think the 88s have a smaller flywheel and clutch.
     
  7. 97hatch

    97hatch ?

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    oem yes the clutch diskis also smaller on a 88 but all the aftermarket clutch sets use the same size disk and have diffrent center hubs
     
  8. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    so in other words if you have a 88 si trans you need a 88 si flywheel correct ?
     
  9. Reboticon

    Reboticon New Member

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    No, an 88 friction disk. I am using a lightweight aftermarket flywheel and 89-91 pressure plate. The 88 pressure plate will only mate to the 88 flywheel (or so i am told) so you use an 89-91 pressure plate.

    Thanks for the info about the splines guys! always lifesavers.
     
  10. jlicrx

    jlicrx Senior Member

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    88 and 89 use the same flywheel which is for a 200mm diameter clutch - 90 and up use the same flywheel which is for a 212mm diameter clutch - if the flywheel you have is for the 200mm diameter clutch, you just need a 200mm diameter 88 Si clutch disc with a 200mm pressure plate, which can be either 88-89 Si, as they are the same - if you have a flywheel for the 212mm diameter clutch, you need 90 and up pressure plate and 88 Accord clutch disc which is 212mm with 21 splines - some aftermarket clutch companies, like ACT, offer a clutch kit with the 212mm pressure plate and 212mm clutch disc with 21 splines - the 212mm clutches will not bolt to the 88-89 200mm flywheel and vice versa (different bolt locations)

    i originally read it that you had a 89 flywheel and clutch, but after rereading your post it sounds to me like you have a 90 and up, since you have a lightweight flywheel - not too many lightweight flywheels around for the 88-89 200mm clutch
     
    Last edited: Jan 9, 2009
  11. Reboticon

    Reboticon New Member

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    doh. well will the200mm clutch work with the 212 pressure plate? thats what i've got now, and im broke.
     
  12. 97hatch

    97hatch ?

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    yea it should work its just smaller and will use up less of the wear surface on the 212mm flywheel and pressure plate
     
  13. Reboticon

    Reboticon New Member

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    cool thanks. Ill upgrade to the 212 later but im pretty much building this car from scratch (auto to manual conversion, dpfi->mpfi->obd1, etc etc) and id like to just get it up and running before i spend any more $$
     
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