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Is a stock clutch good enough?

Discussion in 'Engine Building' started by pauls81sc, Apr 12, 2006.

  1. pauls81sc

    pauls81sc Member

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    I'm swapping a OBD0 B18A into my 89 CRX, it's my first build and swap and my daily driver so I'm playing it pretty safe.

    Here's what is going in:

    JE Pistons, 10.6:1 CR, 281 grams
    ACT Streetlite flywheel
    Mild polish (no porting) on IM
    B18B cams
    JG throttle body
    K&N cone air filter

    I plan to add the Skunk2 IM later on.

    Stock parts unless noted above.

    The OBD0 B18A is listed stock @ 132hp and 121lb-ft torque. I am not sure how much more than that I will get, but it shouldn't be that much. (140 - 145 ???) Havn't a clue about increases in torque over stock.

    So the question again is: Will the stock clutch work and more importantly, will it last?
     
  2. get_nick

    get_nick These snozzberries taste like snozzberries... VIP

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    A stock clutch will work. They will hold that amount of power and grab well. I would look towards the exedy clutch. it is a stock replacement clutch and will hold any extra power from mild mods.

    On the other hand, i would reconsider polishing the head. it isn't going to give you the results people think they will get. You should look into a port match. a polish will just wear out and not give you any real gains. save the money for cams, header and exhaust.
     
  3. pauls81sc

    pauls81sc Member

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    Thanks, Nick.

    The polish a local engine builder friend is doing for free and he swears it will add hp so I'm not going to argue with him. But your input is duly noted.

    Paul
     
  4. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    You'll probably gain about 6% over stock, just based on the rough "rule" of 4% per full point compression increase. Add on an intake, header and exhaust and you can count a few extra ponies in there.

    If you haven't bought the pistons yet, and want to go with higher compression (closer to 11.5:1), you can actually make some serious power once you have the head opened up with a nice port job and a good set of cams.
     
  5. get_nick

    get_nick These snozzberries taste like snozzberries... VIP

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    well if he's doing it for free he should port match it to go along with it. it wont take much more work. good luck :mrgreen:
     
  6. pauls81sc

    pauls81sc Member

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    Okay, thanks for the help guys.

    I have a stock clutch with light mileage on it that I will use.

    But let me ask this question another way:

    How much HP can a stock clutch reliably hold? (Assuming B18A at 130HP stock)
     
  7. get_nick

    get_nick These snozzberries taste like snozzberries... VIP

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    it will hold all the basic bolt ons. i/h/e etc. you need to worry about that stuff when you start adding a forced induction or raise your compression rates. stock will hold an extra 10-15% over stock ratings.
     
  8. phyregod

    phyregod !!YTINASNI

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    You should look at an exedy stage 1 clutch/pp. I believe its 32% stronger holding power. Better than stock, not too expensive, and an awesome clutch. feels/opperates just like the stock one. Nice for spirited launches. : :) I've put them in every honda I've had so far and love them.
     
  9. get_nick

    get_nick These snozzberries taste like snozzberries... VIP

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    that's what i put in my old b16 and in my gsr swap. they are great.
     
  10. GSRCIVICTN

    GSRCIVICTN Lost in a sea of rednecks

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    +1
     
  11. brian11to1

    brian11to1 Senior Member

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    +2

    NoLimitMotorsports on Honda-Tech sells the kit for $250 shipped, pm him... I just ordered my second one.
     
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