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what tranny for a turboed h22

Discussion in 'HYBRID -> BA-BB /CA-CD' started by -94-AccordH22, Oct 20, 2005.

  1. -94-AccordH22

    -94-AccordH22 Senior Member

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    hi all.

    what would be a better 5 spd for a turboed h22.
    accord or prelude tranny. both will have lsd.
    i heard that the accord has the longer gear span
    what would be a better combo for the h22.
     
  2. ferrarikiller

    ferrarikiller Senior Member

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    I sayH22 trany
    It has shorter gears which is what you want for the 1/4 mile
    and I've only hit 120 with mine in fifth and it still had a few grand to go
     
  3. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    My ecu caps me at 120, and youre right, i had a few grand left too.
     
  4. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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    You'll want a longer-geared tranny. The H23 tranny would be a good choice. I'm not sure if any minor fab'ing needs to be done to get an F22 tranny to an H-series block. The H22 tranny would not be an ideal choice, as it's geared for N/A application.
     
  5. -94-AccordH22

    -94-AccordH22 Senior Member

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    thanks alot everyone. i agree with doch vtec. im going for turbo so the longer the gearing the better.
    as far as i know the f's and h's are interchangable.

    thanks guys
     
  6. 92civicb18b1

    92civicb18b1 The Trisexual

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    NO, everyone needs to stop that thinking.

    Longer gearing = better gas mileage and higher top speed.

    There is no advantage unless you have a 983 hp motor, which I highly doubt you do

    Shorter gearing - quicker acceleration, lower top speed, crappy gas mileage.

    You will regret picking a longer geared tranny unless you're looking for good gas mileage.
     
  7. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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    Really?

    (from http://www.hotrod.com/techarticles/42798/)

    However, this obviously shouldn't be construed as "taller = better, no matter what". Check this out:

    http://www.spdusa.com/new_page_5.htm

    There are two reasons why you might want longer gears. First, turbo cars (especially front-wheel drive) can have a tendency to lose traction in lower gears. Having a longer gear ratio will combat this. Second, power transferred to the ground in lower gears is greater than power transferred in higher gears, so one might rationalize you'd want to stay in lower gears slightly longer.

    This translates (IMO) wanting longer 1st and 2nd gears and short 4th and 5th gears, with 3rd being a tossup.
     
  8. 92civicb18b1

    92civicb18b1 The Trisexual

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    Anyway in this case the shorter geared trans would be better for acceleration/racing. During street driving, don't get on it and there won't be traction issues. At the track get some slicks and you WILL be faster with the shorter geared trans.

    Let's compare a gsr trans to an LS. Obviously both with slicks, same driver, same motor, same track, same weather condition and same car. I can guarentee the gsr will come out on top at the track, auto-x or drag.



    Oh and yes, if he was going to make a hybrid trans a longer 1st and second would make for a better trans, but if this isn't an option the shorter geared would be the faster.
     
  9. integraslut78

    integraslut78 Stylus DJ Extraordinaire

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    I agree with you Bryan shorter gears for you mang, go with the H22 tranny.
     
  10. Citizen_Insane

    Citizen_Insane Senior Member

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    :werd: short gears are always best for acceleration unless your turbo is so stupid huge it doesn't make boost until 5500rpm.
     
  11. 92civicb18b1

    92civicb18b1 The Trisexual

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    and then shorter would still be better...

    Only because, say you have an LS trans, it would drop you out of boost and vtec, everytime you shift.
     
  12. -94-AccordH22

    -94-AccordH22 Senior Member

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    ok.
    well im gunna get on it on the streets. thats just what i get for having a turbo and some kid talking crap revving.
    but i mean i kinda want the best combo for about a 10-13 psi turbo. track, street, auto x, w/e
    o, also this tranny will be lsd'd if they changes anything?

    thanks
     
  13. tab

    tab Super Moderator

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    I have an Auto H22, longer geared than any of them, and I can tell you that I don't fall out of VTEC.



    Also, revs aren't good for a turbo motor. Higher rpms are meant for NA applications. I wouldn't go past redline with a turbo application.

    I'm with dohcvtec_accord.(Chris)
     
  14. ferrarikiller

    ferrarikiller Senior Member

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    Everyone has there preferences. But Sampson Simpson I stick to My story. And I still say That the H22 tranny will work well for you even running 12 psi or whatever you said.

    Does anyone happen to know the gear ratios of the h22 vs. f22 trannys?
     
  15. tab

    tab Super Moderator

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    No drama needed.

    Ask any turbo supplier where the engine should make it's power. Read "Maximum Boost" by Corky Bell.
    Hell, I'll sell it to you, since I've read it cover to cover.

    The pressure on the pistons and rods is about 20% more with twice the horsepower. However, take the engine into higher rpms, and the pressure goes crazy. Turbo motors were made to make power from 2k-6k in most cases. If you want to run 8k turbo, then you better have the motor work to back it up, period.

    I'm not a know it all in this area. I just know what I read about con-rod forces(side pressure on the rod).
     
  16. ferrarikiller

    ferrarikiller Senior Member

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    As soon as I left that last post I went to references and there are specs for h22 tranny but not f22. Any one know f22 specs. Now I'm just curious
     
  17. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    grr...didnt i post that a while back (gear ratios)...lemmie find em

    totally stole this from honda society

    I found another cool one in that post:
    http://www.accordinglydone.com/data/transmissions.php
     
  18. -94-AccordH22

    -94-AccordH22 Senior Member

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    thanks alot for your input guys.
    yea i am probably just doin a 2k to 6k setup at like 12 or 13 with internals.
    im sticking with dohc longer gears is prob what i want so that the turbo stays spooled longer b4 i have to shift.
     
  19. -94-AccordH22

    -94-AccordH22 Senior Member

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    hey all again.
    noone answered my question in the other forum so i might as well ask it here.

    how hard would it be to put an LSD kit into an exsisting tranny. if not hard what are the steps and things i would need to do this?

    thanks again
     
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