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How to obtain...300WHP

Discussion in 'General Tech and Maintenance' started by ovcrash, Nov 11, 2003.

  1. ovcrash

    ovcrash Senior Member

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    What would be the less expensive way to obtain 300 Whp on a 1997 Prelude with a H22A ??
    And what would it take to make 300 WHP possible?

    thanks alot for your tips.
     
  2. MaliWho97

    MaliWho97 Senior Member

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    Spray it with a 150 shot. Not going to guarantee the health of your car though. Haha Truthfully, a custom turbo kit will be your best bet.
     
  3. swanny

    swanny Senior Member

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    :werd: a combo of no2 and a turbo will be the cheapest and if you want it to last id suggest building up your bottom end.
     
  4. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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    Yeah, you're going to have to go forced induction, with or without nitrous. You can very easily hit 300 whp by boosting, and that can be without nitrous. As stated above, you'll also have to rebuild the bottom end, as the stock bottom end most likely won't be able to handle 300 whp.

    You most definitely won't be able to hit 300 whp by staying n/a and wanting to keep the car streetable.
     
  5. MaliWho97

    MaliWho97 Senior Member

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    H22's are closed deck, so just get rods and pistons.
     
  6. lude68

    lude68 Senior Member

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    not all h22s are closed decks....only jdm h22a is a solid deck and if you want 300 whp go to www.turbokits.com and look at the f-max kit! got it and love it! they call it a true o.e. bolt on kit! and its damn nice!
     
  7. MaliWho97

    MaliWho97 Senior Member

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    Oh, thanks man! Good info.
     
  8. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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    92-96 USDM OBD1 H22A1's are closed deck.
    92+ OBD1 JDM H22A's are closed deck.
    97-01 OBD2 USDM H22A4's are open deck.
     
  9. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    not sure on this but dont you need to resleeve an H series to run forged pistons?????? :unsure:
     
  10. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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    You need to resleeve if you're going to overbore more than a standard overbore (.025") and use forged pistons.

    If you just use a standard overbore (pretty much rehoning the cylinder walls), you can run either cast or forged pistons.
     
  11. lude68

    lude68 Senior Member

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    not always but ive always been told "why not? if you are going to spend the money on pistons and rods sleeve it and o-ring that bitch"
     
  12. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    ok cool thanks for the clarification :)
     
  13. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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    :woo:
     
  14. Canuck 93 Civic Si

    Canuck 93 Civic Si Senior Member

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    Just boost it and see what happens. If your motor blows, :eek: then we'll all know that a stock H22 can take 300 horse and we'll be better people for knowing that. :p Then we'll put together an H22 replacement charity fund for ovcrash and get him back on the road again. :)

    Ill put in the first $5

    Sean
     
  15. ovcrash

    ovcrash Senior Member

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    Is it possible to have 300WHP and still be streetable?
    The cars has 200HP stock..OK! it's not 200 whp but still...i canT' see why i can't hit 300 whp and stay streetable.

    And why the H22A bottom end sucks? What's different from any B serie engine? or even K series engine, beside the VTEC in the K that's different?
     
  16. dohcvtec_accord

    dohcvtec_accord WRX Sellout

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    You can pretty easily hit 300 streetable whp if you're boosting. As I said before, you WON'T if trying to stay n/a.

    The H22's bottom end doesn't suck. It's more or less the same as a B-series. However, you're PROBABLY going to have to rebuild it if you want 300 whp. Same goes for a B-series.

    You might hit 280 FLYWHEEL horsepower on a stock bottom end, but I wouldn't go for much more than that. There's also the problem of the relatively high compression ratio of the H22 - another reason to rebuild the bottom end.
     
  17. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    just because its closed deck doesnt necessarily mean its good for boost. the h22 with stock sleeves generally cant handle high levels of boost very well. the sleeves inbetween each cylinder are very thin, and can crack.
     
  18. ovcrash

    ovcrash Senior Member

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    While boosting, would it be better to lower compression? If that's possible?

    Building bottom end, means... pistons? rods? pulleys? cam gears? etc..??

    So in other words, because of the high compression ratio, the H22A is not that great for boosting, but better for N/A, but getting 300Whp in N/A and still being streetable is kinda impossible or pretty much insane.

    So to get this baby have a little decent power it's gonna cost me pretty much alot.
     
  19. swanny

    swanny Senior Member

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    1) yes you may lower your compression by putting in a thicker head gasket or getting different pistons
    2) bottom end would mean rods, some ARP bolts and possibly pistons
    3) the h22 is fine for boosting, and getting 300 whp NA is going to cost you a TON if its even possible.
     
  20. JDMilan

    JDMilan Senior Member

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