Results 1 to 12 of 12
  1. #1
    Junior Member
    Generation
    4th Gen
    Join Date
    Feb 2016
    Location
    Tasmania
    Posts
    5

    F22a1 > H22A OBD2

    Gday guys

    I currently have a 92 f22a1 4th gen prelude and plan to swap to a h22a, I have access to a 97 h22a.
    I plan on using a p13 OBD1 ecu now from the information I can gather the 97 h22 uses
    saturated 280/90cc injectors and the OBD1 92-96 are peak and hold 345cc injectors
    is this a simple as finding a set of injectors from a 92-96 motor or is there more to converting the engine
    to OBD1 also the distributor on the 97 has the same plug as a 92 h22 is there any need to change the dizzy?
    if there is anything else I should know please let me know cheers.

  2. #2
    Junior Member
    Generation
    4th Gen
    Join Date
    Oct 2012
    Location
    South Australia
    Posts
    58
    Yes, you will need to change injectors to the peak & hold for OBD1. I got mine from a Honda Wreckers in Melbourne for $90 shipped.

    Dizzy won't need changing. See here: http://www.preludeaustralia.com/foru...1-distributors

    Vtec will need to be wired up See here: http://www.preludeonline.com/f61/how...2-swap-111568/

    Make sure the p13 is suited for the transmission you are running (auto or manual although they can be modified).

    Change the auto timing belt tensioner to a manual one & install a new belt. See here: http://www.preludepower.com/forums/s...d.php?t=229140

    Adjust valve clearances, add new fluids & you should be good to go.

    Just a note on vtec, it won't engage if you have the car in neutral or park so don't sit in your driveway revving your engine. When it does engage you will hear the exhaust note change but the actual vtec crosseover at around 4500rpm should be smooth if the car is tuned.

  3. #3
    Junior Member
    Generation
    4th Gen
    Join Date
    Feb 2016
    Location
    Tasmania
    Posts
    5
    Cheers my friend thank you for the quick reply

  4. #4
    J "The Stig" B 94vtirozguy's Avatar
    Generation
    4th Gen
    Model
    VTEC
    Join Date
    Sep 2005
    Location
    Victoria
    Posts
    2,980
    there are some mounts that need changing too.
    ------------------------------------
    Winton : 1:48.2
    Sandown : 1:38.3

  5. #5
    Junior Member
    Generation
    4th Gen
    Join Date
    Feb 2016
    Location
    Tasmania
    Posts
    5
    do you know what mounts need to be changed?

  6. #6
    PA Janitor Bob's Avatar
    Generation
    3rd Gen
    Model
    Si 4WS - B Spec
    Join Date
    Jan 2006
    Location
    Western Australia
    Posts
    11,092
    I thought the F and H mounts were the same.

  7. #7
    J "The Stig" B 94vtirozguy's Avatar
    Generation
    4th Gen
    Model
    VTEC
    Join Date
    Sep 2005
    Location
    Victoria
    Posts
    2,980
    no when skinny boy upgraded his from f22 we noticed the mounts were slightly off when putting the h22 in
    ------------------------------------
    Winton : 1:48.2
    Sandown : 1:38.3

  8. #8
    Junior Member
    Generation
    4th Gen
    Join Date
    Oct 2012
    Location
    South Australia
    Posts
    58
    Quote Originally Posted by 94vtirozguy View Post
    no when skinny boy upgraded his from f22 we noticed the mounts were slightly off when putting the h22 in
    Why forums work.

    Here's a link to skinny boys build thread: http://www.preludeaustralia.com/foru...ead&highlight=

  9. #9
    J "The Stig" B 94vtirozguy's Avatar
    Generation
    4th Gen
    Model
    VTEC
    Join Date
    Sep 2005
    Location
    Victoria
    Posts
    2,980
    post 773
    ------------------------------------
    Winton : 1:48.2
    Sandown : 1:38.3

  10. #10
    Junior Member
    Generation
    4th Gen
    Join Date
    Feb 2016
    Location
    Tasmania
    Posts
    5
    When changing the injectors do just need the injector itself or do i need the wiring and fuel rail as well?

  11. #11
    PA Janitor Bob's Avatar
    Generation
    3rd Gen
    Model
    Si 4WS - B Spec
    Join Date
    Jan 2006
    Location
    Western Australia
    Posts
    11,092
    Quote Originally Posted by 94vtirozguy View Post
    post 773
    That was an Auto vs Manual gearbox variation. Not an F Vs H issue.

  12. #12
    Junior Member
    Generation
    4th Gen
    Join Date
    Oct 2012
    Location
    South Australia
    Posts
    58
    Quote Originally Posted by Aura1412 View Post
    When changing the injectors do just need the injector itself or do i need the wiring and fuel rail as well?
    Just the VTEC injectors only, rail & wiring are the same.

Similar Threads

  1. H22A vs H22A1, F22A1, H23A1 distributors
    By JasonG in forum Fourth Generation
    Replies: 15
    Last Post: 28th November 2011, 10:03 AM
  2. f22a1 to h22a vtec engine conversion?
    By mosab in forum Fourth Generation
    Replies: 11
    Last Post: 12th May 2009, 09:40 PM
  3. OBD2 to OBD1
    By peejayy in forum Fifth Generation
    Replies: 4
    Last Post: 15th July 2008, 05:00 PM
  4. Obd2
    By jajm in forum I.C.E / Electronics / Security
    Replies: 3
    Last Post: 5th November 2007, 07:00 AM
  5. OBD2 location
    By Mylord in forum Fifth Generation
    Replies: 12
    Last Post: 5th April 2007, 12:04 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •