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f23/f22 hybrid

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    f23/f22 hybrid

    I am working on a hybrid swap. Not looking to make huge power I have another swap for that, but in the mean time I am using some parts I have lying around. I have a f22 block out of a 92 accord and am putting a f23 cylinder head on top. The ecu that I will be using is a chipped p28. I am wondering if anyone has had any sucess with this swap. If unsucessful what problems have arisen.

    #2
    I wouldn't reccommend using a head made for an 86mm bore on a block with an 85mm bore. That overlap may cause issues. The F23 head also has an inferior port design and valve angle compared to the F22A head... so aside from adding the gimmicky SOHC VTEC to the engine, you're not really gaining anything at all. The F22A head is the superior head.






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      #3
      Originally posted by deevergote View Post
      I wouldn't reccommend using a head made for an 86mm bore on a block with an 85mm bore. That overlap may cause issues. The F23 head also has an inferior port design and valve angle compared to the F22A head... so aside from adding the gimmicky SOHC VTEC to the engine, you're not really gaining anything at all. The F22A head is the superior head.
      what if you had a f22 head and a f23 block? im also looking around for that answer, and what the benefits are or aren't.
      edit: and what would be involved as far as having to modify anything to make it work.
      Accord SE


      93se
      Members Ride
      Bought from: H22wagon93, Theos92VR4, Hondafan81, Father Time, DarkHusk, Gunrunner, FamousFreak
      Sold to: sulimed, BurtonRiderT6, tishock

      Comment


        #4
        The difference in bore size would be an issue regardless. However, to make the F22A head worthwhile, you'd want some work done to it anyway. I believe you would be able to expand the combustion chamber diameter by 1mm to make it perfect.

        The F23 block would offer increased displacement, obviously (not sure if the F22A head would make for a different displacement than with the F23A1 head, but even so... it'll be more.) Still, you'd be left with a low-compression, low-redline motor. I wouldn't say it's worth the work, unless you happen to have the parts lying around, and want to try building an engine. If you've never built an engine before, then I wouldn't expect long-lasting success... ESPECIALLY if you're cutting your teeth on a hybrid. I know plenty of people that couldn't even rebuild a stock engine and make it reliable.






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          #5
          Agreed. The VTEC of the F23A is purely economical, to save gas. Keep your F22A stock, and go out and buy a P12 or something that will give you some real power. If anything I would research into trying to stroke the F22A, but then that would be some serious money.
          '94 JDM H22A: 178whp 146wtq

          Originally posted by deevergote
          If you say double dutch rudder, i'm banning you...

          Comment


            #6
            F22A head is so underrated, don't waste your time with e-VTEC

            Buy some high comp pistons + a Bisi cam, that would be $$$$ better spent


            Originally posted by lordoja
            im with you on that one bro! aint nothing beat free food and drinks any day of the week, even if its at a funeral

            Comment


              #7
              Originally posted by gloryaccordy View Post
              F22A head is so underrated, don't waste your time with e-VTEC

              Buy some high comp pistons + a Bisi cam, that would be $$$$ better spent
              roger.
              when i rebuilt my motor. i was very surprised to see the engineering behind the whole motor itself beyond. the head. the only thing i didn't like were the balance shafts. thank god there's an eliminator kit out there.

              The f22 is a very good motor for boost. that's where i spent my money

              Comment


                #8
                Originally posted by deevergote View Post
                The difference in bore size would be an issue regardless. However, to make the F22A head worthwhile, you'd want some work done to it anyway. I believe you would be able to expand the combustion chamber diameter by 1mm to make it perfect.

                The F23 block would offer increased displacement, obviously (not sure if the F22A head would make for a different displacement than with the F23A1 head, but even so... it'll be more.) Still, you'd be left with a low-compression, low-redline motor. I wouldn't say it's worth the work, unless you happen to have the parts lying around, and want to try building an engine. If you've never built an engine before, then I wouldn't expect long-lasting success... ESPECIALLY if you're cutting your teeth on a hybrid. I know plenty of people that couldn't even rebuild a stock engine and make it reliable.
                so it would be a f23 head ... like f22 head but work done and combustion chamber bore 1mm more would make it 23? but low red line is eh.
                Accord SE


                93se
                Members Ride
                Bought from: H22wagon93, Theos92VR4, Hondafan81, Father Time, DarkHusk, Gunrunner, FamousFreak
                Sold to: sulimed, BurtonRiderT6, tishock

                Comment


                  #9
                  Originally posted by esskater892 View Post
                  so it would be a f23 head ... like f22 head but work done and combustion chamber bore 1mm more would make it 23? but low red line is eh.
                  What?

                  I'm not sure why I started talking about the F22A head on the F23A block... that wasn't the topic of this thread initially (though it would be a better combo than the F23A head on the F22A block...)

                  Increasing the size of the combustion chamber would not increase displacement. Having a block with a greater bore and stroke would. However, you do not want the combustion chamber diameter to be smaller (or larger) than the cylinder bore diameter, or you'll have a sharp edge overlap... which will invite detonation. Detonation destroys motors.






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                    #10
                    Seriously, a mildly built F22 makes more sense. There are dudes making 170whp w/just bolt ons and the stock 8.8 compression. U throw some 11-12:1 slugs in w/an aggressive cam, 200WHP no problem, with much higher reliability than a fucking hybrid (if you get a competent builder).


                    Originally posted by lordoja
                    im with you on that one bro! aint nothing beat free food and drinks any day of the week, even if its at a funeral

                    Comment


                      #11
                      Absolutely.

                      That, or even a mild turbo setup on a healthy stock-block F22A. $3000 or so will get you all the parts, tools, and tuning that you need to make about 200-220whp fairly reliably for a while. The ringlands will eventually give out, but in the time it takes for that to happen, you can save for internal upgrades. Then you can up the boost and retune... good for another 100whp or more. Then you're looking to upgrade the turbo and fuel system once again.


                      Head swaps are a neat concept, but they have little to offer in our application. If you're going to make a hybrid, do so with the crank and internals to make a stroker kit. That will offer much more benefit than swapping on a head that flows worse, just to have VTEC.






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