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how much boost?

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    how much boost?

    How much boost can you safley push to a stock jdm h22 bottom end? anyone know? Ive got a turbo but I dont know if i want to install it with out building my bottom, depending on how much boost I can push to it. id probably have to change out my stage 2 cams back to stock because of the high compression ratio right? any input would be appriecated.


    #2
    The compression ratio isn't what scares me, it's the sleeves' tendancy to crack that scares me.

    Comment


      #3
      the compressoin and sleeves and rings is what you need to be worried about. No more then 6 psi. But that depends on the turbo
      Shift_BOOST

      BOOM!

      Comment


        #4
        Yep, probably get away with a safe 5psi tuned, maybe more but you may do some serious damage if your not carefull! They are making new pistons for h22 that lower compression for boost, without resleeving! If I still go that route, Ill def be using them! (I dont remeber who)

        WaC!

        Comment


          #5
          Originally posted by westsideaccord
          Yep, probably get away with a safe 5psi tuned, maybe more but you may do some serious damage if your not carefull! They are making new pistons for h22 that lower compression for boost, without resleeving! If I still go that route, Ill def be using them! (I dont remeber who)
          www.mahle.com Thats who it is. It almost makes me want to get an H22. no just playing.

          they will tell u every thing u need to know the article was in honda tunning march and a little in april

          IT,S THE SHIT.

          I have not went to it so i don,t know im staying single. if they dont tell u all the info i got both mags ill be happy to try to help.
          Last edited by chicago; 03-09-2006, 09:18 AM. Reason: Im dumb
          www.myspace.com/spayellowaccord This is mine!
          www.myspace.com/autorevolution This is our car club!
          1. 1992 Spa Yellow Accord EX 5spd coupe. I <3 My CB'S
          2. 1992 Grey Honda Accord DX 5spd coupe. I <3 My CB'S
          3. 1992 ? Honda integra Xsi DA6 im so jdm i sleep on my right side.
          4. 1993 Black Honda Civic Hatchback. love my EH

          Comment


            #6
            I say 10 reliably. the H22 sleeves are probably just as strong if not stronger than the F22 sleeves. its the rings you have to worry about

            Owner of https://theclunkerjunker.com

            Comment


              #7
              I thought everyone was afraid of the sleeves b/c they are aluminum and not steel they can't take that much boost. And if you mess it up you have to put sleeves in b/c you can't bore them. That's what Honda Tuning said, you can bore but it's not anything worth bragging about and there are not a whole lot of shops w/ the equipment to do it. IMO, if you're looking to make real power just sleeve the block, even if you run lower compression pistons that still doesn't mean the sleeves will be able to take the heat.

              Just b/c U post more doesn't mean U know more!

              Comment


                #8
                Originally posted by porc933
                I thought everyone was afraid of the sleeves b/c they are aluminum and not steel they can't take that much boost. And if you mess it up you have to put sleeves in b/c you can't bore them. That's what Honda Tuning said, you can bore but it's not anything worth bragging about and there are not a whole lot of shops w/ the equipment to do it. IMO, if you're looking to make real power just sleeve the block, even if you run lower compression pistons that still doesn't mean the sleeves will be able to take the heat.
                Thats exactly what honda tunning said.
                www.myspace.com/spayellowaccord This is mine!
                www.myspace.com/autorevolution This is our car club!
                1. 1992 Spa Yellow Accord EX 5spd coupe. I <3 My CB'S
                2. 1992 Grey Honda Accord DX 5spd coupe. I <3 My CB'S
                3. 1992 ? Honda integra Xsi DA6 im so jdm i sleep on my right side.
                4. 1993 Black Honda Civic Hatchback. love my EH

                Comment


                  #9
                  Originally posted by porc933
                  I thought everyone was afraid of the sleeves b/c they are aluminum
                  There not just aluminum..they are fiber-reinforced metal (FRM). Its probably stronger than iron (and definitly a lot less friction). The only drawback is that they are super thin, which is why they have a bad rep

                  Owner of https://theclunkerjunker.com

                  Comment


                    #10
                    Bottom line is the sleeves are thin. If you not going to run in a safe low boost zone, then no you don't need sleeve. If you want to run higher psi then you need sleeves. Big price diffrence sleeves will hurt your wallet more then just lower compression pistion. Just go w/ what your instinct and wallet tell you.
                    Oh and post lost a pics and dyno sheets.

                    Just b/c U post more doesn't mean U know more!

                    Comment


                      #11
                      Originally posted by Accord R33
                      There not just aluminum..they are fiber-reinforced metal (FRM). Its probably stronger than iron (and definitly a lot less friction). The only drawback is that they are super thin, which is why they have a bad rep
                      Kinda seems like your contradicting yourself... You say there stonger, but there thin that's why there bad... So overall, there not top choice for boost.
                      Shift_BOOST

                      BOOM!

                      Comment


                        #12
                        Originally posted by 92ex
                        Kinda seems like your contradicting yourself... You say there stonger, but there thin that's why there bad... So overall, there not top choice for boost.
                        I never said they were bad. i said they have a bad repuation. In my opinion the whole "H22s are no good for boost" is just a myth. The only downside is that you have to resleeve to get new pistons. Until that point..you should be safe (assuming good tuning as always)
                        Last edited by Accord R33; 03-09-2006, 03:16 PM.

                        Owner of https://theclunkerjunker.com

                        Comment


                          #13
                          wouldn't the bad reputation come from people who have had problems with the sleeves under boost? I don't think I'm seeing it your way(I also just woke up)
                          Shift_BOOST

                          BOOM!

                          Comment


                            #14
                            Originally posted by 92ex
                            wouldn't the bad reputation come from people who have had problems with the sleeves under boost? I don't think I'm seeing it your way(I also just woke up)
                            keep in mind that people who are boosting H22s are usually not looking for 8-10 psi. Just like any other motor, they get boost happy, and keep turning the knob until trouble starts.

                            The original question was how much the STOCK h22 bottom end can handle, and in my opinion it can handle just as much as an F22 until it needs new pistons, in which case it wouldnt be a stock bottom end anymore and its a whole 'nother thread

                            Owner of https://theclunkerjunker.com

                            Comment


                              #15
                              we have no idea how much the f22 can handle stock...
                              Shift_BOOST

                              BOOM!

                              Comment

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