Not sure where the best spot to post this, since its my new turbo head after all. So Mods please feel free to delete.
Wanted to share some pics of my properly modified H22a head for those that are interested to see what it takes and how it looks when done. Its modified to allow proper oil passage, and block others for perfect fitment when mated to the ol' F22 block. The 2 oil drain passages have been deleted/plugged using an aluminum rod pressed in and weld shut. The other 6 ports have been misshapen with aluminum weld for proper F22 block alignment, followed by a complete head resurfacing. It avoids using Honda Bond on your head gasket and prevents leak issues. It also corrects the confusion on what head gasket to use.
Note: This is not a build thread. These pics are for future reference, those attempting to take the right direction in such a hybrid build and to clear up confusion ONLY. Hope these pics can be a help to anyone. I'm sure there's other ways about doing this. This is just one, this is mine
First off, the stock H22 ports
Stock H22 head with H22 Head Gasket (Perfect fit)
Stock H22 head with F22a Head Gasket (Not so Perfect)
Now, for the not so perfect fitment. This is (one) of the reasons why these builds fail. There isn't any surface for a good HG seal, causing serious oil leak issues. There is a total of 8 oil ports, The 2 closes to the timing side need to be completely shut. Leaving the 6 others with this issue.
Looking straight from the top, the HG covers it about 1/8 of an inch. That's only the HG material, not the "sealing" portion of it.
Modified H22a Cylinder Head
Oil port welded shut
Before welded
Modified H22a head, with OEM H22a head gasket.
Since my block is JDM F22B and bored to 86mm. I can use any custom F22a head gasket, in this case a F22a BISI 86mm MLS head gasket.
Since this gasket has been used, its warped and looks like it doesn't seal but it does very well.
Before the modifications with F22a HG
Same goes for this one, its close even then. But still has great coverage for 100% seal
Side by Side Comparison
H22a Head Gasket
F22a Head Gasket
Before mods with F22a HG
Wanted to share some pics of my properly modified H22a head for those that are interested to see what it takes and how it looks when done. Its modified to allow proper oil passage, and block others for perfect fitment when mated to the ol' F22 block. The 2 oil drain passages have been deleted/plugged using an aluminum rod pressed in and weld shut. The other 6 ports have been misshapen with aluminum weld for proper F22 block alignment, followed by a complete head resurfacing. It avoids using Honda Bond on your head gasket and prevents leak issues. It also corrects the confusion on what head gasket to use.
Note: This is not a build thread. These pics are for future reference, those attempting to take the right direction in such a hybrid build and to clear up confusion ONLY. Hope these pics can be a help to anyone. I'm sure there's other ways about doing this. This is just one, this is mine
First off, the stock H22 ports
Stock H22 head with H22 Head Gasket (Perfect fit)
Stock H22 head with F22a Head Gasket (Not so Perfect)
Now, for the not so perfect fitment. This is (one) of the reasons why these builds fail. There isn't any surface for a good HG seal, causing serious oil leak issues. There is a total of 8 oil ports, The 2 closes to the timing side need to be completely shut. Leaving the 6 others with this issue.
Looking straight from the top, the HG covers it about 1/8 of an inch. That's only the HG material, not the "sealing" portion of it.
Modified H22a Cylinder Head
Oil port welded shut
Before welded
Modified H22a head, with OEM H22a head gasket.
Since my block is JDM F22B and bored to 86mm. I can use any custom F22a head gasket, in this case a F22a BISI 86mm MLS head gasket.
Since this gasket has been used, its warped and looks like it doesn't seal but it does very well.
Before the modifications with F22a HG
Same goes for this one, its close even then. But still has great coverage for 100% seal
Side by Side Comparison
H22a Head Gasket
F22a Head Gasket
Before mods with F22a HG
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