unix4linux
Senior Member
Ok, here is what I have gathered so far from doing a little reading. From what I understand, a K24A2 head vs K24A4 head stock to stock, you'll see significant changes as far as power numbers is concerned. So, when trying to output the most power based on stock internals, it is wise to swap the k24a4 head for a k24a2 head due to the cam profile and better head airflow.
Now, if you are going to run a turbo setup and plan on changing the internals of both the block and the head, it makes sense to just keep the k24a4 head. If you do a port/polish/valvetrain job to the k24a4, you can expect the same performance as if the same is done to a k24a2 head. In summary, if staying stock and want to gain more performance, then a head swap is the way to go, if building the entire engine from head to bottom, then keeping the k24a4 head instead of swapping it out for a k24a2 head doesn't matter.
That is what I have gathered from my research so far, can someone shine some light on this subject? Am I on the right track?
I am also curious to know if I can order parts (internals) for a k20a1/2/3 head to use on a k24a4 head? The reason I ask is because I am having a hard time finding parts specifically for a k24a4 head. Everything seems to be for a k20a1/2/3
Now, if you are going to run a turbo setup and plan on changing the internals of both the block and the head, it makes sense to just keep the k24a4 head. If you do a port/polish/valvetrain job to the k24a4, you can expect the same performance as if the same is done to a k24a2 head. In summary, if staying stock and want to gain more performance, then a head swap is the way to go, if building the entire engine from head to bottom, then keeping the k24a4 head instead of swapping it out for a k24a2 head doesn't matter.
That is what I have gathered from my research so far, can someone shine some light on this subject? Am I on the right track?
I am also curious to know if I can order parts (internals) for a k20a1/2/3 head to use on a k24a4 head? The reason I ask is because I am having a hard time finding parts specifically for a k24a4 head. Everything seems to be for a k20a1/2/3