engine block interchange

[xChoter]

I am unable to source a D15z1 complete engine, but I have found a head with intake exhaust So I was wondering what blocks I could purchase that are more common that would yield the same MPG. I was looking at the JDM D15B Vtec(not the 3 stage one). What other engine blocks would work and get the same MPG and would any JDM ones work. If i have to make some changes besides just using the d15z1 head let me know please.

[California98Civic]

Originally Posted by xChoter

I am unable to source a D15z1 complete engine, but I have found a head with intake exhaust So I was wondering what blocks I could purchase that are more common that would yield the same MPG. I was looking at the JDM D15B Vtec(not the 3 stage one). What other engine blocks would work and get the same MPG and would any JDM ones work. If i have to make some changes besides just using the d15z1 head let me know please.

You would probably be better served if you ask this question on d-series.org or honda-tech.com. Maybe someone here on EM will chime in with knowledge, but I personally have never done such a swap. Check out this honda-tech thread: https://honda-tech.com/forums/honda-...block-2255038/

Deck height and piston type matter, obviously. A proper timing belt selection could be tricky, too, depending on which block you select.

Here is a guy with d15z1 head on a d16y7 block:

https://www.youtube.com/watch?v=2Gc3P0BeAHA

...as you can see, it ran for four seconds at least!

[xChoter]

thank you