I was planning to build an h23 vtec swap. I have an h22a head that im building. I have an opportunity to pick up a f22 block for cheap. I've heard that many people with this build result in spun bearings. Is this crank bad to work with? Should I just use a f23 block instead?

 

As long as you build it right and mind your clearances you shouldn't have too many problems. I guarantee there are a lot more people with h23vtec builds that are running just fine than those who have problems.

 

Well, if you rev a stock F22/H23 bottom end to 8000+ with a VTEC head what do you expect?
This was a very clear problem when people would just plop a VTEC head on some random 100k stock bottom end.

 

^^ That's right!!

 

rotating assembly balancing
starting with a GOOD crank
bearing clearances (you have to run clearances larger than what the h23 calls for)
proper oiling

All of these and more will play a factor in longevity.
________
California dispensary

 

H22s have 6 quart oil pans so when you rev them there are still 4 quarts in the bottom of the engine. F22s don't use this much oil in there heads, think about it. Also if its a F22b2 it will have to install oil squirters.

 

I'm not planning to rev it over 8000 rpms. What is the max loading at TDC of this block?