Ok, So Im planning on Finding a Low Mileage motor to replace my turbocharged Original F22...
My question is: ....

Which motor is better for boosting? The F22 or the F23 ?
I Do Not plan on touching the internals...

Thanks

 

From what I've heard in the past the F22 SOHC V-Tec works the best for turbo. However, I have never seen any difinitive comparison

 

HMMM, i wonder why the one with VTEC... I imagined that one maybe had a higher compression ratio?

 

The compression ratio for the f22a1, f22a2, &f22b1(VTEC) is 8.8:1.
Compression for f23a1, f23A4, and f23A5 is 9.3:1
This is according to the Specs from a link in the DIY section. I believe the data is taken from a Chilton manual so I'm not 100% sure it is totally accurate. The same table shows the f23A5 puts out 150hp and I know that is wrong (it should be 135).
Looks to me that if lower compression is what you are looking for, f22 is your winner.
It is also my understanding that turbo manifolds are pretty hard to find for the f23, whereas they are readily available for the f22.

 

Ok cool,...... well then, If I plan to stick to F22 so Everything fits Exact.... Do you know which F22 (VTEC or Non-VTEC) has a lower compression?
Im sure they both have the iron block?

 

not sure which one is lower, I'd assume the non-tec one but that's just a guess. if you go with f22 there is a great site f22parts.com that is loaded with stuff for them

 

MSN.com shows the VTEC f22is much lower compression than the non-VTEC: http://autos.msn.com/research/vip/sp...&trimid=-1
Again, I cannot vouch for the accuracy of MSN, but I think they are usually pretty good.
Crap....I just realized MSN says they are DOHC (obviously wrong) It also says the f22b2 is turbocharged [:@]
Here's Wikepedia's specs on f-series engines: http://en.wikipedia.org/wiki/Honda_F_engine

 

Ok i did a quick search,,,,, and apparently according to Wikipedia Encyclopedia
compression on both F22 are 8.8:1

But what makes the VTEC model have 15 more HP?

 

VTAKKKK does!!
There is a thread that explainshow vtec workssomewhere on this site.

 

Here you go: http://asia.vtec.net/spfeature/vtecimpl/vtec1.html(thanks sir_nasty)