i was wonderin if it was worth it to put my f22a1 head on a non vtec f23 block to gain more tq and also is it a straight bolt on or what kinds of mods i have to do to make it work? thanks in advanc o also i am turbo already so yea will th f23 block give me more performance. rite now im on 11.5 psi making 266.6 whp and 289 tq




Modified by superjunprelude at 2:52 AM 7/7/2006

 

yes all h and f heads are interchangable with minor mods, f heads are directly swapable, but i don't see a reason to swap on a f22a1 head onto a f23, the heads are likely almost identical anyway.

 

Grab an H23 head for that block. Then you'll gain some power

 

Why do you want the F22A? If you need a good F23 head I have one I will let go for real cheap. 4000 miles carfaxed.

Oh I think I see where you are going with this. you have a Boosted F22A and want the F23 block for more displacement?

Pirate

 

yea i was wonderin if i get more displacment it will give me more power and tq and was wondering if the f22a head is completely swapable ? and if the performance gain is worth it and another question is are the f22a rods smaller or bigger than the f23 rods. ALso wat are teh weak points on boosting a f23 block rite now im boosting 12 psi on stock block

 

yes you can swap the F22A head no problem. As far as boost I have never done it. I do not know which is stronger in that regard.

 

since when are the F23 blocks non vtec? my 99 accord LX w/ the F23A1 had vtec. so im guessing you have a DX maybe F23A5 right? those blocks are good for boosting because of the low compression, but internals are still an issue. and have you thought about the F20b if all the heads are interchangable.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluedlude &raquo;</TD></TR><TR><TD CLASS="quote">since when are the F23 blocks non vtec?</TD></TR></TABLE>

since 1998. Accord DXs are nonVTEC head casting is the same between vtec and nonvtec. It is just the rocker assembly, cam and solenoid that makes the difference.

 

well another question is that f23a block as strong as the f22a1 block?

 

I assume you are asking me. I told you I do not know anything about 'strength' of blocks when it comes to forced induction. Try it and let us know, f-series blocks are cheap.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by superjunprelude &raquo;</TD></TR><TR><TD CLASS="quote">well another question is that f23a block as strong as the f22a1 block?</TD></TR></TABLE>

well i can say this. the f23 block has thinner sleeves than the f22 obviously. And i have a friend that has told me about numberious stories of f23x coming in that run like crap and seem to a a blown head gasket and upon disassembly they find that the sleeve has cracked right at the top vertically right where 2 cylinder sleeves meet. i have only see a few of these none on forced induction.

secondly if they were weak i don't think samIam would have made his boosted motor last more than a weak.

pirate is also runing with higher than normal cylinder presures as he is at 11.7:1

as for the sleeves cranking at the top, it could be a fluke or overheating or manufacturing flaw, but its true f blocks are dirt cheap and very abundent.

 

i am pretty impressed with teh crank girdle/oil gallery setup on f23's, seems to me the crank support is very good compared to earlier F sers and H series engines.