I have a 92 Prelude Si with a stock h23a engine in it. It appears that one piston isn't firing and it looks to be a broken rod/piston. I was wondering if I could just get an F22 short block from an Accord and bolt the H23 DOHC head on to it? The reason for this is that F22 blocks are really cheap and the H costs about double the amount.


I'm not really concerned about performance so I guess the whole long block swap could be an alternative. In any case I'd like to know the above. Thanks..

 

Go for the F23 bottomend.

 

So the F23 is from the newer accord? will this all bolt up to a h23 head?

 

https://honda-tech.com/zerothread?id=1046336

 

So i read all that stuff over. Honestly it seems like more trouble than its worth for this non performance car. Its an auto BTW. Maybe I'll just try to find a cheap SOHC f22.

 

man i did the f22/h23 hybrid and i love it...very easy and straight forward head swap....lots of good mid range....

 

I had a Prelude SI, which the previous owner had put an F22 in.

The F22 had bent valves.

I swapped the H23 head DIRECTLY to the F22 block. NO modification of the headgasket required. Only difference was the oil pressure switch, knock sensor, and some coolant sensor. I THINK my car had an F22 ECU, because it didn't throw a CEL, nor did it have a knock sensor.

 

Grey,
Any chance you know what year the f22 was from? Which head gasket did you use the H23 or the F22?

Thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by s13_240sx_92 &raquo;</TD></TR><TR><TD CLASS="quote">Grey,
Any chance you know what year the f22 was from? Which head gasket did you use the H23 or the F22?

Thanks </TD></TR></TABLE>

all f22s reguardless off the year share the same deck surface pattern and head bolt pattern.

edit:
you would use the f23 head gasket , and then slap on the h23 head. the h series heads have a 87mm bore so you would want the headgasket to sit outside of the head bore. the f23 head gasket bore is a at 67mm perfect for the head (1mm bore over the stock 86mm bore of the f23)

greyout did you do this f22+h23 thing before i started my f22 thread a year back?


Modified by prelittlelude at 10:01 PM 3/22/2005

 

i used the f23 head gasket for mine....

 

This post is usually on the front page of the prelude forum as it is often updated...
https://honda-tech.com/zerothread?id=776837
A 33 page thread about putting h-series heads on f-series blocks...

 

Greyout posted these back around september in regard to his JDM F22B with H23 head swap....
https://honda-tech.com/zerothread?id=999181
https://honda-tech.com/zerothread?id=975646

Pirate

 

Thanks for the good info.

Is there any difference between the f22a SOHC USDM accord short block and the f22b JDM DOHC short block?

 

The pistons on the JDM F22B are different to bump compression to 9:1. otherwise I don't know.

Pirate

 

does anyone know if you have to use the h23a starter when swapping the h23a into a f22a prelude??? i just put my h23a in and the starter wires dont match