ilikespeeding Posted June 24, 2006 Share Posted June 24, 2006 Hey, I was wondering if I could get some help with an head, manifold, TB, and fuel system I just bought from a guy at work that pulled it off of an H23. I was wondering: If the H23 head bolts up to the H22 If the injectors are larger than the H22 If the TB, fuel rail, intake manifold are larger If the H23 has a different cam I appriciate it alot. Im more of a mitsubishi guy myself. I recently got a job at a Honda dealership and the whole lot was just sitting under my friends desk who works one bay down from mine. I asked about it and he said that the car he pulled it off of was missing when vtec kicked in and he thought it was something in the head itself and ordered a new one. He said when he pulled the head off that he noticed the head gasket was installed upside-down. If anyone is intrested in any of these parts, make me an offer. That would save me alot of trouble from listing all of these on eBay. -Will Link to comment Share on other sites More sharing options...
cranny Posted June 24, 2006 Share Posted June 24, 2006 If the H23 head bolts up to the H22 - why you would do that i have no clue If the injectors are larger than the H22 - defintely not If the TB, fuel rail, intake manifold are larger- fuel rail might be the same but throttle body and intake manny different. If the H23 has a different cam - H23 and H22 both have "cams", 2 of em , i would say the cams in an H22 would be interchangable with the H23A1 VTEC head. H23's: H23 2.3 16V DOHC PGM-FI 2259 160hp@5800rpm 156tq@4500rpm '93-'95 Prelude Type-S (JDM) H23A1 2.3 16V DOHC VTEC PGM-FI 2259 160hp@5800rpm 156tq@4500rpm '92-'96 Prelude Si (USA) american H22's: H22 2.2 16V DOHC VTEC PGM-FI 2157 190hp@6800rpm 158tq@5500rpm '92-'96 Prelude VTEC (USA) H22A1 2.2 16V DOHC VTEC PGM-FI 2157 195hp@7000rpm 156tq@5250rpm '97-'98 Prelude (USA) H22A 2.2 16V DOHC VTEC PGM-FI 2157 200hp@7000rpm 156tq@5250rpm '99-'01 Prelude (USA) Link to comment Share on other sites More sharing options...
ilikespeeding Posted June 24, 2006 Author Share Posted June 24, 2006 If the H23 head bolts up to the H22 - why you would do that i have no clueIf the injectors are larger than the H22 - defintely not If the TB, fuel rail, intake manifold are larger- fuel rail might be the same but throttle body and intake manny different. If the H23 has a different cam - H23 and H22 both have "cams", 2 of em , i would say the cams in an H22 would be interchangable with the H23A1 VTEC head. H23's: H23 2.3 16V DOHC PGM-FI 2259 160hp@5800rpm 156tq@4500rpm '93-'95 Prelude Type-S (JDM) H23A1 2.3 16V DOHC VTEC PGM-FI 2259 160hp@5800rpm 156tq@4500rpm '92-'96 Prelude Si (USA) american H22's: H22 2.2 16V DOHC VTEC PGM-FI 2157 190hp@6800rpm 158tq@5500rpm '92-'96 Prelude VTEC (USA) H22A1 2.2 16V DOHC VTEC PGM-FI 2157 195hp@7000rpm 156tq@5250rpm '97-'98 Prelude (USA) H22A 2.2 16V DOHC VTEC PGM-FI 2157 200hp@7000rpm 156tq@5250rpm '99-'01 Prelude (USA) This is pretty weak. I have a SOHC VTEC engine. Is there anyway I could tell what engine this came from if I have pictures? The idea of bolting the H23 head to the H22 is to give the H22 a better airflow. To my understanding, the H22 has a 2.2 liter, while the H23 had a 2.3 liter. If the head is designed to flow for a 2.3 liter, it should flow better than a 2.2 liter, right? It wouldnt matter anyways because I dont have an H23. Ill get some pics and be right back. Link to comment Share on other sites More sharing options...
Ben. Posted June 24, 2006 Share Posted June 24, 2006 This is pretty weak. I have a SOHC VTEC engine. Is there anyway I could tell what engine this came from if I have pictures? The idea of bolting the H23 head to the H22 is to give the H22 a better airflow. To my understanding, the H22 has a 2.2 liter, while the H23 had a 2.3 liter. If the head is designed to flow for a 2.3 liter, it should flow better than a 2.2 liter, right? It wouldnt matter anyways because I dont have an H23. Ill get some pics and be right back. Yes but with that comes lack of VTEC..which, really most people get the h23 block and swap the h22 head onto it.. you get a tenth of a liter of displacement and STILL maintain that power spike that VTEC provides..just another building block in maxing out the engines potential. Link to comment Share on other sites More sharing options...
Attaus Posted June 25, 2006 Share Posted June 25, 2006 If you really want more power bolt the JDM H23 VTEC onto the USDM H23 block.. that's what I want to do. Too bad it's so hard to find! PS - Cranny, I don't know where you got that info but the H23 models are mixed up.. JDM has VTEC.. and I think it makes more power, but I could be wrong. Those numbers are atleast for the USDM H23. Link to comment Share on other sites More sharing options...
Theory Posted June 27, 2006 Share Posted June 27, 2006 the h23 and h22 block are the same lets start there. there is no such thing as a vtec head for the h23 because the h22 is the vtec head for the h series motor. also the intake manifold and throttle body are bigger on the h22. the injectors are also the same. and as far as h23 having difftrent cams.... thats the diffrence between the h23 and h22. h22 has 2 vtec cams where as the h23 has 2 none vtec cams. so in essence puting an h23 head on an h22 block although stupid would work but it would run like crap. u would also have to change out the computer to account for your loss of vtec plus i dont know the effects of the oil squirting from the bottom end up to the top end would do without you having vtec. make it simple on yourself. swap the h22 head to the h23 block drill the oil passages, wire the vtec and call it a day after u plug in the h22 ecu. Link to comment Share on other sites More sharing options...
ilikespeeding Posted June 28, 2006 Author Share Posted June 28, 2006 the h23 and h22 block are the same lets start there. there is no such thing as a vtec head for the h23 because the h22 is the vtec head for the h series motor. also the intake manifold and throttle body are bigger on the h22. the injectors are also the same. and as far as h23 having difftrent cams.... thats the diffrence between the h23 and h22. h22 has 2 vtec cams where as the h23 has 2 none vtec cams. so in essence puting an h23 head on an h22 block although stupid would work but it would run like crap. u would also have to change out the computer to account for your loss of vtec plus i dont know the effects of the oil squirting from the bottom end up to the top end would do without you having vtec. make it simple on yourself. swap the h22 head to the h23 block drill the oil passages, wire the vtec and call it a day after u plug in the h22 ecu. Is it possible that its the F23? You guys understand that all I own is the head, intake manifold, fuel rail, injectors, and TB right? I do appriciate your help tho. If anyone is intrested in these parts let me know. Link to comment Share on other sites More sharing options...
Hatch92 Posted June 30, 2006 Share Posted June 30, 2006 no.........it will not fit the f23...... Link to comment Share on other sites More sharing options...
ilikespeeding Posted July 4, 2006 Author Share Posted July 4, 2006 no.........it will not fit the f23...... I was wondering if the SOHC VTEC head I have is an F23 head. I was also wondering the same questions about the F22. Link to comment Share on other sites More sharing options...
dcletten Posted July 4, 2006 Share Posted July 4, 2006 ok, lemme get this right. you have right now in your car a SOHC VTEC correct? and if so, you just bought a h23 top end off your buddy, also correct? if both said items are correct then nothing will work, the motor that you have is an f23, not an h22, h22's are DOHC whereas the f23 is SOHC, so throwing the h23 setup on the f23 bottom end would not work, but that is if my two questions are answered yes Link to comment Share on other sites More sharing options...
ilikespeeding Posted July 10, 2006 Author Share Posted July 10, 2006 ok, lemme get this right. you have right now in your car a SOHC VTEC correct? and if so, you just bought a h23 top end off your buddy, also correct? if both said items are correct then nothing will work, the motor that you have is an f23, not an h22, h22's are DOHC whereas the f23 is SOHC, so throwing the h23 setup on the f23 bottom end would not work, but that is if my two questions are answered yes Close. I have a 4G63 Mitsubishi Eclipse. I work in a Honda dealership and bought a head off of a guy I work with who told me it was a H23 head. I was going to sell the head for much more because encompassed in the deal were the injectors, intake manifold, egr, fuel rail, complete head, and the thottle body for $100. I dont own a honda, I just want to sell the parts so I can fix the bent valves in my eclipse. Link to comment Share on other sites More sharing options...
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