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Projekt Koncept · 07-26-2004, 10:45 PM

My friend owns a 1990 Honda CRX Si, and wants to do a Mini Me Head Swap. He's looking to swap out the A6 head with a Y8, as it offers higher compression than a Z6. My question is, where can he find a complete head other than a junkyard? I've been searching google to no success. And ebay doesn't look to promising. Also, is there anything besides the head he would need? Any suggestions and help would be appreciated.

dreded90crxsi · 07-26-2004, 11:56 PM

About the only place you'll find a y8 head is through a junk yard, ebay, or people selling them through internet forums. I would try checking every honda related forum you can find and look in their for sale sections. Things you will need besides the head is wiring up vtec and finding a way to activate it. The best way to do it is to convert from obd0 to obd1 and run a p28 ecu. It will give you better fuel maps and has vtec activation already in it. Another good idea is to get the y8 intake manifold. It flows air much better then the a6. Oh yeah when converting to obd1 you will have to change the fuel injectors and distributor.

MugenCRX · 07-27-2004, 12:45 AM

You will also need a new headgasket, I would recommend ARP headstuds if your friend plans on doing anything in the forced induction department and look into converting to OBD1. It will save your friend some headaches.

Projekt Koncept · 07-27-2004, 01:03 AM

Thanx guys, that answered the most important question, on where to get a Y8 Head. After Swaping the head, I'm assuming he'll get some aftermarket Cams and then a Turbo. So with all of this in mind, what is needed to convert from OBD0 to OBD1? And do you have any other suggestions?

dreded90crxsi · 07-27-2004, 01:29 AM

To convert from obd0 to obd1 you can either buy a conversion harness from hasport or you can do the wiring yourself. If you do a search on google for obd0 to obd1 conversion you should be able to find plenty of sites that will tell you step by step how to do it.

Projekt Koncept · 07-27-2004, 09:41 AM

Would this be the correct wiring harness, to convert to OBD0 to OBD1?

http://hasport.com/shop/product_info.php?products_id=85

dreded90crxsi · 07-27-2004, 09:51 AM

Not sure if that's the one or if thats just to wire up everything from the b16 such as vtec. These will work though.

http://www.boomslang.us/obd0.htm

http://jkobdconversionharness.com/mpc/docs...0to%20OBD1.html

Projekt Koncept · 07-28-2004, 12:24 AM

So far this is the list of things my friend will need for the Mini Me swap. Hopefully I haven't missed anything.

OBD0 - OBD1 Wiring Harness
p28 ECU
Fuel Injectors
Distributor
Headgasket

And of course, the Y8 Hhead.

About the ECU, would this be aquired from Hondata, or is it a stock ECU from a newer model? Sorry if this sounds n00bish, but this is somewhat of a learning curve for us. :sad: But we are learning!

Much thanx again!

dreded90crxsi · 07-28-2004, 03:35 PM

The p28 is a stock ecu from 92-95 civic ex and si.

89' Project Civic · 10-20-2008, 07:11 PM

Sorry to open up an old thread guys, but I'm doing a mini-me swap (d16a6 bottom end, d16y8 top end) as well and was just wondering when you said about doing a obd0 - obd1 conversion, wouldnt it be either a obd0 - obd2a or 2b?. I have a p28 ecu for my mini-me swap. I'm just a noob as well and dont know much and am rather confused so I'm not challenging anyone I just need to know what to do, thanks guys!!. As well, I have the y8 head COMPLETELY apart and it's going for a hot-tanking soon, Im looking to maybe go Stage 2 or 3, which companies should I use and would this be a bad idea??.

D15Beater · 10-20-2008, 07:41 PM

Quote:

Originally Posted by 89' Project Civic

Sorry to open up an old thread guys, but I'm doing a mini-me swap (d16a6 bottom end, d16y8 top end) as well and was just wondering when you said about doing a obd0 - obd1 conversion, wouldnt it be either a obd0 - obd2a or 2b?. I have a p28 ecu for my mini-me swap. I'm just a noob as well and dont know much and am rather confused so I'm not challenging anyone I just need to know what to do, thanks guys!!. As well, I have the y8 head COMPLETELY apart and it's going for a hot-tanking soon, Im looking to maybe go Stage 2 or 3, which companies should I use and would this be a bad idea??.

You could just run a pw0 or pr3 on that. Theyre both obd0 and you would only have to run the vtec wires and knock if you went with the PW0. Its a dohc ecu but the y8 head will put you around the same C/R as the B16. Use a y8 head gasket, if you shave the head i wouldnt go over 0.010 of a inch. that would put you around the 10.5:1 ratio.

89' Project Civic · 10-20-2008, 07:51 PM

I already bought the p28 for $40 on eBay.ca. So, what your kind of saying is that if I just do a fresh stock rebuild and shave the head by 0.010 of a inch I will get 10.5:1 cr?. I am kind of confused if I'm staying with a d-series so I don't know if it's worth building the engine really hardcore, do you think sticking with a stage 3 d16y8 would be worth the money and time or will I just build this mini me stock then want a b16a2?. Also, I don't NEED to go with a obd2 setup? Thanks alot for the reply!!.

wes lee · 01-11-2009, 03:54 PM

i thought all we had to do was run a P28 and convert to OBD1 (even though the Y8 is OBD2) i know that OBD1 is able to convert to OBD2 so there shouldnt be an issue

c-rex-beat · 01-11-2009, 04:12 PM

on my swap I used a p28, jumper harness, use a6 fuel rail and injector and intake manifold just to maki it easy. if you use the y8 injector you will also need to change the conetors on harness and the fi box in the corner for it to work and get the same result. use gasket for y8 and get arp head studs for the a6 block. once you raise the compression you will not be able to boost with out blowin the f up. I do have a y8 head minus the vtec solenoid, fresh cam and valves, powder coat cover (orange). pm me if interested.

wes lee · 01-11-2009, 10:17 PM

God i can't wait to blow mine the fuck up!!!

wes lee · 01-11-2009, 10:24 PM

Quote:

Originally Posted by c-rex-beat

on my swap I used a p28, jumper harness, use a6 fuel rail and injector and intake manifold just to maki it easy. if you use the y8 injector you will also need to change the conetors on harness and the fi box in the corner for it to work and get the same result. use gasket for y8 and get arp head studs for the a6 block. once you raise the compression you will not be able to boost with out blowin the f up. I do have a y8 head minus the vtec solenoid, fresh cam and valves, powder coat cover (orange). pm me if interested.

thanks for that info!!! saved my ass

89' Project Civic · 01-12-2009, 12:42 PM

He's 100% right, how's the swap coming along wes lee?

Reboticon · 01-12-2009, 05:19 PM

You can't hot tank aluminum.

89' Project Civic · 01-13-2009, 02:09 PM

89' Project Civic · 01-13-2009, 02:09 PM

I know you can't, but who said that?

raceinspiredrex · 01-16-2009, 01:32 PM

i've heard people saying you can put your head and parts in the dishwasher. like a low budget hot tank lol. what's anybody know about that? good? bad? let me know as it doesn't sound like too bad of an idea

89' Project Civic · 01-16-2009, 10:46 PM

Yeah man, I don't know if I told you that one yesturday, but I'd suggest it. I just got my laundry tub water STEAMING HOT with soap and scrubbed it, I also used pipecleaners to detail it, then I blew it out with my air hose. I also repeated it like 3-4times and it was as good as new. There will be new pics of it in my thread on Monday.

raceinspiredrex · 01-17-2009, 10:33 AM

i've already had my head partially cleaned at the machine shop, i didn't have it completely tore down so it didn't clean some small areas. anyways, yeah, when my girlfriend's not at home i'm going to soak all of my parts and then i'll throw them in the dishwasher lol

89' Project Civic · 01-17-2009, 12:13 PM

HeHe, good idea man, what isn't off of it?.

raceinspiredrex · 01-17-2009, 03:31 PM

well when i had it cleaned before to have it checked for cracks, i didn't pull the valves out. so once i did that, there was a bunch of crap between the valve springs and retainers. also, the bottom retainer, there was a bunch of crap between that and the seat. and i'm going to soak my valves for awhile and then run them through because there's carbon deposits caked on it. i'm going to run my springs and retainers through too

07-26-2004, 11:56 PM	#2
dreded90crxsi Senior Member Join Date: Mar 2004 Posts: 134 iTrader: 0 / 0% Rep Power: 13	About the only place you'll find a y8 head is through a junk yard, ebay, or people selling them through internet forums. I would try checking every honda related forum you can find and look in their for sale sections. Things you will need besides the head is wiring up vtec and finding a way to activate it. The best way to do it is to convert from obd0 to obd1 and run a p28 ecu. It will give you better fuel maps and has vtec activation already in it. Another good idea is to get the y8 intake manifold. It flows air much better then the a6. Oh yeah when converting to obd1 you will have to change the fuel injectors and distributor. __________________ Life is a race, what place are you in?

07-27-2004, 12:45 AM	#3
MugenCRX Senior Member Join Date: Mar 2003 Location: Thornton CO Age: 23 Posts: 1,468 iTrader: 0 / 0% Ride: 1989 Honda CRX HF Rep Power: 28	You will also need a new headgasket, I would recommend ARP headstuds if your friend plans on doing anything in the forced induction department and look into converting to OBD1. It will save your friend some headaches. __________________ They say that you only live life once, but if you live like me....once is enough! -Frank Sinatra

07-27-2004, 01:29 AM	#5
dreded90crxsi Senior Member Join Date: Mar 2004 Posts: 134 iTrader: 0 / 0% Rep Power: 13	To convert from obd0 to obd1 you can either buy a conversion harness from hasport or you can do the wiring yourself. If you do a search on google for obd0 to obd1 conversion you should be able to find plenty of sites that will tell you step by step how to do it. __________________ Life is a race, what place are you in?

07-27-2004, 09:51 AM	#7
dreded90crxsi Senior Member Join Date: Mar 2004 Posts: 134 iTrader: 0 / 0% Rep Power: 13	Not sure if that's the one or if thats just to wire up everything from the b16 such as vtec. These will work though. http://www.boomslang.us/obd0.htm http://jkobdconversionharness.com/mpc/docs...0to%20OBD1.html __________________ Life is a race, what place are you in?

07-28-2004, 03:35 PM	#9
dreded90crxsi Senior Member Join Date: Mar 2004 Posts: 134 iTrader: 0 / 0% Rep Power: 13	The p28 is a stock ecu from 92-95 civic ex and si. __________________ Life is a race, what place are you in?


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07-26-2004, 10:45 PM	#1
Projekt Koncept Junior Member Join Date: Jul 2004 Posts: 21 iTrader: 0 / 0% Rep Power: 11	My friend owns a 1990 Honda CRX Si, and wants to do a Mini Me Head Swap. He's looking to swap out the A6 head with a Y8, as it offers higher compression than a Z6. My question is, where can he find a complete head other than a junkyard? I've been searching google to no success. And ebay doesn't look to promising. Also, is there anything besides the head he would need? Any suggestions and help would be appreciated.

07-27-2004, 01:03 AM	#4
Projekt Koncept Junior Member Join Date: Jul 2004 Posts: 21 iTrader: 0 / 0% Rep Power: 11	Thanx guys, that answered the most important question, on where to get a Y8 Head. After Swaping the head, I'm assuming he'll get some aftermarket Cams and then a Turbo. So with all of this in mind, what is needed to convert from OBD0 to OBD1? And do you have any other suggestions?

07-27-2004, 09:41 AM	#6
Projekt Koncept Junior Member Join Date: Jul 2004 Posts: 21 iTrader: 0 / 0% Rep Power: 11	Would this be the correct wiring harness, to convert to OBD0 to OBD1? http://hasport.com/shop/product_info.php?products_id=85

07-28-2004, 12:24 AM	#8
Projekt Koncept Junior Member Join Date: Jul 2004 Posts: 21 iTrader: 0 / 0% Rep Power: 11	So far this is the list of things my friend will need for the Mini Me swap. Hopefully I haven't missed anything. OBD0 - OBD1 Wiring Harness p28 ECU Fuel Injectors Distributor Headgasket And of course, the Y8 Hhead. About the ECU, would this be aquired from Hondata, or is it a stock ECU from a newer model? Sorry if this sounds n00bish, but this is somewhat of a learning curve for us. :sad: But we are learning! Much thanx again!

10-20-2008, 07:11 PM	#10
89' Project Civic d16a6/d16y8 "mini-me" Join Date: Mar 2007 Location: St. Catharines, Ontario, Canada Posts: 726 iTrader: 0 / 0% Ride: 1990 Honda Civic Si Rep Power: 22	Sorry to open up an old thread guys, but I'm doing a mini-me swap (d16a6 bottom end, d16y8 top end) as well and was just wondering when you said about doing a obd0 - obd1 conversion, wouldnt it be either a obd0 - obd2a or 2b?. I have a p28 ecu for my mini-me swap. I'm just a noob as well and dont know much and am rather confused so I'm not challenging anyone I just need to know what to do, thanks guys!!. As well, I have the y8 head COMPLETELY apart and it's going for a hot-tanking soon, Im looking to maybe go Stage 2 or 3, which companies should I use and would this be a bad idea??.

10-20-2008, 07:51 PM	#12
89' Project Civic d16a6/d16y8 "mini-me" Join Date: Mar 2007 Location: St. Catharines, Ontario, Canada Posts: 726 iTrader: 0 / 0% Ride: 1990 Honda Civic Si Rep Power: 22	I already bought the p28 for $40 on eBay.ca. So, what your kind of saying is that if I just do a fresh stock rebuild and shave the head by 0.010 of a inch I will get 10.5:1 cr?. I am kind of confused if I'm staying with a d-series so I don't know if it's worth building the engine really hardcore, do you think sticking with a stage 3 d16y8 would be worth the money and time or will I just build this mini me stock then want a b16a2?. Also, I don't NEED to go with a obd2 setup? Thanks alot for the reply!!.

01-11-2009, 03:54 PM	#13
wes lee SOHC Fury Join Date: Oct 2008 Location: texas Age: 27 Posts: 65 iTrader: 0 / 0% Ride: 91 civic si hatch Rep Power: 5	i thought all we had to do was run a P28 and convert to OBD1 (even though the Y8 is OBD2) i know that OBD1 is able to convert to OBD2 so there shouldnt be an issue __________________ you eat pieces of shit for breakfast!?

01-11-2009, 04:12 PM	#14
c-rex-beat yeah, it's a vtec. Join Date: Aug 2008 Location: tyler, TX Age: 28 Posts: 142 iTrader: 0 / 0% Ride: 89 crx/z6 Rep Power: 4	on my swap I used a p28, jumper harness, use a6 fuel rail and injector and intake manifold just to maki it easy. if you use the y8 injector you will also need to change the conetors on harness and the fi box in the corner for it to work and get the same result. use gasket for y8 and get arp head studs for the a6 block. once you raise the compression you will not be able to boost with out blowin the f up. I do have a y8 head minus the vtec solenoid, fresh cam and valves, powder coat cover (orange). pm me if interested.

01-11-2009, 10:17 PM	#15
wes lee SOHC Fury Join Date: Oct 2008 Location: texas Age: 27 Posts: 65 iTrader: 0 / 0% Ride: 91 civic si hatch Rep Power: 5	God i can't wait to blow mine the fuck up!!! __________________ you eat pieces of shit for breakfast!?

01-12-2009, 12:42 PM	#17
89' Project Civic d16a6/d16y8 "mini-me" Join Date: Mar 2007 Location: St. Catharines, Ontario, Canada Posts: 726 iTrader: 0 / 0% Ride: 1990 Honda Civic Si Rep Power: 22	He's 100% right, how's the swap coming along wes lee?

01-12-2009, 05:19 PM	#18
Reboticon Member Join Date: Oct 2008 Location: Knoxville Age: 27 Posts: 48 iTrader: 0 / 0% Ride: 91ciivic 95 Legend 92 Legend(KA7s) 87 TBird 5.0HO Map converted, 71 429 TBird ThunderJet Rep Power: 3	You can't hot tank aluminum. __________________ Only place on the net with wiring for B18a1/Auto swap. http://hondaswap.com/hybrid-ed-ef-da...ng-how-189325/

01-13-2009, 02:09 PM	#19
89' Project Civic d16a6/d16y8 "mini-me" Join Date: Mar 2007 Location: St. Catharines, Ontario, Canada Posts: 726 iTrader: 0 / 0% Ride: 1990 Honda Civic Si Rep Power: 22	huh?

01-16-2009, 01:32 PM	#21
raceinspiredrex Senior Member Join Date: Nov 2008 Age: 22 Posts: 293 iTrader: 0 / 0% Rep Power: 5	i've heard people saying you can put your head and parts in the dishwasher. like a low budget hot tank lol. what's anybody know about that? good? bad? let me know as it doesn't sound like too bad of an idea

01-16-2009, 10:46 PM	#22
89' Project Civic d16a6/d16y8 "mini-me" Join Date: Mar 2007 Location: St. Catharines, Ontario, Canada Posts: 726 iTrader: 0 / 0% Ride: 1990 Honda Civic Si Rep Power: 22	Yeah man, I don't know if I told you that one yesturday, but I'd suggest it. I just got my laundry tub water STEAMING HOT with soap and scrubbed it, I also used pipecleaners to detail it, then I blew it out with my air hose. I also repeated it like 3-4times and it was as good as new. There will be new pics of it in my thread on Monday.

01-17-2009, 10:33 AM	#23
raceinspiredrex Senior Member Join Date: Nov 2008 Age: 22 Posts: 293 iTrader: 0 / 0% Rep Power: 5	i've already had my head partially cleaned at the machine shop, i didn't have it completely tore down so it didn't clean some small areas. anyways, yeah, when my girlfriend's not at home i'm going to soak all of my parts and then i'll throw them in the dishwasher lol

01-17-2009, 12:13 PM	#24
89' Project Civic d16a6/d16y8 "mini-me" Join Date: Mar 2007 Location: St. Catharines, Ontario, Canada Posts: 726 iTrader: 0 / 0% Ride: 1990 Honda Civic Si Rep Power: 22	HeHe, good idea man, what isn't off of it?.

01-17-2009, 03:31 PM	#25
raceinspiredrex Senior Member Join Date: Nov 2008 Age: 22 Posts: 293 iTrader: 0 / 0% Rep Power: 5	well when i had it cleaned before to have it checked for cracks, i didn't pull the valves out. so once i did that, there was a bunch of crap between the valve springs and retainers. also, the bottom retainer, there was a bunch of crap between that and the seat. and i'm going to soak my valves for awhile and then run them through because there's carbon deposits caked on it. i'm going to run my springs and retainers through too

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