i got a crx 1990 si i am deciding to do mini me or engine swap can someone explain mini me with z6 and difference what to use with the y8 and what do i use with the whole z6 swap and what do i have to use exactly if i use thew y8 in crx thanks appreciate the help

 

mini me is when you take a 92-95 vtec head and put it on a zc bottom end

 

i know that i want to know what to do if i want to put a y8 or z6 ecus all that stuff thanks

 

use the D16Y8 and the stock 90 Si ec,dist,intakeand harness,,its direct bolt in,all you got to do is rig up some kind of vtec controller..maybe have your stock on modded by Zdyne so it has wire for vtec..your 90 Si Distributor will bolt right up to the D16Y8 head...it wont bolt up to the D16Z..diff bolt pattern than D16Y8 or D16A6



[Modified by D-Man, 1:32 PM 11/8/2001]

 

go with y8 head/motor...newer= usually better and less miles....higher c/r, more aggressive cams, larger intake ports many improvements....also 88-91 si distributor, just bolt on...so no need to gettho spec it by cutting it as is the case with z6 heads....

if you want to use vtec ecu...then harness converter is required (nonobd to obdI) or complete rewiring to either obdI or obdII (obdI recommended)...other ways is si ecu (pg7, pm7, pm6) with external vtec switch....or a Pr3/PW0 prgram with low vtec swithc and knock sensor disabled....

 

if i use the y8 head what exactly do i have to use like the intake and ecu what ecu can i use the 92-95 ecu or what thanks

 

if you use the y8 head, you can use the stock crx si ecu (but is not really desirable as the fuel mapping is not for a vtec engine.) You can get your si ecu chipped or reprogrammed with a sohc vtec program, or you can get a one wire conversion from zdyne which will activate your vtec and adjust your fuel mapping for vtec. With these options, you will not have to adjust the ecu wiring.

Second option, spend 140 bucks on a crx si to z6 ecu wiring harness converter. Blown90hatch makes them, and plug in a z6 ecu. (92-95 ecu) You aren't going to want a y8 ecu that is obd 2, which will require extra wiring.

As for the intake manifold, you can use the stock crx si manifold or you can use the y8. The y8 flows better than a stock si, and a z6 for that matter, so there are advantages to that as well. It all depends on how much you want to spend.

Steven

 

if i use the y8 intake do i have to use throttle body injectors and what else from what i am gone use the p28 ecu if that helps you help me thanks

 

since my crx only has 37,000 miles i want to use the y8 with less miles but not sure what i got to use will use the p28 but what about the dist with the ecu and injectors thanks

 

here's the right way...use the intake,injectors and ecu from your orginal d16a6...intake bolts right on to d16y8...then have your ecu modded by zdyne so i has the vtec wire built it........much easier than guy below's suggestion..u dont mess with anything of the wire original harness or distributor..only run one wire from ecu to vtec solinoid..and your done!





[Modified by D-Man, 6:26 PM 11/9/2001]

 

if you're gonna do the swap the right way (wired for the p28)....then I'd use the z6 head b/c you're gonna have to use the z6 distributor b/c you're not gonna wanna wire for OBD2 and the z6 distributor wont properly bolt to the y8 head.

 

It's not a Z6 head on a ZC...It's a Z6 head on an A6 or A5...Don't use Y8, it'll be much more expensive and yield basically the same hp. You need correct wiring w/ ECU or an rpm switch/VTEC controller. Other than all that, it's pretty straightforward. I think you use the Z6 head gasket (which is better anyways because it's metal...)

 

you only got 37k on you crx????? WOW. i'll give you a hundred bucks for it. :D

 

i am gone use the p28 ecu the crx intake injectors and intake manifold but what about the distributor what dis for the y8 setup and p28 please help

 

ok,go so suit yourself and take the hard way..here's one last tip..those crx injectors will not work with the P28 ecu...crx si inj---Peak + hold...p28 inj=saturation...good luck


[Modified by D-Man, 4:02 AM 11/10/2001]


[Modified by D-Man, 4:02 AM 11/10/2001]

 

so what do you suggest want to use the y8 head tell what you think thanks

 

i suggested already what to use with Y8 head...six posts back

 

i know and iam but if i use the y8 head what setup do i use if i use the p28 ecu or what thanks