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yes - Y7 head on the B7 block will raise the compression ratio to around 10:1 yes - you can use either transmisson

any codes showing on the ECU?

was it running and just quit or what? the correct ECU is PM7 - you said you replaced the distributor - did you get the spark plug wires in the correct locations on the distributor? no. 1 is at top, no. 3 is at front toward radiator, no. 4 is at bottom and no. 2 is at rear toward firewall

you do need some way to control the ignition timing - we tried using the 86-87 Integra D16A1 vacuum advance distributor but it didn't work very well - couldn't get enough advance

you will need to redo the intake manifold as the SOHC intake won't bolt onto the DOHC ZC head

how big are those carbs?

the 1st gen CRX transmission will not bolt to the D16A6 engine - not even close also, none of the mounts will work

fuel cut-off on the P2P should be 7000 rpm P2E is not a VTEC ECU and will not allow the engine to run in VTEC mode

LX sedan is DPFI - 90 and 91 EX sedans are MPFI D16A6

the P28, being a VTEC ECU, will not work well - if you can't find the P29, use the P06, chipped with P29 fuel and ignition maps

factory OBD1 DOHC ZC ECU is the P29

you need to use the engine wiring harness that was on your D16A6 and make any necessary wiring changes to it - engine wiring harnesses are not interchangeable

he must be somewhere other than the U.S.A. - to put a fuel injected VTEC engine in it would be a wiring and fuel nightmare

is there a question there?

looks like you have a SOHC ZC that was converted to Dual Point Fuel Injection using the original intake manifold that was on the original D15B2 engine - the distributor on the DPFI engine should not have a round 7-wire connector - it should have a rectangular 5 wire connector, as the DPFI...

I believe you will find that the D15Z1 head on the non-VTEC D15B will result in a compression ratio of about 12.5:1 - the JDM non-VTEC D15B is basically the same engines as the USDM D15B7

actually, my wiring guide is correct if you are using the OEM Honda distributor - if you have an aftermarket distributor, a lot of them have the Blue/Green and Blue/Yellow wires swapped inside the distributor with the B/G going to where the B/Y should be and the B/Y going to where the B/G should...

To use the CRX Si engine harness with the CRX HF chassis harness, see instructions below:

if it is not the same, it is from the wrong model

which axles you use is determined by the transmission and front hubs - has nothing to do with the engine - with the stock transmission and stock front hubs, you use the stock axles