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Old 02-25-2014, 11:46 PM
dukefan261's Avatar
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Default Vtec head on a d15b2 block

Okay so I just traded my b18 head for a jdm d15b vtec head. Would I be able to do a Frankenstein swap on my d15b2 motor? It's running dpfi what all is involved with switching that to mpfi as I have a y8 intake mani? And also what all is involved with running vtec? Any and all help is very appreciated as I am new to the vtec swapping game. Thanks in advance
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Old 03-05-2014, 01:37 AM
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I don't remember if you can run the VTEC head on the B2 block for certain. I'm thinking you can, but you have to modify the oil passage in the block, something like that, I really can't remember. I'm sure you can find it on Honda Tech though.

As far as DPFI -> MPFI, there's a lot of stuff on that, (Honda Tech again) and its basically getting the right ecu, swapping a couple wires around on the plugs, adding a couple wires for new injectors, and adding a couple wires for an extra sensor in the distributor. I recommend you DON'T cut up all the wires and re-solder them, its so much cleaner and easier if you learn how to De-pin the wires from the ecu plugs, and from the distributor plugs, and swap out the distributor plugs on the harness with the ones that match the Distributor you're using. It's really a WHOLE shit ton of things to keep track of, esp since you're basically doing an MPFI swap, a VTEC swap (more new wires!), AND an OBD1 conversion (I'm assuming because i think the JDM D15B runs an OBD1 ECU) at the same time, and everywhere you look, people will tell you a different way to do it.

Just research the HELL out of it, and print everything out and read over it a hundred times. That's what I did, and once I was comfortable that I knew what I needed to do, I knocked it out. Not that bad, just have to be sure you're prepared.

Another thing that helps is to make little labels for the ends of all the wires so you remember what's supposed to go where! Masking tape and a marker will save your ass!
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Old 01-07-2020, 04:12 AM
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