jpcrx

ok i tried using the search button first and i couldnt find what i was looking for so is there any way some one could tell me if i can just slap a vtec head on a dx motor or do i need machine work? also i have the head w/ vtec solenoid should i get a crx si wiring harness? and convert to MPFI? should i also get a different ECU?

Dr.Boost

So, you're DPFI as of right now and you are wanting to do a MPFI swap with a VTEC head, correct?

No machine work is necessary when swapping heads(in this situation anyways). You need to remove the oil fitting on your DX block. It's located in the center of the block near the back towards the oil filter. You can't miss it when you have the head off.

I don't believe you can just swap the SI harness over so you are better off rigging the DX harness to work. It's very easy. You can run your stock ECU and use either an RPM switch or a VAFC to engage VTEC. It's up to you.
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jpcrx

thank you i was beginning to get irritated with the search... is there a write up on the wiring? is it easy to set up on the VFAC

Dr.Boost

Here is a good write-up on the DPFI-MPFI swap.
http://www.fourthgenhatch.com/mpfi.html

You only hook one wire up from the VAFC to the VTEC solenoid to activate VTEC.
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jpcrx

now as far as the dizzy goes which one do i use? i have a d16z6 head..

PureCRXtasy

This might help a little

Z6 Mini-Me Swap

This is for a z6 on a a6 block, but should be very similar.

88crxSi

This info is all correct except one thing. You cannot use your STOCK ecu because it is a DPFI (sorry dr.boost) you'll have to use a 88-91 Si ecu (known as pm6)

The 88-91 si dist will not bolt onto that head perfectly. You might want to try and go obd1 w/ a z6 dizzy and p28 ecu (from a 92-95 ex)

Dr.Boost

Doh! I was referring to the Mini-me and not even thinking about the DPFI-MPFI swap. My bad.
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