[WannaBe]

How do i turn a SPFI head into a MPFI? do i just get a different head or do i need to do anything special?

 

[baker_jeff]

What car model and engine?

 

[WannaBe]

It's an '88 DX with stock engine. I'm looking at just replacing the head and it was recommended that if the block is still good to make it a MPFI....also, where is a good place to shop for heads? I am SO new to all of this it's frustrating!!

 

[downest]

You don't need a full head if it's in good shape, just an A6 cam. For the MPFI swap you need a MPFI intake manifold, ECU, injectors, distributor, resistor box, and a soldering iron.

 

[jmart]

Is there any difference between the head and valves itself on the d15 and the d16? Is it the same head if you just drop the a6 cam in?

 

[downest]

Yes, same casting, different cam.

 

[2point2]

For the MPFI swap you need a MPFI intake manifold, ECU, injectors, distributor, resistor box, and a soldering iron.

Exactly right!

The wiring in the hardest part, it's very intimidating for some people but if you follow the instructions and ask questions you'll be fine.

Here:
http://tech.hybridgarage.com/tech/4gtec ... wiring.htm
This is for a ZC, but the only difference is that the Cylinder Position Sensor wires, which are the same colours, are external on a ZC instead of being on the main distributer plug - if you're confused, don't worry.. it will make sense when you do the conversion

and here:
http://www.hondata.com/techwiringpw0.html
This link is a nice reference to the way the pins are laid out, colours and functions.

and finally:
http://www.honda-tech.com/zerothread?id=1191491
This link shows you how to remove pins from the ECU plugs. Cut off some ECU plugs at the local auto wreckers leaving plenty of wire. This takes some practice.

Use solder and good quality heat shrink for all connections(the good quality stuff looks dull vs shiny) I like to double up on the heat shrink when two connections rub against eachother. Most importantly, take your time because it will prevent huge headaches down the road.

Good luck, you will learn a lot doing this conversion. :wink:

 

[WannaBe]

Thank you everyone for your feedback and help!

 

[Blackbird_Pilot]

For the MPFI swap you need a MPFI intake manifold, ECU, injectors, distributor, resistor box, and a soldering iron.

Exactly right!

The wiring in the hardest part, it's very intimidating for some people but if you follow the instructions and ask questions you'll be fine.

Here:
http://tech.hybridgarage.com/tech/4gtec ... wiring.htm
This is for a ZC, but the only difference is that the Cylinder Position Sensor wires, which are the same colours, are external on a ZC instead of being on the main distributer plug - if you're confused, don't worry.. it will make sense when you do the conversion

and here:
http://www.hondata.com/techwiringpw0.html
This link is a nice reference to the way the pins are laid out, colours and functions.

and finally:
http://www.honda-tech.com/zerothread?id=1191491
This link shows you how to remove pins from the ECU plugs. Cut off some ECU plugs at the local auto wreckers leaving plenty of wire. This takes some practice.

Use solder and good quality heat shrink for all connections(the good quality stuff looks dull vs shiny) I like to double up on the heat shrink when two connections rub against eachother. Most importantly, take your time because it will prevent huge headaches down the road.

Good luck, you will learn a lot doing this conversion. :wink:

I have an HF and a DX. I'm looking at swaping the FI's around to keep the DX but have MPFI. If this just a simple swap everything over or is there specific parts I'll need from other models?
Thanks
BP