Nothing seems to be the perfect setup here. If you would like to test your IAT here is the resistance - temperature curve straight from the Helms. No matter which sensor you use, the wiring will have to be lengthened at least 12" and a provision will have to be made in your intake for the IAT sensor.or be ghetto and tape it to your firewall. An example of using the OBD2 sensor can be seen from the picture at the beginning. This picture shows one way to mount the OBD0 sensor. Therefore an OBD2 IAT sensor (with appropriate wiring plug) may be used instead of the OBD0 sensor. The error between the OBD0 and OBD2 sensors was the about the same as the error between 2 OBD0 sensors. When testing the two different style IAT sensors, I noted that both the OBD0 IAT and the OBD2 IAT measured about the same resistances at different temperatures. The IAT on the Y8 is in the intake tubing before the throttle body. The IAT on the A6 is bolted into the #1 runner on the manifold. Here is a graphical explanation of how the IACV functions.thanks to Helms. The plug on the IACV faces the tab so there is no way to plug it in. The IACV (right in picture) from a D15B7 fits, but needs to have part of the tab on the back of the manifold cut off. I also noted that the EACV (picture below) from an 89 A20A3 MPFI Accord (not positive on engine code) will work if installed upside-down (it is originally mounted on the front of the Accord manifold). I am using an IACV from a 97 F22B? SOHC Accord, this is a direct replacement. The A6 EACV is a longer style than the Y8 IACV. If your Y8 manifold didn't come with an IACV.you have some other choices. The wires may need to be extended a few inches depending on what IACV is used. Up to 91 they are referred to as an EACV, where 92+ is an IACV. Whichever you would like to call it they are the same thing. IACV/EACV (Intake or Electronic Air Control Valve): Just run a vacuum line to the stock A6 solenoid that is mounted on the firewall. You will no longer need to use this.ĭon't bother with the one from the Y8 fuel rail'sell it on ebay. When unplugged it will not trigger a CEL. Leave it hooked to your A6 manifold and unplug it from the wiring harness. Also when using a larger TB you may want to port match the manifold since it is easier while off the car. Also note that when using certain TB's there may be an extra hole in them for fast idle or such, this can be filled or not, it's the users decision. As far as I know any B-Series TB and any (USDM) 92+ D-Series TB will bolt to this manifold. Since the Y8 manifold can use the TB from the B-Series engines I have included a list of different TB's and their respective sizes. NOTE: Read through the Tips section to learn about variations to this parts list.
#D16Y8 INTAKE MANIFOLD MANUAL#
The following is a parts list for using a 96-98 D16Y8 intake manifold and a 90-91 B18A1 throttle body on a 88-91 OBD0 D16A6.ĭ16Y8 intake manifold (from manual transmission car) So if you receive an automatic version the back must be modified to accept a 2-wire IACV.unless you are doing this swap on a D16Y7 were the auto version is preferred since the Y7 already uses the 3-wire IACV. Also manual transmission version has a 2 wire IACV on the back of the manifold where the automatic tranny version has a 3-wire IACV on the throttle body. 96-98 is webbed and 99-00 has a flat top. The difference can be noticed by the top surface next to the injectors. 99-00 has air injection that will need to be plugged for this application. Sorry about the shitty picture, when I find a better one I will replace it.ĩ6-98 D16Y8 manifold differs from 99-00 D16Y8 manifold. Note the air injection on the flange.this will have to be plugged, or you will have a big vacuum leak.
#D16Y8 INTAKE MANIFOLD UPGRADE#
This manifold is best used as an upgrade for a 96-00 Civic DX, CX, or LX.anyone that came with a D16Y7. I would not recommend this.just get a manual manifold or a D16Z6 manifold. The only way to use this on a 2-wire iacv system is to finish the machining process by drilling, drilling, drilling and tapping.also a different throttlebody would have to be used. Also the bossed area where the 2-wire iacv(manual) would have mounted if they finished machining it. Note the 3-wire iacv mounted on the throttlebody. Here are some before shots to get the terminology:Īuto, Manual, Air Injection.What The Hell? Consult a Helms manual for intake manifold removal and installation instructions. Other manifold swaps will be similar in nature.
#D16Y8 INTAKE MANIFOLD INSTALL#
This is a quick write up on what's needed to install a D16Y8 intake manifold on a D16A6.
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