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> '83 3.0 with CIS in a 914, Anyone here done it? With the O2 control box?
IronHillRestorations
post Oct 21 2010, 12:08 PM
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Anyone here done a later CIS conversion with the O2 control box. I'm working with BJ on his 3.0 conversion and would like to hear from someone that's gone this route. THANKS!!
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sixnotfour
post Oct 21 2010, 05:14 PM
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if you get a harness it should be easy.
http://cgi.ebay.com/ebaymotors/PORSCHE-911...sQ5fAccessories
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Cap'n Krusty
post Oct 21 2010, 05:47 PM
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QUOTE(sixnotfour @ Oct 21 2010, 04:14 PM) *

if you get a harness it should be easy.
http://cgi.ebay.com/ebaymotors/PORSCHE-911...sQ5fAccessories


Well, that's like free ................................

BJ had best be all over THAT puppy!

The Cap'n
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SLITS
post Oct 21 2010, 05:47 PM
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I will do it someday, but I am going to eliminate the Frequency Valve and not hook up the brain or O2 sensor.

Alternate method is to change the CIS to an earlier model, like a late 2.7L Big Port.

Frequency valve is just another control pressure regulator like the WUR.

Sorry Jeff, what can you expect from a backyard, shadetree non-mechanic.
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JmuRiz
post Oct 21 2010, 06:59 PM
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QUOTE(SLITS @ Oct 21 2010, 03:47 PM) *

I will do it someday, but I am going to eliminate the Frequency Valve and not hook up the brain or O2 sensor.

Alternate method is to change the CIS to an earlier model, like a late 2.7L Big Port.

Frequency valve is just another control pressure regulator like the WUR.

Sorry Jeff, what can you expect from a backyard, shadetree non-mechanic.

Hmmmmm, wonder who has a '77 CIS setup they'd be willing to sell, haha.
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sixnotfour
post Oct 21 2010, 07:15 PM
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QUOTE

Sorry Jeff, what can you expect from a backyard, shadetree non-mechanic.

I wouldnt never run that stuff , Im with you Ron, carbs rule.


78-79 3.0 didnt have lamb control.
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jcd914
post Oct 21 2010, 11:02 PM
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QUOTE(sixnotfour @ Oct 21 2010, 06:15 PM) *


78-79 3.0 didnt have lamb control.


Yea but they did have EGR and Air Injection which the Lambda control allowed Porsche to eliminate.

An install with the Lambda control should not be much extra work and it will give you better fuel control and cost you no performance.

Jim
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Jeffs9146
post Oct 22 2010, 08:57 AM
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This is my goal!


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Ferg
post Oct 22 2010, 09:21 AM
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That's my old 2.7, I took that picture on the right when I pulled it for 3.2 upgrade, and the pic in the orange car is the guy in TX who installed it in his conversion. (IMG:style_emoticons/default/biggrin.gif)
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sixnotfour
post Oct 22 2010, 10:03 AM
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QUOTE
An install with the Lambda control should not be much extra work and it will give you better fuel control and cost you no performance.

agreed just effin with slits, 3.2 motronic, now yer talkin.
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Jeffs9146
post Oct 22 2010, 10:21 AM
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QUOTE
That's my old 2.7


What was that airbox from, and what parts did you use for the intake tube??

I have found a VW Golf box that may work but I am having trouble mounting it securely!

I have everything ready except the mounted airbox on my 3.0!
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Bee Jay
post Oct 22 2010, 11:00 AM
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QUOTE(Cap'n Krusty @ Oct 21 2010, 04:47 PM) *

QUOTE(sixnotfour @ Oct 21 2010, 04:14 PM) *

if you get a harness it should be easy.
http://cgi.ebay.com/ebaymotors/PORSCHE-911...sQ5fAccessories


Well, that's like free ................................

BJ had best be all over THAT puppy!

The Cap'n

Got it! I'll send it to Perry when I get it.
Bee Jay
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Cap'n Krusty
post Oct 22 2010, 11:10 AM
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I don't think he needs it to build you a main harness. It's a stand alone component, AFAIK.

The Cap'n
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Ferg
post Oct 22 2010, 11:13 AM
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QUOTE(Jeffs9146 @ Oct 22 2010, 08:21 AM) *

QUOTE
That's my old 2.7


What was that airbox from, and what parts did you use for the intake tube??

I have found a VW Golf box that may work but I am having trouble mounting it securely!

I have everything ready except the mounted airbox on my 3.0!



I wish I knew particulars, I was told it was an airbox from a rabbit GTI, no idea on the tube ect. I think I have a few more pics on a flash drive at my house, I will see what I can find and send them to you.
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Bee Jay
post Oct 22 2010, 11:44 AM
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QUOTE(Cap'n Krusty @ Oct 22 2010, 10:10 AM) *

I don't think he needs it to build you a main harness. It's a stand alone component, AFAIK.

The Cap'n

Well that explains something. I sent two harnesses that I got with the 3.0 to Perry and I (we) didn't know what the second one was for.
Bee Jay
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Jeffs9146
post Oct 22 2010, 12:41 PM
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(IMG:style_emoticons/default/agree.gif) The Cap'n is right the harness is a stand alone if you are keeping the injection.
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montoya 73 2.0
post Oct 22 2010, 01:56 PM
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Could you use a Aluminum Air box? I think I have an extra one.

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Bee Jay
post Oct 22 2010, 02:18 PM
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QUOTE(Jeffs9146 @ Oct 22 2010, 11:41 AM) *

(IMG:style_emoticons/default/agree.gif) The Cap'n is right the harness is a stand alone if you are keeping the injection.

But my 914-4 relay panel only has one place to plug a harness in. Do I need a 911 relay panel?
Sheesh. Will this route be cheaper than PMO's and a cam change? I am very partial to fuel injection. Tossed the carb on my Vette for aftermarked fuel injection. I love, love, love, fuel injection. But I have no experience with CIS. I'm gonna need a lot of help.
Bee Jay
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SLITS
post Oct 22 2010, 02:30 PM
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I used the 914/4 engine harness and relay board on my first conversion.

You can't use the 911 engine harness plug as it is 14 pin and the /4 relay board is 12 pin.

I took wiring diagrams for the 914 and 911 and matched function of the wires, tied them together and wella ... it worked. Had a couple of extra wires left over in the 911 part of the loom, so I wire nutted them off.

Yep, I am barbarian. No ass-dragger, pinky lifting crap for me ... jes getter done and make it run.
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Jeffs9146
post Oct 22 2010, 02:32 PM
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Yes there is a fuse panel that the harness plugs into and the engine plugs into included in the harness if you have the whole thing! Then you just have to hook up the + & - and run the O2 sensor to the exhaust.

The issue with the air box is only if you don't want to cut your trunk wall and move your lid latch! If you don't mind the cutting then it is a much easier install.

Here is a photo of the injection harness without the engine half of the harness.

QUOTE
I took wiring diagrams for the 914 and 911 and matched function of the wires, tied them together and wella ... it worked. Had a couple of extra wires left over in the 911 part of the loom, so I wire nutted them off.


Was that on a 3.0L? You still need the Ignition module and the relay from the 3.0L that the engine harness and the FI harness plug into.



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