need help identifying parts in motor install

[jmitro]

I purchased a 78 SC roller, and purchased an 83 SC motor. Trying to make sense of the different hoses and tubes. I've looked through the parts diagrams here on pelican but they are a little unclear. I have identified some of the hoses, which I have labeled in the photos. My questions are above the photos:

In the first image, #1 is plugged. #2 and 3 I'm guessing go to the oil filler and breather listed in the following photo:







This black wire was left dangling off the motor. Any idea where it goes?




The below photos are fuel hookups. Problem is that I have two connections on the chassis, plus what appears to be a vacuum hose with an open vacuum line, and three fuel lines on the motor. The stock connections have been removed from the chassis, so it makes ID more difficult.








Finally, two vacuum plugs that are unaccounted for. There is a small vacuum line in the back of the engine bay next to the AC lines.....is this vacuum for brake booster? Does it connect here on the small nipple?



Thanks for the help

[Scott R]

First Image:

#1 is nothing, plugged if you like.
#2 Oil tank from the breather
#3 Oil tank from the intake boot

The relay in the third picture? That's anyone's guess it's not factory. You're going to have to track it down.

Picture #4

#3 Fuel line return to the accumulator
#2 brake booster line

Picture #5

#2 Brake booster again
#1 Fuel supply line

Picture #6

Can you zoom out a bit on this and pan left?

"unknown" is the brake booster line with a "t" installed in it for who knows what
"fuel feed" is most likely the "fuel feed" However it should be a steel hard line to a rubber line that connects to the fuel supply on the CIS.


Picture #7

The vacuum port on the throttle body goes to the distributor, it's the advance line I believe with the retard going to the rear of the throttle body.

The second connection is nothing, it's just a vent of some sort, nothing gets connected to it.

Also, on the picture with the "crankcase" tag, pull both of those hoses and replace them with the connections from the first picture.

[Bob Kontak]

Last pic vacuum line is for the WUR.
Last pic bigger port is for the carbon canister line.

Second pic small line is the carbon canister line from the fuel expansion tank in teh driver's inner fender

Pic #4 - Fuel line #3 on my 81 appears to connect to the top of my fuel filter. The accumulator line has a 90 degree elbow.

Pic 6 as Scott R says is missing real estate.

[Bob Kontak]

I need to get you some pics.

[jmitro]

great, thank you very much guys.

the car had a 2.7 motor in it prior to my purchase, so maybe the fuel lines were changed to accomodate a different motor. I know the fuel feed is correct, as it flows fuel with the ignition key turned on and fuel pump relay in. I still need to locate the fuel pump and filter.

Oh, also...I've got the vacuum lines for the distributor accounted for. There are 4 small nipples on the intake, so I assume if all the vacuum lines are accounted for, I can just plug this nipple shown in the last photo above?

Here's a couple other photos of the left hand side of engine bay.

[Bob Kontak]

I think the fat one is the brake booster

[Bob Kontak]

I thin the fuel line with the brass fitting is the fuel return line. Will get some pics out here tomorrow

[Flat6pac]

Looks like the 78 had carbs in it previous life...
Bruce

[jmitro]

Originally Posted by Bob Kontak

I thin the fuel line with the brass fitting is the fuel return line. Will get some pics out here tomorrow

would it not be the fuel feed line if fuel flows from this line when power is given to the fuel pump?

[Bob Kontak]

Yes it would be.

However, I am looking at my 81 SC which is stock. It has a feed line and a return line. Given Flat6pac's hypothesis that there were carbs in the body's history that may be why we are only seeing one line in yours. I just made an assumption based on what I thought would be present in the 78.

Going to get pics now.

[Bob Kontak]

I will have several pics and I will post them one or two at a time to keep things straight in my head.

Here is your original #5 photo reworked and one view of my hoses.

Wires coming out of firewall are from my MSD ignition box under the drivers seat.

[Bob Kontak]

Two more from different view points

[Bob Kontak]

Carbon canister. Side with two ports faces front of car. Skinny line is where fumes from fuel expansion tank in driver's front fender enter canister. Fat line wraps across back of engine and into the open port on the driver's side of the air box (see your last pic in original post)



Oil breather lines



Vacuum line to warm up regulator

[Bob Kontak]

I will get a pic of where my distributor vacuum lines tie into the throttle body to end any confusion. I also want to research and make sure the "return line" I am talking about IS the return line and not another line which has a function that I do not understand. Stay tuned.

Carbs require a lower pressure fuel pump. My pump is under the steel pan that protects the steering rack. Pretty easy to remove for viewing.

Perhaps the PO modified the fuel delivery system for carbs and you are going to have to set that straight for CIS. Here is your pic with some questions / comments.

[Bob Kontak]

Here are the vacuum lines

[jmitro]

Great, thanks a lot Bob. that helps tremendously.

I do believe the previous motor had carbs. And strangely, the U-shaped fuel line on the chassis seems like it is plugged with something, so maybe carbs would explain why that line is plugged?

I'll check my fuel pump.
The bronze colored cylinder next to your fuel filter is the accumulator, correct?

I believe you cleared up the one remaining vacuum nipple, which goes to the warm up regulator.

thanks again!!


One more question.....the 12 pin connector in the wiring harness adjacent to the fuel lines....any idea what this is for?

[Gunter]

Good stuff.

By 12 pin connector, you may be referring to the 14 pin main connector going to the rear fuse/realy panel on the left inner fender side? If so, it needs to be connected into the receptacle there, use a little Vaseline on the pins.

If you are planning to use stock CIS with Lambda, you'll need the Lambda brain (ECU) that would normally be found under the pass seat in a US SC '80-'83 and the power for the relay on the ECU comes from fuse #18; very important or the Frequency Valve will not operate.

Planning to use OX sensor? CAT?

CIS needs a fuel pump with 5 bar (70 PSI) pressure.

Ignition distibutor for US SC's '80-'83 has 2 vacuum lines: Advance goes to the rear of TB and retard goes to the front of TB.

You might consider removing the complete Lambda CIS and replace it with a non-Lambda CIS from a US '78-'79 SC or Euro '78-'83 SC; much simpler to work with.

If you don't use the A/C, remove the brackets etc.

[Bob Kontak]

Originally Posted by jmitro

The bronze colored cylinder next to your fuel filter is the accumulator, correct?

Yes

On my car there is a 12 pin female connector in the back firewall to the right (facing front from rear) of the driver's shock mounting. The 14 pin is in the far rear back corner as Gunter says.

Double checked and the wire set running by the fuel lines is for the 12 pin and 14 pin wires come over from the engine.

[jmitro]

Gunter, I was referring to the 12 pin that Bob mentions above. I was not planning on using an O2 sensor, I was told my 78 chassis did not originally have provisions for it?

the lambda ECU, etc....I don't believe I have any of that. I'll have to check with the motor seller.

thanks again for all the help. Looks like I've got some work to do.

[jmitro]

Jeez, the fuel lines are confusing, given the non-stock fuel lines on the chassis. After studying your photos and pelican's diagram here:




Questions are:
1. the fuel accumulator has three ports, correct? top ports 1 and 2 are for fuel feed in from fuel tank, and fuel feed out to the filter, and the bottom port is for fuel return via the return line, correct?

2. in the pelican photo, #6 is the accumulator, and #8 is the filter, correct?
3. also in the photo, lines 1 and 2 represent fuel feed in to the accumulator, correct?
4. the outlet of the fuel filter #16 goes to fuel feed line to the motor, correct?
5. finally, the fuel return line in the motor photos by Bob.........I believe this connects to the U-shaped hard line on my chassis that Bob has labeled as possibly going to the accumulator. But I believe my fuel feed line goes to the accumulator, correct?

6. sorry, one more question....where is the carbon cannister located? I find the expansion tank but not the cannister. It has only two outlets?