Engine is out, its dirty, and I've got a bunch of questions...

[MichiganMat]

I've got a few things going on here.

1. There is a mystery drain / hose connection on the underside of my CIS airbox that I believe to be the culprit of a huge oil mess. I have no idea whats supposed to attach to this thing and I've not been able to find diagrams. Its dumping oil and funk all over the "triangle of death" and down the backside of the motor & trans. Im going to replace all the seals in here, but Id like to ensure it never gets this bad again. Does anyone have a link / pic / thought of what this is and what I should do about it?




2. The engine wiring harnesses really getting old and beat up. What have people done about these old wire looms? Do I keep throwing solder and heat-shrink at it or is someone making new harnesses or replacement wires / connectors?




3. The whole engine is filthy because of this leak and from being outside. I don't know where to start. If it were back in the car I would probably have it steam-cleaned, but now that its out on the stand... I dunno. Soak it in degreaser and get scrubbing? How would you deal with this?

[tirwin]

Dennis (timmy2) rebuilds wiring harnesses. He did both of mine (engine and CIS) and his work is fantastic. Send him your old one as he reuses some of the connectors.

Take a bunch of pictures and then start taking things apart. I used Purple Power degreaser and straight Dawn liquid soap a good bit but it depends on which parts you're talking about. You need to make sure the degreaser you plan to use is safe for certain metals and finishes. Get a bulk pack of shop rags and just wipe things down first. An assortment of stiff nylon brushes in different sizes is useful. I took the tranny out into the driveway and pressure washed it too.

[timmy2]

Thanks For the kudos Tim.
Here is a link to my thread in the classifieds MichiganMat
Building SC and Mid Year Engine Harnesses

[betiller]

I am planning on doing the drop/clean/seal and SSI install this winter. I will be watching this thread closely. Good luck. We are all counting on you.

[gomezoneill]

That's the air box drain if you have oil / sludge coming there that means you have s serious blow by problem your getting oil from the oil tank breather hose. Could be bad piston rings causing excess pressure in the case.

[pond scraper]

+1 on the air box drain.. or you overfilled with oil on occasion. That fitting should have a drain hose attached 3mm or 4mm ID fuel hose worked for me and run it towards the front through a hole in the engine tin and down by the transmission and attach to the oil crossover so stuff drains to the ground

[boyt911sc]

Originally Posted by gomezoneill

That's the air box drain if you have oil / sludge coming there that means you have s serious blow by problem your getting oil from the oil tank breather hose. Could be bad piston rings causing excess pressure in the case.

Gomez,

The oil tank breather nose is connected to the backside of the air flow metering unit CIS rubber boot. It does not have the breather connected to the airbox like the earlier CIS engines. Unless you are using the older and pre-SC air boxes, you should not have oil collection at the air box even if you over filled the oil tank. Take a good look and inspect your engine/s.

Tony

[T77911S]

Originally Posted by gomezoneill

That's the air box drain if you have oil / sludge coming there that means you have s serious blow by problem your getting oil from the oil tank breather hose. Could be bad piston rings causing excess pressure in the case.

this.
unless you are over filling with oil.
i usually ran my 77s near the lower mark for oil. if i filled it, i just went thru oil faster until it got down.
i also found oil was collecting in the decel valve and throttle body.
you may consider a top end since it is out.

the engine mount usually goes on the other side.

you can still steam clean it. i usually clean it before andn after taking it out.

i would check to what cyclinders you have, alusil or nikis.
if you dont do a top end i would remove the CIS and replace EVERYTHING rubber. inlcuding the injectot sleeves.

[Flat6pac]

He's using the short hose off the oil tank neck to the side of the air box.
On the airbox drain, There is supposed to be a flex hose there that runs through a hole in the front right sheet metal and drains into a tube that bolts to the 6 mm of the oil cooler
You can resolve the problem by installing the SC black boot between the fuel dist. And the throttle body. Then you need the SC hose from the tank neck to the black boot.
You have to make the engine SC and not 75.
Bruce

[MichiganMat]

Originally Posted by Flat6pac

He's using the short hose off the oil tank neck to the side of the air box.

Yes, this is correct.

On the airbox drain, There is supposed to be a flex hose there that runs through a hole in the front right sheet metal and drains into a tube that bolts to the 6 mm of the oil cooler

Roger that, I've seen this piece in a few of my internet searches. I don't have one on this engine currently.

You can resolve the problem by installing the SC black boot between the fuel dist. And the throttle body. Then you need the SC hose from the tank neck to the black boot.
You have to make the engine SC and not 75.

Bruce

Got it (I think), I'll start searching and see what I come up with. Thanks!

[Flat6pac]

Looking at picture, I think you have a 2.7 injection system
What year 3.0 is it supposed to be, post the engine number.
Bruce

[MichiganMat]

Originally Posted by Flat6pac

Looking at picture, I think you have a 2.7 injection system
What year 3.0 is it supposed to be, post the engine number.
Bruce

Last I checked the case is a late '83, so it looks like a 3.2 with no sump plate.
The CIS has no lambda circuit, really bare-bones
I've always known that the CIS didn't match the case but I never suspected it was for a 2.7,

Ill take more pics and post up later this evening, thanks!

[gomezoneill]

Originally Posted by boyt911sc

Gomez,

The oil tank breather nose is connected to the backside of the air flow metering unit CIS rubber boot. It does not have the breather connected to the airbox like the earlier CIS engines. Unless you are using the older and pre-SC air boxes, you should not have oil collection at the air box even if you over filled the oil tank. Take a good look and inspect your engine/s.

Tony

That does not look like a sc engine to me it looks like a 77. Should ask the op though. I was guessing on the year.

[Tidybuoy]

For cleaning, I have used EasyOff Oven cleaner on all the fins and main engine. Don't leave it on for too long (only about 5 min), then rinse. Oven cleaner works miracles on engines and trans.

[boyt911sc]

Originally Posted by gomezoneill

That does not look like a sc engine to me it looks like a 77. Should ask the op though. I was guessing on the year.

The metal fuel lines misdirected my focus on the engine. The engine is a pre- '76 CIS and most likely a '75 because of the TPR and CIS boot. The engine could not be a '76 or later CIS unless someone installed the early '74-'75 CIS components.

Tony

[Matt Monson]

Originally Posted by boyt911sc

The metal fuel lines misdirected my focus on the engine. The engine is a pre- '76 CIS and most likely a '75 because of the TPR and CIS boot. The engine could not be a '76 or later CIS unless someone installed the early '74-'75 CIS components.

Tony

So are you suggesting he has a 3.0 Carrera engine? That would be pretty cool. If I had a middie with a 3.0 swap I would rather it be an early Carrera versus an SC.

What are the chances that whomever swapped in the 3.0l just used the longblock and reused his existing CIS manifold and injection?

I guess type number and serial number would tell us what the engine really is.

[MichiganMat]

Originally Posted by Matt Monson

So are you suggesting he has a 3.0 Carrera engine? That would be pretty cool. If I had a middie with a 3.0 swap I would rather it be an early Carrera versus an SC.

What are the chances that whomever swapped in the 3.0l just used the longblock and reused his existing CIS manifold and injection?

I guess type number and serial number would tell us what the engine really is.

My engine number: *64D4094*

I was worried, but it looks like I have what you suspected. The long block is an '83 with a older CIS on it. The chassis I bought this engine in was a '74 Targa that had been in an accident and was repaired. I wonder if a previous owner put his '74 CIS on the '83 long block and installed it.

[boyt911sc]

Originally Posted by Matt Monson

So are you suggesting he has a 3.0 Carrera engine? That would be pretty cool. If I had a middie with a 3.0 swap I would rather it be an early Carrera versus an SC.

What are the chances that whomever swapped in the 3.0l just used the longblock and reused his existing CIS manifold and injection?

I guess type number and serial number would tell us what the engine really is.

Matt,

I have no idea what the engine really was because it was almost impossible identifying the crankcase (motor) by the picture alone. What I could see from the picture posted was that the CIS components used were from a pre-'76 like a '74 - '75 CIS based from the WUR, TPR, fuel return line, CIS boot, etc.

However, the OP later posted the engine number as 64Dxxxx and that came from an '83 USA car.

Tony

[timmy2]

'83 US version small intake valve long block with a '74 intake system in a '74 car. Sounds like a decent upgrade to me.

[Tremelune]

In for the after pics...