Need help finding the right Oil Line to Camshaft Carrier for an 83 Cab

[mhackney]

My car is a 1083 911 SC Cabriolet. Engine #64D3872 (Carrera case) original to the car. Note that it does not have the pressure-fed tensioners (that is an upgrade I plan to do soon). The 83 Cabs were a transitional model - last of the SCs, first model cabriolet. My car is WP0EA091XDS170830 which is a bit more than 1/2 way through the 1781 US cars produced. At some point in the production run the "new" Carrera engine case was used on these cars, the earlier cars had the old style case. But the new Carrera cased engines did not have the Carrera pressure fed tensioners.

For now, I simply need to replace the left side oil line as it is leaking like a sieve. The right side has a little old around the metal-rubber tube fitting so I plan to replace that one too.

Now my problem - I don't know what the correct parts are! Our host shows part 901-107-347-02 (left side) but states through engine 64D3716. It looks like the correct part for my engine though. (right side is part #901-107-348-01 on the same page).

Scrolling down the page, you'll find part #930-107-347-14 (left side) for engined updated to the pressurized chain tensioners. I don't have those, so this is not the correct part.

Thanks,
Michael

[turbo owner]

Porsche only offers the lines for pressure fed tensioner, cohline is the OEM provider and sells the ones you want. Call the toll free number and they will help.

[mhackney]

Understood. The lines I linked to in my post are Cohline. I'll try to track down their number, thanks.

[mhackney]

After a quick search, I can't find a US # to call. There is a US email address but I don't put a lot of faith in timely responses from email addresses. Does anyone happen to have a US #?

[javadog]

I probably have a pair of original lines. I'll have a look.

JR

[mhackney]

The question is, what's the part #s for these parts? I have the PET and that does not clarify things either. They have an engine # break at 64D3716 with part #930 107 347 03 but this appears to be the hose with the T connector for the oil pipe for the pressure fed tensioners.

I suspect the parts I listed in my first post are correct and the description for engines 64D3716 is not correct for this transitional model.

[turbo owner]

Originally Posted by mhackney

After a quick search, I can't find a US # to call. There is a US email address but I don't put a lot of faith in timely responses from email addresses. Does anyone happen to have a US #?

Pelicans toll free number not cohline

[javadog]

Can't help you with the part number. My guess is you are on the right track with the part number you listed above.

These are the original lines from my '83SC. For what it's worth, it was an older style cased-engine.

[mhackney]

Everyone is befuddled by this (I called 2 Porsche parts suppliers). The best we can tell is that my hypothesis is correct and that these transitional cars actually used the earlier parts. Of course all of this will be mute when I upgrade to the pressure fed tensioners, but I can't do that for a few more months. Meanwhile, I ordered the parts I mention in the first post. It will be here this week so I'll report back when I do the install.

Meanwhile, are any special tools needed to do this? The left side part will require removing some stuff to get to but I understand it isn;t necessary to remove the distributor, just the cap. Any special wrenches required?

[Flat6pac]

Here is your number
901 107 347 01
Bruce

[mhackney]

Well, the repair is complete but not without gnashing of teeth. Firstly, the left side part is indeed #901-107-347-02 (left side) and the right side is part #901-107-348-01 - but more on the below.

I ordered Porsche parts. The first surprise was that neither line had the ferrule and nut installed - it was bare metal pipe. All the photos and drawings show the parts with these installed. It would be odd that I got 2 "defects". Of course, I did not realize this until it was "too late". Here's the story...

I started with the left side as it is supposed to be the more difficult due to the fitting behind the distributor. Simply removing the black plastic cowl, coil and distributor cap gives good access to the fitting:



First, note that brown wire coming from the distributor - be very careful not to break it! I understand it is a major pain if you do. The fitting could be reached and removed with a 14 mm crowfoot socket, I got a set of Craftsmen for the project. Worked like a charm.

As soon as I removed that fitting, this happened:



The rubber tube cracked like a pretzel. This part looks like it might be an original 32 year old hose. The photo shows it next to the new one (part # above). After the hose was off, I snapped it again to see how easy it was. I was living on borrowed time with this hose, no wonder it was leaking like a sieve.

It was on the bench when this photo was taken that I realized the new part was missing the ferrule and nut. My friend had a set of new oil lines that were "recalled". I figured out how to press off the ferrules and press them on my hoses. That worked like a charm. Took 10 minutes to reinstall.

We checked the hose for leaks by starting the engine before moving on to the right side.

The right side came apart easily - no crowfoot required. This hose had a dirty old Prosche label on it and was an obvious replacement. The rubber was still soft and flexible. On the bench I realized that the metal tube end was a little over 1 cm too long.



When I attempted to install it, a bolt standoff on the engine case interferes with it. Bummer! The rubber hose was about 1 cm longer too. So a new plan was formulated. I installed the nut and ferrule and this time pressed the ferrule down to where it should be. We then cut off the extended tube and filed and demurred the end. This gave me *just enough* clearance to install it. Fitting the banjo end was a major pain though because of the extra length of the rubber tube. It took many attempts to finally get it on. Once installed, things looked good with no leaks.

So, I am not sure if all the Porsche parts come without the ferrules and nuts, the Coline replacements appear to come with them. I am also not sure of the right side part - I was able to make it fit but perhaps the required part is NLA.

This repair should be fine. I intend to do the chain tensioned update - which uses completely different hoses.

It was an eventful morning of problem solving that had a happy ending.