rotor flange oil leak on camshaft? How do I fix this!

Folks, I think I have an oil leak where the distributor rotor mounts to the camshaft. Is this possible? I see a pin on there, can I knock that out and then this end slides out somehow?

I just bought a new cam seal from Ricambi and it still leaks, so it looks like I wasted money already. I started the car and ran it on the left bank while the right bank camshaft end was exposed an it looked like oil wasn't coming form the camshaft seal. So is there an o-ring in this flange?

Thanks for your help! It looks like I am going to miss taking the TR to a cool upcoming cars and coffee unless this is an easier fix then I assume.
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I think it's definitely leaking from where the the arrow is pointing. How does that cap go on there? Can I pop it off? I haven't found any pictures of this assembly at all.

 

Yeah I'd like to learn more about part 25. Was there an update to this part? I see used ones are over a grand. I think I'll try some silicone or something first. I think I have to pull the camshaft to properly remove part 25.

But I wonder how they put the triangular part on the coupling. Press fit somehow?

 

thanks, I'll investigate this further.

 

cool.

Originally Posted by Rifledriver View Post
Magneti Marelli changed the plastic composition on the rotors during 4 valve production and we had nothing but trouble with insulation breakdown causing the spark being bled off into the camshaft. In typical Italian fashion instead of admitting they made the plastic cheaper everyone blamed the metal tang that held the rotor to the cam. Ferrari decided for the next generation (3.2 and TR) they would do a redesign and eliminate the metal tang and design a bolt on rotor. During dyno testing the rotors were breaking due to torsional vibration of the cams and the solidly bolted on rotors inability to deal with it. Again in typical Italian fashion the redesigned the cam extension to provide a built in vibration damper. It cured the breakage problem but in short order the rubber broke loose from the outer body and because of the hollow, pressurized cams severe oil leakage happened. It earned the TR's the name Liberian Tanker. We had jokes about TR's coming in for draining the distributor caps and check the oil. Again in typical Italian fashion the next solution was to improve the quality of the plastic and go back to solid cam extensions.


The entire affair was finally solved by doing exactly what needed to be done in the first place, improving the plastic but instead they went through redesigns, millions probably in warranty claims, many pissed off customers etc.
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found the part. Ricambi has them for $230. Part 126166

 

the cam seal keeps oil out of your distro. There is oil inside the cam itself. It looks like my coupler is a two piece. The triangular piece is press fitted into the part that goes into the cam (which is pressed into the cam itself) and there is a cap that closes off the bottom. I think oil gets past the cap, works its way between the two shafts and eventually out the brittle rubber isolator.

 

the cam gets pressurized oil inside of it. Its a hollow tube.