Oil leak from Rocker (Tappet) Cover - Rennlist - Porsche Discussion Forums

Notices

Oil leak from Rocker (Tappet) Cover

Old 10-12-2018, 12:00 AM
  #1  
Ed Holly
New User
Thread Starter
 
Join Date: Oct 2018
Posts: 2
Default Oil leak from Rocker (Tappet) Cover

I have had an annoying leak from one of the tappet covers and this was exacerbated when I last redid the tappets. Found the culprit, there is a plate welded onto the outside of the cover and an opening on the inside where a strengthening pressed web is. Seems someone in their wisdom thought they would fix it by poking some silicon down there, probably worked ok for a while but in recent times of my 3 years of ownership of this Australian delivered 65 912, it has dripped a bit onto the No.1 exhaust. When a new gasket didn't fix it further investigation revealed the cause. It is now filled with solder and shouldn't be a problem in the future, but can anyone tell me why there was a hole there in the first place ? It seems to have had a collar around it which I prized off with a screw-driver as though it was once a breather ? It is not the original engine with the car, it is the same type number, maybe the covers were off a 356 ? 2nd photo shows the flange piece prized off.

This particular cover also had a marked bow in the outer lip of the sealing land which meant that it lost about about 1.5 mm of "push" against the engine mating surface. Not easy to fix, thought about it for a while and ended up placing on some softish wood blocks and with another piece of wood in the middle of the bend hit downwards a bit at a time. Eventually the flange went straight and no damage done, thought this would fix the leak but the hole described above put paid to that.




I am new to this forum, also own an Aussie delivered '69 911 and I have to say I enjoy both equally, in fact the 912 is a terrific mid 60's car.

Ed
Ed Holly is offline  
Old 10-12-2018, 12:03 AM
  #2  
Ed Holly
New User
Thread Starter
 
Join Date: Oct 2018
Posts: 2
Default

Thought I'd better put a photo in of the car, the 912 is the yellow one.

Ed Holly is offline  


Thread Tools
Search this Thread

Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: