UPDATE! Oils Seeps - GOOD!, When a Leak is not a leak -> IT IS A POOL! Options

[ctc911ctc]

70, 914-6 all original

As many of you have seen I took the engine out, throughly cleaned and installed all necessary gaskets to stop the leaks.

http://www.914world.com/bbs2/index.php?sho...3371&st=100

I did not split the case and I have a minimal case SEEP....perhaps a drop or two a day.

I ran the car yesterday and it was glorious, the engine is super smooth and after I got the shift system calibrated (a short shift kit in a 1970 rear shift setup is not a good combo) the car was awesome.

Inspected afterwords for leaks and seeps. There are a few other seeps that I am not too concerned with, however there is a leak at the top of the engine that is concerning.





I have wiped and then I have run the engine and the oil re-appears in the same place, leaking from between the Cam Box and Air Cover right above #5

The oil is coming from between the exposed Cam-Box and Air-Fin cover as seen in the second picture. The amount of oil is going to be a problem in a longer drive.....I would like to keep the engine bay as clean as possible - if possible..... (IMG:style_emoticons/default/biggrin.gif)

I see no way forward other than removing a bunch of stuff and inspecting.

Any sage advice from the more experienced Teeners ????

Thank you,

CTC911CTC

[Robarabian]

I think you remove the carbs and associated, and remove the shroud. That will tell you the "where" it is coming from. That is an interesting location. Other than a gasket that has something allowing an opening that is obvious, you will only see it from the inside.

Other option is from underneath... is it dripping down as much as it is coming up? You may be able to ID the source from under Cyl #5.

[ctc911ctc]

I think you remove the carbs and associated, and remove the shroud. That will tell you the "where" it is coming from. That is an interesting location. Other than a gasket that has something allowing an opening that is obvious, you will only see it from the inside.

Other option is from underneath... is it dripping down as much as it is coming up? You may be able to ID the source from under Cyl #5.

Hhhmmmm

Good thought, did not see anything under, but it could be making its way, will see and report

[barefoot]

MY 1980 SC had an oil leak which i could not find till till the engine was pulled.
it was the idiot light oil pressure sender !!, easy fix.

Barefoot

[fixer34]

70, 914-6 all original

As many of you have seen I took the engine out, throughly cleaned and installed all necessary gaskets to stop the leaks.

http://www.914world.com/bbs2/index.php?sho...3371&st=100

I did not split the case and I have a minimal case SEEP....perhaps a drop or two a day.

I ran the car yesterday and it was glorious, the engine is super smooth and after I got the shift system calibrated (a short shift kit in a 1970 rear shift setup is not a good combo) the car was awesome.

Inspected afterwords for leaks and seeps. There are a few other seeps that I am not too concerned with, however there is a leak at the top of the engine that is concerning.





I have wiped and then I have run the engine and the oil re-appears in the same place, leaking from between the Cam Box and Air Cover right above #5

The oil is coming from between the exposed Cam-Box and Air-Fin cover as seen in the second picture. The amount of oil is going to be a problem in a longer drive.....I would like to keep the engine bay as clean as possible - if possible..... (IMG:style_emoticons/default/biggrin.gif)

I see no way forward other than removing a bunch of stuff and inspecting.

Any sage advice from the more experienced Teeners ????

Thank you,

CTC911CTC

Are you sure it isn't leaking from the top of the valve cover? If it was inside, you should have oil drips on the heat exchanger.

I see you have a 'jumper hose' between the 4 and 6 intake ports. Two rubber caps would be better.
It also looks like you don't have the left breather hose connected to the air cleaner.

[ctc911ctc]

UPDATE

The oil is pooling here in this recess.





When the RPMS are high, the airflow drives the oil out of this recess and it 'wicks' up onto the deck of the airflow cowling and also drips down onto the valve cover.




There are no puddles underneath the car, so I do not think that the oil is 'traveling' to this point from another source (it would leak through the fins and then to the garage floor if it were traveling).

I will be taking the carb and the cowling off tonight and get pictures of what is happening.

Any thoughts from the Teener-sphere?

[ctc911ctc]

I took the carb and carb stand off, took off all of the bolts for the airflow cover and used a camera probe to look under the air guide

In this picture I am looking at the fastener hole that is above #5 a bit too the left in the picture above, here is a look under the hood.



A bit further to the right towards #6 is an indentation on the top of the cambox and there is a pool of oil



My immediate reaction was: There must be a leak from the cam box through the bolt that has caused this pool to fill.......huh, lot of oil to spiral up through the threads of a bolt that is tightly.........and then it hit me

Thunder Struck

Some of you that have read my post threaded as 914-6 Clean Up may remember that while i was filling the engine with oil, I had a funnel fail (cracked) and the oil leaked onto this exact place...........I could not see where the oil ended up, only that very little made it to the floor.

Working Theory:

I spilled the oil, it found its place under the aircover and nestled into the nice pool provided by the cam box

When the engine is running the oil is not disturbed.

When the engine is around 3k, there is enough airflow to push the oil from the cam box to flow out through the gaps around circled in the post above.

I will clean the pool, reassemble and report back.........

No Leak? Just a Pool? I call that a WIN!

[sixnotfour]

did you wet your pants,,no mom... (IMG:style_emoticons/default/beerchug.gif)

[rgalla9146]

I remember you said you had a big spill way back

[ctc911ctc]

All back together, takes 5 different wrenches to tighten the 13mm nuts, (IMG:style_emoticons/default/dry.gif)

Will run it in the morning!

Thank you teeners!

[ctc911ctc]

did you wet your pants,,no mom... (IMG:style_emoticons/default/beerchug.gif)

Kinda did (IMG:style_emoticons/default/dry.gif)