Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
> Oil leak frustration. Expert advise needed
3stewarts
post Apr 14 2019, 05:03 PM
Post #1


Newbie
*

Group: Members
Posts: 13
Joined: 30-March 12
From: Kansas City MO
Member No.: 14,322
Region Association: None



I have an oil leak positively identified with the use of leak tracer dye and UV light dead center on top of the oil pump. I have installed a new 36 mm type one oil pump modified for the type 4. I also applied a generous amount of my favorite gasket sealer yet the leak remains. It will only leak with the engine running which indicates to me it is under pressure. My theory is that the case halves may not have had enough sealer on them during engine asssembly.
My question then is how do I seal this thing without splitting the case?
Can I apply sealant to the circumference of the oil pump?

Attached Image

Any thoughts or experiences appreciated.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bleyseng
post Apr 14 2019, 05:24 PM
Post #2


Aircooled Baby!
**********

Group: Members
Posts: 12,495
Joined: 27-December 02
From: Seattle
Member No.: 24
Region Association: Pacific Northwest



A 36mm oil pump, sheesh that's pretty big. Too much pressure?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
3stewarts
post Apr 14 2019, 05:29 PM
Post #3


Newbie
*

Group: Members
Posts: 13
Joined: 30-March 12
From: Kansas City MO
Member No.: 14,322
Region Association: None



QUOTE(Bleyseng @ Apr 14 2019, 06:24 PM) *

A 36mm oil pump, sheesh that's pretty big. Too much pressure?


Maybe? Purchased from the type 4 store. Only option.

User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Apr 14 2019, 06:24 PM
Post #4


that's what I do!
***************

Group: Members
Posts: 17,688
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada



QUOTE(3stewarts @ Apr 14 2019, 07:29 PM) *

QUOTE(Bleyseng @ Apr 14 2019, 06:24 PM) *

A 36mm oil pump, sheesh that's pretty big. Too much pressure?


Maybe? Purchased from the type 4 store. Only option.

Really? (IMG:style_emoticons/default/blink.gif)

That must be leaking around the pump pretty good!
Why it's the wrong pump to use.

I use the shadek pumps, 26mm on my big T4, 30mm needs a pressure relief cover.
Shadeks quality is good except for the case hole size, I now run a thin bead of yamabond inside the case hole past the galley holes. Real thin bead because most of it will be squeezed into the case, a small amount of yamabond will stay put.
Yamabond, hondabond, threebond basically the same,the gray stuff all made by Threebond, IIRC Threebond 1104 NEO

You could try cleaning it up good, including inside the hole as best you can, and a thin bead of yamabond inside and out of the case in this area. Only put the yamabond where you're 100% positive it's 100% clean and degreased.

If that doesn't work nothing short of splitting the case will work.
If you split the case I'd inspect that area.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
3stewarts
post Apr 14 2019, 06:44 PM
Post #5


Newbie
*

Group: Members
Posts: 13
Joined: 30-March 12
From: Kansas City MO
Member No.: 14,322
Region Association: None



QUOTE(Mark Henry @ Apr 14 2019, 07:24 PM) *

QUOTE(3stewarts @ Apr 14 2019, 07:29 PM) *

QUOTE(Bleyseng @ Apr 14 2019, 06:24 PM) *

A 36mm oil pump, sheesh that's pretty big. Too much pressure?


Maybe? Purchased from the type 4 store. Only option.

Really? (IMG:style_emoticons/default/blink.gif)

That must be leaking around the pump pretty good!
Why it's the wrong pump to use.

I use the shadek pumps, 26mm on my big T4, 30mm needs a pressure relief cover.
Shadeks quality is good except for the case hole size, I now run a thin bead of yamabond inside the case hole past the galley holes. Real thin bead because most of it will be squeezed into the case, a small amount of yamabond will stay put.
Yamabond, hondabond, threebond basically the same,the gray stuff all made by Threebond, IIRC Threebond 1104 NEO

You could try cleaning it up good, including inside the hole as best you can, and a thin bead of yamabond inside and out of the case in this area. Only put the yamabond where you're 100% positive it's 100% clean and degreased.

If that doesn't work nothing short of splitting the case will work.
If you split the case I'd inspect that area.


Thanks, Mark, I’ll try that.
I suppose I can find this yamabond and the local auto parts store?

Unless I overlooked it the 30 mm oil pump was my only option at the type4 store online.
I did multiple searches and read many threads suggesting the 26 mm pump. I was ina bit of a hurry so I went with the 30.

Reminds me of an old saying “There is never enough time to do it right but always enough time to do it over”
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
3stewarts
post Apr 14 2019, 06:49 PM
Post #6


Newbie
*

Group: Members
Posts: 13
Joined: 30-March 12
From: Kansas City MO
Member No.: 14,322
Region Association: None



I just realized I had said 36 mm when it was really 30mm. (IMG:style_emoticons/default/wacko.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
porschetub
post Apr 14 2019, 06:50 PM
Post #7


Advanced Member
****

Group: Members
Posts: 2,871
Joined: 25-July 15
From: New Zealand
Member No.: 18,995
Region Association: None



QUOTE(3stewarts @ Apr 15 2019, 11:03 AM) *

I have an oil leak positively identified with the use of leak tracer dye and UV light dead center on top of the oil pump. I have installed a new 36 mm type one oil pump modified for the type 4. I also applied a generous amount of my favorite gasket sealer yet the leak remains. It will only leak with the engine running which indicates to me it is under pressure. My theory is that the case halves may not have had enough sealer on them during engine asssembly.
My question then is how do I seal this thing without splitting the case?
Can I apply sealant to the circumference of the oil pump?

Attached Image

Any thoughts or experiences appreciated.


Besides the wrong pump,sealing face on the case looks pretty dirty...just saying.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
3stewarts
post Apr 14 2019, 07:26 PM
Post #8


Newbie
*

Group: Members
Posts: 13
Joined: 30-March 12
From: Kansas City MO
Member No.: 14,322
Region Association: None



Yeah, I didn’t clean all the old sealer off before I took the picture.
It’ll be clean before reassembly.
I’ll try and remove the studs and flatten it as best I can.
Fortunately this is in a 912e so it’s pretty easy to get to!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Apr 15 2019, 07:34 AM
Post #9


that's what I do!
***************

Group: Members
Posts: 17,688
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada



You're going to have to dump that oil. clean, clean, clean!

Yamabond you have to go to a Yamaha bike dealer, amazon or evilbay for Threebond 1104 neo.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
3stewarts
post Apr 17 2019, 07:57 PM
Post #10


Newbie
*

Group: Members
Posts: 13
Joined: 30-March 12
From: Kansas City MO
Member No.: 14,322
Region Association: None



QUOTE(Mark Henry @ Apr 15 2019, 08:34 AM) *

You're going to have to dump that oil. clean, clean, clean!

Yamabond you have to go to a Yamaha bike dealer, amazon or evilbay for Threebond 1104 neo.


Thanks for you help Mark. One more question:
When using “yamabond” sealant, do you still put the gasket in place?
Seems like ya wouldn’t, just want to be sure.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 19th April 2019 - 12:20 PM