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 )

2 Pages V  1 2 >  
Reply to this topicStart new topic
> What is this gap?, And why would it be dripping fluid?
mjsdt914
post Sep 21 2022, 09:24 AM
Post #1


Newbie
*

Group: Members
Posts: 26
Joined: 10-August 21
From: Montana
Member No.: 25,791
Region Association: Rocky Mountains



This gap is at the front of the transmission where it mates with the engine (as seen from below).
Does it have a name?
Am I missing a plug for this hole?
Any ideas why it would be dripping fluid?
Please advise. Thanks!


Attached image(s)
Attached Image Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
930cabman
post Sep 21 2022, 09:36 AM
Post #2


Senior Member
***

Group: Members
Posts: 1,513
Joined: 12-November 20
From: Buffalo
Member No.: 24,877
Region Association: North East States



can you identify if it's engine oil or transmission oil?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
emerygt350
post Sep 21 2022, 09:39 AM
Post #3


Senior Member
***

Group: Members
Posts: 1,073
Joined: 20-July 21
From: Upstate, NY
Member No.: 25,740
Region Association: North East States



I mean, the real problem here is that you have too few leaks by the look of it. Get some road dust and half a quart of oil smeared across there and you won't even notice something like that.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mjsdt914
post Sep 21 2022, 09:42 AM
Post #4


Newbie
*

Group: Members
Posts: 26
Joined: 10-August 21
From: Montana
Member No.: 25,791
Region Association: Rocky Mountains



QUOTE(emerygt350 @ Sep 21 2022, 09:39 AM) *

I mean, the real problem here is that you have too few leaks by the look of it. Get some road dust and half a quart of oil smeared across there and you won't even notice something like that.


So true! My mistake, of course, is cleaning the undercarriage ))
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mjsdt914
post Sep 21 2022, 09:44 AM
Post #5


Newbie
*

Group: Members
Posts: 26
Joined: 10-August 21
From: Montana
Member No.: 25,791
Region Association: Rocky Mountains



QUOTE(930cabman @ Sep 21 2022, 09:36 AM) *

can you identify if it's engine oil or transmission oil?


Both engine/transmission oil recently changed so both appear very similar. I am certain it is not coolant fluid )
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mgphoto
post Sep 21 2022, 09:48 AM
Post #6


"If there is a mistake it will find me"
***

Group: Members
Posts: 1,129
Joined: 1-April 09
From: Los Angeles, CA
Member No.: 10,225
Region Association: Southern California



QUOTE(mjsdt914 @ Sep 21 2022, 08:24 AM) *

This gap is at the front of the transmission where it mates with the engine (as seen from below). Does it have a name? Any ideas why it would be dripping fluid? Please advise. Thanks!

Flywheel seal, or transmission main shaft seal, transmission oil has a very distinctive smell, open the transmission fill, put in your finger, bring out a dab of oil, smell that, use a different finger for the leak, smell that, different or the same, you have your answer.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Sep 21 2022, 10:10 AM
Post #7


Chimp Sanctuary NW. Check it out.
***************

Group: Members
Posts: 21,324
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch



Either way, you have a leak that will require removing the transmission. At a minimum. I would bite the bullet and remove the drivetrain. Beware the onset of project creep.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
930cabman
post Sep 21 2022, 12:34 PM
Post #8


Senior Member
***

Group: Members
Posts: 1,513
Joined: 12-November 20
From: Buffalo
Member No.: 24,877
Region Association: North East States



QUOTE(mgphoto @ Sep 21 2022, 09:48 AM) *

QUOTE(mjsdt914 @ Sep 21 2022, 08:24 AM) *

This gap is at the front of the transmission where it mates with the engine (as seen from below). Does it have a name? Any ideas why it would be dripping fluid? Please advise. Thanks!

Flywheel seal, or transmission main shaft seal, transmission oil has a very distinctive smell, open the transmission fill, put in your finger, bring out a dab of oil, smell that, use a different finger for the leak, smell that, different or the same, you have your answer.


Exactly, tranny oil is stinky, engine oil not so

How bad is she leaking?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
davep
post Sep 21 2022, 01:01 PM
Post #9


914 Historian
****

Group: Benefactors
Posts: 4,943
Joined: 13-October 03
From: Burford, ON, N0E 1A0
Member No.: 1,244
Region Association: Canada



Your friction disc can be ruined by oil, not to mention the potential for slipping. Did you use synthetic oil during the changes? That could had led to the problem.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mlindner
post Sep 21 2022, 03:15 PM
Post #10


Senior Member
***

Group: Members
Posts: 1,149
Joined: 11-November 11
From: Merrimac, WI
Member No.: 13,770
Region Association: Upper MidWest



How much is it dripping, I'm not sure i would do anything yet. Mark
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DRPHIL914
post Sep 21 2022, 04:06 PM
Post #11


Dr. Phil
*****

Group: Members
Posts: 5,187
Joined: 9-December 09
From: Bluffton, SC
Member No.: 11,106
Region Association: South East States





sometimes its hard to smell the trans fluid. You can add a dye, get it from autozone or other favorite local parts place along with the UV light . I had a similar issue not long ago, was not sure as i had just put the transmission back in after putting a new rear main seal in the engine, and after a couple months noticed a small drip here so i put dye in the trans fluid(suspecting this due to just putting new RMS on motor) . if you suspect oil, put the dye in the motor oil and run it for a few hours and recheck with UV light.
- as said by others, if the oil is leaking from the rear main seal it will get on the clutch and make a mess of it - when you pull it you will be able to see if it is leaking from the trans or the motor. - or both - thats possible too.

What is the history of the motor? how many miles, how long have you owned it?

the hole is there so that you can see the flywheel for timing, dont plug it.

if the car sits for long long periods or sat for years, the seals will dry , deteriorate and leak.

You can pull the transmission and leave the motor in, but i have found its easier to just pull them all as one unit.

If you have not done this, there are good how-to instructions on Pelican Parts website, with pictures.

Good luck

Phil

User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JamesM
post Sep 21 2022, 05:31 PM
Post #12


Senior Member
***

Group: Members
Posts: 1,681
Joined: 6-April 06
From: Kearns, UT
Member No.: 5,834
Region Association: Intermountain Region



QUOTE(mjsdt914 @ Sep 21 2022, 07:24 AM) *

This gap is at the front of the transmission where it mates with the engine (as seen from below).
Does it have a name?
Am I missing a plug for this hole?
Any ideas why it would be dripping fluid?
Please advise. Thanks!



Are you actually getting a drip of fluid on the ground or are you just observing the blackness on the case below the hole? If there is nothing on the ground under the car I wouldn't worry about it, above that hole is your clutch so there will always be some level of black dust existing there.

If you are getting liquid on the ground then its either the trany or engine seal there.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
fixer34
post Sep 21 2022, 08:33 PM
Post #13


Senior Member
***

Group: Members
Posts: 796
Joined: 16-September 14
From: Chicago area
Member No.: 17,908
Region Association: Upper MidWest



QUOTE(DRPHIL914 @ Sep 21 2022, 05:06 PM) *

sometimes its hard to smell the trans fluid. You can add a dye, get it from autozone or other favorite local parts place along with the UV light . I had a similar issue not long ago, was not sure as i had just put the transmission back in after putting a new rear main seal in the engine, and after a couple months noticed a small drip here so i put dye in the trans fluid(suspecting this due to just putting new RMS on motor) . if you suspect oil, put the dye in the motor oil and run it for a few hours and recheck with UV light.
- as said by others, if the oil is leaking from the rear main seal it will get on the clutch and make a mess of it - when you pull it you will be able to see if it is leaking from the trans or the motor. - or both - thats possible too.

What is the history of the motor? how many miles, how long have you owned it?

the hole is there so that you can see the flywheel for timing, dont plug it.

if the car sits for long long periods or sat for years, the seals will dry , deteriorate and leak.

You can pull the transmission and leave the motor in, but i have found its easier to just pull them all as one unit.

If you have not done this, there are good how-to instructions on Pelican Parts website, with pictures.

Good luck

Phil


"the hole is there so that you can see the flywheel for timing, dont plug it."

I've never heard of a timing window on the bottom of the engine. Just what timing mark on the flywheel do you use?
I believe it is for ventilation and a liquid drain, as you are seeing with engine/trans oil.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Dave_Darling
post Sep 22 2022, 03:01 AM
Post #14


914 Idiot
**********

Group: Members
Posts: 14,641
Joined: 9-January 03
From: Silly-con Valley, CA
Member No.: 121
Region Association: Northern California



There is often a TDC mark on the edge of the flywheel. It shows TDC for #1 and #3 through the notch on top of the transmission bellhousing, and TDC #2 and #4 through the notch on the bottom of the bellhousing shown here.

I don't know if that was its intended use, though.

--DD
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JamesM
post Sep 22 2022, 10:39 AM
Post #15


Senior Member
***

Group: Members
Posts: 1,681
Joined: 6-April 06
From: Kearns, UT
Member No.: 5,834
Region Association: Intermountain Region



QUOTE(fixer34 @ Sep 21 2022, 06:33 PM) *


"the hole is there so that you can see the flywheel for timing, dont plug it."

I've never heard of a timing window on the bottom of the engine. Just what timing mark on the flywheel do you use?
I believe it is for ventilation and a liquid drain, as you are seeing with engine/trans oil.


Sure makes valve adjustments a lot easier having a window there (IMG:style_emoticons/default/confused24.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mjsdt914
post Sep 22 2022, 01:29 PM
Post #16


Newbie
*

Group: Members
Posts: 26
Joined: 10-August 21
From: Montana
Member No.: 25,791
Region Association: Rocky Mountains



QUOTE(930cabman @ Sep 21 2022, 12:34 PM) *

QUOTE(mgphoto @ Sep 21 2022, 09:48 AM) *

QUOTE(mjsdt914 @ Sep 21 2022, 08:24 AM) *

This gap is at the front of the transmission where it mates with the engine (as seen from below). Does it have a name? Any ideas why it would be dripping fluid? Please advise. Thanks!

Flywheel seal, or transmission main shaft seal, transmission oil has a very distinctive smell, open the transmission fill, put in your finger, bring out a dab of oil, smell that, use a different finger for the leak, smell that, different or the same, you have your answer.


Exactly, tranny oil is stinky, engine oil not so

How bad is she leaking?


Not 'leaking' nor leaving a puddle ... more like 'dripping' a few drops ... noticed after I started to clean the undercarriage.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mjsdt914
post Sep 22 2022, 01:32 PM
Post #17


Newbie
*

Group: Members
Posts: 26
Joined: 10-August 21
From: Montana
Member No.: 25,791
Region Association: Rocky Mountains



QUOTE(JamesM @ Sep 21 2022, 05:31 PM) *

QUOTE(mjsdt914 @ Sep 21 2022, 07:24 AM) *

This gap is at the front of the transmission where it mates with the engine (as seen from below).
Does it have a name?
Am I missing a plug for this hole?
Any ideas why it would be dripping fluid?
Please advise. Thanks!



Are you actually getting a drip of fluid on the ground or are you just observing the blackness on the case below the hole? If there is nothing on the ground under the car I wouldn't worry about it, above that hole is your clutch so there will always be some level of black dust existing there.

If you are getting liquid on the ground then its either the trany or engine seal there.


Not 'leaking' nor leaving a puddle ... more like 'dripping' a few drops ... noticed after I started to clean the undercarriage ... not terribly concerned yet as it may be left over gunk )
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mjsdt914
post Sep 22 2022, 01:44 PM
Post #18


Newbie
*

Group: Members
Posts: 26
Joined: 10-August 21
From: Montana
Member No.: 25,791
Region Association: Rocky Mountains



QUOTE(DRPHIL914 @ Sep 21 2022, 04:06 PM) *

sometimes its hard to smell the trans fluid. You can add a dye, get it from autozone or other favorite local parts place along with the UV light . I had a similar issue not long ago, was not sure as i had just put the transmission back in after putting a new rear main seal in the engine, and after a couple months noticed a small drip here so i put dye in the trans fluid(suspecting this due to just putting new RMS on motor) . if you suspect oil, put the dye in the motor oil and run it for a few hours and recheck with UV light.
- as said by others, if the oil is leaking from the rear main seal it will get on the clutch and make a mess of it - when you pull it you will be able to see if it is leaking from the trans or the motor. - or both - thats possible too.

What is the history of the motor? how many miles, how long have you owned it?

the hole is there so that you can see the flywheel for timing, dont plug it.

if the car sits for long long periods or sat for years, the seals will dry , deteriorate and leak.

You can pull the transmission and leave the motor in, but i have found its easier to just pull them all as one unit.

If you have not done this, there are good how-to instructions on Pelican Parts website, with pictures.

Good luck

Phil


Motor rebuild ten years ago with about 15K on it now. Was stored for a few years with monthly starts and short drives. Not 'leaking' nor leaving a puddle ... more like 'dripping' a few drops ... noticed after I started to clean the undercarriage. After wiping everything off again, let it sit for a few hours...no drips. Started and idled for 30 minutes, then let sit over night...no drips. Its raining today (we don't go out in the rain). Tomorrow is a slow speed tour of the neighborhood (don't want any blow back) followed by another overnight sit to see what, if anything drips. Thanks for your input!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Van B
post Sep 22 2022, 08:35 PM
Post #19


Senior Member
***

Group: Members
Posts: 1,098
Joined: 20-October 21
From: Maryland
Member No.: 26,011
Region Association: None



100%, without a doubt, no debate, you have a leak on your rear main seal. A common wear item. If it was the transmission seal, you would see the fluid follow the path of the bell housing, not on the engine case.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
mjsdt914
post Sep 23 2022, 09:54 AM
Post #20


Newbie
*

Group: Members
Posts: 26
Joined: 10-August 21
From: Montana
Member No.: 25,791
Region Association: Rocky Mountains



QUOTE(Van B @ Sep 22 2022, 08:35 PM) *

100%, without a doubt, no debate, you have a leak on your rear main seal. A common wear item. If it was the transmission seal, you would see the fluid follow the path of the bell housing, not on the engine case.


Sounds like the voice of experience (which I lack regarding this issue). Since I have only small drips, any thoughts on trying a rear main sealer (thinking Blue Devil)? Please advise. Thanks!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

2 Pages V  1 2 >
Reply to this topicStart new topic
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 28th September 2022 - 11:30 PM