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I think I found the source of my oil leak... Thanks to Mick!
https://ausmini.com/forums/viewtopic.php?f=2&t=88941		 Page 1 of 2
Author:  jb007 [ Sun Mar 22, 2015 8:40 pm ]
Post subject:  I think I found the source of my oil leak... Thanks to Mick!
As subject says, I've had a very small oil leak for a while now... A mechanic who did my RWC for my club plates thought it was a leaking timing cover seal, so since I had a vernier duplex timing gear to fit, I replaced the gaskets and also the front timing cover oil seal.

Long story short, still leaked.

Was reading this thread http://www.ausmini.com/forums/viewtopic.php?t=44722about venting on the 1100 & 1275cc engines when I read this comment from Mick:
Mick wrote:
You have three choices, the primary gear cover as suggested, a vented A+ timing gear cover, or the mechanical fuel pump apperture.

Get him to chase the oil leak down as well...some head gaskets will let oil dribble out from the rear corner behind the thermostat...it all ends up down the bottom and looks for all the world like a timing cover leak..


I have the A+ timing cover breather joining in a Y piece from the clutch cover breather into the side of the HIF44... so I guess that should be adequate for ventilation control?

Embarrassingly I had not looked at the corner of the head behind the thermostat, as rightly or wrongly I assumed it was still coming from timing cover area. Guess what? Just had a look at the back and it is coming from the said spot!

The head had a new BK450 head gasket on it a while ago. I have not re-torqued the head since changing it :oops: . Do I re-torque it now, or does the head come of again?

Mick, thanks again for your advice on this forum.... it goes to show that a comment you made in 2008, has helped me in 2015!

Jim
Author:  simon k [ Sun Mar 22, 2015 9:28 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
hmmm, I have a similar leak, better take a look!
Author:  drmini in aust [ Mon Mar 23, 2015 7:27 am ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
Retorque it, cold.
If that doesn't fix it, then replace the gasket.
I had a BK450 do leak there a year or two ago on Minidave's rally motor, a new BK450 gasket fixed it.
I think there were some gaskets produced then with a dodgy copper seal ring there.
Author:  jb007 [ Mon Mar 23, 2015 9:17 am ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
Thanks Doc, I'll re-torque it.
Author:  Mick [ Mon Mar 23, 2015 12:31 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
No problem? :P
Author:  jb007 [ Mon Mar 23, 2015 2:26 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
No thank you. :-)
Author:  Garagedefend [ Mon Mar 23, 2015 2:39 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
I have a leak that I need to source as well! lol maybe this is it
Author:  aaron [ Mon Mar 23, 2015 5:34 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
Mick can come and fix my oil leak if he's that good. :D
Author:  Mick [ Mon Mar 23, 2015 5:39 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
I really must have been on top of my game in 2008 to forecast an oil leak on Jim's car in 2015....

Thinking about it, that's not such a big claim after all...I could forecast an oil leak on anyone's mini in 2022. Oil leaks are an inevitable end for minis.
Author:  Morris 1100 [ Mon Mar 23, 2015 5:46 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
Remember I used to forecast head gasket failures back then.
Author:  Mick [ Mon Mar 23, 2015 5:48 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
I should go back and edit in a message to my past self some lotto numbers for 2015..
Author:  jb007 [ Mon Mar 23, 2015 6:40 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
You guys!:P
Author:  1970cooper [ Sun Sep 20, 2020 9:22 am ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
I found this article from a few years back.
After changing the head gasket I also found an oil leak in the same place(back right corner behind thermostat),
oil only comes out when I rev the engine.
I have re torqued the head but still leaking,looks like I need to change head gasket again,what do you guys think.
Author:  Mick [ Sun Sep 20, 2020 5:05 pm ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
That little oil feed hole gives trouble with the wrong gasket. Whats the details there?
Author:  1970cooper [ Mon Sep 21, 2020 6:16 am ]
Post subject:  Re: I think I found the source of my oil leak... Thanks to M
Hi Mick,
I used a HYL3610 head gasket kit from minisport.
The 67 deluxe still has the original 998 engine but i am sure its got a 1100 head (12G202)
which I thought should be OK.
Can you recommend a good gasket so I can change it again and should I use Hylomar next time.
Thanks Felix
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