Jump to content


Photo
- - - - -

Timing Cover Oil Seal - Weird One!


  • Please log in to reply
16 replies to this topic

#1 GreenMini17

GreenMini17

    Formally known as Chris-G

  • Members
  • PipPipPipPipPip
  • 424 posts
  • Location: South

Posted 02 June 2014 - 07:23 PM

So last week after putting a new timing cover oil seal on, the damn thing started leaking immediately. Put a new one in again this weekend and its gone, again! I am really struggling to find an answer to why this keeps happening. Hoping someone can guide me!
I am using the KAD viscous damper crank pulley on my 1293 A+ turbo engine. It has MED vernier duplex timing chain. Standard tin timing cover fitted. It has the oil thrower fitted inside the case also. I double checked that the new seal fitted nicely on the crank pulley, which it did perfectly.
So, i pushed in the new seal being very careful not to damage the tin casing. The new seal was pushed fully home and fully square. No damage at all done to the new seal. I applied a smear of oil onto the new seal inner lips prior to fitting it back to the engine. After putting in a new gasket i placed the cover on to the back plate and did all the bolts up finger tight. I then put the crank pulley back on but did not do the pulley up murder tight, approx 60 lbs ft. I then did up tight all the bolts i could get to with the pulley still on. I removed the pulley again and then tightened up the remaining one bolt. I put the crank pulley back on for the final time and finshed putting the rest of the engine ancillaries back on.
I cannot see what i have done wrong?!! :(
I was very careful and very meticulous when i was putting it all together. Its so annoying.
I rang KAD earlier today to ask them their thoughts and they couldnt understand why either! The only thing they told me was to slide the pulley into the timing cover prior to placing the cover against the engine, then do the bolts up as per sequence i had already done (mentioned above). Its such a simple thing and its really trying my patience! Thanks in advance and ask as many silly questions as you want. Im lost!

#2 Gr4h4m

Gr4h4m

    Camshaft & Stage Two Head

  • Members
  • PipPipPipPipPipPipPipPip
  • 1,802 posts
  • Location: Chester
  • Local Club: Club less.....

Posted 02 June 2014 - 07:31 PM

keep the bolts loose on the timing cover and install the pulley before you do them up so it centralises against the pulley on the crank. are you also sure that ithe cover it straight and not leaking from that?



#3 GreenMini17

GreenMini17

    Formally known as Chris-G

  • Members
  • PipPipPipPipPip
  • 424 posts
  • Location: South

Posted 02 June 2014 - 07:33 PM

keep the bolts loose on the timing cover and install the pulley before you do them up so it centralises against the pulley on the crank. are you also sure that ithe cover it straight and not leaking from that?


I did. Well, finger tight? The cover is straight but its not leaking from there. Its 100% leaking from the seal because i can see it running down the case from it!

#4 cambiker71

cambiker71

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 1,050 posts
  • Location: Peterborough, Cambs
  • Local Club: Cambscustomclassics.com

Posted 02 June 2014 - 07:47 PM

The seal is the right way round isn't it? Flat side outwards, sprung lips facing inwards?



#5 Gremlin

Gremlin

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 2,142 posts
  • Location: Mere, Wiltshire

Posted 02 June 2014 - 07:48 PM

Wht crank case ventilation set up have you got?

#6 GreenMini17

GreenMini17

    Formally known as Chris-G

  • Members
  • PipPipPipPipPip
  • 424 posts
  • Location: South

Posted 02 June 2014 - 08:25 PM

The seal is the right way round isn't it? Flat side outwards, sprung lips facing inwards?


The metal spring that sits inside the seal is inside the timing case. Thats correct isnt it?!

#7 GreenMini17

GreenMini17

    Formally known as Chris-G

  • Members
  • PipPipPipPipPip
  • 424 posts
  • Location: South

Posted 02 June 2014 - 08:26 PM

Wht crank case ventilation set up have you got?


Ive got the breather pipe off to a catch tank.

#8 Gr4h4m

Gr4h4m

    Camshaft & Stage Two Head

  • Members
  • PipPipPipPipPipPipPipPip
  • 1,802 posts
  • Location: Chester
  • Local Club: Club less.....

Posted 02 June 2014 - 09:17 PM

how tight is the seal around the pulley shaft? do you have a mic to measure it and make sure it hasn't been machined too small?



#9 Gremlin

Gremlin

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 2,142 posts
  • Location: Mere, Wiltshire

Posted 02 June 2014 - 09:28 PM

Wht crank case ventilation set up have you got?

Ive got the breather pipe off to a catch tank.
Turbo set up :), just read that, is the breather or pipe or flame can blocked?

#10 GraemeC

GraemeC

    Crazy About Mini's

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPip
  • 7,467 posts
  • Location: Carnforth

Posted 02 June 2014 - 09:39 PM

keep the bolts loose on the timing cover and install the pulley before you do them up so it centralises against the pulley on the crank. are you also sure that ithe cover it straight and not leaking from that?


I did. Well, finger tight? The cover is straight but its not leaking from there. Its 100% leaking from the seal because i can see it running down the case from it!

May still be too tight if the cover can't easily move around on the bolts. KADs suggestion of putting the pulley into the seal before bolting it up is a good approach.

#11 GreenMini17

GreenMini17

    Formally known as Chris-G

  • Members
  • PipPipPipPipPip
  • 424 posts
  • Location: South

Posted 02 June 2014 - 10:28 PM

how tight is the seal around the pulley shaft? do you have a mic to measure it and make sure it hasn't been machined too small?


The seal is nice and tight on the pulley shaft. I wouldnt say it stretches, as such, but it is a damn near perfect fit in my opinion.

#12 GreenMini17

GreenMini17

    Formally known as Chris-G

  • Members
  • PipPipPipPipPip
  • 424 posts
  • Location: South

Posted 02 June 2014 - 10:29 PM

Wht crank case ventilation set up have you got?

Ive got the breather pipe off to a catch tank.
Turbo set up :), just read that, is the breather or pipe or flame can blocked?

Well, apart from the stupid foam thing that sits inside the flame can, no, its not blocked. This only transfers vapour, not oil though.

#13 GreenMini17

GreenMini17

    Formally known as Chris-G

  • Members
  • PipPipPipPipPip
  • 424 posts
  • Location: South

Posted 02 June 2014 - 10:30 PM

keep the bolts loose on the timing cover and install the pulley before you do them up so it centralises against the pulley on the crank. are you also sure that ithe cover it straight and not leaking from that?

I did. Well, finger tight? The cover is straight but its not leaking from there. Its 100% leaking from the seal because i can see it running down the case from it!
May still be too tight if the cover can't easily move around on the bolts. KADs suggestion of putting the pulley into the seal before bolting it up is a good approach.

Yes I think their approach is worth a try too. Hopefully its just something silly like that :/

#14 Gremlin

Gremlin

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 2,142 posts
  • Location: Mere, Wiltshire

Posted 02 June 2014 - 11:02 PM

Wht crank case ventilation set up have you got?

Ive got the breather pipe off to a catch tank.
Turbo set up :), just read that, is the breather or pipe or flame can blocked?
Well, apart from the stupid foam thing that sits inside the flame can, no, its not blocked. This only transfers vapour, not oil though.
I know, but if you could plumb in a positive ccv setup, your problems maybe solved, pipe it in before the turbo and your engine would implode! After and it would explode!

#15 GreenMini17

GreenMini17

    Formally known as Chris-G

  • Members
  • PipPipPipPipPip
  • 424 posts
  • Location: South

Posted 03 June 2014 - 06:11 AM

Wht crank case ventilation set up have you got?

Ive got the breather pipe off to a catch tank.
Turbo set up :), just read that, is the breather or pipe or flame can blocked?
Well, apart from the stupid foam thing that sits inside the flame can, no, its not blocked. This only transfers vapour, not oil though.
I know, but if you could plumb in a positive ccv setup, your problems maybe solved, pipe it in before the turbo and your engine would implode! After and it would explode!

What on earth is a positive ccv?! How? What? Where?




1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users