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Engine out reseal

 
Old 03-14-2019, 11:40 AM
  #46  
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Originally Posted by Gage View Post
Are you planning to remove the balance shaft covers?
Iím conflicted on this one because thereís no evidence that the balance shaft covers are leaking. Do they often leak?
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Old 03-14-2019, 11:48 AM
  #47  
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They do. Most often at the rear of the housings. My upper balance shaft has been leaking for a few years, but it’s a Turbo, so I ashamedly put up wit it versus the amount of work required to replace the small o-ring to blame for the leak.
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Old 03-14-2019, 12:54 PM
  #48  
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They do and they will. It's an unfortunate design detail of the rear o ring seals that they are not serviceable without removal of the covers.
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Old 03-14-2019, 12:57 PM
  #49  
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Originally Posted by EJZero1 View Post
They do. Most often at the rear of the housings. My upper balance shaft has been leaking for a few years, but itís a Turbo, so I ashamedly put up wit it versus the amount of work required to replace the small o-ring to blame for the leak.
Hmm, interesting. Mine's a turbo too so I don't want to have to get back in this far anytime soon. Can those rear o-ring be replaced without removing the entire housing?

I'm reluctant to remove the entire housing because it's one more sealing surface that I have to get exactly right or have a new leak. Clark's Garage recommends leaving them alone unless they leak, but maybe that's just because of the amount of work to get to them in the car.
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Old 03-14-2019, 01:11 PM
  #50  
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Work for today will include replacing front of engine races and seals on the crank, cam, and balance shafts. Here's why you probably want to replace your races as well as the seal. The scoring, though barely noticeable to your fingernail, is where the old seal rode, so even a new seal could leak:


Oil pump gear. Interesting that this one from Paragon has a different gear profile. Same dimensions and slides right in place. Old one also scored:


The oil pickup tube seal was in terrible shape, making me think it was incorrect (just a little more evidence that this motor may have been rebuilt in the past). Old one and the new one installed:



Cheers!
Jeremy
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Old 03-14-2019, 01:44 PM
  #51  
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More good pictures and tips...thanks, keep up the great work!
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Old 03-14-2019, 02:27 PM
  #52  
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Looking good! Change the balance shaft seals. They are as old as the rest
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Old 03-14-2019, 02:45 PM
  #53  
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Originally Posted by mj951 View Post
More good pictures and tips...thanks, keep up the great work!

Originally Posted by Dan Martinic View Post
Looking good! Change the balance shaft seals. They are as old as the rest
Sigh. You're right, you're right, I know you're right!
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Old 03-14-2019, 05:56 PM
  #54  
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voith might have his custom balance shaft seals available.

looks like the o-ring on the upper balance shaft housing and the oil filter housing are the primary leaks
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Old 03-14-2019, 06:56 PM
  #55  
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While we're poking holes in your productivity... Oil cooler seals?
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Old 03-14-2019, 07:43 PM
  #56  
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Originally Posted by Gage View Post
While we're poking holes in your productivity... Oil cooler seals?
Well I havenít tackled the oil cooler and hoses yet, but I know one of my major leaks was coming from one or both of the hoses. I plan to reseal the oil filter housing, new hoses, and Iím sure oil cooler seals.

Back to the balance shaft housings, is it routine to replace the balance shaft bearings, or can I inspect them and then decide?
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Old 03-14-2019, 07:47 PM
  #57  
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In a clean engine like yours, the balance shaft bearings will be fine.
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Old Yesterday, 09:25 AM
  #58  
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Great work! I did this same thing to mine in 2016-2017 and it was such a rewarding and fun experience. Your motor will look awesome when it's all complete.

Justin
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