How long has the engine been in? Was it built recently? The thread you linked to may be the problem. If the sealant isn't applied properly to the front cam cap it may be the issue.
But both sides? its not very likely
I would think that crankcase pressure building up would cause the rear main to leak too.

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F.B. Racing
01 WRX (STI badged)
2010 XR5 Focus
06 Impreza Hatch 2.0i

Not sure, I'm running about 23psi so I don't think that is overly high enough to be causing excessive crank case pressure.

I've had other Subies running more boost and never had issues with the cam seals.

Pull out your pcv valve and shake it,(located under throttle body), if it doesnt rattle its not doing its job and needs to be cleaned out with carby cleaner or some other sort of solvent until it rattles when shaken. A blocked pcv valve can blow seals...

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Scooby Central

If it was CC pressure making the seals leak they all would be(f&R crackshaft,cam covers etc etc)

Most likely its the cam caps not being installed/sealed correctly or having a burr etc. You gotta follow the FSM for correct proceedure etc and its best to use subaru genuine seals.

oil pressure has nothing to do with it either.

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MY99 WRX EJ2.35L 720whp 9.48@147mph
https://youtu.be/c_lYEG0_Dyo

Bump

What sort of dollars is one looking at to have this fixed?

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I assume you won't be pulling it apart your self, Soyou can't check if the tech has used the correct sealing methodson the seal and the first caps,
Is the car fitted with aftermarket cams?
Has it been leaking since it's build?

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25 psi and still ain't broken........... And it broke

Ahh I presume Gav has sorted his in the year since this thread..

I just wanted a approx cost as mine need doing.

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Actually mine hasn't been sorted TJ, we have done the cam seals twice now and I'm led to believe it is the Cam caps that may be leaking.

I assisted the 2nd time and the seals were perfect, we even put some sealer on the seals when we put the new one's back in.

It was a fiddly job, radiator out, covers off, timing belt off, cam wheels off.

Hopefully mine will be 3rd time luck

if you are mechanicly minded you could do them your selves only problem i see is getting the cam gears off with out special tools. other than that crank seal is very easy to do.

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Marti


Car: C Red S13 Silvia 2.3l 400+rwhp-SOLD
Daily ae82 4age corolla (light mods)-Sold
Daily:SWB GQ Patrol
Will be a 03-04 STI next

Nope not mechanically minded - can write an essay on how to do it, but dont ask me to do it.

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