Jump to content
Ultimate Subaru Message Board

Recommended Posts

The reason I ask is because the motor needs rebuild or replace. If I can find a motor then I won't rebuild, and if there are multiple motors that would fit it increases my chances.

 

I love the car buy I don't want a money pit

Link to comment
Share on other sites

never read of that issue before.

others here will be better able to advise you - just make sure you need an engine before proceeding. If the issue is 'only' in the heads (no overheating, oil starvation, etc. that would affect the other internals) - you could get used/rebuilt heads put on, with MLS gaskets, and perhaps have a more reliable engine than an entire used engine.

Edited by 1 Lucky Texan
Link to comment
Share on other sites

1) To answer your first question, the choices of engine for your car are limited, unless you would want to do an entire swap, which it is obvious you don't.   Therefore, you must either find an engine which matches your engine (between 2006-2009).  If you have AVCS or VVT, it must match those.  Also, the PCV hole in the top of the block, crank sprocket, left cam sprocket, EGR, and number of exhaust ports must match.  The crank sprocket and left cam sprocket can be swapped: the other stuff...not so much.

 

2) Diagnosing the kind of noise you describe is nearly impossible without tearing into the engine.  There are so many things which can cause it.  So, without going into that any more, yeah...you need a new engine.

Link to comment
Share on other sites

 

2) Diagnosing the kind of noise you describe is nearly impossible without tearing into the engine. There are so many things which can cause it. So, without going into that any more, yeah...you need a new engine.

Or it could be slight piston slap which may pose no real imminent problem depending on severity.

 

Described as "ticking". Much more likely to be piston slap than if it was a knocking.

 

To the OP. I would have the oil screen at the pressure valves on each head cleaned/replaced. Could just be vale train noise from lack of pressure to the AVCS( one intake valve per cyl has variable lift activated by oil pressure)

Edited by Gloyale
Link to comment
Share on other sites

Or it could be slight piston slap which may pose no real imminent problem depending on severity.

 

Described as "ticking". Much more likely to be piston slap than if it was a knocking.

 

To the OP. I would have the oil screen at the pressure valves on each head cleaned/replaced. Could just be vale train noise from lack of pressure to the AVCS( one intake valve per cyl has variable lift activated by oil pressure)

 

That's the problem: we don't know if it actually is a piston slap noise (which generally goes away when the engine has warmed up), unless it's gotten bad enough to damage the cylinder walls.  Nor do we know if it is AVCS or VVT.  It could be a cracked ring land, a cracked flex plate (if it's an automatic), loose wrist pin...the list goes on.

It is also possible that a valve adjust could solve the problem. 

I'm just saying that it is all conjecture at this point.  Every action at this point, without knowing, is just throwing money at it.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...