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Old 05-11-2009, 12:04 PM   #1
Mike_Subaru
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Member#: 189378
Join Date: Sep 2008
Default Bent Valves Question....

My Timing belt skipped after the Vibration Damper seperated. The Dampner, seperated at the rubber (5 years old and 110,000 miles) and the pully part of it, slipped into the Timing cover, melting the plastic, and the plastic get into the timing belt, causing the skip.

All 8 of the exhast valves are bent.

2002 - 2.5 - Non turbo.

The pistons have tiny impact marks (fingernail size and shape) barely 1/4 in long, and maybe 1/16 inches deep into the piston.

Any worry here, or does anyone have EXPERIANCE with the rods being damaged ( twisted) from the impact?

Any other info, or "Watch-out for's" that I should be watching out for?

I will have the valve guides inspected for cracking, and I will also be installing new Intake Valves too.

I will be using a new Perrin Pully, have one on my other two Subaru's, and I love them.

Thanks in advance. Mike
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Old 05-11-2009, 12:51 PM   #2
crampfan
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Member#: 74321
Join Date: Nov 2004
Chapter/Region: MWSOC
Location: clarksville AR
Vehicle:
2004 wrx wag
black UTEC stg 4

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the only damage I have seen from this kind of failure has been isolated to the valves. I haven't seen any bottom end damage.
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Old 05-11-2009, 06:46 PM   #3
RaceFaceXC
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Join Date: Dec 2007
Chapter/Region: South East
Location: stupid Florida
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2007 No YELLING
on the bus!

Default

just replace the guides... even if they are not cracked they will be out of spec dimensionally and may lead to oil consumption to be on the conservative side. premature valve wear, bad sealing, etc etc are also likely. The parts are reasonably cheap and with the heads out to do the valve job, labor will be next to nothing.
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