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Old 08-09-2007, 11:35 PM   #1
perrin247
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Default Bottom end on its way heads may be shoot tell me what you think

I think i might be screwed with my heads off my 02 wrx...i knew i was misfireing but the carbon build up is just grose, it there a some what cheeper way i can go about fixing this because this was totally unforscene. Has anyone fulled there heads off and seen something like this before?
http://s204.photobucket.com/albums/b...t=CIMG2810.jpg

The good
http://s204.photobucket.com/albums/b...t=CIMG2811.jpg

The Bad
http://s204.photobucket.com/albums/b...t=CIMG2812.jpg
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Old 08-09-2007, 11:48 PM   #2
LiquidForce
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2002 2.5l Wrx
517whp/516wtq (Stage pi)

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I'd guess that the rings or ringlands on #3 are toast. But on the bright side I bet the heads will be fine once you clean them up.
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Old 08-10-2007, 12:03 AM   #3
perrin247
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my dad was saying once i clean them up they might be fine but im still very nervous about them. what can i use to clean them up?
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Old 08-10-2007, 12:35 PM   #4
Acostafan
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Pay the money to have them hot tanked, machined(if necessary)and vacuum and pressure tested. It's well worth it. 150-250bucks depending on the shop. You need to address the bigger problem in cylinder #3 before you do ANYTHING.
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Old 08-10-2007, 01:00 PM   #5
modaddict
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sold to a good bud
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send them out to be hot tanked!
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Old 08-10-2007, 01:18 PM   #6
T_A_C_H
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I second the motion
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Old 08-10-2007, 02:45 PM   #7
p1prodrive
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no head fault there, its your rings for sure
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Old 08-10-2007, 04:39 PM   #8
beavis820
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looks cracked in the top right corner into the coolant passage?

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Old 08-10-2007, 04:41 PM   #9
Acostafan
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^^^you might be right, could be a bit of sludge though. What say you OP?
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Old 08-10-2007, 07:45 PM   #10
modaddict
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if it was cracked to the coolant passage, the combustion chamber would most likely be clean.
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Old 08-10-2007, 08:15 PM   #11
Starkiller
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I paid 120 for a local shop to disassemble heads and glass bead the combustion chamber clean.
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Old 08-12-2007, 08:07 PM   #12
perrin247
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A friend of my dad owns a race engine shop hes going to hot tank them and do a leak down test. Hopfully there in good enough shape to get my car back up.
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Old 08-14-2007, 08:34 PM   #13
stu
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I was told not to hottank an aluminum head. it could actually warp the head I think steam cleaning them would work better and save you anymore trouble.
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Old 08-15-2007, 05:02 PM   #14
perrin247
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World Rally Blue

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how would i go about steam cleaning them...can i take the shims that sit on top of the valves off or do i have to number each one and put them back in the same order...or are they all the same. Thanks again for the help everyone.
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Old 08-15-2007, 05:55 PM   #15
Starkiller
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You can also have them cleaned via glass beading
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Old 08-15-2007, 06:17 PM   #16
Acostafan
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2002 Now with 100%
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You need to mark those shims and put them back where they came, it's very important.
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