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Old 02-23-2009, 01:11 PM   #1
obyone
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OMG!

I was driving home, taking a downward slope onramp and gave it some gas when she sputtered and the engine shut off. While coasting, I tried to start it a few times and finally just pulled to the side. The car still started and ran like utter crap, knocking and sputtering like all hell.

The shop today told me there's little to no compression on both passenger side cylinders and my engine may be dead at 128k miles. I could either pay $2500 for a used engine plus labor, or have him crack it open to see if they can save her.

She's a 2000 RS in Sedona Red (a very rare color) body still in good condition but she could use a paint job on the hood and trunk, just installed brand new 4 pots front new calipers rear and WRX rotors all around. My EJ25 has aftermarket cams & Valve Springs installed, but other than that the internals are stock.

What should I do?
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Old 02-23-2009, 01:37 PM   #2
Mr_Snips
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try and save the heads and either have a new block built for way less than 2500 with high compression pistons and balanced. And see how that goes or just do what i did and find one used from a junkyard. i'm at about 1500 right now for a newer motor installed with some new goodies.
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Old 02-23-2009, 02:21 PM   #3
obyone
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Not looking to mod, unless I can find a WRX swap for less than what the car is worth...really just looking for what I can do to keep her.

I love my scoob and hate to lose my pretty girl.
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Old 02-23-2009, 02:46 PM   #4
Mr_Snips
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you good sir have a PM
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Old 02-24-2009, 12:44 AM   #5
nmb1bacardi
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do a wrx swap or sti swap
v8))~
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Old 02-24-2009, 08:07 PM   #6
RaceFaceXC
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if both pass cyls have no compression, id bet you bent valves due to a timing belt slip. how long ago did you do the cams/have the timing belt off? cant imagine you blew rings/ringlands on two cyl at the same time. id give you an hour to gather a crowd and then kiss your ass if that happened.
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Old 02-25-2009, 10:58 PM   #7
8Complex

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Quote:
Originally Posted by RaceFaceXC View Post
if both pass cyls have no compression, id bet you bent valves due to a timing belt slip. how long ago did you do the cams/have the timing belt off? cant imagine you blew rings/ringlands on two cyl at the same time. id give you an hour to gather a crowd and then kiss your ass if that happened.
From reading the original post, this sounds like the most likely scenario. Probably had one of the timing belt pulleys' bearings freeze up... mine did this in late 02-ish (IIRC) when I last had the turbo kit on. I got away with a new pulley and replacing the valves... still running today, but likes to burn oil... probably loose valve guides. The pistons had some minor marks on the tops, but they were so shallow that I didn't even file them down.

Do like me? I wouldn't suggest it to everyone, but it's a cheap fix for the temporary. (yeah, I treat mine worse than I'd ever treat anyone else's)
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Old 02-24-2009, 08:13 PM   #8
Patrick Olsen
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Yeah, it does sound to me like a timing belt slip.
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Old 02-25-2009, 01:42 AM   #9
imprezkid
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I just went and found a used on, i spent 800 for engine tranny clutch rear diff out of a 2005 outback, with only 25k miles
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Old 02-25-2009, 11:28 AM   #10
01gtlimited
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Another possibility is just that the head gasket failed between the two cylinders and is allowing compression to blow back and forth between them.
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Old 02-25-2009, 11:46 AM   #11
Back Road Runner
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125k + original timing belt (he didn't mention any past work here) seems kind of obvious...unless he's had it done around 100k...
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Old 12-10-2010, 06:12 PM   #12
obyone
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I know this is old but for anyone elses benefit, you guys were correct. The timing belt pulley froze for a bit and the belt jumped a tooth. Then Mr. Piston said hello to Ms. Valve, but they weren't much of a match and butted heads.

Bent valves and a new engine later, I'm running.....with a busted MAP Sensor. (not the fault of the new engine. this sensor came off my old one)
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Old 12-10-2010, 07:05 PM   #13
Back Road Runner
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As far as I've read, it takes several teeth off to start causing issues.

It's tough to say why you don't have compression outside of actually finding out what's broken.
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Old 12-10-2010, 11:08 PM   #14
xsurebolik
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check the timing those plastic pulley may have spun
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Old 12-10-2010, 11:12 PM   #15
williaty
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Quote:
Originally Posted by Back Road Runner View Post
As far as I've read, it takes several teeth off to start causing issues.

It's tough to say why you don't have compression outside of actually finding out what's broken.
Getting the cam out of time with the crank almost, but not quite, enough to smack the piston into the valves will cause the engine to stop and cause a compression gauge to read 0 or damned close to it. Compression gauges really don't reliably read much of anything below 30-35psi and you can stay well below that if you're closing the intake valve much later than it should.
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