('98-'00) piston damage

no694terry · 12-03-2012, 03:07 PM

looks like it ran like this since it was unseen until i cleaned all the carbon from surface. the head shows no such markings. but this motor came as a spare with the car that was supposedly purchased in running condition from a junk yard. yet i have no old timing belt or gaskets or valve covers and heads were seperate. just the previous owners word which im beginning to feel pretty cheated. if i spend 500 bucks putting this motor back together and it wraps or blows, he wont be getting any subaru love from this guy.

no694terry · 12-13-2012, 03:11 PM

Put my valves and springs in today, all I can say is what a ***** that was. Tomorrow I hope to check the shims then bolt heads back onto block

*Aaron'z 2.5RS/WRX* · 12-14-2012, 02:18 AM

THose pistons are shot...

cptbarkey · 12-14-2012, 06:04 AM

not necessarily.

no694terry · 12-14-2012, 06:07 AM

Im gonna run it

I'm also planning on just sanding a little off the top of the valves rather than ordering new shims. i just checked my clearences and i would need a lot of shims

Joezilla64 · 12-19-2012, 05:37 AM

That's a bad idea. I know someone that did the exact same thing. A couple months later he showed me what a piston broken into 10 pieces looks like...

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*Aaron'z 2.5RS/WRX* · 12-19-2012, 06:48 AM

Quote:

Originally Posted by cptbarkey

not necessarily.

Cause you can see stress fractures with your xray vision...

*Aaron'z 2.5RS/WRX* · 12-19-2012, 06:48 AM

Quote:

Originally Posted by no694terry

im gonna run it

i'm also planning on just sanding a little off the top of the valves rather than ordering new shims. I just checked my clearences and i would need a lot of shims

smrt...

no694terry · 12-19-2012, 11:12 AM

well the heads are all set, have to clearences set, most a little sloppy harley style and i'm still not worried abou that piston. That happened years ago, that block has eatin two sets of valves already from timing belt failures.

I bet the motor i pulled out that was running when i pulled it has bent valves. It had a pretty good miss that i figured was from the head gasket but when i lined up the crank none of the cams lined up even after i rotated the crank again and again and again, each cam was several teeth off.

cptbarkey · 12-26-2012, 07:02 AM

Quote:

Originally Posted by Aaron'z 2.5RS/WRX

Cause you can see stress fractures with your xray vision...

oh please, move along troll.

flstffxe · 12-26-2012, 08:10 AM

^^ that troll is right.

Granted, since the engine was already running with them in there for some time. The likely hood of one shattering into many pieces is small if it hasn't happened by now.

But the edges are a great place to propagate hot spots to cause detonation.

*Aaron'z 2.5RS/WRX* · 12-26-2012, 09:31 AM

Quote:

Originally Posted by cptbarkey

oh please, move along troll.

If you'd trust it, well then, I'd never trust you... pretty simple...

no694terry · 12-26-2012, 10:45 AM

I ended up just buying another engine. But I still need a 97-98 dohc valve cover. The motor I got had a crack right cover, my other set of covers are off a 96

12-03-2012, 03:07 PM	#1 (permalink)
no694terry Forum Member Join Date: Nov 2012 Posts: 61 Location: Pittsburgh Car Year: 1998 Car Model: Forester S Transmission: 5mt Gallery: 0 Feedback Score: 0 reviews	piston damage looks like it ran like this since it was unseen until i cleaned all the carbon from surface. the head shows no such markings. but this motor came as a spare with the car that was supposedly purchased in running condition from a junk yard. yet i have no old timing belt or gaskets or valve covers and heads were seperate. just the previous owners word which im beginning to feel pretty cheated. if i spend 500 bucks putting this motor back together and it wraps or blows, he wont be getting any subaru love from this guy. __________________ How do I change my odometer to read "IRRELEVANT"

12-13-2012, 03:11 PM	#2 (permalink)
no694terry Forum Member Thread Starter Join Date: Nov 2012 Posts: 61 Location: Pittsburgh Car Year: 1998 Car Model: Forester S Transmission: 5mt Gallery: 0 Feedback Score: 0 reviews	Put my valves and springs in today, all I can say is what a ***** that was. Tomorrow I hope to check the shims then bolt heads back onto block __________________ How do I change my odometer to read "IRRELEVANT"

12-14-2012, 06:07 AM	#5 (permalink)
no694terry Forum Member Thread Starter Join Date: Nov 2012 Posts: 61 Location: Pittsburgh Car Year: 1998 Car Model: Forester S Transmission: 5mt Gallery: 0 Feedback Score: 0 reviews	Im gonna run it I'm also planning on just sanding a little off the top of the valves rather than ordering new shims. i just checked my clearences and i would need a lot of shims __________________ How do I change my odometer to read "IRRELEVANT" Last edited by no694terry; 12-14-2012 at 08:39 AM.

12-19-2012, 11:12 AM	#9 (permalink)
no694terry Forum Member Thread Starter Join Date: Nov 2012 Posts: 61 Location: Pittsburgh Car Year: 1998 Car Model: Forester S Transmission: 5mt Gallery: 0 Feedback Score: 0 reviews	well the heads are all set, have to clearences set, most a little sloppy harley style and i'm still not worried abou that piston. That happened years ago, that block has eatin two sets of valves already from timing belt failures. I bet the motor i pulled out that was running when i pulled it has bent valves. It had a pretty good miss that i figured was from the head gasket but when i lined up the crank none of the cams lined up even after i rotated the crank again and again and again, each cam was several teeth off. __________________ How do I change my odometer to read "IRRELEVANT" Last edited by no694terry; 12-19-2012 at 11:17 AM.

12-26-2012, 08:10 AM	#11 (permalink)
flstffxe Super Moderator Join Date: Dec 2007 Posts: 6,548 Location: Coon Rapids, MN Car Year: 2008 Car Model: Forester X Premium Transmission: 5MT Gallery: 0 Feedback Score: 1 reviews	^^ that troll is right. Granted, since the engine was already running with them in there for some time. The likely hood of one shattering into many pieces is small if it hasn't happened by now. But the edges are a great place to propagate hot spots to cause detonation. __________________ His - 08 X Prem 5mt Hers - 08 X 4EAT Subaru oil filter comparison

12-14-2012, 02:18 AM	#3 (permalink)
Aaron'z 2.5RS/WRX Taking a Walkabout in the Outback Join Date: Jul 2012 Posts: 918 Location: Hickagain.... (Mi) Car Year: '03 Car Model: Fozzy Transmission: Eat A Taco Gallery: 0 Feedback Score: 0 reviews	THose pistons are shot...

12-14-2012, 06:04 AM	#4 (permalink)
cptbarkey Forum Member Join Date: Sep 2012 Posts: 34 Location: tx Car Year: 1999 Car Model: Forester Transmission: Auto Gallery: 0 Feedback Score: 0 reviews	not necessarily.

12-19-2012, 05:37 AM	#6 (permalink)
Joezilla64 Forum Member Join Date: Jul 2012 Posts: 18 Location: New Jersey Car Year: 2004 Car Model: Forester x Transmission: 5 speed Gallery: 0 Feedback Score: 0 reviews	That's a bad idea. I know someone that did the exact same thing. A couple months later he showed me what a piston broken into 10 pieces looks like... Sent from my iPhone using AutoGuide.com Free App

12-26-2012, 10:45 AM	#13 (permalink)
no694terry Forum Member Thread Starter Join Date: Nov 2012 Posts: 61 Location: Pittsburgh Car Year: 1998 Car Model: Forester S Transmission: 5mt Gallery: 0 Feedback Score: 0 reviews	I ended up just buying another engine. But I still need a 97-98 dohc valve cover. The motor I got had a crack right cover, my other set of covers are off a 96 __________________ How do I change my odometer to read "IRRELEVANT"

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