Need help, Is this normal? Scoring on my block?

twistymaster · 11-26-2011, 10:24 PM

Pulled my motor to replace a rear main seal, This is a vigilant street series Cp piston motor with 3k break in miles on it that always ran Rotella? Is this scoring normal on the block? I have been hearing an excessive piston slap sound that gets quieter once warm. But now i'm wondering what I was really hearing..

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sense of nature · 11-26-2011, 10:40 PM

Normal.

WoodsWagon · 11-27-2011, 02:27 AM

No, that's not normal. The crank should not be rubbing the block, your thrust bearing is most likely shot. Check the endplay on the crank by pushing it to the front and the back with a prybar, I bet you it will move a 1/4" or more because the bearing is gone.

stu · 11-27-2011, 03:35 AM

if it were rubbing it would of taken the silicone off of the block halfs.

twistymaster · 11-27-2011, 01:05 PM

Ive had two things that scared the s*** out of me so far. It was that block scoring. . also I looked down a spark plug hole and could have sworn I saw a chunk taking out of a piston. I guess it was just that wrinkle finish that occurs from carbon and fuel mixxing.

AREA1320 · 11-27-2011, 03:12 PM

Woods- if you dont know dont reply

Op- yes those are the normal machining marks. And why did you drop the pan to replace the rear main? And why are you replacing the rear main at only 3k

The piston slap is common on CP motors. They are noisy.

twistymaster · 11-27-2011, 06:31 PM

I wanted to reseal the oil pan with red seal it instead of the black I had on it before. and I think I had some oil coming from the rear main. I wasn't the one to install the rear main seal I have no idea why it was leaking. It came pre installed.

twistymaster · 11-27-2011, 06:32 PM

suffice it to say if I need anything done underneath this motor I'm going to pull it. it's extremely easy to pull this and I can pull it in 2 hours by myself.

11-26-2011, 10:24 PM	#1
twistymaster Scooby Newbie Member#: 279743 Join Date: Apr 2011 Chapter/Region: TXIC Location: Austin, Texas Vehicle: 2002 WaGonWrx Hybrid Blue	Need help, Is this normal? Scoring on my block? Pulled my motor to replace a rear main seal, This is a vigilant street series Cp piston motor with 3k break in miles on it that always ran Rotella? Is this scoring normal on the block? I have been hearing an excessive piston slap sound that gets quieter once warm. But now i'm wondering what I was really hearing.. * Registered users of the site do not see these ads.

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11-26-2011, 10:40 PM	#2
sense of nature Scooby Guru Member#: 112759 Join Date: Apr 2006 Chapter/Region: MWSOC Location: In the V hole! Vehicle: 02 Srp STi... R ur Boltz to long????	Normal.

11-27-2011, 02:27 AM	#3
WoodsWagon Scooby Newbie Member#: 180769 Join Date: May 2008 Chapter/Region: NESIC Vehicle: lots of junkers	No, that's not normal. The crank should not be rubbing the block, your thrust bearing is most likely shot. Check the endplay on the crank by pushing it to the front and the back with a prybar, I bet you it will move a 1/4" or more because the bearing is gone.

11-27-2011, 03:35 AM	#4
stu Scooby Specialist Member#: 25768 Join Date: Oct 2002 Chapter/Region: RMIC Location: CO springs Vehicle: 35R bugeye Awdsome	if it were rubbing it would of taken the silicone off of the block halfs.

11-27-2011, 01:05 PM	#5
twistymaster Scooby Newbie Member#: 279743 Join Date: Apr 2011 Chapter/Region: TXIC Location: Austin, Texas Vehicle: 2002 WaGonWrx Hybrid Blue	Ive had two things that scared the s*** out of me so far. It was that block scoring. . also I looked down a spark plug hole and could have sworn I saw a chunk taking out of a piston. I guess it was just that wrinkle finish that occurs from carbon and fuel mixxing.

11-27-2011, 03:12 PM	#6
AREA1320 Former Vendor Member#: 112508 Join Date: Apr 2006 Location: Easton, PA	Woods- if you dont know dont reply Op- yes those are the normal machining marks. And why did you drop the pan to replace the rear main? And why are you replacing the rear main at only 3k The piston slap is common on CP motors. They are noisy.

11-27-2011, 06:31 PM	#7
twistymaster Scooby Newbie Member#: 279743 Join Date: Apr 2011 Chapter/Region: TXIC Location: Austin, Texas Vehicle: 2002 WaGonWrx Hybrid Blue	I wanted to reseal the oil pan with red seal it instead of the black I had on it before. and I think I had some oil coming from the rear main. I wasn't the one to install the rear main seal I have no idea why it was leaking. It came pre installed.

11-27-2011, 06:32 PM	#8
twistymaster Scooby Newbie Member#: 279743 Join Date: Apr 2011 Chapter/Region: TXIC Location: Austin, Texas Vehicle: 2002 WaGonWrx Hybrid Blue	suffice it to say if I need anything done underneath this motor I'm going to pull it. it's extremely easy to pull this and I can pull it in 2 hours by myself.