2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Wear pattern on Rotor?

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Old Oct 12, 2008 | 08:18 PM
  #1  
Fire85GSLSE's Avatar
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Chad Carson
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Wear pattern on Rotor?

Anyone ever seen a wear pattern like this?
Note where the red circles are......................

E shaft got a little hott........ the person said they blew a coolant seal.
What they did not say is that they drove it for weeks after.
Attached Thumbnails Wear pattern on Rotor?-mvc-067s.jpg   Wear pattern on Rotor?-mvc-069s.jpg  
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Old Oct 12, 2008 | 08:21 PM
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Who Shot the Sheriff?
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What do the irons look like?
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Old Oct 12, 2008 | 11:16 PM
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Yea, its possible the irons got warped when they overheated. Hence causing the crazy wear you see.
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Old Oct 13, 2008 | 02:02 AM
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$1 says the iron is f'd. Lack of oil is a bitch.

Any idea how hot the coolant got?

Last edited by Stanello; Oct 13, 2008 at 02:05 AM.
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Old Oct 13, 2008 | 06:03 AM
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Chad Carson
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to the eye, the irons look good with no strange wear marks. When I cracked the motor the oil control rings were loose and not seated into the rotor like all the other motors I have cracked.
As for the temp of the coolant, not sure. This was another persons motor.

I just wanted to post those pics because I have never seen the rotor wear like that.
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Old Oct 13, 2008 | 10:31 AM
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That engine has been severely overheated, ran low on oil, and overrevved.

The housings may be usable. That's about it. The irons may be saved by lapping if they aren't too bad.
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Old Oct 13, 2008 | 01:44 PM
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Motor is toast.
I wouldn't touch anything that was in it.
It's better to buy all the parts ala carte off of eBay, IMO.


-Ted
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Old Oct 13, 2008 | 04:06 PM
  #8  
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Chad Carson
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Guys, I agree with you all.
Again I was just posting these pics because I have never seen this before.
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Old Oct 14, 2008 | 12:16 AM
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The pic of the e-shaft bearing journal is what happens when oil breaks down and stops lubricating.

The pic of the rotor with the side seals disappearing into the middle is a sign of overreving and the rotor slapping against the side housings, and / or oil breaking down / lack of lubrication.

Yes, it's basically an abused motor.


-Ted
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Old Oct 14, 2008 | 11:13 AM
  #10  
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Chad Carson
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Originally Posted by RETed
The pic of the e-shaft bearing journal is what happens when oil breaks down and stops lubricating.

The pic of the rotor with the side seals disappearing into the middle is a sign of overreving and the rotor slapping against the side housings, and / or oil breaking down / lack of lubrication.

Yes, it's basically an abused motor.


-Ted

Sounds good, that is what I was wondering on the sides of the rotors.
Man I need to move over there........ your sig pics as always are hott!
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