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| Maintenance & Repairs: Oil choices, timing belt, setting timing, CV boot replacement, alternator servicing, fuse/relay checks, and other basic maintenance, repair and diagnosis discussions. Probationary Members can post here. |
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07-21-2012, 04:09 PM
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#1 (permalink)
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Proven Member

From: Appleton, Wisconsin
Registered: Oct 2011
Reputation:
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installing tbelt and bent valves
When installing a timing belt, I had the cam marks pretty much lined up (both could have been turned in just a hair) and I was rotating the crankshaft so to line up that mark. It got kinda hard to rotate it (no spark plugs so no compression) and it made a weird noise, somewhat like a scraping noise. Is it possible that I bent some valves?
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07-21-2012, 04:12 PM
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#3 (permalink)
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Proven Member

From: Appleton, Wisconsin
Registered: Oct 2011
Reputation:
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yes and no. It did get harder but it was something that didn't take much force. Maybe 20ft/lbs? That is a very rough estimate btw. It was noticeably harder than it was before that
When I turned one of the camshafts a quarter turn I was able to continuously rotate the crankshaft easily
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07-21-2012, 05:00 PM
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#4 (permalink)
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Proven Member

From: Appleton, Wisconsin
Registered: Oct 2011
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I would think it would take a hell of a lot to bend valves, thinking about it. I may have just been pushing the camshaft but idk
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07-21-2012, 05:05 PM
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#5 (permalink)
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Proven Member

From: Scott AFB, Illinois
Registered: Jan 2009
Reputation: 
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I doubt that you messed anything up.
Did this happen right as you were getting the mark lined up?
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07-21-2012, 05:06 PM
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#6 (permalink)
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Proven Member

Car: 1995 Mirage Coupe
From: North St. Paul, Minnesota
Registered: Feb 2008
Reputation:
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Yeah I've done the same thing and never bent valves before so as long as you weren't cranking on it real hard I'd say you're probably fine.
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07-21-2012, 05:08 PM
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#7 (permalink)
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Proven Member

From: Kalamazoo, Michigan
Registered: May 2007
Reputation:
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Can you turn the crank over if you can you should be ok, youll know more when you start the car.
____________________________
DSMer Since 94
Ecmlink
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07-21-2012, 06:29 PM
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#9 (permalink)
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Supporting Member

From: Philipsburg, Pennsylvania
Registered: Jan 2009
Reputation:
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When my cam timing marks looked a hair off it was when my dowel pins for the cam were facing down, they looked perfectly strait with them up. Make sure you didn't time it 180* out, but I don't know if that would effect the valve clearances.
You can also do a garage leak-down test with a compression tester fitting and regulated air to check for bent valves.
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