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Timing Belt Slipped

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Old Aug 28, 2009 | 04:40 PM
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Timing Belt Slipped

bad time in my life right now.....i was cruising at like 15mph and my car just shut off, i can try to turn it over and it will backfire a little bit but wont ignite., i cant turn the crankshaft with my hands it gets stuck after 1 turn but turning over the motor with the key it'll move. i think i need a full head rebuild hopefully nothing wrong with the block/pistons. does anyone know what it means when your crankshaft gets stuck when trying to turn it? i opened up the timing cover and seen some shreds but do damage to the belt....but my point is, what happens when the crankshaft locks?

-also, what do i need for a full head rebuild?
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Old Aug 28, 2009 | 04:44 PM
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if your crank is stuck it probably means that a piston hit a valve somewhere.
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Old Aug 28, 2009 | 04:45 PM
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stock belt? or did you do the belt recently?
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Old Aug 28, 2009 | 04:52 PM
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OEM replacement belt, with 10k on it. i mean whats more likely to be damaged, a piston or valve, my guess is vavle. but its not like i was a 7k rpm i was like at 1.5-2k and it just bogged down and died
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Old Aug 28, 2009 | 04:54 PM
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with the belt on you might have a hard time getting the crank to turn maybe from the lobes on the cams. Unless you are really wrenching on it?
Plugs out?
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Old Aug 28, 2009 | 04:56 PM
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Originally Posted by AWD_Terror
with the belt on you might have a hard time getting the crank to turn maybe from the lobes on the cams. Unless you are really wrenching on it?
Plugs out?
no i didnt remove the plugs, cant turn it more than once period belt on or off...
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Old Aug 28, 2009 | 05:02 PM
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sounds like you threw a valve into the block not allowing the piston to fully come up and allow full rotation of the crank.
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Old Aug 28, 2009 | 05:09 PM
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Originally Posted by AWD_Terror
sounds like you threw a valve into the block not allowing the piston to fully come up and allow full rotation of the crank.
does that sound like a new head or new valves? i never delt with anything like this before...
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Old Aug 28, 2009 | 05:14 PM
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Originally Posted by Evokid8
does that sound like a new head or new valves? i never delt with anything like this before...
New motor.
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Old Aug 28, 2009 | 05:17 PM
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Originally Posted by ak47po
New motor.

sorry to say, but ak47 is right.
Your prob gonna need new valves and pistons.
When valves hit pistons they usually do a nasty job. I have seen my friends 2G that he got lucky and just needed a few new valves because they only left tiny tiny tiny nicks in one piston, but chances of that are slim.

youll see when you get the head off
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Old Aug 28, 2009 | 05:22 PM
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Originally Posted by AWD_Terror
sorry to say, but ak47 is right.
Your prob gonna need new valves and pistons.
When valves hit pistons they usually do a nasty job. I have seen my friends 2G that he got lucky and just needed a few new valves because they only left tiny tiny tiny nicks in one piston, but chances of that are slim.

youll see when you get the head off
oh lord. i mean is it pretty much replacing valves and pistons or does it involve more than that?
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Old Aug 28, 2009 | 05:28 PM
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Originally Posted by Evokid8
oh lord. i mean is it pretty much replacing valves and pistons or does it involve more than that?
Your going to have too tear the whole motor apart to see what's damaged.
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Old Aug 28, 2009 | 05:32 PM
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heres a link. same thing as you, on a dsm.
http://www.dsmtuners.com/forums/cyli...got-loose.html
hope it helps you.
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Old Aug 28, 2009 | 06:45 PM
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Originally Posted by Evokid8
oh lord. i mean is it pretty much replacing valves and pistons or does it involve more than that?
Depends, gonna have to open up the engine to be 100% sure. Its recommend to replace the gaskets and seals so that adds to the cost.

Sucks about the timing belt snapping, any idea what caused it?
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Old Aug 28, 2009 | 07:16 PM
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Originally Posted by Tangerine
Depends, gonna have to open up the engine to be 100% sure. Its recommend to replace the gaskets and seals so that adds to the cost.

Sucks about the timing belt snapping, any idea what caused it?
tensioner...
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