Car died in intersection .

[Locke]

have any of you guys ever shredded a Timing Belt and not bend all your valves.. Cause that would potentially make my day if that actually had a moderately decent chance of happening. thank you. You guys ahve been alot of help.

Yes, people have blew timing belts and not had valve damage on rare occasions, (or enough to cause a loss of compression, at least) but that is wishful thinking, on your part. Expect and prepare for the worst in this case, as valve damage is highly probable.

 

[Pring]

so heres a thought. MY timingbelt didn't let go.. The bearing in the tentioner gave out and dropped on the floor when we took the belt.. or what was left of it out. There was kid that I went to highschool with that bought the eclipse he was driving with this same exact problem. His Valves weren't bent and he said the man he bought it off of told me he had the same symptoms as far as car stauling outa nowhere. Is there any reason for me to beleive I may still have good valves. I rotated the balancer( bottom pulley) 360 degrees and there was no tick or knock or any sign of it colliding with a valve.. I hope I got lucky this time.

 

[1slow97]

If the timeing belt is off the car. you can't tell by rotateing the crank pulley. unless the belt is on.

 

[Locke]

If you can rotate the crank without turning the cams accordingly, (the belt removed, teeth sheered off, way out of time) and you do not hear/feel the valves colliding with the pistons, then they would all be bent or broken.

Only way to know, without pulling the head, would be to install a new timing belt, time the motor, and check the compression. You will be purchasing a new belt regardless, so it is not wasted money to do this.

 

[Pring]

I already purchased a new belt thinking that that was going to be the problem.. Given that the belt was all sheered up and hangon by a few strand it still had teeth.. The problem was the bearing on the tentioner went out. We ordered them to be overnighted tonight.
So tommorow night I'll have a belt on it with a new tensioner and we'll see if I have bent valves.. I'm realy hoping not I need a car to take to school..

 

[Pring]

replaced timing belt.. and drove the car home. How do you like that.. I never thought I'd ever get a lucky break in my life.. Thanks guys

 

[1slow97]

congradulations,I would say you are one of the luckey few...

 

[VelocitàPaola]

I would still do a compression test to confirm your "luck."

 

[Pring]

I did the compression test before I got it in there .. got at least 150 lbs on every cylinder... I wonder what happens in the case that the valves don't get smashed compared to when they do.. What has to happen for you to be.. the "LUCKY" one?

 

[VelocitàPaola]

I did the compression test before I got it in there .. got at least 150 lbs on every cylinder... I wonder what happens in the case that the valves don't get smashed compared to when they do.. What has to happen for you to be.. the "LUCKY" one?

The engine has to be within a few degrees of either TDC or BDC (basically, at the apex of either the compression or combustion strokes), when all valves are supposed to be closed. Considering there's 720 degrees in a four stroke cycle, and you're aiming for just 5 - 10 degrees out of those 720, you can see the odds are against you.

150psi in each cylinder sounds low; you're not out of the woods yet.