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Discussion Starter #1
My wife was driving my car and it quit!. To make a long story short the timing belt broke! What are the chances of it not f***ing up the engine?? Please tell me that my luck won't be all bad. If it is bad, what does it take to fix it? (mat'ls, price, etc) and how about the problems with doing it myself? I am repairing the belt myself. It is almost tore down, but do you also have to remove the crank pulley? And what about the tensioning? I don't want to have to buy any more tools if I don't have to.
Someone give me some GOOD news, PLEASE!!
 

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Only Tonic is Chronic
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Well, this isnt what you are gonna want to hear, but you chances of getting out with just a broken belt are Slim to None. Allow me to explain. These engines are Inteference Engines..every relies on the belt, and that includes the Valves and pistons. If the belt isnt present i.e Brakes then there is gonna be issues with the engine.
For instance my, my belt jumped while in Reverse, and I bent all my Exhaust Valves.
Your belt BROKE while in foward Gear. At the very least expect bent Intake valves and Pray it didnt damage the pistons.

Sorry about the incident, but dont count on getting out easy.
 

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forward and reverse makes no diff... the engine rotates the same way all the time, no matter if you are in reverse or 1st..

I'd say if you are lucky and it stopped right, you won't bend any valves. If she was at a high RPM the engine may have had enuf momentum to keep turning while some valves were stuck open. If it did bend some valves, i'd say it would just be a few, but still not a good thing
 

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3/S car dealer/mechanic
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I have to agree I bet 99% you have bent valves. And the forward-reverse thing dosen't matter the only diffrence that it would make is that there is less RPM (usally) :) in reverse so it would be close to it breaking at idle.

You might want to pull your front valve cover and look and see if any of the roller rockers are really loose if they are that usally=bad news. Do you have a compression tester? You could take the gauge off and screw the hose into the cylinder and try to pressurize it and see if all the air just blows by the valves. Of course you would probally need to remove the roller rockers on each cylinder you want to pressurize. Or line it up so the cams are not holding them open.

If you want try that BE VERY careful you could move the cam and damage any unbent valves almost your best bet would be just to remove the front camshafts before trying to pressurize any of the cylinders. I would also check to make sure that with the placment of the back cams that they allow the crank to clear all the rear valves. If you use the air compresser to presurize the cylinders it forces the piston to the bottom of it's stroke thus frocing others up. you could take a rachet and LIGHTLY turn the crank and see if it will turn all the way around. If any resistance is felt do NOT force it.

It's most likley you are going to have to pull your heads so pulling the cams really is no big deal. If all the front 3 hold pressure then there is a good chance the rears are good as well. or you could just pop on the new belt and see if it fires up or not before reassembling any of the covers or anything I guess that wouldn't be that much work either.

Things can get REALLY nasty depending on the RPM when it broke. I have seen DSM's with holes in the pistons, valves broke off and embeded into the head, cylinder walls nicked to shit from the broken valve bouncing around in there. Many many bad things. I hate to tell people bad news and who knows you might be one of that 1% that gets luckey I a know I am not but I don't deal much with the 3000's either.
 

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UP THE IRONS!!!
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Short of her being at idle at a light or something when it happened.....the outlook isn't good, but I'll keep my fingers crossed for you. How many miles were on the belt BTW...if you know the dealer that did the last one, I'd give him a good kickin' if it was less than 60k. They are supposed to work at LEAST that long unless you modded your engine all to hell, then everything is void.
 

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Only Tonic is Chronic
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I wasnt saying that the foward/reverse thing mattered, just threw in that I was in reverse going slow and bent all the exhaust valves. So, going foward you would assume that there is a greater chance for damage...but not necessarly on the Intake valves. Sorry for that confusion ;)
 

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3/S car dealer/mechanic
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Actually our cars can go pretty fast in reverse and they do get a lil squirlly at speeds. I am SURE I am not the only one who has tried out the turbos in reverse:D If you never have you should try it sometime, it feels/sounds weird as hell just an unexpected feel of sudden aceleration in reverse is really throws you off.

Thinking on that it is probally not good for the trans for the reason that the trans is basically running dry on oil in reverse. The front diffrentel "pumps" the oil through the trans when moving forward. I really doubt it would break anything but there is always the possibility.

Can you belive my car lasted to 106k on the orginal T-belt :eek: I was REALLY scared driving it home the 20 miles from where I bought it.

Later,
James
 

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The timing belt on my old Talon broke while sitting at a light, nothing wrong with the engine other than the belt need to be replaced. So there is hope...
 

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perpetual college student
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my girlfriend's '97 Ford Escort just broke its timing belt, and there is no compression (as in zero!) in the far right cylinder, although the other 3 all have around 115
 

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Discussion Starter #10
Thanks for the info so far. I checked the rockers and they all seem tight right now. The cam turned over without any nioses or stops except the rewgular pressure from rockers rolling over the cam. Is there a way I can tighten the new belt without some special tool from Mistu? I'm hoping my luck is good again because I had a Laser that did this a few years back and it was just a belt. I'll let everyone know tomorrow night when it is either running or waiting to be sold!!
 

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Wrenchmonkey #839
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Small hope.

I the belt broke w/o jumping any teeth then there is a smal change the valves are OK because the valves will want to come to rest in closed position.

You are going to really want to pullyour heads and get a valve job.

My timign belt jumped 2 teeth and it soudned like really loud lifter tick. After tearing the engine doen I found marks on all of the pistons from intake valves not exhaust. I had teh heads done and only 2 valves would ot sseat after grinding.

They looked like this. W/O grinding you would not know if they were bent of not unless you installed a new belt and did a compression test.

 

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IDIC
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Is your car a DOHC or SOHC? If you're gonna sell email me at [email protected], located in ohio, might be interested
sheesh..didn't you just bring a TT home? ;) even _I_ waited a couple months in between cars =)

-Aaron
'94 R/T TT
'95 VR-4 Spyder
'95 Pearl Yellow R/T (belongs to Mom)
 
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