36 replies to this topic

[Slaywood]

So I was about to go to work this morning, started my car and hear a strange light ticking noise. I let it idle for a bit and it didn't go away. I turned the car off, and started it again, and it diminished slightly so I went on my way, being that I was late for work as it was. About 3/4 of a mile down the road the engine just shut off at 2500 RPM in 3rd. Pulled over to the side of the road and it wouldn't start. checked all of the car's vitals (Oil, temp, coolant, gas) and didn't find anything visibly wrong. I had been putting off the timing belt till this coming weekend. I figured it was a bad fuel pump or something, and had it towed to my house. I had a sinking feeling and just went ahead and popped the timing belt housing off and lo-and-behold the timing belt was shredded. That's what I get for waiting to do it, I know. All that aside, what do I need to do now? My brother is a mechanic and will take care of the labor for me, but what should I be ordering for parts in the meantime, and what are the chances nothing is destroyed? I didn't hear any abnormal sounds when it occurred, it just shut down. I don't want to have to bury my baby, I love this car.

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[Ihatespeedbumps]

These are interference engines, so bent valves are a possiblity.

The only option you have here is to line up the marks, install a new belt and see if you made it out ok. If not, compression test and find out which cylinder(s) have bent valves.

[Slaywood]

Yeah, unfortunately, hah. I'll have the belt at least first thing in the morning to install. no risk of breaking the new belt if it goes south trying to restart it is there?

[Ghost Shadow]

i think there is one member on vs that was lucky to have a belt snap and everything was ok. c70drv is his name iirc.

you have all the odds against you. "R" motors are going to cost a fortune. good luck.

[Keaton85]

135k! Thats a pretty long run. I had a car in with 125k and the original belt. Owner still didnt want to replace it!!

Anyway, you will habe bent valves. Just pull the head, get it redone and then reinstall it. Nothing major, just labor and some parts.

Parts list:
Timing belt
Rollers
Water pump
Cam seals
Head gasket
Intake and exhaust gaskets
Cam cover/holder sealent (volvo only)
Spark plug hole o-rings
VVT gasket
Thermostat gasket (housing)

Thats about it, the machine shop cab order valves and seals but you might be better off getting them yourself as they upcharge a lot!

you have all the odds against you. "R" motors are going to cost a fortune. good luck.

Why? Nothing extremey different then the other motors of this vintage on the top end..

[Ihatespeedbumps]

Anyway, you will habe bent valves. Just pull the head

Don't be an ass clown. I've seen 3 cars in the past year that had jumped belts, camshafts were WAY off and we were able to line them up with no bent valves. A couple hundred bucks is a better gamble than pulling the head off and finding out it would have been ok. SInce he mentioned his brother is a mechanic, I'm sure the labor will be signficiantly cheaper compared to your shade tree.

OP: Your belt probably broke because one of the pulleys locked up, so be sure to get both of those as well. Good luck and keep us posted.

[Jeph430]

OP: Your belt probably broke because one of the pulleys locked up, so be sure to get both of those as well. Good luck and keep us posted.

Timing belts should be sold in kits with these pulleys... While you're going to the trouble of replacing the belt, might as well do the other 2 important things in there too! (I guess 3 things, water pump as well)

[Jeph430]

Also, try to find someone with a borescope you could use. Pull the plugs and get a look down in there. If you see all kinds of goodies down in your cylinders, you're screwed

[Keaton85]

Don't be an ALL GLORY TO THE HYPNOTOAD clown. I've seen 3 cars in the past year that had jumped belts, camshafts were WAY off and we were able to line them up with no bent valves.

ALL GLORY TO THE HYPNOTOAD clown? Haha ok!

Anyway, look at the facts, the belt is totally off and he tried to start it. Ive lined up cams plenty of times before and there are very few spots that the lobs dont fully depress the lifter. A jumped belt can atleast get the valves a little bit out of the way before the piston hits TDC.

Its a good idea to toss on a belt and replace the busted roller. But im not trying to get his hopes up.

[MrWinkey]

Put the belt on it and see what happens .....It needs it anyway?

[Slaywood]

Thanks for the info and tips, we're pulling it apart tomorrow and going to see what we have got to deal with. I will keep you posted. And thanks for the shopping list... a little more extensive than what he told em to shop around for.

oh also, I don't know as though it snapped because of a pulley locking up, the belt had a piece that was hanging off that I believe was the ticking sound that I hear ticking on the belt housing and under stress of accelerating it just gave way. But I of course will be replacing the pulleys as well, no reason to not spend a few extra bucks to replace everything while I'm going to have all of that taken apart, I know I/he isn't going to want to do it again, lol.

[s10lowrider1994]

I'd advise against putting on the belt and "seeing what happens". If you have any internal damage trying to run the car even for a few seconds is going to do even more damage. You may or may not have bent valves, if you do you might end up destroying a piston as well if you havent already by trying to run the car without checking for any other damage. Sometimes the valves get bent, sometimes they dont, more often than not though they do receive damage. The safest way to go about it is to pull the head and see what you have and go from there. If nothing is damaged you're out a few bucks for a head gasket, with the probability of something being broken or bent though its really the correct way t go about it. You could put the belt on and cross your fingers but why chance it, especially if you have a mechanic at your disposal. Personally If I receive anything with a broken timing belt, the head comes off, no questions asked. Trying to cut corners and save time is just asking for trouble.

[s10lowrider1994]

Wanted to ad, 135k is far beyond what anyone should put on a timing belt. Not trying to give you a hard time but just maintaining it as needed would eliminate the headache you have now. I'm sure you're kicking yourself in the rear though, most folks dont realize how bad timing belt failure can be until they experience it first hand. $300 every few years for a timing belt kit sure beats rebuilding your engine.

[Slaywood]

Yeah, I can't undo what happened though, I learned my lesson.

Think that a volvo dealership has valves in stock for this?

[Hanks]

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Valves minimum are going to be 200$

[s10lowrider1994]

Yeah, I can't undo what happened though, I learned my lesson.

Think that a volvo dealership has valves in stock for this?

I would imagine Volvo stocks them, you'd have much better luck online though as many of the parts sources carry them a lot cheaper than the dealership. Never know though you might get lucky and have no damage, stranger things have happened. The majority of the time you end up with a bunch of bad valves and a little head work, I;ve seen them fly apart and do no damage at all on occasion, just depends where everything stops.

[MrWinkey]

I'd advise against putting on the belt and "seeing what happens". If you have any internal damage trying to run the car even for a few seconds is going to do even more damage. You may or may not have bent valves, if you do you might end up destroying a piston as well if you havent already by trying to run the car without checking for any other damage. Sometimes the valves get bent, sometimes they dont, more often than not though they do receive damage. The safest way to go about it is to pull the head and see what you have and go from there. If nothing is damaged you're out a few bucks for a head gasket, with the probability of something being broken or bent though its really the correct way t go about it. You could put the belt on and cross your fingers but why chance it, especially if you have a mechanic at your disposal. Personally If I receive anything with a broken timing belt, the head comes off, no questions asked. Trying to cut corners and save time is just asking for trouble.

sigh

[Keaton85]

sigh

informative!

[Ihatespeedbumps]

informative!

In one word he gave more information than 100 of your posts.

Simply amazing.

[Slaywood]

reply from mechanic brother: we tore into it last nightt: we pulled the cams and belt etc., so the valves would all be closed. then measured the height of all the lifters to see if any were hanging open (shorter than any others) and all measured good. then we took the hose from a compression tester with the core removed and blew air into all the cylinders. all were tight with almost zero leakage except for #4 which had a very slight hiss into the intake. i'm on the fence about that cylinder, as it could be a bit of carbon etc. holding the intake open?. i would have thought if it hit they would have catastrophically bent, not just barely tweaked enough to seep air. i reeeeeally don't want to pull the head if we can help it, but i want to do it once and do it right! we're going to locate a borescope to check for witness marks on the piston top and if there was contact the head is coming off. otherwise he's the luckiest person on the planet! and fwiw, i had every intention of changing the belt this week, swear to god! he asked me about doing it last week but i was on vacation, i can't believe it couldn't hold on for a couple more days! even if we hafta replace the 2 valves, we'll be out of it for less than the stealer would have charged to do the belt in the first place so thats a win, and most of the seals and gaskets were pretty cooked from all the heat so it will be sealed up nicely thanks for all your input, it was helpful, i just didnt like the idea of cranking the engine with so much stuff open and unplugged to do a compression test so i substituted air-