Broken Serpentine Belt--overheat!
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Overlanding
Joined: Apr 2013
Posts: 21
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Broken Serpentine Belt--overheat!
Hey All!
First of all, please save all of the lecturing about changing the serpentine belt before it breaks, yada yada, I get it LOL. Was driving to work today and heard a faint pop. Immediately my speedo dropped to zero and my battery light came on. Strange I thought, but pressed on. Figured I was almost to the office and would investigate there. Shortly thereafter, I was alarmed to see the temperature light come on and was frightened to see the temp climbing quickly into the red zone! Pulled over that moment and shut her down. Didn't take me long under the hood to see that the serp belt had committed suicide, leaving the rest of the engine components in despair. After allowing enough time for the engine temp to creep down into the safe zone, fired it up and got enough momentum to coast in to work with the engine off.
My question really is: is this short period of overheating enough to do serious damage to the engine? I know these aluminum heads are sensitive, and so are the sleeves. I'm all wigged out about it now.
First of all, please save all of the lecturing about changing the serpentine belt before it breaks, yada yada, I get it LOL. Was driving to work today and heard a faint pop. Immediately my speedo dropped to zero and my battery light came on. Strange I thought, but pressed on. Figured I was almost to the office and would investigate there. Shortly thereafter, I was alarmed to see the temperature light come on and was frightened to see the temp climbing quickly into the red zone! Pulled over that moment and shut her down. Didn't take me long under the hood to see that the serp belt had committed suicide, leaving the rest of the engine components in despair. After allowing enough time for the engine temp to creep down into the safe zone, fired it up and got enough momentum to coast in to work with the engine off.
My question really is: is this short period of overheating enough to do serious damage to the engine? I know these aluminum heads are sensitive, and so are the sleeves. I'm all wigged out about it now.
Winching
Joined: Nov 2009
Posts: 595
Likes: 25
From: Philadelphia,Pa
thats a hard one to answer. I would get it all fixed, then do a pressure test after that, assuming you do not fail. I would do an exhaust gas in coolant test. Should that pass as well then for safety I would flush your coolant, put in a 180 thermo change out your oil and filter then go for a drive. Do you have an plug in temp gauge. If not I would buy one as well and get an actual read on your temps not the factory gauge.
Rock Crawling
Joined: Mar 2013
Posts: 452
Likes: 26
From: Oregon, north of Salem
You: "Strange I thought, but pressed on." YOU COMMITTED SIN NUMBER ONE, WHEN YOU "PRESSED ON." That is a no, no, a thing to never ever do, unless you don't mind risking wasting your engine. I know, you said no lecturing, but you deserved at least that much; lecturing is out of my system now; I feel better already.
You: "My question really is: is this short period of overheating enough to do serious damage to the engine? I know these heads are sensitive, and so are the sleeves."
Yes, ALL aluminum heads, Rover or otherwise, are prone to warping, when overheated. The sleeves, on the other hand, are not prone to any damage at all from the overheating, but the thin aluminum walls behind the cylinder liners, between them and the coolant jacket ARE "sensitive," in that they are likely to crack from such overheating issues, which, in turn, makes for a bit more room for liners to move within bored holes for liners, so if they can move, sometimes referred to as slipping, they may, due to piston/rings friction against inner walls of liners. The cracks in walls behind liners causes coolant to move downward, between the outside of liners and bored holes in aluminum, into the oil pan, as well as moving upward behind liners, & beyond the head gaskets, into the combustion chambers.
You: "is this short period of overheating enough to do serious damage to the engine?"
Yes it is more than enough time for damage as described above, but the important question is did it cause this damage? Nobody can tell you that, with certainty, unless they did some serious testing of the block, to assess if any cracking took place behind liners, and/or any warping of the heads took place. The only honest answer I can give you to your question, did damage happen? MAYBE! I personally wouldn't put a lot of money in it at this point, other than an obvious new belt, until it was definitely determined if damage has occurred. If it didn't, count your lucky blessings. If it did, chalk it off to experience; don't do this again in your lifetime, and send me a PM, and I will give you your options at that point, if you don't know them already.
You: "My question really is: is this short period of overheating enough to do serious damage to the engine? I know these heads are sensitive, and so are the sleeves."
Yes, ALL aluminum heads, Rover or otherwise, are prone to warping, when overheated. The sleeves, on the other hand, are not prone to any damage at all from the overheating, but the thin aluminum walls behind the cylinder liners, between them and the coolant jacket ARE "sensitive," in that they are likely to crack from such overheating issues, which, in turn, makes for a bit more room for liners to move within bored holes for liners, so if they can move, sometimes referred to as slipping, they may, due to piston/rings friction against inner walls of liners. The cracks in walls behind liners causes coolant to move downward, between the outside of liners and bored holes in aluminum, into the oil pan, as well as moving upward behind liners, & beyond the head gaskets, into the combustion chambers.
You: "is this short period of overheating enough to do serious damage to the engine?"
Yes it is more than enough time for damage as described above, but the important question is did it cause this damage? Nobody can tell you that, with certainty, unless they did some serious testing of the block, to assess if any cracking took place behind liners, and/or any warping of the heads took place. The only honest answer I can give you to your question, did damage happen? MAYBE! I personally wouldn't put a lot of money in it at this point, other than an obvious new belt, until it was definitely determined if damage has occurred. If it didn't, count your lucky blessings. If it did, chalk it off to experience; don't do this again in your lifetime, and send me a PM, and I will give you your options at that point, if you don't know them already.
Last edited by earlyrover; Feb 27, 2014 at 04:51 PM.
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Overlanding
Joined: Apr 2013
Posts: 21
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You: "Strange I thought, but pressed on." YOU COMMITTED SIN NUMBER ONE, WHEN YOU "PRESSED ON." That is a no, no, a thing to never ever do, unless you don't mind risking wasting your engine. I know, you said no lecturing, but you deserved at least that much; lecturing is out of my system now; I feel better already.
You: "My question really is: is this short period of overheating enough to do serious damage to the engine? I know these heads are sensitive, and so are the sleeves."
Yes, ALL aluminum heads, Rover or otherwise, are prone to warping, when overheated. The sleeves, on the other hand, are not prone to any damage at all from the overheating, but the thin aluminum walls behind the cylinder liners, between them and the coolant jacket ARE "sensitive," in that they are likely to crack from such overheating issues, which, in turn, makes for a bit more room for liners to move within bored holes for liners, so if they can move, sometimes referred to as slipping, they may, due to piston/rings friction against inner walls of liners. The cracks in walls behind liners causes coolant to move downward, between the outside of liners and bored holes in aluminum, into the oil pan, as well as moving upward behind liners, & beyond the head gaskets, into the combustion chambers.
You: "is this short period of overheating enough to do serious damage to the engine?"
Yes it is more than enough time for damage as described above, but the important question is did it cause this damage? Nobody can tell you that, with certainty, unless they did some serious testing of the block, to assess if any cracking took place behind liners, and/or any warping of the heads took place. The only honest answer I can give you to your question, did damage happen? MAYBE! I personally wouldn't put a lot of money in it at this point, other than an obvious new belt, until it was definitely determined if damage has occurred. If it didn't, count your lucky blessings. If it did, chalk it off to experience; don't do this again in your lifetime, and send me a PM, and I will give you your options at that point, if you don't know them already.
You: "My question really is: is this short period of overheating enough to do serious damage to the engine? I know these heads are sensitive, and so are the sleeves."
Yes, ALL aluminum heads, Rover or otherwise, are prone to warping, when overheated. The sleeves, on the other hand, are not prone to any damage at all from the overheating, but the thin aluminum walls behind the cylinder liners, between them and the coolant jacket ARE "sensitive," in that they are likely to crack from such overheating issues, which, in turn, makes for a bit more room for liners to move within bored holes for liners, so if they can move, sometimes referred to as slipping, they may, due to piston/rings friction against inner walls of liners. The cracks in walls behind liners causes coolant to move downward, between the outside of liners and bored holes in aluminum, into the oil pan, as well as moving upward behind liners, & beyond the head gaskets, into the combustion chambers.
You: "is this short period of overheating enough to do serious damage to the engine?"
Yes it is more than enough time for damage as described above, but the important question is did it cause this damage? Nobody can tell you that, with certainty, unless they did some serious testing of the block, to assess if any cracking took place behind liners, and/or any warping of the heads took place. The only honest answer I can give you to your question, did damage happen? MAYBE! I personally wouldn't put a lot of money in it at this point, other than an obvious new belt, until it was definitely determined if damage has occurred. If it didn't, count your lucky blessings. If it did, chalk it off to experience; don't do this again in your lifetime, and send me a PM, and I will give you your options at that point, if you don't know them already.
You all pretty much confirmed what I was thinking about the whole situation. It could have caused severe damage or it could not have. I really won't know until I put everything together and see how long it lasts. Really have been wanting to do a diesel conversion on this truck--possibly this will expedite that process :/ Fortunately I only paid $1500 for this truck so if the motor ends up needing replacement, it won't be terribly unfortunate. Just not as good as not needing to replace it LOL. Ugh, oh well. Thanks for chiming in!
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