Re: SD Ever break a roller cam?
SD Ever break a roller cam? he discovered that the roller cam had snapped between the area around the last 2 lobes. I agree with all that has been written in replies about this so far. But to shed a little more light on this, my 90 VNT Daytona Shelby has broken 2 cams. The first one shortly after I bought the car (in 2000), at about 88K miles. That cam was replaced with a used stock T2 roller cam. I wanted to thank everyone who responded for the great information. I don't think the head had any warping issues since it's never overheated since she's owned it. The mechanic who fixed it went by the by the textbook approach of having a machine shop look at it even though my instincts and prior experience told me it wasn't warped. They said they're was a slight imperfection that they smoothed over but I think that might be translated into the machine shop making sure they at least generate a little bit revenue from the customer. From this data it would seem that a casting defect in the camshaft was to blame and maybe it was accentuated by having the timing belt snap while driving and possibly by being reinstalled too tight. So far it's been running well and it was nice to provide her some firsthand information from some of the most experienced owners of 2.2/2.5 powered vehicles out there instead of general purpose mechanic confusing the characteristics of other 4 cylinder engines. David Salamone Positive Impressions PO Box 441761 Jacksonville, Florida 3 904-388-4040 phone [EMAIL PROTECTED] ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
SD Ever break a roller cam?
Last year my sister had her high mileage car break down for good and she was in need of a new daily driver. A local friend knew of a good deal on a 2.5 powered minivan so I thought it would be a dependable vehicle for her. I use one myself for m company minivan and it's been quite good with me. It's been pretty reliable thus far but recently she's been had an unusual problem that's been making her feel that it may be headed for a serious and expensive engine repair (which she can't afford since she was laid off recently). Last month without any prior warning signs it stalled out and wouldn't restart. I went to take a quick look at it for her and discovered it was a pretty simple problem, the timing belt had broken. Well that was common enough and it wasn't complicated or expensive to repair so I didn't feel it was an unusual. The repairs went fine and it was back on the road and running fine within days but what happened next I thought was real unusual. Again it stalled out and wouldn't restart. I pulled the inspection plug from the upper timing belt cover and the upper cam gear was turning so I knew the timing belt was turning. She had it towed to a shop where their immediate diagnosis was a blown head gasket. This made little sense to me since there was no warning signs and it had no history of or sudden last minute overheating or smoking. They said they ran a compression check and two cylinders were getting little to no pressure. I didn't feel that was the right diagnosis so she had a mechanic friend of hers work on it at his house. He somewhat agreed with their theory but when the head was pulled the head gasket looked perfect. Upon further inspection (which should have noticed once the valve cover was removed) he discovered that the roller cam had snapped between the area around the last 2 lobes. In a regular stock setup without extreme driving conditions I don't seem to recall seeing camshafts breaking like that. I supplied a decent 2.5 used roller cam that he reinstalled the head gasket cam and it's back to running normally. Someone told her that this was a sign that the bottom end of the motor would be going out soon and the engine was on borrowed time. I was thinking that the cam breakage was just a fluke and possibly due to stress caused by the timing belt breaking and wouldn't have a direct influence on the lower end of the engine. Has anybody had any experiences with camshafts snapping under routine driving? If so are they having other engine problems later? David Salamone Positive Impressions Jacksonville, Florida [EMAIL PROTECTED] 1982 Rampage (dual carb ongoing taking forever project show car) 1987 Shelby CSX #172 (awaiting front end bodywork, but with low miles) 1994 Voyager 2.5 (the company minivan, alive once again with another 2.5) 1979 Dodge Omni 1.7 (backup getaround car when other stuff breaks) ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
Re: SD Ever break a roller cam?
David, I have seen this quite a few times working at the dealer and everyone broke in the same exact place, between the intake and exhaust lobe of the #1 cylinder. While I haven't seen it in a few years because of the decline of the 2.2 and 2.5 powered cars every once and a while it will pop up. A cam swap was all that was needed and the cars went back on the road. The first one got a new cam but after that they would come to me for a deal on a used cam for the car. You don't even need to change the followers, just the cam and you on your way. Hope this helps. Cliff Ramsdell In a message dated 4/4/2006 9:15:50 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: Last year my sister had her high mileage car break down for good and she was in need of a new daily driver. A local friend knew of a good deal on a 2.5 powered minivan so I thought it would be a dependable vehicle for her. I use one myself for m company minivan and it's been quite good with me. It's been pretty reliable thus far but recently she's been had an unusual problem that's been making her feel that it may be headed for a serious and expensive engine repair (which she can't afford since she was laid off recently). Last month without any prior warning signs it stalled out and wouldn't restart. I went to take a quick look at it for her and discovered it was a pretty simple problem, the timing belt had broken. Well that was common enough and it wasn't complicated or expensive to repair so I didn't feel it was an unusual. The repairs went fine and it was back on the road and running fine within days but what happened next I thought was real unusual. Again it stalled out and wouldn't restart. I pulled the inspection plug from the upper timing belt cover and the upper cam gear was turning so I knew the timing belt was turning. She had it towed to a shop where their immediate diagnosis was a blown head gasket. This made little sense to me since there was no warning signs and it had no history of or sudden last minute overheating or smoking. They said they ran a compression check and two cylinders were getting little to no pressure. I didn't feel that was the right diagnosis so she had a mechanic friend of hers work on it at his house. He somewhat agreed with their theory but when the head was pulled the head gasket looked perfect. Upon further inspection (which should have noticed once the valve cover was removed) he discovered that the roller cam had snapped between the area around the last 2 lobes. In a regular stock setup without extreme driving conditions I don't seem to recall seeing camshafts breaking like that. I supplied a decent 2.5 used roller cam that he reinstalled the head gasket cam and it's back to running normally. Someone told her that this was a sign that the bottom end of the motor would be going out soon and the engine was on borrowed time. I was thinking that the cam breakage was just a fluke and possibly due to stress caused by the timing belt breaking and wouldn't have a direct influence on the lower end of the engine. Has anybody had any experiences with camshafts snapping under routine driving? If so are they having other engine problems later? David Salamone Positive Impressions Jacksonville, Florida [EMAIL PROTECTED] 1982 Rampage (dual carb ongoing taking forever project show car) 1987 Shelby CSX #172 (awaiting front end bodywork, but with low miles) 1994 Voyager 2.5 (the company minivan, alive once again with another 2.5) 1979 Dodge Omni 1.7 (backup getaround car when other stuff breaks) ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
Re: SD Ever break a roller cam?
One extra step I would do if it is a used cam is to install the camshaft without the followers and make sure it is not bent. It should turn evenly without binding. [EMAIL PROTECTED] said: David, I have seen this quite a few times working at the dealer and everyone broke in the same exact place, between the intake and exhaust lobe of the #1 cylinder. While I haven't seen it in a few years because of the decline of the 2.2 and 2.5 powered cars every once and a while it will pop up. A cam swap was all that was needed and the cars went back on the road. The first one got a new cam but after that they would come to me for a deal on a used cam for the car. You don't even need to change the followers, just the cam and you on your way. Hope this helps. Cliff Ramsdell In a message dated 4/4/2006 9:15:50 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: Last year my sister had her high mileage car break down for good and she was in need of a new daily driver. A local friend knew of a good deal on a 2.5 powered minivan so I thought it would be a dependable vehicle for her. I use one myself for m company minivan and it's been quite good with me. It's been pretty reliable thus far but recently she's been had an unusual problem that's been making her feel that it may be headed for a serious and expensive engine repair (which she can't afford since she was laid off recently). Last month without any prior warning signs it stalled out and wouldn't restart. I went to take a quick look at it for her and discovered it was a pretty simple problem, the timing belt had broken. Well that was common enough and it wasn't complicated or expensive to repair so I didn't feel it was an unusual. The repairs went fine and it was back on the road and running fine within days but what happened next I thought was real unusual. Again it stalled out and wouldn't restart. I pulled the inspection plug from the upper timing belt cover and the upper cam gear was turning so I knew the timing belt was turning. She had it towed to a shop where their immediate diagnosis was a blown head gasket. This made little sense to me since there was no warning signs and it had no history of or sudden last minute overheating or smoking. They said they ran a compression check and two cylinders were getting little to no pressure. I didn't feel that was the right diagnosis so she had a mechanic friend of hers work on it at his house. He somewhat agreed with their theory but when the head was pulled the head gasket looked perfect. Upon further inspection (which should have noticed once the valve cover was removed) he discovered that the roller cam had snapped between the area around the last 2 lobes. In a regular stock setup without extreme driving conditions I don't seem to recall seeing camshafts breaking like that. I supplied a decent 2.5 used roller cam that he reinstalled the head gasket cam and it's back to running normally. Someone told her that this was a sign that the bottom end of the motor would be going out soon and the engine was on borrowed time. I was thinking that the cam breakage was just a fluke and possibly due to stress caused by the timing belt breaking and wouldn't have a direct influence on the lower end of the engine. Has anybody had any experiences with camshafts snapping under routine driving? If so are they having other engine problems later? David Salamone Positive Impressions Jacksonville, Florida [EMAIL PROTECTED] 1982 Rampage (dual carb ongoing taking forever project show car) 1987 Shelby CSX #172 (awaiting front end bodywork, but with low miles) 1994 Voyager 2.5 (the company minivan, alive once again with another 2.5) 1979 Dodge Omni 1.7 (backup getaround car when other stuff breaks) ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html Thanks, Russ ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
Re: SD Ever break a roller cam?
I had a roller cam break on my 1988 Sundance T1 about three years ago. I was sitting at a traffic light when the engine suddenly stopped. Prior to the traffic light, I was in stop-and-go traffic. When I tried to re-start, only the starter turned. I pushed the car into a gas station and popped the hood and noted that the timing belt and distributor did not turn when the engine was cranked. Had the car towed home and found that the camshaft was broken betwwen the intake and exhaust lobe of the #1 cylinder. The broken cam reduced the tension on the timing belt just enough so that the timing belt disengaged. The broken cam was original. No issues with the top or bottom end of the engine after the camshaft was replaced 20K ago. Wayne Toy On Tue, 4 Apr 2006, David Salamone wrote: Last year my sister had her high mileage car break down for good and she was in need of a new daily driver. A local friend knew of a good deal on a 2.5 powered minivan so I thought it would be a dependable vehicle for her. I use one myself for m company minivan and it's been quite good with me. It's been pretty reliable thus far but recently she's been had an unusual problem that's been making her feel that it may be headed for a serious and expensive engine repair (which she can't afford since she was laid off recently). Last month without any prior warning signs it stalled out and wouldn't restart. I went to take a quick look at it for her and discovered it was a pretty simple problem, the timing belt had broken. Well that was common enough and it wasn't complicated or expensive to repair so I didn't feel it was an unusual. The repairs went fine and it was back on the road and running fine within days but what happened next I thought was real unusual. Again it stalled out and wouldn't restart. I pulled the inspection plug from the upper timing belt cover and the upper cam gear was turning so I knew the timing belt was turning. She had it towed to a shop where their immediate diagnosis was a blown head gasket. This made little sense to me since there was no warning signs and it had no history of or sudden last minute overheating or smoking. They said they ran a compression check and two cylinders were getting little to no pressure. I didn't feel that was the right diagnosis so she had a mechanic friend of hers work on it at his house. He somewhat agreed with their theory but when the head was pulled the head gasket looked perfect. Upon further inspection (which should have noticed once the valve cover was removed) he discovered that the roller cam had snapped between the area around the last 2 lobes. In a regular stock setup without extreme driving conditions I don't seem to recall seeing camshafts breaking like that. I supplied a decent 2.5 used roller cam that he reinstalled the head gasket cam and it's back to running normally. Someone told her that this was a sign that the bottom end of the motor would be going out soon and the engine was on borrowed time. I was thinking that the cam breakage was just a fluke and possibly due to stress caused by the timing belt breaking and wouldn't have a direct influence on the lower end of the engine. Has anybody had any experiences with camshafts snapping under routine driving? If so are they having other engine problems later? David Salamone Positive Impressions Jacksonville, Florida [EMAIL PROTECTED] 1982 Rampage (dual carb ongoing taking forever project show car) 1987 Shelby CSX #172 (awaiting front end bodywork, but with low miles) 1994 Voyager 2.5 (the company minivan, alive once again with another 2.5) 1979 Dodge Omni 1.7 (backup getaround car when other stuff breaks) ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
Re: SD Ever break a roller cam?
A good idea but one thing comes to mind. Could be a warped head, I have seen the head be bent and the cam saddles be off but usually after a severe overheat condition and then the head was resurfaced. I have never seen a bent camshaft yet, the word yet is there for a reason but this would be a first case if you found one. A straight edge laid in the cam saddles and if you can across the journals would tell the story there but if the failure in between the lobes this has been a point of continued failures with roller cams and I wouldn't loose sleep over it all. Cliff Ramsdell In a message dated 4/4/2006 10:18:28 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: One extra step I would do if it is a used cam is to install the camshaft without the followers and make sure it is not bent. It should turn evenly without binding. [EMAIL PROTECTED] said: David, I have seen this quite a few times working at the dealer and everyone broke in the same exact place, between the intake and exhaust lobe of the #1 cylinder. While I haven't seen it in a few years because of the decline of the 2.2 and 2.5 powered cars every once and a while it will pop up. A cam swap was all that was needed and the cars went back on the road. The first one got a new cam but after that they would come to me for a deal on a used cam for the car. You don't even need to change the followers, just the cam and you on your way. Hope this helps. Cliff Ramsdell In a message dated 4/4/2006 9:15:50 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: Last year my sister had her high mileage car break down for good and she was in need of a new daily driver. A local friend knew of a good deal on a 2.5 powered minivan so I thought it would be a dependable vehicle for her. I use one myself for m company minivan and it's been quite good with me. It's been pretty reliable thus far but recently she's been had an unusual problem that's been making her feel that it may be headed for a serious and expensive engine repair (which she can't afford since she was laid off recently). Last month without any prior warning signs it stalled out and wouldn't restart. I went to take a quick look at it for her and discovered it was a pretty simple problem, the timing belt had broken. Well that was common enough and it wasn't complicated or expensive to repair so I didn't feel it was an unusual. The repairs went fine and it was back on the road and running fine within days but what happened next I thought was real unusual. Again it stalled out and wouldn't restart. I pulled the inspection plug from the upper timing belt cover and the upper cam gear was turning so I knew the timing belt was turning. She had it towed to a shop where their immediate diagnosis was a blown head gasket. This made little sense to me since there was no warning signs and it had no history of or sudden last minute overheating or smoking. They said they ran a compression check and two cylinders were getting little to no pressure. I didn't feel that was the right diagnosis so she had a mechanic friend of hers work on it at his house. He somewhat agreed with their theory but when the head was pulled the head gasket looked perfect. Upon further inspection (which should have noticed once the valve cover was removed) he discovered that the roller cam had snapped between the area around the last 2 lobes. In a regular stock setup without extreme driving conditions I don't seem to recall seeing camshafts breaking like that. I supplied a decent 2.5 used roller cam that he reinstalled the head gasket cam and it's back to running normally. Someone told her that this was a sign that the bottom end of the motor would be going out soon and the engine was on borrowed time. I was thinking that the cam breakage was just a fluke and possibly due to stress caused by the timing belt breaking and wouldn't have a direct influence on the lower end of the engine. Has anybody had any experiences with camshafts snapping under routine driving? If so are they having other engine problems later? David Salamone Positive Impressions Jacksonville, Florida [EMAIL PROTECTED] 1982 Rampage (dual carb ongoing taking forever project show car) 1987 Shelby CSX #172 (awaiting front end bodywork, but with low miles) 1994 Voyager 2.5 (the company minivan, alive once again with another 2.5) 1979 Dodge Omni 1.7 (backup getaround car when other stuff breaks) ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html Thanks, Russ ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
Re: SD Ever break a roller cam?
Had this happen to myself too! Fired up the car (90 Daytona) It was the middle of winter, about 15C below. car ran fine, drove about 2kms, and she up and died, rolled it over, and it sounded like the timing belt was gone, So we pulled the timing belt cover off, and the cam sprocket was hanging out the head about an inch more than it should be!!! Swapped the cam out, and away we go. Car is still running today, and that was about 2 years ago now!! Later, Sean - Original Message - From: David Salamone [EMAIL PROTECTED] To: Shelby Dodge Mailing List shelby-dodge@imagicomm.com Sent: Tuesday, April 04, 2006 9:16 AM Subject: SD Ever break a roller cam? Last year my sister had her high mileage car break down for good and she was in need of a new daily driver. A local friend knew of a good deal on a 2.5 powered minivan so I thought it would be a dependable vehicle for her. I use one myself for m company minivan and it's been quite good with me. It's been pretty reliable thus far but recently she's been had an unusual problem that's been making her feel that it may be headed for a serious and expensive engine repair (which she can't afford since she was laid off recently). Last month without any prior warning signs it stalled out and wouldn't restart. I went to take a quick look at it for her and discovered it was a pretty simple problem, the timing belt had broken. Well that was common enough and it wasn't complicated or expensive to repair so I didn't feel it was an unusual. The repairs went fine and it was back on the road and running fine within days but what happened next I thought was real unusual. Again it stalled out and wouldn't restart. I pulled the inspection plug from the upper timing belt cover and the upper cam gear was turning so I knew the timing belt was turning. She had it towed to a shop where their immediate diagnosis was a blown head gasket. This made little sense to me since there was no warning signs and it had no history of or sudden last minute overheating or smoking. They said they ran a compression check and two cylinders were getting little to no pressure. I didn't feel that was the right diagnosis so she had a mechanic friend of hers work on it at his house. He somewhat agreed with their theory but when the head was pulled the head gasket looked perfect. Upon further inspection (which should have noticed once the valve cover was removed) he discovered that the roller cam had snapped between the area around the last 2 lobes. In a regular stock setup without extreme driving conditions I don't seem to recall seeing camshafts breaking like that. I supplied a decent 2.5 used roller cam that he reinstalled the head gasket cam and it's back to running normally. Someone told her that this was a sign that the bottom end of the motor would be going out soon and the engine was on borrowed time. I was thinking that the cam breakage was just a fluke and possibly due to stress caused by the timing belt breaking and wouldn't have a direct influence on the lower end of the engine. Has anybody had any experiences with camshafts snapping under routine driving? If so are they having other engine problems later? David Salamone Positive Impressions Jacksonville, Florida [EMAIL PROTECTED] 1982 Rampage (dual carb ongoing taking forever project show car) 1987 Shelby CSX #172 (awaiting front end bodywork, but with low miles) 1994 Voyager 2.5 (the company minivan, alive once again with another 2.5) 1979 Dodge Omni 1.7 (backup getaround car when other stuff breaks) ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
Re: SD Ever break a roller cam?
I had one break in my '87 CSX. I think it was between cylinders 1 and 2, if I remember right. I can confirm that a 2.2L will run on one cylinder, but not very well or for very long. :) My opinion is that it is often caused by too much tension on the timing belt. I'm pretty sure that was the case for me. I now have one of the tensioning tools. David Reynolds Centralia, IL '87 CSX #321, '89 CSX-VNT #321, '04 SRT-4, '82 Rampage project, '98 Grand Voyager http://www.systemware.com/ ---REMOVE-FOOTER-WHEN-REPLYING Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html
