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Re: blew it up
What kind of oil do you normally run?
I have a theory: I recently spun two rod bearings (happened after my cam install.) I've been told this could not be related to the cam install.
When they tore it apart, they found a significant amount of sludge built up.
The motor had 67k on it. They couldn't tell me for a fact what caused the rod bearing(s) to spin, it really is impossible to know for sure.
I had some significant lifter tick before this all happened, but no knock.
I 've been running fully synthetic oil not going too far over change intervals (5-6K) Since 25k or so.
I've also heard that too much heat, or too much mileage can break down synthetic oil. I don't run the engine into the ground by any means, although I do occasionally run it up hard. My question is: does synthetic oil break down too easily, possibly causing mechanical failure? Someone who babies the car EVERY mile and gets the oil changed RIGHT on time, EVERY time might not have any problems, but I had significant buildup not going too far over change intervals and pushing the car occasionally, not babying it every mile. I also had a badly ticking lifter, most likely a symptom of the overall problem.
Even if you don't run synthetic oil, you might want to consider this. There's nothing proven better than regular old motor oil. I had the EXACT same thing happen to my engine: knocking, engine failed, spun rod bearings. It needed new bearings, a new crank, 2 or 3 new rods, and thankfully nothing else.
What kind of oil do you normally run?
I have a theory: I recently spun two rod bearings (happened after my cam install.) I've been told this could not be related to the cam install.
When they tore it apart, they found a significant amount of sludge built up.
The motor had 67k on it. They couldn't tell me for a fact what caused the rod bearing(s) to spin, it really is impossible to know for sure.
I had some significant lifter tick before this all happened, but no knock.
I 've been running fully synthetic oil not going too far over change intervals (5-6K) Since 25k or so.
I've also heard that too much heat, or too much mileage can break down synthetic oil. I don't run the engine into the ground by any means, although I do occasionally run it up hard. My question is: does synthetic oil break down too easily, possibly causing mechanical failure? Someone who babies the car EVERY mile and gets the oil changed RIGHT on time, EVERY time might not have any problems, but I had significant buildup not going too far over change intervals and pushing the car occasionally, not babying it every mile. I also had a badly ticking lifter, most likely a symptom of the overall problem.
Even if you don't run synthetic oil, you might want to consider this. There's nothing proven better than regular old motor oil. I had the EXACT same thing happen to my engine: knocking, engine failed, spun rod bearings. It needed new bearings, a new crank, 2 or 3 new rods, and thankfully nothing else.
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