Engine "threw a rod" means... - JeepForum.com
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  • 1 Post By Mrtoyou
  • 1 Post By jtec
 
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post #1 of 10 Old 01-20-2020, 03:37 PM Thread Starter
car6car
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post #2 of 10 Old 01-20-2020, 05:12 PM
Mrtoyou
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And you call yourself a mechanic? It is also what happens when you spray starting fluid in an engine rather than actually correcting a problem. Please stop giving advice, you clearly have no idea what you are talking about.
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If I have to explain it, you probably won't understand anyway!
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post #3 of 10 Old 01-20-2020, 07:03 PM
Fourspeedman
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This is for all those that mistakenly thought this was a serious thread. It all begins with the oil not lubricating the babbit bearing. There needs to be a thin film of oil separating the connecting rod bearing surface from the crankshaft. When that oil film fails the crankshaft journal touches the bearing, creates heat, and grabs it. That causes the tiny locating tabs on the bearing babbits that hold them in place on the rods to break free. It usually spins along with the crankshaft but sometimes it sticks to the rod. Now that spot is a huge oil leak. Every time that cylinder fires the rod knocks against the crankshaft. That is the knocking sound that means your engine is skewered. Dumping STP in will quiet it as will keeping rpm's very low. Now the engine must come apart. If you do not stop operating the engine it will not wait and will come apart for you- often with a rod breaking and crashing into other expensive parts. Like the block. Now, you have "thrown a rod". JB WELD will not fix it and no one welds a block after that.

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post #4 of 10 Old 01-20-2020, 07:31 PM Thread Starter
car6car
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Quote:
Originally Posted by Fourspeedman View Post
JB WELD will not fix it and no one welds a block after that.
As far as I know iron blocks are not repairable, my Mazda block was aluminum and welding shop, which did the job, repaired them on regular basis.

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post #5 of 10 Old 01-20-2020, 07:36 PM Thread Starter
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Originally Posted by Mrtoyou View Post
And you call yourself a mechanic? It is also what happens when you spray starting fluid in an engine rather than actually correcting a problem.
do you know somebody who killed engine by spraying starting fluid? I used starting fluid many times, never had a problem.
I call myself "kind of mechanic" because i don't fix cars for people.

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post #6 of 10 Old 01-20-2020, 07:48 PM
Michaelj51
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Quote:
Originally Posted by car6car View Post
do you know somebody who killed engine by spraying starting fluid? I used starting fluid many times, never had a problem.
I call myself "kind of mechanic" because i don't fix cars for people.
Thanks for that!!
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post #7 of 10 Old 01-20-2020, 08:20 PM
Fourspeedman
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Was it some kind of rare block? Because taking it apart to fix the crank and whatever broke out the side then welding it closed seems like a lot of work when junkyard engines are available. I once spun a bearing in the middle of winter. I dumped two cans of STP in and then I limped to work keeping it under 1500 rpm so it would not knock. I grabbed a Pontiac 400 out of a junked GTO, cleaned it up, and over a long weekend swapped it in time for work Monday. I calculated the effort and amount of money to fix the spun bearing to be way more than that of the junkyard engine.

Mark in Queens- Home of Spiderman and the Ramones
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post #8 of 10 Old 01-21-2020, 09:41 AM Thread Starter
car6car
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Originally Posted by Fourspeedman View Post
Was it some kind of rare block?.
mazda 2.3 engines die all the time and pretty expensive from junk yard.

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post #9 of 10 Old 01-25-2020, 08:54 AM
CJ7-Tim
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Quote:
Originally Posted by car6car View Post
mazda 2.3 engines die all the time and pretty expensive from junk yard.
What kinda Jeep has a Mazda 2.3 in it ?

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post #10 of 10 Old 01-25-2020, 09:07 AM
jtec
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When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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