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Old 03-31-2012, 02:07 AM   #161
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Seems to be right. I pulled the plugs and they do not indicate that it was rich.
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Old 03-31-2012, 03:13 AM   #162
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lean is a lot worse though lol
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Old 03-31-2012, 10:39 AM   #163
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Quote:
Originally Posted by 99mx5 View Post
Seems to be right. I pulled the plugs and they do not indicate that it was rich.
...rich at the time you shut down.
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Old 03-31-2012, 10:43 AM   #164
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Where are the pictures of the destroyed motor?
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Old 03-31-2012, 02:17 PM   #165
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Here are pics of the plugs from the tuning session the week before. The flash makes them look a bit whiter.

I'm pulling the engine out now. I expect to have it out later on today.
Here's a pic of the driver side of the block.
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99mx5 EFR build-dcp_5041.jpg   99mx5 EFR build-dcp_5039.jpg  
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Old 03-31-2012, 03:35 PM   #166
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Quote:
Originally Posted by 99mx5 View Post
Here are pics of the plugs from the tuning session the week before. The flash makes them look a bit whiter.

I'm pulling the engine out now. I expect to have it out later on today.
Here's a pic of the driver side of the block.
That hole is small, should be easy to jbweld over it to fix it.
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Old 03-31-2012, 05:59 PM   #167
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A little mesh and resin and she'll be ready to go.
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Old 04-01-2012, 01:56 AM   #168
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I just finished pulling the engine today. No 2 rod is gone! It broke near the top and snapped up to the underside of the piston and cracked it and it stuck at the top of the cylinder. The rest of the rod swung around and punched a hole in the cylinder and the driver side of the block and the oil pan. It also made a dent in the sub-frame cross member.
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99mx5 EFR build-dcp_5043.jpg   99mx5 EFR build-dcp_5046.jpg   99mx5 EFR build-dcp_5048.jpg   99mx5 EFR build-dcp_5047.jpg   99mx5 EFR build-dcp_5049.jpg  

99mx5 EFR build-dcp_5050.jpg   99mx5 EFR build-dcp_5051.jpg  
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Old 04-01-2012, 01:58 AM   #169
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throwing rods at under 10psi.
geez, them efr's are doin work
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Old 04-01-2012, 02:01 AM   #170
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Not only did No 2 rod fail, but No 3 is bent too.

More pics of today's fun. It looks like a mess but there is order.
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99mx5 EFR build-dcp_5052.jpg   99mx5 EFR build-dcp_5054.jpg   99mx5 EFR build-dcp_5053.jpg  
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Old 04-01-2012, 02:05 AM   #171
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Pics of pistons and rods. I had to grind one of the bolts off the No 2 rod to remove it.
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99mx5 EFR build-dcp_5055.jpg   99mx5 EFR build-dcp_5061.jpg   99mx5 EFR build-dcp_5063.jpg   99mx5 EFR build-dcp_5064.jpg   99mx5 EFR build-dcp_5066.jpg  

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Old 04-01-2012, 02:07 AM   #172
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Spare engine also taken apart.
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99mx5 EFR build-dcp_5034.jpg   99mx5 EFR build-dcp_5037.jpg   99mx5 EFR build-dcp_5038.jpg  
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Old 04-01-2012, 02:08 AM   #173
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I organized all the parts from both engines.
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99mx5 EFR build-dcp_5067.jpg   99mx5 EFR build-dcp_5068.jpg   99mx5 EFR build-dcp_5069.jpg  
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Old 04-01-2012, 02:10 AM   #174
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looks like you would have snapped the 3rd one too if #2 held up for a couple more minutes
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Old 04-01-2012, 02:11 AM   #175
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Now to order parts for the rebuild. Can the crank be reused after such an ordeal? The bearing journals on my crank are perfect, the spare crank will need some work because of a spun bearing.

Any piston and rod recommendations?
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Old 04-01-2012, 02:12 AM   #176
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Quote:
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looks like you would have snapped the 3rd one too if #2 held up for a couple more minutes
Yeah LOL! I was just thinking that.

Luckily, the head is undamaged.
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Old 04-01-2012, 09:41 AM   #177
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If the crank is not damaged then go for it. Bring it to a shop to check for trueness but other than that there should be no problems using it.
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Old 04-01-2012, 10:19 AM   #178
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A+ carnage thread.
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Old 04-01-2012, 11:06 AM   #179
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Can you explain why #4 is rotated the way it is?
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Old 04-01-2012, 01:48 PM   #180
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Good observation! It made me look twice. I realized in that pic, I haven't removed the oil pan at that point. I double checked the piston and rod and they are not twisted. It must be the reflection of the flash from the bore onto the piston. It you look closely at the bottom edge of the piston, you can see that the the relief cuts for the valves are lined up with the block. It also explains the bright part of the No 1 piston.
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