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Evo X General General discussion on the 2008+ Mitsubishi Lancer Evolution X

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Old 06-17-2019, 09:41 PM   #11
scg
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Thanks for the tip. I'll read up some more on this tonight.
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Old 06-26-2019, 01:55 AM   #12
fyr3
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Thanks for the mention of datazap, will be useful as I begin my self tune route and solicit help from pros
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Old 09-15-2019, 06:40 PM   #13
scg
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Looks like I found my problem. From what I'm seeing, it appears that the pin on the camshaft that inserts into the MIVEC/cam gear assembly sheared off. I'll add some photos below. Because the pin was still jammed between the assembly and the housing, they did stay linked together, which is why the cam didn't spin independently of the gear. I think when I broke the pin off, the gear and the shaft became unaligned by about a tooth. This would explain a bad idle that sounded like the timing was off even though the timing seemed to be correct. The cam gears and crank were all aligned, but the camshaft was not aligned to the gear.

At a minimum, I'm replacing the exhaust gear/assembly, the cam shaft and the cam shaft bearing. I'm thinking I'll probably replace the timing chain and tensioner as well. This must have put an extreme amount of force on it to make this kind of damage happen and I'm concerned that the chain may be compromised. I have the old revision of the chain anyway, so getting the new one is probably a good idea "while I'm in there".

Also, worth mentioning is that I did do a compression check before taking everything apart and it was good. So, I don't have any reason to think there was any interference (valve damage).

Any thoughts on this plan? Is there anything else I should check or replace while I have everything off?

As always, I appreciate any advice.
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Old 09-15-2019, 09:39 PM   #14
razorlab
 
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To save a good amount of money, you can purchase the chrysler cam phasers. Same exact parts as Mitsubishi for A LOT less $$$.

Same with the cam bearing.


Cam phaser - Intake
Chrysler part # 5047021AA
Mitsubishi part #1147A010

Cam phaser - Exhaust
Chrysler part # 5047022AA
Mitsubishi part #1147A015

Cam phaser to camshaft bolts
Chrysler part #06509008AA
Mitsubishi #MN187128

Camshaft Bearing

Size 1 (black)
Chrysler #5047008AA
Mitsubishi #1016A030

Size 2 (colorless)
Chrysler #5047009AA
Mitsubishi #1016A031

Size 3 (Green)
Chrysler #5047010AA
Mitsubishi #1016A032
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Last edited by razorlab; 09-15-2019 at 09:42 PM.
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Old 09-16-2019, 05:01 AM   #15
scg
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Thanks. I knew there were some Chrysler parts in our cars that are much cheaper. I appreciate the list so I don't have to hunt them down.
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