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-   -   Broken cam head and sprocket. What caused it (https://www.ft86club.com/forums/showthread.php?t=137495)

Rabrooks 10-26-2019 09:03 PM
Broken cam head and sprocket. What caused it
 
Tearing down my engine and found this. Also found a spun rod bearing. 2013 frs 123k miles
What would cause it

Lantanafrs2 10-26-2019 10:00 PM
Was valve spring recall done?

Mr.ac 10-27-2019 01:58 AM
It could be a few things besides the common causes.
Some times it's due to poor metals, weak spots in the forging, machining, installation or just a bad luck.

soundman98 10-27-2019 02:07 AM
sumptin' got stuck. dat der stuckn' borked da cam geer.

humfrz 10-27-2019 10:25 PM
Quote:
Originally Posted by Rabrooks (Post 3269960)
Tearing down my engine and found this. Also found a spun rod bearing. 2013 frs 123k miles
What would cause it
Did the spun rod bearing lock up the engine?


humfrz

Rabrooks 11-07-2019 09:54 PM
Quote:
Originally Posted by humfrz (Post 3270244)
Did the spun rod bearing lock up the engine?


humfrz
No, Turns out the bearing was bad but didnt hurt the rod or the crank throw.

The knock was coming from the broken intake cam sprocket.


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