Disaster? Turned crank while cam was locked
08-06-2018, 01:47 PM
#1
4th Gear
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Join Date: Aug 2018
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Disaster? Turned crank while cam was locked
Help! This weekend I installed an IMS retrofit bearing, but after putting the chain tensionsers back in, I forgot to remove the cam locking tool before turning the crank with a wrench to remove any slack in the timing chain. The cam lock popped out, but I don't know if any damage was done. When the engine is locked at TDC, the line on the cam does still appear to be straight up and down. What should I do?
08-06-2018, 02:42 PM
#2
Rennlist Member
Post a picture
08-06-2018, 05:14 PM
#3
I would check the timing of both banks. TDC on bank 1 and then rotate 1 revolution and check the timing on bank 2. With the tensioners in it would seem improbable that the chain(s) would have jumped. As Byprodriver states, photos would help.
08-11-2018, 02:03 PM
#5
Rennlist Member
If the pic's were taken at TDC I can't see any problem with the timing. I would rotate the engine CLOCKWISE a couple revolutions back to TDC, if the cam timing notches still look the same you are fine.
08-17-2018, 02:48 PM
#7
Former Vendor
Turn the engine 720 degrees clockwise and repost a photo of the timing. On a 5 chain engine this is much more forgiving than a 3 chain, as the staking tool does not fully engage on the 5 chain.
We’ve had this happen in a class many, many times and the timing is usually retained. We actually try to make this happen in a class to show the attendees how easy this is to forget.
We’ve had this happen in a class many, many times and the timing is usually retained. We actually try to make this happen in a class to show the attendees how easy this is to forget.
