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Crank/Cam alignment

741 Views 22 Replies 5 Participants Last post by  aquanaut20

I had the timing belt fail (less than two years old- Ever Green brand). After opening up the cover, I can find no apparent reason for the failure...other than it being a crappy belt. When the belt broke, the engine died, so I'm hoping there was not valve to piston happened while coasting at very low speed. Is there an easy way to tell if there was damage without removing the head?

The FSM states to not turn the cam or crank independently of each other, however I need to align the "E" Dot on the cam gear and the Dot on the crank with the "arrow" I need to turn the gears independently of each other. Is this a potential problem?

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hope is good.... regretfully ASFAIK, the 16V is an interference motor, so damage could have happened.

once its all back together with a new belt and timed, then yes, a compression test will tell you immediately if valves are leaking (due to being bent) in one cylinder, lower reading compared to the others.

if the pistons are midstroke, no problem turning the cam as the pisotn crowns are far form valves. problems can arises if two of the pisotns are near TDC. take out the pligs and wiht a long screwdriver you can tell if you are near TDC.
The 16v is not interference.
I hear you, and i dont even have a G16B and never had a timing catastrofe in my +40 years of wrenching, but this is a FSM paragraph that many have seen:

"After timing belt is removed, never turn crankshaft and camshaft independently more than such an extent as shown in figure." (90 deg either side of the alignment marks) "If turned, interference may occur among piston and valves, and parts related to piston and valves may be damaged."

Thats why i added ASFAIK...

so you say its simply a carry over text from the car applications that have more compression? or is it because some actual personal experiecne with snapping a belt and living to tell the tale?
🔼 Good for Mr. Z!!!!
Hopefully you didnt install another ""Ever Green"" there again :rolleyes::oops:
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