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Old 10-10-2006, 08:11 PM   #1 (permalink)
SlyckTom
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Cam and Crank shaft timing position

Hi all,

I've posted previously about a timing belt job I did on my 93 Toyota
Corolla DX, 203,000 miles (automatic.) ( [url]http://tinyurl.co.uk/r6o7[/url] )
Since I've only owned the car for a short period, I've been suspicious
of a slight engine vibration. From the research I've conducted, this
appears to be very normal. I simply have not owned the car long
enough to remember if there was a vibration or not before I did the
timing belt job...

In any case, my speculation got the better of my and I decided to pull
the cam cover and see if the crank and cam timing tic marks match up.
Since its impossible to describe, I set the crank shaft pulley at 0
degrees and took the following pictures:

side view: [url]http://www.networkjournalism.com/images/side_view02.gif[/url]

top view: [url]http://www.networkjournalism.com/images/top_view01.gif[/url]

As you can tell from the side picture, the cam marking is virtually
dead on. However, it appears a bit left of center. Its not so
obvious from the top view.

If I move the crank shaft so the cam timing mark is more center (which
is a literally a millimeter of movement towards the right), the crank
moves a few degrees. I don't have much faith in the plastic timing
cover tho...when I removed it, it had some damage that I repaired -
therefore its shape may not be 100%.

In any case, my big concern and question is whether the pics fall
within the realm of acceptability. I was sure that it was lined up
when I did the job...but at tight angles its kinda tough to see
straight on.

Thank you all again. You guys are the only mechanics I trust.

Tom

 
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