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DISCUSSION => Engine + Driveline => Topic started by: Duct_Taper on March 16, 2009, 08:28:35 PM

Title: How does this timing gear look to you?
Post by: Duct_Taper on March 16, 2009, 08:28:35 PM

Pulled apart the valve cover and upper timing case tonight to check the timing chain, sprockets, and guides.  Looks to me like the chain is good, sprockets are good, guides are alright except the top of the one guide had some pieces broken off - which I found in the oil pan.  That was the only stuff I found in the pan though.  Thoughts?

(http://www.eng.uwaterloo.ca/~pdmckay/318iC/TC1.jpg)

(http://www.eng.uwaterloo.ca/~pdmckay/318iC/TC2.jpg)

(http://www.eng.uwaterloo.ca/~pdmckay/318iC/TC3.jpg)

(http://www.eng.uwaterloo.ca/~pdmckay/318iC/TC4.jpg)


Last question: does this look like a profile gasket problem waiting to happen?

(http://www.eng.uwaterloo.ca/~pdmckay/318iC/PG.jpg)

Title: How does this timing gear look to you?
Post by: tjts1 on March 16, 2009, 08:40:59 PM

Teeth are not sharp so it looks fine. Guide rail... not so much. Time for a new Has the tensioner been replaced yet?

Title: How does this timing gear look to you?
Post by: Duct_Taper on March 16, 2009, 10:38:52 PM

I haven't done the tensioner myself - no idea if it was ever done by the PO.

Title: How does this timing gear look to you?
Post by: Duct_Taper on March 17, 2009, 02:16:09 PM

Any thoughts about the profile gasket?  Should I be pulling the head and changing it?

Title: How does this timing gear look to you?
Post by: Jimmy Lewis on March 19, 2009, 03:34:47 PM

The gears look fine, they aren't sharp, and don't seem to be hooking, but then again the picture is dark and not very large. That said, it may not be a bad idea to just replace everything, kind of the "do it right the first time" approach. I wouldn't fret over the profile gasket too much, but if it makes you feel better, then do whatever you would like. I would certainly repalce the chain and rails though, and throw in a new tensioner when its all buttoned up.

Title: How does this timing gear look to you?
Post by: Jak318 on March 21, 2009, 05:12:17 PM

You do not need to replace those cam gears. The teeth are still squared, besides they may have been replaced already as they are the new replacement style.