Can someone tell me what's wrong with this timing belt? - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Can someone tell me what's wrong with this timing belt? by rabbid79 on 09 Jul, 2008 22:25
• I purchased genuine VW sprockets and a timing belt to go on my 1.9 AAZ.  But when test fitting them it appears as though the teeth on the belt have the wrong pitch or something.  On small sections where the belt and sprockets meet, it's fine, but on larger sections you can see how they no longer mate.  Is this normal?  Once I put some force on it, will the belt stretch, or will the teeth soften up to where they mate properly, or do I somehow have the wrong belt?  Thanks for your input.
  
  
• #1 by Quantum TD on 09 Jul, 2008 23:30
• A few quick questions:
  1) did you buy the sprockets and belt from the same place?
  2) If not, do you think its possible that they sold you a belt from a 16v? They're the same width, but may have a different pitch.
  
  Personally, I'd hold my old sprockets up to the new ones to make sure they're the same. If they are, then your belt is wrong (as I would suspect).  Go get yourself a Continental (Conti) belt, or even a Gates if you can't find it.
  
  It may be the case that someone gave you a 1.6 belt instead. The gears are the same (I believe), but the 1.9 is taller, and should have more more teeth on it.
  
  Here's the 1.6 belt's PN: 068 109 119E
  And the 1.9 AAZ:           028 109 119P
  
  I think the 1.9 AAZ uses the same belt as the 1.9 AHU and 1Z (TDI engines).
• #2 by burn_your_money on 10 Jul, 2008 07:27
• I've never held a 1.9 and a 1.6 belt side by side but it is possible that they are the same length. The IM pulley is smaller on the 1.9
  
  As for your situation I would try your old timing belt on the new gears and go from there
• #3 by rabbid79 on 10 Jul, 2008 09:02
• Hi, this is one of those new 1.9s from Vanamania, so that's why I had to purchase new sprockets.  I purchased all of the parts from Auburn VW in Washington (1stvwparts.com).  The part number I ordered is 028109119P, and it is a Gates belt, but with VW/Audi stamping on it as well.  I guess I should go see if I can find the part number printed on the belt to make absolutely sure it's the right one.
• #4 by shegel on 10 Jul, 2008 10:16
• its nice for me because im about 15 minutes away from the auburn vw itself!!
• #5 by rabbid79 on 10 Jul, 2008 22:12
• More pics to show exactly which parts I have.  As far as I can tell, these are all the right parts for a 1.9 (AAZ or ABL).  Would someone with a real version of ETKA mind double checking these?  In the past I've always used vagcat.com, and it doesn't usually let me down.  Maybe this time it did?  Thanks.
  
  
  
• #6 by blkboostedtruck on 10 Jul, 2008 23:26
• try and bend the belt backwards so they lay in the grooves it's just a new belt don't be alarmed looks fine to me!
  try that 1 tooth at a time it should work! it just looks deceiving!
  Duane
• #7 by Turbinepowered on 11 Jul, 2008 06:13
• I recall I had a bit of trouble getting the teeth seated at first when I did the belt on the 1.5. Old sprockets,  new belt... just had to work it a little. Nothing serious, but I worked it tooth by tooth over the camshaft sprocket to get the teeth used to the idea.
• #8 by jimfoo on 11 Jul, 2008 07:47
• I have never had anything like that happen with a new belt. It doesn't look like it would fit to me. It could be mis-marked. I sure wouldn't run it on my engine that way!
• #9 by Vincent Waldon on 11 Jul, 2008 08:29
• My theory as well... the belt looks quite off, to my eyes.
• #10 by rabbid79 on 11 Jul, 2008 10:39
• Maybe I should go out and give it another try as was suggested.  What's funny is that it seems to fit fine on the first half of the sprocket with no signs of trouble.  Then on the second half it doesn't fit at all.  It's probably because I'm not trying hard enough, and is getting out of the grooves, which changes its circumference and makes it look like it doesn't fit at all.  Thanks for the replies.
• #11 by RabbitJockey on 11 Jul, 2008 14:18
• it all looks right, do u not have the injection pump on?  i think its just the angles ur holding it at.
• #12 by theman53 on 11 Jul, 2008 19:01
• I am not a diesel guru but the conti timing belts I have done always say not to do "that" to them. "That" I mean the pinch around the crank pulley your doing there. I had the guy I learned from throw a brand new timing belt away because I did that remarking how flexible it was. I was kinda pissed and since then thought it would have been fine, but just in case don't bend it smaller than the smallest pulley.