Sonicfrog Posted May 4, 2007 Share Posted May 4, 2007 On the 1'st gen legacy, I have lined up the marks, installed the timing belt, then cranked the engine a few times. Now I notice something curious. The three timing marks, two on the cams and the one on the crank, are still in sync and line up at the top, BUT, the belt marks are a few teeth off. Is this normal, or does this mean I have the wrong belt? The belt seems to fit the same as the old one, but I've not seen this before. Quote Link to comment Share on other sites More sharing options...
michaelbteam Posted May 4, 2007 Share Posted May 4, 2007 On the 1'st gen legacy, I have lined up the marks, installed the timing belt, then cranked the engine a few times. Now I notice something curious. The three timing marks, two on the cams and the one on the crank, are still in sync and line up at the top, BUT, the belt marks are a few teeth off. Is this normal, or does this mean I have the wrong belt? The belt seems to fit the same as the old one, but I've not seen this before.Count the teeth, should be right on. One tooth off and I've had it run rough, two teeth off and it wouldn't run. Line up the marks and count the teeth like the book says. Quote Link to comment Share on other sites More sharing options...
sea#3 Posted May 4, 2007 Share Posted May 4, 2007 Totally normal, the lines on the belt are for installation only. As long as your timing marks line up after installation and it runs, all is good . SEA#3 Quote Link to comment Share on other sites More sharing options...
Reveeen Posted May 4, 2007 Share Posted May 4, 2007 It seems to me, that some belt manufacturers kinda miss the mark, as far as marking the timing belt for installation. The last one I had here (from Beck-Arnley) seemed to be marked in a random fashon, so as to cover many models? I went with the engine timing marks, rotating the crankshaft twice (two turns) to verify correct installation (cams turn 1/2 crankshaft speed). Worked for me here on my '91 Legacy, though I admit to it taking 3 tries until I was "happy" (I was getting tired of collapsing the tensioner by the time I was done). Quote Link to comment Share on other sites More sharing options...
OB99W Posted May 4, 2007 Share Posted May 4, 2007 On the 1'st gen legacy, I have lined up the marks, installed the timing belt, then cranked the engine a few times. Now I notice something curious. The three timing marks, two on the cams and the one on the crank, are still in sync and line up at the top, BUT, the belt marks are a few teeth off. Is this normal, or does this mean I have the wrong belt? The belt seems to fit the same as the old one, but I've not seen this before.As long as you install the belt with the correct number of teeth between sprocket marks, and the marks remain in sync, the belt is properly installed and isn't jumping. The reason that the marks on the belt don't realign within a few crank cycles is that there are many more teeth on the belt than on the sprockets, and the marks aren't evenly spaced; it takes quite a few crank revolutions before the belt "comes around" again and its marks align, but it will happen if you're patient (and the battery charge is good ). Quote Link to comment Share on other sites More sharing options...
avk Posted May 4, 2007 Share Posted May 4, 2007 This topic now comes up almost as often as the parking lights that won't shut off. For the engine in question, it takes 422 revolutions of the crank for the marks to line up again. Quote Link to comment Share on other sites More sharing options...
uniberp Posted May 4, 2007 Share Posted May 4, 2007 This topic now comes up almost as often as the parking lights that won't shut off. For the engine in question, it takes 422 revolutions of the crank for the marks to line up again. Now THAT is detailed information. Quote Link to comment Share on other sites More sharing options...
ron917 Posted May 4, 2007 Share Posted May 4, 2007 This topic now comes up almost as often as the parking lights that won't shut off. For the engine in question, it takes 422 revolutions of the crank for the marks to line up again. Dude, don't tell me you counted that! Quote Link to comment Share on other sites More sharing options...
Olnick Posted May 4, 2007 Share Posted May 4, 2007 it takes 422 revolutions of the crank for the marks to line up again. Now that's funny. When I first read this thread I was sure someone knew the number or would calculate it. Thanks, avk! Quote Link to comment Share on other sites More sharing options...
Max Power Posted May 4, 2007 Share Posted May 4, 2007 I'm impressed! I lose count around 350. mp Quote Link to comment Share on other sites More sharing options...
avk Posted May 4, 2007 Share Posted May 4, 2007 Dude, don't tell me you counted that! No, it took me long enough to replace the timing belt as it was! But this came up a few times before and in a word, the number of turns is twice the number of teeth on the belt. That number (211 for original SOHC EJ) can be found in aftermarket parts catalogs, they give it for identification along with length and width of the belt. Quote Link to comment Share on other sites More sharing options...
Olnick Posted May 4, 2007 Share Posted May 4, 2007 the number of turns is twice the number of teeth on the belt. . Aw shoot, avk. You just took all the mystery and romance out of it. You should have told everyone you are a super genius mathematician! Anyway, thanks. You made my morning! Quote Link to comment Share on other sites More sharing options...
Sonicfrog Posted May 5, 2007 Author Share Posted May 5, 2007 ... and I guess I'm not the only one who has re-re-re-timed the car cause he (or she) thought there was something wrong:dead:. Quote Link to comment Share on other sites More sharing options...
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