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View Full Version : tooth count on cambelt, is the manual wrong?


allante666
10-31-2010, 01:13 PM
Ok, Ive just taken off my cambelt in search of this lumpy idle of mine, figured I might as well put a new one on while im in there. The old belt has had all the markings rubbed off it. I wanted to just pop it back on temporarily to see if realigning the timing helped (im not sure if it was correct or not as I was using a socket to wind it round to line up the marks, for the last bit I put th esocket on the rh cam gear and due to way the tension is set up it slipped some teeth on the crank sprocket)
Ive ordered a new belt so hopefully it will have the markings on it. Anyway, looking in the manual, it states that the tooth gap between timing marks on the belt is 44 teeth from RH cam to Crank, and 40.5 teeth from crank to LH cam. I counted and marked these on the belt and offered it up...no way! it is impossible to line up those marks whilst keeping the three sprockets lined up with the marks on the crankcase., Is the manual wrong? does anyone have a belt from a 2.5 NA SOHC engine with marks they could count the teeth between for me?
Or am i missing something?
Huffer
10-31-2010, 02:51 PM
Just a suggestion, perhaps the timing belt that you had on there was the wrong belt for your car to begin with.
allante666
10-31-2010, 03:30 PM
no its not that, its just that if you try and line up the marks with the sprockets, theres no way they are only 44 and 40.5 teeth apart. the length of the belt wouldnt matter as the teeth are the same size as the ones on the sprockets.
Grafton
10-31-2010, 08:26 PM
no its not that, its just that if you try and line up the marks with the sprockets, theres no way they are only 44 and 40.5 teeth apart. the length of the belt wouldnt matter as the teeth are the same size as the ones on the sprockets.

yes way, my new non-oem timing belt had no marks so i threw it on there and counted 44 and 40.5 is 100% correct for the sohc engines
allante666
10-31-2010, 08:34 PM
Dont forget mines a 2.5. may be different..
Grafton
11-01-2010, 10:47 AM
Dont forget mines a 2.5. may be different..
i've done timing belts on the sohc 2.5's they use the the same # of teeth, i know it doesn't look like it on (seems too short) or off (seems too long) the motor but it works out

the dohc is different though
allante666
11-02-2010, 07:27 AM
well, Ill take your word for it until I get the new belt. I can see how the piece from the crank to the LH sprocket can fit as theres the tensioner between them but I just cant see how th epart from RH sprocket to crank is gonna stretch. Ill wait and see, should be here tomorrow
allante666
11-03-2010, 07:35 PM
New belt came. I was right. Tooth gaps are 47 and 44.5 (and it fits)
Grafton
11-04-2010, 03:50 PM
what year is it?

the 47 / 44 count is *i think* 03 and up

go figure
allante666
11-04-2010, 05:42 PM
its a 2000.
I just noticed that my RH head has been off before and the sprocket is plastic whereas the other one is steel. is this a problem at all?
Grafton
11-04-2010, 09:53 PM
its a 2000.
I just noticed that my RH head has been off before and the sprocket is plastic whereas the other one is steel. is this a problem at all?
not if it's running right :D
allante666
11-05-2010, 04:39 AM
I wish!!