Timing Belt Marks

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JAP63

JAP63

E III Recaro Pilot
Joined
Oct 9, 2005
Messages
2,073
Location
Gold Coast
Question.....

When the 3 marks down the bottom of the motor are all aligned i notice that the camshaft has two sets of markings.

When everything is lined up down below,the exhaust cam has a notch at 3 oclock and 9 oclock..and the intake cam has a notch at 3 oclock and 9 oclock..nonetheless you always get the same one to line up...but why is there two?


the VFAQ only says to have the exhust at 3 o'clock and the intake at 9 o'colck so they face each other,it only talks about one set of marks.

anyone know?


am i correct in saying that all 3 marks downstairs must be lined up as well as the camshaft sprockets?
 
Question.....

When the 3 marks down the bottom of the motor are all aligned i notice that the camshaft has two sets of markings.

When everything is lined up down below,the exhaust cam has a notch at 3 oclock and 9 oclock..and the intake cam has a notch at 3 oclock and 9 oclock..nonetheless you always get the same one to line up...but why is there two?


the VFAQ only says to have the exhust at 3 o'clock and the intake at 9 o'colck so they face each other,it only talks about one set of marks.

anyone know?


am i correct in saying that all 3 marks downstairs must be lined up as well as the camshaft sprockets?
 
Question.....

When the 3 marks down the bottom of the motor are all aligned i notice that the camshaft has two sets of markings.

When everything is lined up down below,the exhaust cam has a notch at 3 oclock and 9 oclock..and the intake cam has a notch at 3 oclock and 9 oclock..nonetheless you always get the same one to line up...but why is there two?


the VFAQ only says to have the exhust at 3 o'clock and the intake at 9 o'colck so they face each other,it only talks about one set of marks.

anyone know?


am i correct in saying that all 3 marks downstairs must be lined up as well as the camshaft sprockets?
 
the correct marks line up at 3o'clock and 9'oclock when the cam sprocket dowell pins are at the 12 o'clock position (facing directly up) :wink: You'll notice one of the cams is still mid spin so you will need to use 2 spanners to hold them in position aligned to eachother, then bulldog clip the belt onto the sprockets - the belt will then hold the camshafts in place so you can then align the balance shaft sprockets/crank to the notches on the timing case when putting the belt on. Rob.
EDIT: I knew I answered this not long ago - download this :lol: http://4gtuner.com/forums/viewtopic.php?t=3282&highlight=timing
 
the correct marks line up at 3o'clock and 9'oclock when the cam sprocket dowell pins are at the 12 o'clock position (facing directly up) :wink: You'll notice one of the cams is still mid spin so you will need to use 2 spanners to hold them in position aligned to eachother, then bulldog clip the belt onto the sprockets - the belt will then hold the camshafts in place so you can then align the balance shaft sprockets/crank to the notches on the timing case when putting the belt on. Rob.
EDIT: I knew I answered this not long ago - download this :lol: http://4gtuner.com/forums/viewtopic.php?t=3282&highlight=timing
 
the correct marks line up at 3o'clock and 9'oclock when the cam sprocket dowell pins are at the 12 o'clock position (facing directly up) :wink: You'll notice one of the cams is still mid spin so you will need to use 2 spanners to hold them in position aligned to eachother, then bulldog clip the belt onto the sprockets - the belt will then hold the camshafts in place so you can then align the balance shaft sprockets/crank to the notches on the timing case when putting the belt on. Rob.
EDIT: I knew I answered this not long ago - download this :lol: http://4gtuner.com/forums/viewtopic.php?t=3282&highlight=timing
 
Speaking of which [insert twilight zone music here], I just found out about an hour ago that the engine I put together last week had a vibration around the 5000rpm mark. I was wondering what it was when we found out the timing belt was one tooth out and the vibration was the balance shaft. The car ran fine for a week and done 700km+ wearing in and had a slight miss but all is now fixed. So there you have it, I've done several 4G93/4G63's and never had a problem until now :oops: . I used to rip people off for getting the belt one tooth out and now it appears I have egg on my face too :lol: unless it skipped of course :lol:
 
Speaking of which [insert twilight zone music here], I just found out about an hour ago that the engine I put together last week had a vibration around the 5000rpm mark. I was wondering what it was when we found out the timing belt was one tooth out and the vibration was the balance shaft. The car ran fine for a week and done 700km+ wearing in and had a slight miss but all is now fixed. So there you have it, I've done several 4G93/4G63's and never had a problem until now :oops: . I used to rip people off for getting the belt one tooth out and now it appears I have egg on my face too :lol: unless it skipped of course :lol:
 
Speaking of which [insert twilight zone music here], I just found out about an hour ago that the engine I put together last week had a vibration around the 5000rpm mark. I was wondering what it was when we found out the timing belt was one tooth out and the vibration was the balance shaft. The car ran fine for a week and done 700km+ wearing in and had a slight miss but all is now fixed. So there you have it, I've done several 4G93/4G63's and never had a problem until now :oops: . I used to rip people off for getting the belt one tooth out and now it appears I have egg on my face too :lol: unless it skipped of course :lol:
 
What does this mean???

i just fit a drill bit between the tension arm and the tensioner that measures at 9mm!!!

does that mean my belt would be overtight?

or loose?

Thats how my mechanic (ex mechanic) had it setup....

ive been driving for around 6 months like this........
 
What does this mean???

i just fit a drill bit between the tension arm and the tensioner that measures at 9mm!!!

does that mean my belt would be overtight?

or loose?

Thats how my mechanic (ex mechanic) had it setup....

ive been driving for around 6 months like this........
 
What does this mean???

i just fit a drill bit between the tension arm and the tensioner that measures at 9mm!!!

does that mean my belt would be overtight?

or loose?

Thats how my mechanic (ex mechanic) had it setup....

ive been driving for around 6 months like this........
 
ahhh... that's just what he used as a spacer under the arm (just under the waterpump) which tightened the belt while he was doing the tensioner pulley up. That's just another way of doing it that works. Once the tensioner pulley is tightened he can pull the drill bit out and then turn the engine to check the tension before pulling the auto tensioner pin out (which shouldnt have any resistance at all).
 
ahhh... that's just what he used as a spacer under the arm (just under the waterpump) which tightened the belt while he was doing the tensioner pulley up. That's just another way of doing it that works. Once the tensioner pulley is tightened he can pull the drill bit out and then turn the engine to check the tension before pulling the auto tensioner pin out (which shouldnt have any resistance at all).
 
ahhh... that's just what he used as a spacer under the arm (just under the waterpump) which tightened the belt while he was doing the tensioner pulley up. That's just another way of doing it that works. Once the tensioner pulley is tightened he can pull the drill bit out and then turn the engine to check the tension before pulling the auto tensioner pin out (which shouldnt have any resistance at all).
 

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