Timing Belt Marks

4GTuner

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by the way

Of course,the bottom pulleys got moved while the belt was off them,only slightly though....

the top is still OK though...so should i just turn the crank pulley and the one next to it (on the right) back to where the marker is and put the belt on,i can see where the belt went,i put white marks on it.
 
by the way

Of course,the bottom pulleys got moved while the belt was off them,only slightly though....

the top is still OK though...so should i just turn the crank pulley and the one next to it (on the right) back to where the marker is and put the belt on,i can see where the belt went,i put white marks on it.
 
by the way

Of course,the bottom pulleys got moved while the belt was off them,only slightly though....

the top is still OK though...so should i just turn the crank pulley and the one next to it (on the right) back to where the marker is and put the belt on,i can see where the belt went,i put white marks on it.
 
JAP63 said:
so your saying having a 9mm gap is ok even though the VFAQ and manual says a max of 3.8 to 4.5mm?
You're referring to the extension out of the hydraulic tensioner once the pin has been removed. Your mechanic is talking about a 9mm spacer under the arm to place tension on the belt while tightening the tensioner pulley. Once the pulley is tightened the timing belt is at tension - then you pull out the pin from the hydraulic tensioner which should come out only 3.8-4.5mm - the pin in fact should slide out easily.

To answer your 2nd post, yes. Line up the cam sprockets first and place the belt over them (use bulldog clips etc to hold the belt in place). Then line up the crank and balance shaft to the marks on the timing case and feed the belt around them.
 
JAP63 said:
so your saying having a 9mm gap is ok even though the VFAQ and manual says a max of 3.8 to 4.5mm?
You're referring to the extension out of the hydraulic tensioner once the pin has been removed. Your mechanic is talking about a 9mm spacer under the arm to place tension on the belt while tightening the tensioner pulley. Once the pulley is tightened the timing belt is at tension - then you pull out the pin from the hydraulic tensioner which should come out only 3.8-4.5mm - the pin in fact should slide out easily.

To answer your 2nd post, yes. Line up the cam sprockets first and place the belt over them (use bulldog clips etc to hold the belt in place). Then line up the crank and balance shaft to the marks on the timing case and feed the belt around them.
 
JAP63 said:
so your saying having a 9mm gap is ok even though the VFAQ and manual says a max of 3.8 to 4.5mm?
You're referring to the extension out of the hydraulic tensioner once the pin has been removed. Your mechanic is talking about a 9mm spacer under the arm to place tension on the belt while tightening the tensioner pulley. Once the pulley is tightened the timing belt is at tension - then you pull out the pin from the hydraulic tensioner which should come out only 3.8-4.5mm - the pin in fact should slide out easily.

To answer your 2nd post, yes. Line up the cam sprockets first and place the belt over them (use bulldog clips etc to hold the belt in place). Then line up the crank and balance shaft to the marks on the timing case and feed the belt around them.
 
No what i went was ive been driving around with my tensioner extended at 9mm for the past six months....

wen i said i fit a 9mm drill bit in there i mean i meausered the hydraulic tensioner extension when the belt was all fitted up on the car (as done by a mechanic a while ago)

i havent spoke to him since......

i thought id measure the hydraulic tensioner extension to see if it came up to scratch,anyway,i could fit a 9 mm drill bit in between it and the arm,thats a fair bit out acoording to the 3.8-4.5mm of extension the manual states.
Wouldnt that cause excessive tension and or mean the belt tensioner could end up out of range of the tensioner and possibly slip.?

as shown below...3.8-4.5mm
i had 9mm
 
No what i went was ive been driving around with my tensioner extended at 9mm for the past six months....

wen i said i fit a 9mm drill bit in there i mean i meausered the hydraulic tensioner extension when the belt was all fitted up on the car (as done by a mechanic a while ago)

i havent spoke to him since......

i thought id measure the hydraulic tensioner extension to see if it came up to scratch,anyway,i could fit a 9 mm drill bit in between it and the arm,thats a fair bit out acoording to the 3.8-4.5mm of extension the manual states.
Wouldnt that cause excessive tension and or mean the belt tensioner could end up out of range of the tensioner and possibly slip.?

as shown below...3.8-4.5mm
i had 9mm
 
No what i went was ive been driving around with my tensioner extended at 9mm for the past six months....

wen i said i fit a 9mm drill bit in there i mean i meausered the hydraulic tensioner extension when the belt was all fitted up on the car (as done by a mechanic a while ago)

i havent spoke to him since......

i thought id measure the hydraulic tensioner extension to see if it came up to scratch,anyway,i could fit a 9 mm drill bit in between it and the arm,thats a fair bit out acoording to the 3.8-4.5mm of extension the manual states.
Wouldnt that cause excessive tension and or mean the belt tensioner could end up out of range of the tensioner and possibly slip.?

as shown below...3.8-4.5mm
i had 9mm
 
It means that the ecentric bearing was not tensioned up properly and that the hydraulic tensioner was over extended trying to compensate (it would not have over tensioned the belt). What could have happened if you kept driving is that the belt could have stretched and the hydraulic tensioner would reach its limit and not be able to keep any tenion in the belt which would mean the belt skipping some teeth, some valves smashing into pistons and you smashing your mechanic for f*cking your motor up.

:shock:
 
It means that the ecentric bearing was not tensioned up properly and that the hydraulic tensioner was over extended trying to compensate (it would not have over tensioned the belt). What could have happened if you kept driving is that the belt could have stretched and the hydraulic tensioner would reach its limit and not be able to keep any tenion in the belt which would mean the belt skipping some teeth, some valves smashing into pistons and you smashing your mechanic for f*cking your motor up.

:shock:
 
It means that the ecentric bearing was not tensioned up properly and that the hydraulic tensioner was over extended trying to compensate (it would not have over tensioned the belt). What could have happened if you kept driving is that the belt could have stretched and the hydraulic tensioner would reach its limit and not be able to keep any tenion in the belt which would mean the belt skipping some teeth, some valves smashing into pistons and you smashing your mechanic for f*cking your motor up.

:shock:
 
rob323 said:
It means that the ecentric bearing was not tensioned up properly and that the hydraulic tensioner was over extended trying to compensate (it would not have over tensioned the belt). What could have happened if you kept driving is that the belt could have stretched and the hydraulic tensioner would reach its limit and not be able to keep any tenion in the belt which would mean the belt skipping some teeth, some valves smashing into pistons and you smashing your mechanic for f*cking your motor up.

:shock:


so he initially didnt rotate the eccentric bearing cam enough then?
 
rob323 said:
It means that the ecentric bearing was not tensioned up properly and that the hydraulic tensioner was over extended trying to compensate (it would not have over tensioned the belt). What could have happened if you kept driving is that the belt could have stretched and the hydraulic tensioner would reach its limit and not be able to keep any tenion in the belt which would mean the belt skipping some teeth, some valves smashing into pistons and you smashing your mechanic for f*cking your motor up.

:shock:


so he initially didnt rotate the eccentric bearing cam enough then?
 
rob323 said:
It means that the ecentric bearing was not tensioned up properly and that the hydraulic tensioner was over extended trying to compensate (it would not have over tensioned the belt). What could have happened if you kept driving is that the belt could have stretched and the hydraulic tensioner would reach its limit and not be able to keep any tenion in the belt which would mean the belt skipping some teeth, some valves smashing into pistons and you smashing your mechanic for f*cking your motor up.

:shock:


so he initially didnt rotate the eccentric bearing cam enough then?
 
Firstly...thanks for all the help from everyone posting,im learning alot here,and seeing how **** some peoples work can be....

so when i tension the eccentric cam pulley,i can just insert something like a drill bit into the hole and cam it round till its firm hard up on the belt and then tighten the centre bolt then?
that what you reccomend?

and also...

Does that in essence mean that it is almost impossible to get the Belt tension wrong because the tensioner will always make up for it,the tensioner sets the tension...whilst the position of the eccentric cam pulley that it pushes onto dictates the correct tolerancing and limits of operation....pulley not cammed enough and tensioner comes all the way out....the more you cam the pulley into the belt the less the tensioner will need to extend.

on the right track?

i know you guys are doing one this sunday....

jogging the memory for you's..you reading this Craig! :p
 


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