serpentine belt quick question

[zakIXdin]

hi evo lovers,

straight to the point which of these do you use for a E9 gsr?

6pk 1790 (currently in my car but squeals when cold with A/c on)
6pk 1785
6pk 1795

all the help appreciated

thanks!

 

[And@fcm]

if you look underneath where the tensioner is, on the bottom of the tensioner you'll see some markers showing the travel left on the arm, looking at them if the arm is in the middle then you've got the right size belt, if its sat on one side you'll have to work out if a longer or shorter belt will bring it back t the centre.

Also how long has the current belt been on there? what make is the belt

 

[zakIXdin]

hi And,

its been on for quite a while... maybe around 6months at least. but what i remember was that when it was installed... all the squeaking noise stopped. and then after two weeks it started to make the same noise again. ill try to observe the bottom of the tensioner as you suggested.

the make is mitsuboshi.