For proper tension, I know I had to twist the timing belt no more no less than 90 degree on the long length.
But, at the end, it depends on how much force you put in doing the twist.

Indulge me: using the same two fingers and about the same force to hold a cap of a bottle or a handle of a bucket, how many liters you think you can lift? 1 liter, 5 liters? 10 liters?

just to have an idea.
Thanks.

5 litres..


I wouldn't worry about the belt tension too much. If it's quite difficult to twist the belt round 90 degrees, then that's tight enough.


Ralf S.

yeah agreed, you just have to use some common sense... It needs to be tight but not so tight its putting too much pressure on oil and water pump.

Shouldn't it turn 90 but no further? Iv never had an issue doing it like that. I must have done about 10 FIRE cam belts now...

If I put a lot of force I can go further.....It seems that if you put enough force You can always go further.
For this reason, I suggest my little experiment; I have twisted the belt with two finger using a little less force that I use to grab and lift a 5L distilled water, and it seems ok.
It is surely more tight that it was the older one.

You know how much force to put in because you learn it from experience. I never saw anyone to change a timing belt....

Now, the tension I choose seems alright because it doesn't slip .... but who knows.....