Slightly overtightening new belts due to stretch

[mclasser]

I'm going to DIY the alt & PS belts in my Infiniti. 1/4'' deflection is good for used belts since it keeps away chirps year round. The PS belt is a bit of a pain to change so I'd like tension everything once and avoid going back in for readjustments. That's why I'm thinking of going with 1/8'' on these new belts to account for the inevitable stretching in the first few hundred miles. Is this too tight?

 

[crazyoildude]

The more tension the more wear on your Alt, P.S.pump, a/c compressor etc..

 

[ragtoplvr]

NO!

Specified tension for new belt only. No extra. If that is not listed, then specified tension only.

Rod

 

[DoubleWasp]

You will never believe how fast your accessories will jump ship under that practice.

Adjust your belts later, or adjust them later when you are finished with your accessory replacements.

 

[Kuato]

Originally Posted By: crazyoildude
The more tension the more wear on your Alt, P.S.pump, a/c compressor etc..


Yep! It'll be a LOT easier to tighten the belt in 20000 miles than to replace accessories....then retighten the belt....

 

[Kestas]

You'll overload the bearings and can expect early failure.

 

[Trav]

It like buying clothes too tight because you are on a diet. Bad idea.

 

[mclasser]

Thanks everyone. I will tension normally and recheck later.

 

[circuitsmith]

The specified tension takes into account initial stretching.

 

[mclasser]

Originally Posted By: circuitsmith
The specified tension takes into account initial stretching.

Not always. The deflection listed in my service manual varies for a new versus old belt.