Aftermarket Belt Tensioner Pulley Failure

[HAWAIIZR-1]

Originally Posted by Locobob

I have a new Gates tensioner pulley and belt installed now. I went off Craigs info on the belt size but I found the Gates 815 belt to be a little loose... like I didn't even have to fight to get it on. So I went one size smaller and found the Gates 810 to be a better fit. This is with SRP underdrive pulleys btw, if you have stock pulleys disregard the belt info.

Robert,

Good to hear progress. Sorry if wrong info was given to me years ago when I bought SRP pulleys from Randy. He is straight with info. Be sure your tensioner itself is okay. I still have the cover of the belt I was provided and it was a correct fit. Also double check the part number on the belt itself. Sorry, I'm sure you already know all this.

[Locobob]

Originally Posted by HAWAIIZR-1

Robert,

Good to hear progress. Sorry if wrong info was given to me years ago when I bought SRP pulleys from Randy. He is straight with info. Be sure your tensioner itself is okay. I still have the cover of the belt I was provided and it was a correct fit. Also double check the part number on the belt itself. Sorry, I'm sure you already know all this.

I don't think its a question of Randys list being wrong. I used a Gates belt that was not on the list based on it being an 815 like the Dayco listed. The last three digits on the belt part number are often the belts length in inches... so 815 should be 81.5 inches. In this case I found the .5in shorter Gates 810 to be a better fit.

[HAWAIIZR-1]

Originally Posted by Locobob

I don't think its a question of Randys list being wrong. I used a Gates belt that was not on the list based on it being an 815 like the Dayco listed. The last three digits on the belt part number are often the belts length in inches... so 815 should be 81.5 inches. In this case I found the .5in shorter Gates 810 to be a better fit.

I agree with you about the numbering system on drive belts and measurement. Glad to hear you got it sorted out and best wishes going forward. I’ll replace mine too before any issues. Thanks again for posting. 🤙🏼



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[2poor4aZR1]

Old thread, but want to say thank you for posting pictures of the back of the tensioner. You'd be surprised how hard it was to find a picture of what the back of the tensioner looks like.