Serpentine belt on R2 with AC

[Steveeweeb]

Has anyone installed a serpentine belt system on an R2 with AC yet?

Wanted to see if it was worth the trouble or not.

[lschuc]

Check with Brad Bez.  He has done this on several cars. 

[Steveeweeb]

Thanks

 

[brad]

This is one setup I constructed. I used a Chrysler lower pulley and the waterpump pulley is grooved as it has to turn in the same direction. I think I used a Ford belt tensioner. It's been a few years...back in 2016.

[Steveeweeb]

Thanks Brad.  Was is more work than it was worth?  Regular belts really work ok anyway?

 

[brad]

It depends on the boost levels of the supercharger. anything much higher than stock 4-5 lbs will slip the belts at higher RPMs. Serpentine belts are "grippier". 

 

[Steveeweeb]

1 minute ago, brad said:

It depends on the boost levels of the supercharger. anything much higher than stock 4-5 lbs will slip the belts at higher RPMs. Serpentine belts are "grippier". 

 

Good point. Thanks

[Gunslinger]

I would think that with the stock dual belt setup...unless you have belts with perfectly matched lengths...that the shorter one would end up taking most of the load even if the difference was minor...and lead to earlier failure of that belt.  That doesn't even address the the longer belt would be more prone to slippage.  

[ronmanfredi]

15 hours ago, brad said:

This is one setup I constructed. I used a Chrysler lower pulley and the waterpump pulley is grooved as it has to turn in the same direction. I think I used a Ford belt tensioner. It's been a few years...back in 2016.

Brad, I'm adding A/C to my R2 using Rogers brackets.  The side mount refrigerant ports on the compressor look perfect in your photo.  Do you remember the compressor part #? (v groove belt)

[Steveeweeb]

Good thoughts Gunslinger. Thanks

[brad]

Rodgers bracket is for a Sanden 508. I made my own bracket, and used a 7176 series. it is serpentine. They do make them in V-belt too.