Mini Torque - View Single Post - What are the differences between a 15, 16, 17 & 19% pulley..?

luca · 24-07-08, 10:24

The first difference is the sizes. Each pulley is a reduced size compared to stock ie 15%reduced size, 17% reduced etc.
When the pulley gets smaller the power is shifted lower down the rev range. Also the smaller the pulley, the higher the boost. But with running a high boost with the e45 supercharger it can make it run too hot and make it inefficient and ultimately lose power if it gets too hot.
I ran a 15% on mine as i wanted to be on the safe side and when i had it fitted it was in the middle of summer so was quite warm.
Most people on here run the 17% which seems to be the best for good midrange power.

24-07-08, 10:24	#2 (permalink)
luca Frequent User Join Date: Jun 2008 Posts: 534 Thanks: 43 Thanked 27 Times in 25 Posts	The first difference is the sizes. Each pulley is a reduced size compared to stock ie 15%reduced size, 17% reduced etc. When the pulley gets smaller the power is shifted lower down the rev range. Also the smaller the pulley, the higher the boost. But with running a high boost with the e45 supercharger it can make it run too hot and make it inefficient and ultimately lose power if it gets too hot. I ran a 15% on mine as i wanted to be on the safe side and when i had it fitted it was in the middle of summer so was quite warm. Most people on here run the 17% which seems to be the best for good midrange power.