ZR-1 Net Registry Forums - View Single Post - QUestion about ALternator pulley size and belt size

5ABI VT · 11-17-2014

Im not sure if Im correct but the oem pulley seems to be a 2.75. Im considering an aftermarket alternator but they only have 2.5 and 2.9 inch pulleys. I would want the tensioner to have enough tension either way.

Can anyone tell me the oem belt length? If there are options for slightly bigger or smaller I can search it up and feel comfortable with either. I would guess the oem tensioner would still work on a 2.5 but I don't want it to not have full tension in case there is too much belt length etc.

11-17-2014	#1
5ABI VT Join Date: Jun 2013 Location: Toronto Posts: 780	QUestion about ALternator pulley size and belt size Im not sure if Im correct but the oem pulley seems to be a 2.75. Im considering an aftermarket alternator but they only have 2.5 and 2.9 inch pulleys. I would want the tensioner to have enough tension either way. Can anyone tell me the oem belt length? If there are options for slightly bigger or smaller I can search it up and feel comfortable with either. I would guess the oem tensioner would still work on a 2.5 but I don't want it to not have full tension in case there is too much belt length etc.