Vilhuer

Could most likely get this info from Tim or Carl directly but don't want to bother them in case someone has this on hand. What size SC pulleys are available for Murf kit? This is for local GT where owner plans to put Rotrex SC where air pump is normally. If it doesn't fit there, backup plan is to put it in aircons place and use smaller aircon where air pump is. Murf pulley would be ideal we think but would need to know what sizes are available in order to know what size SC pulley to get when ordering SC.

Tim Murphy

The standard crank pulley is 7.25" diameter.

Vilhuer

Thanks Tim. Hoping yours will work as we really like its simplicity how all auxiliaries can remain in their original places with just small spacers.

PS. This is going into '90 GT which will have 8.x:1 CR engine, not stock engine S4 which has your level II.