Pulley spacing?

[Rowdy]

Hi guys, I?m in the process of installing a new engine and the mounting bolts don?t line up. I?m going to have to drill new holes and I can?t find the measurements for how far to space the center of my crank shaft from the center of the T-20 driven shaft. Am I missing a tech section somewhere where there are oem measurements and data that I can find or does anyone have the correct spacing measurements?
Should I line up the dive pulley with a certain spot on the driven pulley or just ?get the belt straight??

[john swenson]

i'm not exactly sure ..but if you have the belt , set the motor in place with the belt on both pulleys so it's straight then pull the motor forward till belt is tight . somehow clamp the motor so it won't move . when you push the top of the belt down there should be about a inch or so deflection . it's best if your new mount holes can be slotted so you have a bit of adjustement forward or back on the motor so as to get the belt just right . hope this helps , someone may chime in and let you know if this is the way or other suggestions . johnboy va

[Rowdy]

Thank you sir! My belt was way too loose to start then. It was floppy in there before.

[Nortonscustoms]

Rowdy, look on this chart. Match up your belt and pulleys and see what the suggested center distance should be.

https://www.bmikarts.com/Comet-Belt-Chart-1-316-Width-Belts

[Rowdy]

Fantastic, thank you sir!!!