moroso vacuum pump drive

just wondering if the mandrel that goes into the mounting hub is supposed to be a real tight fit? mine is so tight i will have to beat it in with a hammer which is not what i want to do if i dont have to. any one else run into this?

Not sure what balancer you have. I have an ati and I am looking at using this.

http://www.jegs.com/i/Aerospace-Components/026/AC-MS-BBCHR/10002/-1

i am running a tci rattler with moroso crank trigger. the hub mounts flat against the crank trigger wheel but the front is recessed for the mandrel to go into but like i said it is very tight. any one else?

no not that tight u should not need to beat with a hammer i also have a ati