Thread size of harmonic balancer bolt?

[yellow1995Cobra]

Hey guys just looking for that thread size.. I cant seem to find it anywhere, even tried emailing ARP with no response..

Thanks guys

 

[True 5.0]

It's a standard fine-threaded bolt. Either 5/8-18 NF (15/16 wrench) or 3/4-16 NF (1-1/8 wrench). I can't remember which one it is, however. I know it's the same size as the center bolt of my Lisle power steering pulley puller and balancer puller.

Tip:

Use the longer center bolt from the balancer puller with a stack of washers and the thrust bearing from the PS pulley kit to press on stubborn balancers like a Romac

 

[mo_dingo]

IIRC it's a 15/16 head so the 5/8 NF thread sounds right.
Scott

 

[yellow1995Cobra]

awesome thanks guys!