Harmonic Balancer Key

[William Jewell]

I have an Acura Integra GSR with engine designation B18C1. The harmonic balancer broke so I purchased an aftermarket harmonic balancer from Professional Products (PN 80052). They say this fits my V-Tech engine but there are no grooves in the inside where balancer matches with crank. There was no key provided so I bought the key designated by Acura (Honda P.N. 90704634000). This key is 4.5 X11.0mm and seems awfully small. Should I be using a larger key? I don't want to eat another balance and possibly a crank.
Thanks

 

[Muckman]

No key is provided because you are expected to reuse the original key. It sounds like you bought a replacement key so use that. Its the only size that will fit.

 

[William Jewell]

Thanks - Original key was destroyed when balancer spun. Thai may have happened as a result when I had timing belt replaced but it ook a few months to fail.

 

[Muckman]

Hopefully the slot in the crank snout isn't damaged.
Report back when you have it installed.
Im curious of the quality of this damper.