Got a pic of a friend's SN89 - Which impeller does he have?

[pianoprodigy]

I've been meaning to get a picture of my impeller, but for now, I got a picture of my friend's impeller. It's an SN89.

www.alantripp.com/sn89.jpg

[speedytang]

That is the generation 3 impeller which was in used in the SN89-SN92. It is a heavy casting and anything over 6psi is really not worth over spinning since it does not have enough blade curve

[pianoprodigy]

That is the generation 3 impeller which was in used in the SN89-SN92. It is a heavy casting and anything over 6psi is really not worth over spinning since it does not have enough blade curve

Thanks. Assuming mine is the same, what kind of benefits would I get from purchasing an SN2000? Craig said that it would cost $1000 for a new SN2000 ($1200 less $200 credit).

The biggest thing I'm looking for is the ability to rev as high as possible so I can use a smaller pulley but still be able to rev to 8k RPMs.