Upgrading to 9 psi?

[SBC RACING]

Anyone upgrade their powerdyne blower to 9 psi, What do i need to do this?

 

[Joes95GT]

Anyone upgrade their powerdyne blower to 9 psi, What do i need to do this?

What are the CFM ratings and maximum impeller speeds of the blower?

Assuming the blower is built to withstand 9 PSI of boost, the only thing you should need to change is the pulley on the head unit.

Joe

 

[VibrantRedGT]

On a PD to run 8-9 psi you need a 11psi pulley. Unless you have there big blower then you have other choices. I think it's a DB something.

 

[Joes95GT]

On a PD to run 8-9 psi you need a 11psi pulley. Unless you have there big blower then you have other choices. I think it's a DB something.

Is this another thing to add to the list of how "great" a Powerdyne is?

Joe, what's up with your car? Have you gotten it back on the road yet?

Joe

 

[VibrantRedGT]

Not back together but I'm getting desperate just to move it out of the garage. I may just throw something in for the time being.

 

[SBC RACING]

reply

Should i upgrade from the stock injectors when upping the boost 8-9 psi?

 

[Sleepy McNastee]

Yes you should. If I had to do it over I would get rid of my 30's and get like 42's or 50's, and get rid of my fmu. VibrantRedGT is selling his 42's...

 

[VibrantRedGT]

You shouldn't be running stock injectors on a blower period. Your asking for lean conditions and possibly motor trouble.

 

[krahkin]

Change to a smaller pulley on the head unit. Powerdyne's arent made to handle anything over the 9lb pulley. Most folks dont remind you of this, but if you have a good breathing engine, your boost guage wont or shouldnt read 9lbs. 9lb of boost on your guage is the backpressure, not the flow rate. The CFM never changes, only the backpressure (or how hard the charger is having to force air in).