Thread: Gpr Ported
06-07-2007, 06:35 AM #1
- Join Date
- Jul 2006
When you do porting and advance timing and STAGE II From riva and VF3
what kind of prop should i use
DF 14/20 or Re pitch DF 15/23
Kind of lost here
we need to get 80+ the soonest.......
06-07-2007, 07:00 AM #2
Well thats kind of a loaded question.
Start with asking your portsmith the target rpms. With a good aftermarket tach collect the rpms with the 14-20 and start adjusting form there one degree at a time.
Remember you can always add a degree to the trailing edge of a dynafly but you can't go backwards. The outer diameter grows as the degree increases and the blades must be cut to fit the liner. I would use the 85 mm nozzle and if you go a little to far the 87mm can possibly bring it back.
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