04-01-2008, 04:47 PM #1
wat speed should i be hitting????
i think for all work i have i should be hitting higher speeds. wat could be the problem?
ported 1300 with valves
riva heads 175 comp. running wth av gas
riva pump shoes
3 degree timing key
jetworks double mod
r&d 800 intake grate
r&d rideplate mod 4
v force 3 reeds with spacer
max speed 74.9 wtf
04-01-2008, 04:50 PM #2
Welcome to the hulk.
What is your RPM.
04-01-2008, 05:04 PM #3
the rpms was at 71?? with the 87 mm nozel and a 14/20 set back
with the new pump and new prop i have no idea??
04-01-2008, 05:10 PM #4
you NEED a tach,,,, the stock tach wont do you any good
04-01-2008, 05:12 PM #5
Are you using a good Tach?? not the stock one. What AV gas are you using as the octane rating is different.
04-01-2008, 05:15 PM #6
no i dont go by the stock crap i borrowed a tiny tach wat are the rpms suppoesed to be at?
i use 100 av gas
04-01-2008, 05:17 PM #7
04-01-2008, 05:17 PM #8
04-01-2008, 05:19 PM #9
04-01-2008, 05:25 PM #10
You are going to have to run better fuel with 175 compression.
100LL (Blue) avgas
Contrary to popular belief this isn't 100-octane fuel. Aviation fuels are rated on an ASTM Lean/Rich performance number system. 100LL is rated at 91/96 By comparison; Unocal Leaded race gas that is used in lots of spec fuel racing classes has performance number of 112/160. 100LL is closer to 91 octane (MON); by comparison VP C12 is rated at 108 (MON).
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