would i benefit from boring my nozzle??

[jet pirate]

i have a 96 superjet with a ported 767 motor, b pipe, msd enhancer duel 48 power bombs ,mated to a set back 12vane 140 mil mag pump running a 16/21 i have the stock compression nozzle would i expect gains from boring my nozzle 1 to 2 mil ?? any help is appreciated ! thanx

 

[Big Kahuna]

If you are running a stock pump, you would typically see more bottom end hit. But with a Mag Pump, I am not sure......... someone with a mag needs to chime in.

 

[SUPERTUNE]

For freestyle? If so, yes if your not wanting top speed, stock is 82 so I would go 2mm over to 84mm. Make sure when you machine the nozzle, you do it in a lathe and follow the exit taper. Do not bore straight!

 

[Dubs chops]

For freestyle? If so, yes if your not wanting top speed, stock is 82 so I would go 2mm over to 84mm. Make sure when you machine the nozzle, you do it in a lathe and follow the exit taper. Do not bore straight!

supertune how imprtant is this part? i have never heard that before. and i am fixing to do mine but not sure the guy machining it for me can recreate the taper

 

[stanton]

mines bored straight and it works great??

 

[wetjet701]

or just get a wetwolf cone

 

[munki63]

or just get a wetwolf cone

So if you get a WW you dont need to bore? or bore and WW?

 

[SUPERTUNE]

If you need to do both, then you have the wrong pitch impeller.
I like boring the nozzle instead of using the wetwolf cone.

 

[2XLR8]

If you are using the middle size skat trak cone then yes do the nozzle to at least 84 mm.

 

[Polish jet pilot]

U.K guys (ATP) say a cone and boring the nozzle is mandatory at the same time... just my 2 cents..