I've been running a 50 wet shot and want to go up to a 75. My plugs look good every time i check them and oil looks good too. my fuel is all stock and I have ngk plugs and 10.2 mm wires i got off ebay. should i stay with the 50 or would it be safe to put in new nozzles to upgrade to 75? if not 75, what about 65?

 

You should be fine. Just remember that larger shots mean more wear.

 

I would upgrade the pump. I would also change the plugs every other oil change.



I didn't have enough fuel for an NX 75 shot on stock pump.

 

Aren't you running turbo?



I ran 75 a few times. I didny have a problem.

 

I was just doing some research on this... I found this calculation



max hp =fuel pump flow rate (gph) * 12

max hp =fuel pump flow rate (lpm) * .76



These are supposed to be for stoichiometric fuel ratios... dunno... I could not find our stock fuel pump GPH or LPM online. Anyone know this off hand?



This calculation comes to 184lpm for 140(stock) hp, or 276lpm for 210 hp... These numbers seem very very high for a rating... Anyone got any other calculations?

 

I ran nitrous 8 years ago just before upgrading to turbo.