Drag Racing Discussions > Front Engine Dragsters

I know Why NITRO is $35 a Gallon

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wideopen231:
Dave where are you getting nitro? I bought this I have last years at national event from a A/Fuel guy. There was guy on DRR in Florida who had stated he could get it 20 bucks a gallong ,just not NHRA blessed.  Would like to find a source close by to get some from time to time.

dusterdave173:
We get 5 gal cans of VP it is $150   Yes in drums it is WAY cheaper but I could not use a drum in many seasons--I have used some years old nitro and when stored in sealed jugs it does stay good from what I have seen
It is the best stuff I have ever bought
My ultimate goal is run 50% safe and that will be plenty fast enough for me

retroboy:
So you just tip and go. Hmm what about all the biz about needing different barrel valve spool and stuff  'coz it burns at a different A-F ratio? Good to hear it works as is. Hmmm..

rooman:
At small percentages you can get away with the spool as is but it will get marginal if you get too enthusiastic with the pop. On Dave's deal, if pill change from a #75 to a #70 was enough to make it run good I would think that it was probably a little on the fat side on alky even if he was not seeing any appreciable oil dilution. On Vaught's blown alky small block we will make that big a change just to compensate for atmospheric variations.
  Also, with larger percentages and high compression you need to be careful with making sure that there is no fuel puddled in the chambers--make sure to kill the motor with the fuel shut off and if in doubt pull the plugs and spin the motor over. On a hemi any excess fuel will simple run out the exhaust port as the valve is pretty much the low point int he chamber but with wedge style heads there is plenty of opportunity for excess fuel to collect at the bottom of the chamber and the results can be disastrous.

Roo

dusterdave173:
Yes we have been very careful--Thanks Roo   good to know
I have not changed to pill yet was going to do that when I go to the higher % mix on next outing
It ran perfect on our standard st up 75 pill 38 degrees timing  picked up 3 tenths in the 1/8th
I just have a 355 CI
I think anything above 30% and then the BV , nozzles, maybe even pump size will come into play
AF ratio is pounds of air to pounds of fuel right? So at lower percentage the nitro actually being heavier it works out it does not need to be richer until you get percentage above maybe 20 ??  I am not taking a chance though tune up signs say it is great I will start with a 70 next time out and tune from there
We have been warming up on alky--draining at the tank bottom--then filling with Nitro that way we have alky in main line for fire up
again....I am fast approaching the limit I can expect to run with my set up where I have to start changing lots of stuff so my plan is go with what I have --watch the plugs and pipes and try hard not to hurt anything

I guess my message is read Spuds Nitro Notes about a dozen times and if you are not lean then slap in 20% and go--
worked for us so far

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