DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    Racing Fuel Questions
Go
New
Find
Notify
Tools
Reply
  
Racing Fuel Questions
 Login/Join
 
DRR Pro
Picture of CURTIS REED
posted
So I have only ever run Methanol and am going to try running gas when it's cool, early Spring and late Fall.

I get the octane numbers like most do. Looking at the Stoichiometric A/F Ratio is there something to consider? VP 110 is 15.09 and C12 is 14.79, what will that tell me tuning wise?

The RVP numbers are 4.8 and 7.92 which I have determined the higher number will give more vapor when starting or running. Is it preferable to run a fuel with a higher RVP because we tend to run our engines cooler?

This is a SBC carbed around 580hp at 12.9-1 compression.



____________________________
2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion

2018 Div4 Goodguys Hammer award winner
 
Posts: 2916 | Location: KIEFER, OK. | Registered: August 17, 2007Reply With QuoteReport This Post
DRR Top Comp
posted Hide Post
When it's really cold out you might see a tiny bit easier starting with the higher vapor pressure but I doubt it. I ran Av-gas for years and the VP is low on it.

One thing you have to remember is that "most" race engines are well tuned and should have no problem starting, even in colder weather. As far as E.T. goes you won't notice squat difference.

Good luck!


Clowns to the left of me, Jokers to the right. Here I am.......
 
Posts: 5298 | Location: stuck in the middle with you! | Registered: March 11, 2002Reply With QuoteReport This Post
  Powered by Social Strata  
 

DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    Racing Fuel Questions

© DragRaceResults.com 2024