You asked fo it - here it is NHRA Factory Stock Showdown to

Ed Wright · 06-19-2012, 01:26 PM

Originally posted by D. Johns:
[QUOTE] First I'll start off by saying this is fantastic! Heads up 1/4 mile! I loved it when the ADRL with its supercar showdown gave a stage for the new factory Drag cars to flex their muscle in competition for king of the strip. Its just I'm more of a "drag racing is 1320" person.

2nd I would like to see this happen at more events. Although Indy is my home track I'd still like to see it branch out and even go divisional.

3rd I think some of you don't realize weather/elevation really affects the blower cars also. It's not like a turbo car that will simply spin the turbine faster or slower until it reaches the desired boost level dictated by the waste gate. Now if we could change pulleys based on weather/altitude change........... The positive displacement blower draws in a fixed amount of air per engine revoulution and is very sensitive to inlet restriction and air quality. It can only compress the air that it draws in. Less air in means less air that can be compressed. A supercharged car can lose easily 40+HP(low ball figure) because of IATs telling the computer to yank timing over a certain temp at any point of a run. We have our own issues on this side of the fence also. It's not all just sunshine and lollipops. [QUOTE]

That IAT pulling timing is only as much as your tuner wants it to be. It's a table that could be zeroed out if desired. From the factory they are always more aggressive pulling more timing than needed for race fuel.
Blown cars are effected by weather, but less than NA engines.

06-19-2012, 01:26 PM	#15
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: You asked fo it - here it is NHRA Factory Stock Showdown Originally posted by D. Johns: [QUOTE] First I'll start off by saying this is fantastic! Heads up 1/4 mile! I loved it when the ADRL with its supercar showdown gave a stage for the new factory Drag cars to flex their muscle in competition for king of the strip. Its just I'm more of a "drag racing is 1320" person. 2nd I would like to see this happen at more events. Although Indy is my home track I'd still like to see it branch out and even go divisional. 3rd I think some of you don't realize weather/elevation really affects the blower cars also. It's not like a turbo car that will simply spin the turbine faster or slower until it reaches the desired boost level dictated by the waste gate. Now if we could change pulleys based on weather/altitude change........... The positive displacement blower draws in a fixed amount of air per engine revoulution and is very sensitive to inlet restriction and air quality. It can only compress the air that it draws in. Less air in means less air that can be compressed. A supercharged car can lose easily 40+HP(low ball figure) because of IATs telling the computer to yank timing over a certain temp at any point of a run. We have our own issues on this side of the fence also. It's not all just sunshine and lollipops. [QUOTE] That IAT pulling timing is only as much as your tuner wants it to be. It's a table that could be zeroed out if desired. From the factory they are always more aggressive pulling more timing than needed for race fuel. Blown cars are effected by weather, but less than NA engines. __________________ Ed Wright 4156 SS/JA Last edited by Ed Wright; 06-19-2012 at 02:16 PM.