FrontEngineDragsters.Org Forum

Technical => Spud Miller's Cave => Topic started by: wideopen231 on May 15, 2022, 06:16:53 PM

Title: altitude change to effect nitro
Post by: wideopen231 on May 15, 2022, 06:16:53 PM

Since nitro burns at lower AFR than alky how much change to effect tune on nitro engine. In this case it is high volume almost for load A/Fuel. 40 gpm or 28 to engine with 95% load. Lets say a  change of 500' DA what percentagefuel.Even if info is on smaller load with less flow info is always good to have.

Title: Re: altitude change to effect nitro
Post by: tcoupekyle on May 22, 2022, 05:31:58 PM

Ever read spuds deal called nitro notes?

Title: Re: altitude change to effect nitro
Post by: wideopen231 on May 22, 2022, 06:10:50 PM

Have printed copy I read frequently

Title: Re: altitude change to effect nitro
Post by: tcoupekyle on May 23, 2022, 03:57:11 AM

Cool! Couldn’t remember if he mentioned altitude changes and tuneup in that.

Title: Re: altitude change to effect nitro
Post by: wideopen231 on May 23, 2022, 03:43:56 PM

 A little but not answer I am looking gor. Should be something like 1oo' = x amount change either jet or mixture. Naybe some formula that uses weather, mixture and old jet at x' and y%. Maybe can find other wise was hoping Spud might check in and give some insight.