Trick Flow small block heads
The fact that you said you saw something on the dyno that was in the 30” range doesn’t sound promising to me.
None of the common SAE correction factors use “corrected” baro readings.
I can’t think of any reason why you’d have any use for that info on the dyno.
Here’s my guess....... he’s using the corrected baro readings, which is why he said the uncorrected numbers went from 510 to 540 corrected.
That would be about the correct amount of correction(4%)for an uncorrected baro of around 30”, 91*, and a little humidity.
The issue is....... the uncorrected baro isn’t 30”........ it’s 24.xx....... so those 540hp numbers are erroneous.
Here’s the baro pressure for Fort Collins over the last few days.
Uncorrected, in Mb. To convert to in/hg divide by 33.864.
Yesterday, from mid-day into evening....... 846mb down to 844mb....... or .....24.98 to 24.92 in/hg.
Looks like the highest pressure in the last few days was 6/29 around 11pm....... 851.8mb....... 25.15”hg.
The fact that you said you saw something on the dyno that was in the 30” range doesn’t sound promising to me.
None of the common SAE correction factors use “corrected” baro readings.
I can’t think of any reason why you’d have any use for that info on the dyno.
Here’s my guess....... he’s using the corrected baro readings, which is why he said the uncorrected numbers went from 510 to 540 corrected.
That would be about the correct amount of correction(4%)for an uncorrected baro of around 30”, 91*, and a little humidity.
The issue is....... the uncorrected baro isn’t 30”........ it’s 24.xx....... so those 540hp numbers are erroneous.
Here’s the baro pressure for Fort Collins over the last few days.
Uncorrected, in Mb. To convert to in/hg divide by 33.864.
Yesterday, from mid-day into evening....... 846mb down to 844mb....... or .....24.98 to 24.92 in/hg.
Looks like the highest pressure in the last few days was 6/29 around 11pm....... 851.8mb....... 25.15”hg.
