Boost guesses on my whipple setup
Apr 16, 2018 | 02:22 PM
#12
Joined: Jan 2006
Posts: 16,282
Likes: 438
From: Huntsville, AL
Here ya go, have at it. Keep in I basically made up the VE and intercooler efficiencies so that has some bearing on it. The supercharger power required is just based on the aerodynamic load, the real number will be higher due parasitic losses but I dont have a good way to calculate that, so just add like 20% if you want a number.
Also keep in mind I have like 4 different boost gauges for various reasons, and they all read different. So just because the spreadsheet doesnt match your gauge doesnt mean either is wrong. This is just meant to get you in the ballpark.
Also keep in mind I have like 4 different boost gauges for various reasons, and they all read different. So just because the spreadsheet doesnt match your gauge doesnt mean either is wrong. This is just meant to get you in the ballpark.
Last edited by Atomic; Apr 16, 2018 at 02:29 PM.
Apr 16, 2018 | 06:11 PM
#13
TECH Junkie
Joined: Jan 2007
Posts: 3,309
Likes: 265
From: Arlington, TX
Here ya go, have at it. Keep in I basically made up the VE and intercooler efficiencies so that has some bearing on it. The supercharger power required is just based on the aerodynamic load, the real number will be higher due parasitic losses but I dont have a good way to calculate that, so just add like 20% if you want a number.
Also keep in mind I have like 4 different boost gauges for various reasons, and they all read different. So just because the spreadsheet doesnt match your gauge doesnt mean either is wrong. This is just meant to get you in the ballpark.
Also keep in mind I have like 4 different boost gauges for various reasons, and they all read different. So just because the spreadsheet doesnt match your gauge doesnt mean either is wrong. This is just meant to get you in the ballpark.
Apr 17, 2018 | 06:38 AM
#14
Here ya go, have at it. Keep in I basically made up the VE and intercooler efficiencies so that has some bearing on it. The supercharger power required is just based on the aerodynamic load, the real number will be higher due parasitic losses but I dont have a good way to calculate that, so just add like 20% if you want a number.
Also keep in mind I have like 4 different boost gauges for various reasons, and they all read different. So just because the spreadsheet doesnt match your gauge doesnt mean either is wrong. This is just meant to get you in the ballpark.
Also keep in mind I have like 4 different boost gauges for various reasons, and they all read different. So just because the spreadsheet doesnt match your gauge doesnt mean either is wrong. This is just meant to get you in the ballpark.
Apr 17, 2018 | 11:02 AM
#15
Thread Starter
On The Tree
Joined: Jul 2016
Posts: 114
Likes: 0
Thanks Richard, I’d be happy around 11-12 psi if that’s what it runs when it’s all put together. Ultimately I’d like to run 12 psi so if I have to down pulley from the 3” when it’s all going so be it.
thanks for the info
thanks for the info
Sep 27, 2019 | 03:03 PM
#16
On The Tree
Joined: Nov 2005
Posts: 104
Likes: 1
From: DC area
As a complete novice, trying to use the spreadsheet but unable to determine crank diameter. This is for a 5.3 (LC9) engine, but trying to determine what the spreadsheet is actually calculating, not just searching for a number to plug in.
TIA!
Allen
TIA!
Allen
Sep 28, 2019 | 07:51 AM
#18
On The Tree
Joined: Nov 2005
Posts: 104
Likes: 1
From: DC area
Allen
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