Coldside piping and velocities
You're more than welcome to check the math for yourself (please do).
Calculate the difference in cubic inches of the 2 different diameter piping setups, convert it to cubic feet, and use a standard number like 600 cubic feet/minute to calculate the amount of time it would take for the engine to consume that difference.
Friction and pumping losses don't need to be calculated. Its obvious that smaller piping has more of them. Their relevance would need to be calculated.
The difference in friction between the 2 would be a ratio that correlates with surface area and cross-sectional area.
Friction wouldn't have much effect on spool. Max power yes, but not spool.
Pumping losses, or their effect, could be measured with a map sensor in the piping that maps out curves in relation to both time and rpm to compare the two.
The velocity of air in the intercooler is a tricky one to deal with, The inlet/outlet size would determine entry velocity, but the core itself will likely slow down the air as it would have a much larger flow area.
Calculate the difference in cubic inches of the 2 different diameter piping setups, convert it to cubic feet, and use a standard number like 600 cubic feet/minute to calculate the amount of time it would take for the engine to consume that difference.
Friction and pumping losses don't need to be calculated. Its obvious that smaller piping has more of them. Their relevance would need to be calculated.
The difference in friction between the 2 would be a ratio that correlates with surface area and cross-sectional area.
Friction wouldn't have much effect on spool. Max power yes, but not spool.
Pumping losses, or their effect, could be measured with a map sensor in the piping that maps out curves in relation to both time and rpm to compare the two.
The velocity of air in the intercooler is a tricky one to deal with, The inlet/outlet size would determine entry velocity, but the core itself will likely slow down the air as it would have a much larger flow area.
Same size tubing. Air doesn’t like to turn sharp corners (tight radius as found on the silicone elbow). Air can actually turn around and flow backwards or turn extremely turbulent depending on the speed. I wouldn’t say it flowed any MORE air, just allowed all the air in the intake to make boost
My S476 has a 3” outlet. Intercooler 3” in and out. So I used 3” tubing.
I used the BS Silicone 90 at the stock TB.
Has no trouble making 24 psi. I haven’t run it any higher. Spools fine.
I used the BS Silicone 90 at the stock TB.
Has no trouble making 24 psi. I haven’t run it any higher. Spools fine.
