Welcome • User Guide
ToS • Privacy • Canary
Donate • Bugs • License

©2025 Poal.co

271

Like wtf bro, if you have a piston that's doing 12:1 compression ratio, that's a calculation based on volume. If you compress the air with a compressor, that pressure ratio is factored into the cylinder with the piston at BDC. Where is the calculation for the effective compression ratio where boost is added to the compression ratio at TDC? It doesn't exist, it's a conspiracy man. I mean what is the functional relationship? Is it additive? 14 psi of boost = 2:1 compression ratio, and an engine with a 10:1 geometric compression ratio now has an effective 12:1 geometric compression ratio? That can't be right, because then it would just be easier to use an 12:1 piston and save all the turbo plumbing. Is it multiplicative? 10x2=20? So a 10:1 CR piston with a 2:1 compression ratio from a compressor would effectively have 20:1 compression ratio? Or is it some other non-linear function that can only be gleamed through experimentation?

Like wtf bro, if you have a piston that's doing 12:1 compression ratio, that's a calculation based on volume. If you compress the air with a compressor, that pressure ratio is factored into the cylinder with the piston at BDC. Where is the calculation for the effective compression ratio where boost is added to the compression ratio at TDC? It doesn't exist, it's a conspiracy man. I mean what is the functional relationship? Is it additive? 14 psi of boost = 2:1 compression ratio, and an engine with a 10:1 geometric compression ratio now has an effective 12:1 geometric compression ratio? That can't be right, because then it would just be easier to use an 12:1 piston and save all the turbo plumbing. Is it multiplicative? 10x2=20? So a 10:1 CR piston with a 2:1 compression ratio from a compressor would effectively have 20:1 compression ratio? Or is it some other non-linear function that can only be gleamed through experimentation?

(post is archived)

You are currently inside a comment thread.
Click here to see all the comments (41).
[–] • 0 pt

Wrong again my friend 8 for an ASE Master + an L1

[–] • 0 pt

L1 is gas station maintenance.

[–] • 0 pt

I am please to see you've given up on the VE argument and progressed to trolling

boomersearch.jpg https://www.bing.com/search?q=ase+l1+test

[–] • 0 pt

What's more to say about VE, boost can affect it, but only because pressure ratios affect flow velocity.

Again, L1 is basically gas station maintenance. Spark plugs, setting gaps, changing O2 sensors, reading lambda values for lazy operation, pedal position sensors, compression tests, leakdown tests. All of this is covered in the engine cert, plus the mechanical aspect of engines.

[–] • 0 pt

You know what I hate about ASE tests? It's all ancient tech, modern cars have little to do with anything in the certs.