Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

One YouTube video does not make you an expert. I’m a mechanical engineer and I’ve been building and running these my whole life, but if my creds don’t work for you, check out Gale Banks or Dave’s Diesel, a couple of shops that don’t sell delete kits but will explain the obvious thermo, physics, and design issues with what I’m telling you is a problem, then explain why.

EGR only open for a bit when the combustion temp is high. Good god. What are you even talking about. You couldn’t be more wrong if you tried to be.

Pumping loss doesn’t matter to a turbo. Are you familiar with a wastegate?

EGR LOWERS COMBUSTION TEMP. Engine efficiency is directly correlated with the temp gradient between the combustion temp and the outside air. By the way each cycle is its own thing. Conductive or radiant heat from the last cycle is so insignificant you ignore it in the calculations. The barrier layer insulates the charge from the cyl wall and piston temps or you’d melt everything in the engine first time it fired.

You should take some college level thermo courses before you start popping off like an armchair expert. At least figure out what you don’t know before you just add another data point to the corpus trying to make sure dunning Kruger effect is actually backed up by examples.



> I’m a mechanical engineer and I’ve been building and running these my whole life, but if my creds don’t work for you

> Pumping loss doesn’t matter to a turbo.

Sorry, but your creds don't even work for you mate, so I don't see why I should care about them.

Take a few deep breaths and have a good day - no sarcasm.




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: