DJ23

I got this question from reading on 6speed line. How does colder air temps create better performance and better sound out of a Turbo?
If anyone has a thread or answer, I would love an explanation.

Thanks, Jay

Terry Adams

Cold air is denser than hot air. Contains more oxygen per cubic inch. Delivers more combustive power with each explosion in the cylinder. I could go on, but I might confuse myself.

Tacet-Conundrum

Yup you can pack more combustive O2 into the same area when it is colder. When air temperature is hotter O2 gets bigger due to thermal expansion. All that fuels needs oxygen, or an oxidizer, to explode. Thus the more of it you can pack into the same space the better. That is also why inter-coolers are so important in providing more Power to your engine. They help cool everything, well mostly the air/O2, down before hitting the combustion chambers... I.e. The cyclinders.

DJ23

Thanks for the lesson guys. Nice to know that I can look forward to driving in the fall and winter, unless there's a blizzard.

Jay

Terry Adams

This is what they are for

Tacet-Conundrum

Driving around Tahoe again?

Terry Adams

Good guess for a local, but a bit farther.

https://rennlist.com/forums/993-foru...pics-many.html

RSA333

Oxygen concentration is greatest at 4 degrees Centigrade. That's when a turbocharger is most efficient.

Bob in NY

watch the vapor trail come out of your exhaust when the turbo's kick in, pretty amazing......

JSF721

Think of it as natures Intercooler. Cooler are is denser and pushing denser air through the tubro "turbine" makes it spool up faster and creates more boost faster.

yemenmocha

1. N/A vs. Turbo: which suffers more from hot air temps?
2. N/A vs. Turbo: which is affected more (and how) from various altitude differences?

Steamboat

NA loses about 3% power (hp) per 1,000 ft of altitude gain which is why turbos are so popular in the mtns. A turbo's loss is negligible. I don't know if the torque curve is similarly affected.

I would think that NA would "suffer more" in a relative sense from hot temps if for no other reason than the turbo's forced induction at least offsets some of the effects of temperature increase even if it is not operating optimally. Best,

Terry Adams

My subjective experience at 10K feet in the mountains is that turbo lag is a bit worse and torque seems less.