350Z400rwhp

iTrader: (4)

Not really a question or a problem but just a comment. I can clearly tell a big difference in power from when it's say 60 degrees and at night vs 90 degrees and daytime. I wonder if the tires grip more when its warm and the less wheelspin is making my car feel slower. I even have meth so I could only imagine what it would be like without. Any of you Vortech or Procharger guys notice this? Guess that's one nice thing about having a wastegate and a turbo

Nexx

iTrader: (41)

2.87, new exhaust.. traction will be an issue no matter the temps with those upgrades... but yes the vortech will lose a bit of power in really warm weather but with that and the tires being sticker is making it feel slower than it really is.

eltness350

iTrader: (58)

+1 low temp t-stat ...koyo radiator....will help A LOT

JonnyC

iTrader: (19)

Yeah man, I'm kind of nervous about the heat soak. I got a custom "cold-air" intake from Jon the forums here that I want to install, and would love to go with the water injection. I also want to get a oil cooler because I'm pushing 220 F (which isn't bad, but I want it lower).

I have to really watch for knocking too, as I think i'm getting some when things get real hot. I have to send my wideband back though, so I haven't even been driving my car and tuning it.

SpoilsofWar

iTrader: (39)

Jonny, if yours is a street car make sure you get an oil cooler with a tstat built in, either in the sandwich plate or otherwise. With my oil cooler connected I was seeing oil temps between 140 on the low end (at cruise) and 160 (boosting, stop and go), which I would think is lower then optimal. With it disconnected oil temps are around 200-220. All of these temps are sampled in the sump via my AAM oil pan spacer, with the sensor close to where the turbo line drains back into the pan.

Also bear in mind that I live in a fairly cool climate, temps are usually ~60. But I think with the non thermostatically controlled oil cooler, my oil temps were staying too low.

/Thread jack.

redzzand

iTrader: (2)

im in south texas... 90+F every damn day... and right now im rockin no A/C

and heat soak affects s/c and turbo cars alike! need more cooling mods...

spoil, what brand of oil cooler has a tstat built-in?

Nexx

iTrader: (41)

im looking at vented hoods now. texas heat sux ***.

350Z400rwhp

iTrader: (4)

I can only imagine! It was 80 when I was down there in December

Highway Riding

iTrader: (6)

I actually dislike the way they look but i too would consider using vented hoods for the summer.. It's not even full blown summer in NJ and my car gets hot in 15-20 minutes of hard driving..

wannabuy350z

iTrader: (27)

vented hood is my next thing, especially in Cali. I should should see a big difference.

Hexxum001

iTrader: (3)

Heat definitely makes a big difference. When the temps get into the 50's at night, my G feels incredible. It sucks in that cool air like a fat guy at a buffet! But when it gets hot, it definitely feels a bit sluggish at times. Thank gawd for water/meth injection. I can't imagine anyone not having water/meth.

sentry65

iTrader: (11)

yeah the heat will make a difference on all cars. With the vortech, the psi will actually drop some. Turbo cars will lose power too, but the wastegate will allow more air into the engine until x psi is reached. That extra air it sucks in though to make up the loss in air pressure is just going to be sucking in yet even hotter air into the engine to reach that x psi which some consider one of the dangers with turbos

Midnight Ryderz

iTrader: (3)

i feel ya in the heat I live in PA and its a Killer so i knwo how you feel

rcdash

iTrader: (18)

Turbo theory is incorrect since psi is directly related to temperature through the ideal gas law. Since hotter air takes up more space a turbo will reach the psi target quicker. The wastegate will shut off boost build up sooner on a per mass air basis with hot air - which is why at the same psi level in the heat you make so much less power.

Turbos love cold air too!

350Z400rwhp

iTrader: (4)

I don't think that Sentry means turbos don't suffer either, he just means that superchargers have no way to compensate as turbos at least have a wastegate and there is excess air avaliable that is bled off in hot or cold weather.

sentry65

iTrader: (11)

well I don't want to get into a "does heat rise or does cold sink" physics debate...we all know a given volume of air will expand as it heats up just like how tire pressure does.

An NA and supercharged engine will still only suck in a given volume or cfm of air. How dense that air is doesn't matter to the engine in terms of cfm because the cfm is going to be a fixed ratio for NA and supercharged engines given the supercharger rpms, engine rpms, and displacement

My point was that cfm intake on a turbo engine is not fixed and will suck in more cfm in the summer even with the same max psi.

In the winter a turbo engine will suck in less cfm than in the summer, but the air is colder. The wastegate ensures that x psi is always maintained even if it's blistering hot air where a supercharger normally wouldn't attempt to suck/force that extra heat/air in. I was referring to the delta between the psi of a supercharger vs turbo psi in the summer, not talking about how fast psi builds up

but yes, turbos and all cars or anything with a combustion engine loves colder air. I thought I already said that in my previous post:
turbos included

DMK

iTrader: (6)

Are you using 100% meth or a mix?

05Z33

iTrader: (11)

Living in South Fla and it's so hot here. I will be looking into cooling mods in the near future.

350Z400rwhp

iTrader: (4)

About a 40% meth mix, anything more then about 60% will shorten the pump life.