NAN777

all,

i don't know if anyone else had answered this question before.
i'm in a country where 365 days is summer.

i have apexi twin air intakes, basically the rest is all stock.

today i doubled checked.... my air intake on datalogit showing up to 92 ........... i'm not sure if it's 92 degrees or 92 Farenheit.

but either one... it's extremely hot.

i need to know what you all did to resolve this one ....

i have a few things in my mind and i just did....

1) put back the air box air divert. previously i took it out and blocked the hole. i'm not sure how much does it help my engine to breath fresher air.

2) relocate my air temp sensor into the intake elbow. hopefully it reduces by 10 or 20 in term of readings and also reducing chances of heat soak.

3) take my intercooler out and have a thorough wash to wash out all the oil and dust the potentially reducing the efficiency of my intercooler (stock one)

i need more ideas how to resolve the problem

i know there are a few more including replacing the intercooler with a larger one, front mount intercooler or even V mount intercooler. before i go into that direction, i might want to know what alternative.

thanks in advanced. in the mean time i'll try to search for more. help appreciated.

NissanConvert

iTrader: (1)

I don't think this is terribly high. I usually get some decently high numbers on start up after my car has been running then sitting & heat soaking.

Especially considering ambient temperature in Malaysia.

Mahjik

iTrader: (1)

The most effective way to get better intake temps is to get a better intercooler. You don't necessarily need to go as extreme as a v-mount IC.

DaleClark

iTrader: (55)

95 is pretty damn high. The reading is in degrees celcius too - that's damn near boiling!

I also wonder if something's amiss with your air temp sensor. Might be worth replacing with a new one. In hot Pensacola summers (high '90s fahrenheit, very humid, running AC) I've seen heat soak into the '60s and MAYBE low '70s. I've NEVER seen the '90s.

Dale

airborne

Celsius vs Fahrenheit is a monster difference. 92F is awesome with the stock sensor in the stock location. Especially if its already 80F out. Since you have the hot air intake its more likely that its 92C...which is 197F. Which means the sensor thinks your air is about as hot as your coolant.

i saw 75ish on my pfc and that worried me. didn't hurt anything though.

edit:
if you still have the stock intake you should try putting that back in with the cheap mod.

NAN777

tomorrow i'll consider getting the sensor relocated to the IC elbow pipe.
then i might consider asking my mechanics to relocate the intakes into the air duct for the right oil cooler to breath more fresh air. move the overflow tank out replace with a smaller and square tank from other cars... that should allow my intakes to breath alot more fresh air...

my sensor is not screwed. me and my fren did a check pour water on it.... and it can drop to ambient temp around 38 degrees, plus minus 10 because the engine still a little warm after some water....

sad news is that i don't have the stock air box.... i'll try to source around get hold one of it and at least i can use to block the hot air from going into my intakes....

yes 95 is very high.. my fren was shocked when he sees one... he though it was the water temp.. when look closely.. it's air intake temp....

at 80 my PFC already retard 6 on timing... so... i guess once i got this fix my car will run ALOT stronger

NAN777

plus i'll take the intercooler out to service and clean just incase dust or debries + a little oil is reducing the efficiency of the intercooler. i just put back the top ducting of the air box with a metal plate blocking partially the radiator, hopefully the radiator fan is not strong enough to blow the air backwards into the intercooler where my purpose is to let the IC duct to divert air to my intakes nearby to cool the air down.

Mahjik

iTrader: (1)

Once again, the effective way to get cooler intake temps to get an aftermarket IC. Reducing your intake temps by say 5-10 degrees doesn't necessarily equal 5-10 degree reduction at the manifold unless your car is NA.

NAN777

okay.. thanks for it...
i'll try to relocate the intake to suck in cooler air before i head for larger aftermarket IC.
sooner or later it'll has to be the IC... but didn't realise it is required before my datalogit... will get help from frens to get the tunings and readings done.

Mahjik

iTrader: (1)

With a fairly stock car, 80 C on the stock IC is fairly normal. People who have put fairly stock cars on a road course have seen intake temps climb to 100 C (and this is with the stock intake as well as the stock IC).

While its always good to have cooler air coming into your intake, it will only make a nominal difference since the air will be heated by the twin infernos and then cooled again by the small stock IC. Get a better IC and your intake temps will go down substantially. People are seeing in the 60's with the PFS SMIC while running the car very hard.

NAN777

all i can say is... WOW....
that really opened my eye.
time to shop for a new intercooler...
if it's a SMIC, it has to be with ductings
if it's FMIC... it's gonna take some time to and money to build it.

rynberg

If you are stuck in very slow moving traffic on a hot day, you can get intake temps that high, no matter what intercooler/intake setup you have...although the hot air intake you have does not help.

If you are talking about intake temps from actually driving around, then something is wrong.

airborne

It amazes me what a monster temp difference it makes just moving 5-10 mph compared to a standstill.

Mahjik

iTrader: (1)

Things to keep in mind, you are using ambient air to cool your intake air. If your ambient air is in the 90's (like it is in Malaysia), then you are already starting with high temps. Add in the fact that the stock IC is a little small, you instantly have high intake temps.

gracer7-rx7

iTrader: (16)

What are your coolant temps like?

KevinK2

Malaysia, is always hot during the F1 race. What is the annual range in day temps?

Stock IC is about like having no IC.

If you DO NOT track your car, and do use AC, best way to keep manifold air cool is a FMIC ... properly ducted, a fan override switch, and to a lesser degree a cold air intake. Fluidydne rad (properly ducted) to complete package.

Option 2 would be an A/L IC. Popular in UK.

Most stock mt IC's will heat soak like crazy when stuck in traffic, ac on causing hot air reversal through IC, sun baking hiway to 130F ....

Kento

lol

NissanConvert

iTrader: (1)

I've watched my iat's drop well over 20-30 degrees just driving around off of the boost. airflow over *any* intercooler is necessary if you want lower temps.

VegasFD

I've seen intake temps while cruising here in the Vegas summer of 80+. Granted, I don't like it. I'm running an ASP Medium too. Would it be worth for me to swap out my Greddy Airinx for say, an M2 Airbox? Just wondering.

(Sorry for the hi-jack)

rynberg

ahem,

adam c

iTrader: (2)

If you are stuck in traffic, the air under the hood is feeding your open intake with air that is 200+ (F). With a cold air intake, the air coming in is 100+ degrees cooler. No one can say that isn't significant.

If you are moving, the air under the hood will be something less than 200+, but will still be WAY hotter than the outside air temp. Get a stock airbox, and modify it for better airflow. If you are tracking your car, get a better intercooler.

Mahjik

iTrader: (1)

Maybe, but your not on boost so it's not really an issue (especially due to the richness that our cars idle at).

rynberg

A key thing to note in this discussion is heatsoaking.....

You should try not to go WOT right away if your intake temps are a result of heat-soaking (slow traffic on hot day). The computer will pull fuel due to the intake temps...except the air hitting the motor will actually be much cooler than the IAT sensor is reporting. Result = slightly leaner condition than normal. This shouldn't be problem except for those brave (idiotic) souls running with a tune that's too close to the edge.

airborne

200+ seems a bit high for underhood temps. i have a thermometer with a wired probe that i used to test underhood temps by my pettit intake and it never got over 140. worst conditions were city driving, ~80F ambient.

Mahjik

iTrader: (1)

Yes, Adam was exaggerating a little but I know what he was getting at.. Its just not really that big of an issue unless like Rynberg mentioned, someone is tuned to the edge.