Is The Hot Weather To Blame?

[Munkyb0y]

This recent sydney heat has had an impact on the smooth/responsive feel of my car.

Obviously 9psi boost has turned into more like 7 or 8 due to the heat, which i expected.

I'm using the stock intercooler (R33 - 3inch full exhaust - pod - turbotech set at 9psi)

The car has stalled on cold start 3 times on the 3 recent hot days, and the idle was playing up a bit while driving, dropping way too low (will look into cleaning aac valve soon).

Also, the car seemed alot less responsive, less willing to pick up on demand, kind of running rougher.

Never had any of these issues before the heat. Since it's cooled down again, everything seems fine.

My question: Is all this related to the hot weather? If so, will a fmic fix this?

[Lachlan33]

Good question, I too noticed the car was rather sluggish during the heat wave last week. Obviously less performance is to be expected but if a decent intercooler will help this then I know what im getting next.

[32line]

yeh, in hot weather my line turns into a freggin corolla.

[Munkyb0y]

yeh, in hot weather my line turns into a freggin corolla.

lol great, take one skyline, some extreme heat, mix together vigorously, and you get one corolla.

what about the stalling? my car always starts first go, i barely have to look at the key and it's rumbling nicely.

but the last time (sat), i was cranking it over forever, and on the 4th attempt it started.

[ctjet]

i had a cooler on my 33 and went throught the same shit munkeh... so i have a two part answer to your question:

a) cooler makes little, to no difference on start up problems... and

b) you should have a cooler anyways, can runs so much better with one

turboz just dont like the heat... i used to find that on really hot days, it just didnt have the low down pull i usually had

[Nozila]

an intercooler wont help you much at all. its just going to act as a heat soaker when your in traffic. since your in sydney, this would be more then likely the case. on that note, my car also feels like poo lately especially in the 30+ degree's we've had here in the last few days.

[Munkyb0y]

k, well i feel a bit better now, knowing you're all suffering with me

so you reckon the cold start problems might have been related to the heat. maybe from the previous day's heat abuse or something?

[Tangles]

So far my unwritten rule has been to tune the car (dyno - safc/sitc) in the middle of Summer.

That way she feels all ok in the heat, and super-dooper in Winter

[ctjet]

you shouldnt be abusing you car munkeh

get a cooler and deal with it like everybody else...

[Munkyb0y]

no ctjet, i wouldnt abuse my car.

the heat was abusive, especially in god forsaken western sydney, where i was forced to go, but really really didnt want to.

[nuffsaid]

so does a cooler make the car drive on a hot day like its being driven around in cool weather?

[ctjet]

so does a cooler make the car drive on a hot day like its being driven around in cool weather?

no, but it does help a little... you see the biggest gains when its cold

[Nozila]

if i had a choice now to go intercooler or aftermarket radiator, i'd go radiator for sure.

[CEF11E]

best way to get decent performance in summer is a waterspray intercooler jet. I have had great sucess with this.

I had a cefiro a couple of years ago that was set up for drift and saw a lot of track work in summer and it was also my daily driver.

I had a temp probe lust before the throttle body to measuer intake temps.

When I first got the car in summer with the stock cooler I saw temps of 60deg + then I put the FMIC on and saw an drop of about 10 to 15 deg.

but I was getting pinging on really hot days. so I decided to fit a waterspray system. All it really was was a windscreen washer motor/bottle with a hose going to the front of the cooler that directed 4 water mist nozzles on the front of the cooler. It had a check valve to stop it from siphoning out of the washer bottle. It was triggered by a pressure switch from an old washing machine that was set to 4psi.

As soon as you started to boost it the system would switch on and spray water in a fine mist onto the cooler. It was amazing it dropped intake temps to about 5 to 10 deg above ambient. and stopped the engine from pinging. I am going to do the same mod this summer on my new car and will do a writeup for those interested. All up it cost about $70 for the patrs and a bit of fiddling but its a really good mod. you just have to remember to fill up the bottle every time you fill the car as it only lasts for about a 300k's with spirited driving on a small scource.

[nuffsaid]

sounds good

[Resin]

Cef11E

i remember you talking about that in the cefiro section ..awhile ago .....someone reminded me about it again the other day so i was a bout to look for info on it. but yea write up it up ....!

[Munna1]

Hot weather makes a big difference especially on a turbo car

[The Mafia]

do you have a vent to atmosphere bov?

Edited October 17, 2006 by The Mafia

[GeeTR]

do you have a vent to atmosphere bov?

Hehehe, i foresee a "your AM BOV is leaking, put the stocker on"

[The Mafia]

no, even if they don't leak, if you are running afms and a perfect non leaking BOV then you will still stall and puff smoke off the throttle.