Saturday, November 04, 2006 - 12:08 am, by: Cihan Aday(Cihan)
I have had a probe mounted in my airbox for 6 months and normal operating temps under stop start driving is about 30degrees. Temps are a lot lower with a cold air duct and dont climb as much when stationary.
The engine idles a little funny as the standard computer pulls timing to compensate when temperatures rise. It becomes noticeable over 40 degrees.
I wouldn't take it above 60 degrees, mid 20's is optimal and generally achievable with normal weather conditions.
Mind you, this is all at idle. Once the engine draws air, the engine bay area cools down and temps drop.
Saturday, November 04, 2006 - 02:01 pm, by: Daniel Clarke(Dieseltrain)
Hmm , i never knew about the TB coolant EGR system. My dads 5L had it and we bypassed it. I wonder if you could set up an iced water flow system to run through it to a tank in the cabin or the boot??? I wonder if that would help lower intake temps by much if any?
Saturday, November 04, 2006 - 02:14 pm, by: Chris Davey(Chris_davey)
Cihan: I have the TB bypass done and my intake temps are always high as well. On the highway they stay consisten but as soon as I stop it goes up quickly to 50+ in 25deg weather. My theory was that the stock sensor that I am using must heat soak badly. I was going to fit a JE camira sensor in the inlet to get a more accurate reading.
BTW pmed you.
Ben Socratous DieHard SA I am the fibreglass/kevlar/carbonfibre king!
Saturday, November 04, 2006 - 06:53 pm, by: Ben Socratous(Socrates)
Just get a really low powered dry nos system, 25hp shot for eg. Plumb the injector in the fmic piping and that will take your inlet temps down to single figures.
Obviously can't be used all the time as the bottle will run out, but may be useful in extreme heat conditions? Not to many people are onto the fact that nos is probably better at cooling the mixture than it is making it more volitile.
Saturday, November 04, 2006 - 06:59 pm, by: Cihan Aday(Cihan)
Chris, i'd have to agree that the intake sensor is getting heat soaked. I haven't personally driven around in a PFC powered car day to day so i dont know how long it takes to transition from cruise (30) to idle temps (50), from what i gathers its quick! which would suggest heatsoak from the bung surroundings.
Daniel, id rekon it wont do much mate. Once you're on boost its a split second thing and the actual intake charge wouldn't be very fussed if its only a couple of degrees colder. I suppose if you got the actual whole throttle body to 10degrees (which is unlikely as it sits at 50 degrees when warmed up, i have checked with a lazer temp gauge), it may make a difference.
Sunday, November 05, 2006 - 01:49 am, by: Danny Dinh(Xtc)
on a cold night at 16psi inlet temp about 40c and on a warm day it climbs up as much as 65c. I've already done the TB by pass. I think my engine bay is a little too hot. I will have to cut my bonet to vent it out and probably install a water injection system. It makes a huge difference with 10degrees drop in inlet temp (for my application). I'm hoping for a 10degrees drop after the water injection kit installed. 50degrees at fullboost is good enough for me. Will see in a month time.
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