Thought i would have a go at aiming the air at the induction kit a little better..And i found that a 300mm length of
extraction fan ducting 100mm dia did the job nicely



what do you think


jac

Could the extra chilled air from the Aircon be directed to the air intake for the engine?
or would that create a time space continuum where a parallel universe exists and french cars are well made?

?.............

the chilled air goes into the car, why would you want to direct it back out again

what about a tube from the back window? cold air passes driver through the back window and then a tube back into the inlet

sorted!

well its my understanding that the colder the air that goes into the car the more ompf you get, so in these hot days recently wouldnt it be better to pump the cold air from the aircon into the engine's air intake as it would be colder than the air coming from outside ?

but the air entering the car is chilled in the dash........no where else, how would you route the cool air out again

routing a pipe from the rear window..........what run it over the roof..it will end up looking like the Delorean from Back to the Future.

what you have done there Jac is quite sufficient

Funny enough Brettster I was talking about Doing that at work.. But In the recent heatwave I thought it was nicer to have the cold air on me Anyway..lol and as i know nothing about A/C systems I thought it was safer to leave it alone.lol



Jac

I just thought that having the air going straight at the cone would be better than it was with the original duct about 8" away from it blown air everywher but where it was needed

glad that big beady eye saw me taking the *****!

..........or was you having a Blonde moment and realised after you posted

My only concern is that where its now right at the cone... What would happen Hypatheticaly speaking if rain came through when driving at speed and soaked the cone allowing water in ? (or would this not happen) ?




jac

Personally i would have made a plate to cover the front/top
of the cone to contain all that lovely cold air around it?

Nice job though and should work........

Thats comming next.. shhhhhhhhh

B&Q sell some nice sheets of alluminuim which I was going to cut bend and rivit with maybe a perspex panel in the top !... Just getting time to do it lol




jac

you wont need to worry about rain...the duct is still the same duct as was used with the airbox....

well yeah.. was even gonna beat a hole out of the back window

you would be better using a glass cutter for a clean crisp hole

Dont know to much about the GS i.e if they suffer from heat soak like the IS
but any kind of cold direct air is good for any induction kit?

So i look forward to the finished article.........nice one jac

the heat soak dilema is quite hard to prove.....

on the is200 the air is fed by a snorkel, whilst the car is moving air is not sitting in the airbox long enough to suffer from heat soak.

this would also apply to the GS

HEAT SOAK WILL ONLY COME INTO PLAY WHEN THE CAR IS MOVING AT SLOW ENOUGH SPEEDS FOR THE AIR TO PICK UP RADIATED HEAT FROM THE PLASTIC OR METAL COMPONENTS OF THE AIR BOX.

a cone filter as currently fitted by Jac, in its current configuration is actually allowing MORE hot air to be drawn into the engine....the cold feed will have eliminated most of this while the car is moving, but while moving in slow traffic will actually be picking up more hot air than with his factory airbox.

While at JAE i was talking to Gerald about induction kits....they actually tried a very well known makers inductio/filter the is430 actually lost 7hp even with directed cold air......

they claimed back the 7 hp when they refitted the factory airbox

unless the cool air is picked up from a clean source, and the filter is TOTALLY shielded from the engine..you are technically wasting your time

Is'nt that what i said though,DIRECT cold air feed works much better

jac is on the right lines,when finished it will be housed and have its
own COLD feed.

RS's,Subarus Evos all have vents to take away the heat generated in the bay
there not there for show,it serves a purpose which i feel the IS is lacking,to
disperse ANY heat in the bay is a good thing.

i also said that pete............


what i am saying is......

that an induction kit on its own...DOES NOT solve a heat soke problem

i know Jac also stated he intends to box his filter and does have a cold air feed....this is why i stressed the point





i have been tuning and racing cars for many years, i know the effects that hot air has on performance, i also know that, induction kits...DONT always do as there advertised

i am sure when TTE chief engineer and the ex-chief engineer for Brabus told me....



with his test facilitys would get an accurate reading.

what i am also saying is, i belive the factory set up on the is200 and gs..with the cold air feeds fitted as standard is as near as we will get to a satisfactory arrangement without having to succeed to elaborate systems

can i add........

if jac still has his original airbox, if he was to place the Blitz filter within this box, on a slightly extended pipe,entering the box through the side and use the scoop to direct the air in as it does, then he will be making a completely sealed box.....but using the advantages that the cone filter has.

this method is used in saloon class racing......

Mat,of course your right but,if you have a direct cold air feed (housed)
with vents in the bonnet you will get better performance albeit small
...after all why would you want to do the mod on the Monsters h/light,
its the same affect?you need vents to disperse the heat generated you
dont want heat swirling around the bay being sucked into the cone.

It does'nt surprise me that they lost out on the 430.....V8s generate loads of heat
(no vents on the 430 that i could see)

i agree, vents will only work at medium speeds though, the principle is that air travelling over the vent(bonnet) creates a vacume within the vicinity of the vent which draws the hot air out.

at higher speeds the motion of the car moving forward extracts the hot air, at slow speeds the heat is still trapped within the engine bay cavity.

ultimatly as i stated earlier, if you can TOTALLY seal of the induction point then you are a % of the way there.....

but we should then look at the radiated heats effects on the throttle body, the factory inlet trunking and also the air mass sensor or temp probe.

you would sort this by the materials there made off....Race spec carbon fibre and or thermal barriers on these parts.

then you can look at water injection aswell to cool the incoming air.

to put my views generaly.........

ive seen amazing claims made for induction kits.....and sometimes those claimes are way off.





you are also correct on this assumption....however i am banking on the ram effect in this application..as at town speeds this modification will be of no benifit, but then this is where the intercooler should reduce the air mass, and coupled with water injection which i will be looking into sooner rather than later.

and also when i start to use the car for competeing in trials such as "10 OF THE BEST". i will look into CO2 cooling for the intercooler.



i would like to make it clear i am not knocking Jacs efforts, only that i like to give an Unbiased technical view of products or processes which in the heat of Tuning sometimes become cloudy and the technical facts become muddied by hopes and inspirations of what a product Should perform like

I cant believe it.................
1)you agreed on some points of what i said?

2)El president,super moderator is saying we should all be driving flat out(i totally agree Mat)

were all on a need for speeeeeeeeeeeeeed

Well.. I am not so worriead about performance really.. after all I bought a 1.8 ton gs300 for ***** sake...lol I am just well happy with the tune it palys when i bury the throttle.. ohhh that sweet music... It was just an after thought about cooling.. I was impressed more than enough with the rolling road figures anyway.. Now where did i put that rocket fuel and noz bottle... .. Anyway i will see what I can do on the box front.. even if it is just for looks



jac

Very interesting, I'm sure alot of members will be taking notes on this topic ...
Well done guy's..
Are you both still friends