RSMK4TURBO

Hi i want get a full frontal intercooler for my 90 spec s2,when fitted will there be any issues with the radiator,as the intercooler will be blocking air getting to it.Also you get 2 fans to go on front of intercooler,is this to aid radiator?and do you have to get rid of standerd fan on rad?Any advice would be helpful thanks.

Marc LJX

iTrader: (2)

Last year i fitted a GRS front mount and it does its job brilliantly. (99% of the time)
Normal driving the temp is about halfway, but on a hot track day (Roughly 30 degree C ambient temp) the needle creeps up and is close to the red within 10 minutes of hard use.
That is with a perfectly health water pump (10000 miles old), brand new Radtec radiator, and slimline Kenlowe fan mounted between cooler and rad. I also have a modified front bumper (See pic) to aid the cooling even more.
I was on the track at croft 2007 on the saturday, and was having to back off after 5 to 10 laps to cool the car... (Even with having the heaters on full whack all the time aswell )
It only happens with sustained hard use, so only really bothers me on hot trackdays as said...
Car is running 15psi boost BTW. Less boost may mean less heat?

Hope this helps!

SWITCHBLADE

iTrader: (5)

ive got the pro alloy front mount intercooler on mine, ive also got a pro alloy rad to go with it, the intercooler comes with two fans which mount between the cooler and rad so you get rid of the original rad fan. the pro alloy cooler is made to not restrict flow to the radiator as much as other front mounts. i rang grs and was told their coolers do block air flow to the rad a touch so expect higher water temps but they are better coolers for the lowest act`s if you running very big bhp.

on a hot summers day, with my setup, the water temp reads just a touch above half way max no matter how hard the cars driven, so the air flow through the cooler, the fans which are mounted and the alloy rad make a good combo.........no front bumper mods either but thats something i will be changing soon coz when you look, most of the cooler is blocked off which is a shame.

dave

gus

iTrader: (1)

guess its all a compramise then

i use to have a pro alloy cooler but found it didnt like big boost much

so would have gone for a grs

but as mine is built for track it looks like thats a no no aswell then

SWITCHBLADE

iTrader: (5)

well ive got 260bhp with 18psi approx boost pressure, my act temps at the moment on a hot day run around the high 30`s - low 40`s but i think that could be improved on alot with bumper mods coz at the mo my cooler has about half or a touch more directly blocked via the bumper and bonnet etc........love my water temps though coz most of the time, unless being driven real hard on a hot day, they generally sit at about a quarter on the gauge, my aftermarket gauge doesnt even register lol. ive got a turbo cooler to fit along side the front mount aswell to try so im looking at even lower temps.

if and when i go bigger bhp and boost ill still see how the pro alloy cooler performs as the cooler itself is a work of art, beautiful bit of kit. if however i need to change it will be for a grs item............one thing to remember though, the pro alloy cooler has no pressure drop, i think infact you get a slight increase, the grs you do get a drop on the twin pass cooler......thats direct info from grs aswell.

definately a compromise between the two, if ya running big bhp what do you want, nice low act`s with the added increase in water temps, or do you want low water temps with higher act`s. no doubt someone on here will say theyve found grs to be fine for act`s and they also run good water temps but im talking in general terms.

dave

gus

iTrader: (1)

i was running 2 bar at times

SWITCHBLADE

iTrader: (5)

yeah mate i could see your prob if you was running 2 bar on a pro alloy cooler, im surprised they havent built one with a thicker core to be honest for the big bhp boys. i do know they prefer one offs for people like that but the normal one i have is over £400 off the shelf so id hate to think what a custom item would be.

dave.

gus

iTrader: (1)

i will let you know in couple of days

SWITCHBLADE

iTrader: (5)

you getting a custom one then bud ?

gus

iTrader: (1)

yes mate, needs must and all that


rad and cooler

SWITCHBLADE

iTrader: (5)

what a custom rad too, didnt think youd need that but hey lol. keep me up to date mate if ya dont mind !!!!!!!.

dave.

RSMK4TURBO

Thanks for info lads,my fan comes on just before needle goes on red on gauge is that normal with standard rad and cooler?that is at standstill.stays lower than half way most of time whilst driving.

rstdave

iTrader: (3)

Got a GRS on mine with twin kenlowe fans mounted behind on a pace alloy rad....no problem with water temps on the road even in the summer, obviously it gets hot sat in traffic for long periods of time don't think u'll stop that totally. As Mark lgx said...can't compare fast road driving to track drivin, i can drive it as hard as i want in the middle of summer n rver go above halfway as long as i'm moving....on track tho it's a different story! On the hottest days when pushin hard i too need to have a cool down lap after about 10 mins, temps rocket, that's running 1.5bar boost. Airflow's not a problem i wouldn't have said, i've dropped my grs down from where they're meant to mount and there's plently of air gap between the cooler and rad so i can only put it down to the radiator not being efficient enough. I'll see what happens this year but may have to look into a bigger radiator....either custom or cossie one or somethin??!