john_d

can you have an intercooler that is just too big for turbo/engine? or is biggest always best?

JamboRS

bigger is not always better
core design and airflow to it are much more important

dave_s2_rst

iTrader: (2)

sorry to hijack the thread, but ive been looking at a few now, most would say go for grs, but would an airtec be suffice? Not really concerned with cost, just in desperate need and grs has a bit of a wait

milesy23rst

iTrader: (16)

GRS are very good but airtec have had great results and are superb value for money

orionmojo

iTrader: (1)

thats what i have heard, but aren't they really heavy?

not that it matters too much i suppose.

milesy23rst

iTrader: (16)

They are heavier yes but they still work very well

Rob_DOHC

iTrader: (4)

I've had a grs and now have an airtec, i haven't run the car with it yet but i wouldn't exactly describe it as being heavy, a little more than the grs but not massively.

And yep bigger is not always better, the bigger the intercooler, and the longer the pipe work the greater the lag. This is one of the biggest arguments for a good charge cooler.

Ultimately an intercooler will give cooler act and the larger the intercooler (generally if well designed) should in theory give lower act's.

Rob,

*****EDIT******

What a total bellend, i actually have a radtec not an airtec so any thing above substitute airtec for radtec lol

dave_s2_rst

iTrader: (2)

cheers for the responses, at what point would an airtec be hitting its max? Would like to go zetec turbo, currently zvh on 14psi

milesy23rst

iTrader: (16)

Imo if you are going zetec turbo then go for the grs mate

Rob_DOHC

iTrader: (4)

GRS is brilliant mate, although there was a post on here a while ago saying there was a test done a while ago or something and the radtec performed slightly better than the grs,

Grs is probably better quality and at a very good price, but there won't be any massive difference in air temps.


Rob,

diamondrst

wot should the cars air temps b below 30c or below 60c i have a radtec front mount and im starting to think it doesnt do its job properly lol

Karlos G

iTrader: (4)

Radtecs are spot on mate, TOTD done back to back testing aginst the GRS and both performed equally well!

I see around 35 running 27psi peek boost, obviously at stand still after a run that can creep up to near 60, but shouldnt be any where near that high when moving.

dave_s2_rst

iTrader: (2)

karlos are running a radtec?

diamondrst

When moving fast i see 29 to 31 when sitting rises to 60 but driving normaly i see 40 to 48 is this too high

ROB7656

i run an airtech and it seems to do its job well compared to the old pace interwarmer i had. not a bad kit and simple to fit. only thing to consider is that the water temps are up as the rad is blocked by it.

diamondrst

This is why i want a grs because i wanna put fans on the rad without cutting the bumper out

crazycage

what are your acts @7k in 5th
on a top speed run?
o

macrs

Just to add to the mix....

I've been running a pro-alloy for three years and running temps have always been great. Had the pace 'interwarmer' previously and the pro-alloy one wipes the floor with it.

Mounted it with twin fans and no bumper cutting!

StephenC

NMS double cossie cooler always performed well on mine, my ACT guage from rainbum fooked itself a few months in to use but as far as I remember I saw very little heat rise from the cooler, under very harsh driving (ring).

Versus_Creations

iTrader: (1)

Firstly there is an optimum for everything. Either too big or too small is no good.
Too big and you will have lots of lag and lame throttle response. Too small is obviously high ACT temps.

From my experiance over the last 12years the GRS intercooler has always out performed every other intercooler i have used or worked with with genuine figures from diagnostics equipment and laptop etc.

Secondly the cheap ACT gauges available are not accurate at all. Many of my customers have them and when compared with real readings from a laptop the guage is more than 20 degree out at times. ? So anyone quoting figures without decent gauges is not worth bringing into the thread. Also i have noticed people guessing that their temps are better but how do you know. ?

Last but not least lets talk about weight of some intercoolers and the materials they are made from.

Regards

Karlos G

iTrader: (4)

Yes mate!
Closest log i can find is at 6850rpm in 5th and ACT was 41c, I think that's as high as I have ever seen it when actually moving.