Such a thing as to much cold air?

No such thing as too cold intake air. If the stat controls engine temps, so if the enging starts to run cold, fit a stat from a car intended for a colder temp, they open at higher running temps to keep the car running better. Or fit a higher triggered fan temp switch and a decent coolant temp gauge if you don't want to mess with the stat opening temp. If you amke changes monitor it.

sweet idea! i think it'll affect aero dynamics more than anything myself but then the glof is about as aero dynamic as an old volvo :) i think it'll be fine myself but as sleeker says best monitor it!

if you wanna change the temp you could fit a scoop and stick a fan underneath? the MR2 is slightly different but a few people have engine lid fans fitted, i hate the noise they make but there pretty light and can bring the temp down by as much as 10 degree's!

Surely it'd be better not to block off the vents like that and replace them with fans, rather just have the fans as an addition to the vents.

Rogue are really doing well for themselves though, good on them.

ermm the fans are underneath the vents? i dunno what you mean? lol

you can see better in this pic

yeah there doing some good shit, well helpful people too!

Might suprise yout o know that a mk2 golf has a drag coefficency rateing of

I might louver the bonnet if I can find a place that does it for a reasonable price, or go for carbon/fibre glass since they are alot cheaper than i intially thought... but its pie in the sky atm.

It shouldn't providing your thermostat works.

Your heater takes a lot of heat from the cooling system if you run the interior ventilation fan at a high speed...

The Cd is only part of the story. What's the frontal area?

Hmmmmmm pie.

If it suffers from cold in winter, surely the traditional solution of a bit of cardboard/plastic/foil in front of some of the rad is entirely adequate.

(not sure what Vamp's on - his solution seems to be to increase the airflow, which would be the opposite of what you're after)

cheers, clive

The thermostat will take care of the engine temp. Leave the bumpers on, you'll be glad you did if you clip a tyre wall while doing a track day. Not sure to what extent but doesn't the front bumper help secure the chassis legs together?

i was thinking better air flow (mainly for the engine) followed by reducing the heat a bit to be a good thing?

If your engine is suffering from excess heat, yes. But if you read what remus actually wrote (quoted above), he's worrying about doing this a little too much and overcooling the engine. Ie the opposite problem to the one you're solving.

cheers, clive

Nope it utilises 4 bolts that are used to secure it though, it doesn't actually serve a purpose except for cosmetics and wind deflection.

ahhhhh i see now silly me eh :)

I mean look at all the blanked off space around the fans, that should be empty so the whole vents are exposed and the fans should just sit there in addition to the vents rather than adding all that blanking surround. surely if the fans conk out temps will go up.

I think it's a good point. You'll have a lot more engine bay air-turbulence with a massive hole in the front. It'd work better if you blanked off the front rather than mesh it (or, erm put a bumper back on), plus to be honest I really think that would be faaar too much open space - you'll be able to see right into the engine!

or..

my god no.....

you're not thinking of putting neons in there, are you?

;)

Chris.

I suppose I could create a template and get a thin section of metal laser cut to fit, it would be more difficult to secure but it might be worth it.

But when taking into consideration aero-dynamics, having a metal plate on the front could create more wind resistance than the negative drag of turbulence increased by the meshed area. Unless of course I can angle it to deflect the oncoming air more economically without it looking out of place. I could also combine both ideas... but I run the risk of over complication.

now that's a plan!

I'm trying to lighten the golf and not much else!

I'm not an expert on aerodynamics, but IMO it would be worse to have a lot of turbulence running around the engine bay. If there is a flat section at the front of the car, air will be deflected around it and not much else. The frontal area that hits the air won't be massive. However, if you allow the air to flow straight into the engine bay, it'll have to move around the engine and hit the back of the engine bay, which has a much greater surface area. I suppose it could deflect under the car, but I still think it would create quite a bit more drag. I would try to keep the mesh section to just in front of the radiator, and block off the rest (if possible).

If you're dead set on a mesh right across the front though, I see no harm in trying it out just to see if it really makes a difference.

You could fit it with radio control, so you don't need a heavy driver in there ;)

Chris.

i wouldnt have thought the drag would make much difference until you hit, say illegal speeds?