GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Topic started by: Starry on 15 March 2004, 19:57

Title: intercooler
Post by: Starry on 15 March 2004, 19:57

         

i drive a 1.8T and have brought a front mount intercooler which i was thinking of running in line with my original. i was chatting to the man who supplied it and he said that i may have to do somthing with the mixture if i run both at once. is this the case? also i was thinking of rigging up a cold water feed to spray the i/c when im giving it a bit, is it any good an idea or is it just a gimic..
any help would be great thanks.....  

Title: Re:intercooler
Post by: antgti on 15 March 2004, 20:53

right then, Yes it is true that the colder the air going into the turbo is the denser it is thus meaning a greater amount of oxygen is injected creating a better burn and thus a quicker car.  And yes you would think that by having two intercoolers you would get more cold air.

But!

What you have to bear in mind is how quick you can get the air into the turbo, now if you have two intercoolers rigged up yes you have twice the cooling area but you will end up slowing the air speed down even more and actually end up retarding the performance.  The only reason i know this is because i tried it with a  mate on a punto GT turbo, they have the small one like on the golfs and you can then uprate this to a full on front mounted jobby like yours, what we did was then rig up both intercoolers and the car ran like sh!t, it was spluttering all over the place.

You will be better off just rigging up the new front mounted jobbie for a good performance gain, if you want to go further then use the space where the old intercooler sat to plumb in a cooling radiator for a water injection set-up, that would be a lot more use.

Title: Re:intercooler
Post by: Starry on 16 March 2004, 17:58

thanks for your help ill think about it a bit more...
p.s. do you think your mates punto ran sh*t becouse of the fuelling ????

Title: Re:intercooler
Post by: antgti on 21 March 2004, 01:39

Starry,

I just read this on the Audi TT site, i was'nt aware of this but it seems the 225BHP TT runs a twin intercooler set up, have a look and see if you can try it out, dunno now i've seen this it may be wortha shot.

http://www.tt-forum.co.uk/content/tuning/index.asp?navID=tuning&subid=in

Title: Re:intercooler
Post by: Starry on 21 March 2004, 11:20

thanks for the info i just had a look it all seems very easy to plumb its just the amount of air and how fast it flows is the tricky bit. i have mounted the front mounted i/c now on its own and seems to run ok it's going on the rollers in the morning so should be intresting.