Choosing an intercooler

[captainbizzaro]

After some advice from those in the know...

Putting a 13BT Series 4 engine in my FB at the mo...

http://www.mazdarotaryclub.com/forums/showthread.php?t=67008


...and am in the midst of choosing an intercooler to use. So resisting the urge to go and buy the biggest one that\'ll fit can someone advise to any does and don\'ts in this minefield as I want drivability not massive lag but on the other hand I want it to be effective and maybe futureproofed for upgrades down the line.

Cheers

[turbotoaster]

well what sort out power do you want, if you have an idea, will that figure ever change?

if its a low power setup then running a smaller but effecient cooler allows more space for the radiator.

also then it also depends what the vehicle will be used for, track, drag or street.

If you can give us this info we can assess whats best for you

[captainbizzaro]

Shooting for 300 at the fly, mainly street use and the odd track day but nothing serious. Turbo will be either a hybrid series 4 with larger hotside or a t3/t4. When I break it I will get it ported but that\'ll be as and when. Hopefully not too soon after it\'s built lol.

[turbotoaster]

ok not alot of power then, something like the xspower intercooler should do you, i ran up to 17psi on one and made 360bhp on the dyno with one.

anything bigger i think isnt needed to be fair.

what are you going in terms of oil and watercooling?

[captainbizzaro]

Nah not massive power but then an FB weighs owt. Using a turbo II oil cooler and not sure what rad at the moment-I want to see what room I\'ve got once the intercooler is in.

[Furb]

for 300fwhp..
 
use 2,5 inch piping(less lag) and pretty much any standard ebay core will do fine.
just find out how much room you got.

[captainbizzaro]

Cheers Furb and TT, will check out eBay and xspower

[turbotoaster]

can you show us some pictures of where your gonna fit the cooler, from that we can help you find the right one for your needs, id imagine its gonna sit inside the engine bay and be infront of your rad, if so space will be limited, its probably gonna be better to go for a \'backdoor\' setup cooler to have loads of elbows.

small but thick core to help with cooling

slightly larger but thinner core if there isnt enough room for big depth

http://cgi.ebay.co.uk/TOYOTA-MR2-TURBO-SW20-90-95-INTERCOOLER-HUGE-CORE-DEPTH-/400169522310?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item5d2bf65486



http://cgi.ebay.co.uk/93-97-MAZDA-RX7-RX-7-FD3S-V-MOUNT-INTERCOOLER-KIT-/190455319090?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2c58058a32

slightly larger but thinner core if there isnt enough room for big depth, you can get the intercooler without the pipes for £60 on ebay, but i didnt have enough time to look for it

[captainbizzaro]

Ok it\'s easier to show you with the 12A still in him....



It\'s basically gonna go just forward of where the existing rad is sat and the new rad will sit between that and the engine with the intercooler pipes running over the top of the rad if that makes sense. It\'s quite a big gap-the oil cooler will probably be mounted on the front beam. I\'m gonna utilize the existing rad side mounts anyway if I can then piping should be fairly straight forward nice straight run from cooler to UIM.

[turbotoaster]

holy retarded artic turtle thats loads of room!!!

im not a fan of v mounts but you could do a lovely simple one in there with that amount of space.

i assume if you want a front mount you will need to lower the height of your radiator so you can get your boost hoses going over the top of it.

what sort of inlet are planing, BT, REW, RE?

id put the battery in the boot if i were you, this will give you alot more room and options to play with.

if i had your space id make something like this.




but send the boost hoses over the top of the rad instead of around it.

having them come down from above is more flow effiecent than creating 90* angles

[captainbizzaro]

Haha yeah there is a fair bit of room, you\'re right I will have a lower profile rad to allow the boost pipes to scoot over the top.

So if I stick to 2.5" piping and one of those eBay intercoolers I will be good as gold then-still minimal lag, as thats my biggest concern. I want it to be quick on the street rather then rock up with big numbers and an engine that needs two days notice to spool up.

[overboost]

I have a Blitz one that I am willing to let go for 200. Over 1400 pounds new + vat.