New water-air core

[BLSTIC]

Talking about the front mounted intercoolers got me thinking about why I would actually want one. The cooling performance of a water-air cooler in a stop-start environment is second to none (ok maybe a front mount with thermo-fans and an insulated intercooler-throtte pipe), so the reason would have to be airflow.

So I'm thinking about modifying a water-air core for higher flow.

Has anyone done this?

[BC5RA]

Yes..

[BLSTIC]

Ok I'll clarify.

Has anyone done this, what did you do, and what results did you get?

Thanks

Ben

[DRFVDR]

There was a drag car with one

custom built

like Huge

and no I dont got pics

[BC5RA]

Haven't done it, but researched extensively.

Two Legacy heat exchangers added together to make one twice the size, plus high flow pump or wire yours to run at full.

Will be a restriction an 350hp. These mods are more of the support kind rather than power adders and ultimately you'll need to modify the intercooler tank to increase flow.

[BLSTIC]

Don't care about pics, but cars built for something other than straight lines are more relevant. This is more due to the fact that speedway/circuit/rally guys don't modify their bonnets, and need to work perfectly long term than any cooling/flow issue.

That said in nz apparently holes in bonnets are pretty legal. So some big flat shiny thing hanging out of the bonnet probably isn't an issue, as long as it ends up lower than the front bonnet line from the drivers seat.

[BLSTIC]

Modify the intercooler tank? As in the water flow through the (by then twin) cores? Or the radiator at the front?

[BC5RA]

If we are talking about a Gen 1 Legacy system then yes the pre throttle body tank, Modify it in the sense that the turbo to intercooler pipe is Half a shitty plastic pipe (with BOV outlet) and half cast into the tank itself, you could increase the flow buy making up a Y pipe arrangement or a larger single inlet.

[DRFVDR]

Like what catsoup is making

[BC5RA]

 DRFVDR said:

Like what catsoup is making

Yeah but thats only half of the pipe (and issue) you could buy a samco pipe that replaces the same above pipe since the early WRX

I've got one on my Legacy, ultimately it's the tank inlet thats the issue.

[wildturkey]

BC how does that samco setup look? got a pic?

[BC5RA]

You'll have to cut the turbo to intercooler pipe down to suit but thats the kit.

I can go take a pic of it on my car if you want to see it on.

[wildturkey]

ahh ok and how much will that set me back? Yes post a pic of it on ur car cheers. what dia is that bov tube? Any real gains from this setup?

[BC5RA]

Unless you dyno it before or after, i couldnt say.

When you remove the standard pipe and compare the two its a much larger internal diameter so there must be a gain.

When i put mine on it seemed to boost a bit earlier.

I've got a friend who has one for sale, its blue if that suits? i'll PM him to see if he still has it.

[wildturkey]

sweet has he already chopped it down? How much?

[BC5RA]

Sorry bro, he's already sold it. I'm not sure how much the kit would be.. online transaction best bet.

[wildturkey]

yeah looked on tm can't see any