Heater core delete

[rhenry01]

In preping my '04 WRX stage rally car I thought about scrapping the heater core and all the associated hoses and tubing. But thinking that it might get cold at some of the winter/spring events I decided to keep it. The 818 is another story. My 818 will be a track only car and I have no intentions of keeping the heater equipment.

You can simply connect the supply and return lines with a length of hose but that leaves a lot of hose and tubing hanging around, adding weight and sources of failure. Has anyone given any thought as to how they are going to get rid of theirs?

[Racebrewer]

Where I live, a bigger heater core might be nice.<LOL>

If it is just a threaded fitting into the block, you should be able to get (or make) an aluminum plug. There might even be something in the Subaru parts bins.

John

[apexanimal]

i'll share my info...

from what i've seen it's not as easy as blocking the ports on the block, b/c that will stop flow, but there is a lot of room to simplify...

delete coolant line to tb, delete hc and associated lines, and the coolant filler tank (unless someone can tell me why it needs to be there...)

11060

[metalmaker12]

just make a hose go from lead to return and your done

[JeromeS13]

The upper reservoir is there to remove air from the system, at least when you have a turbo. This is the highest point in the system.


i'll share my info...

from what i've seen it's not as easy as blocking the ports on the block, b/c that will stop flow, but there is a lot of room to simplify...

delete coolant line to tb, delete hc and associated lines, and the coolant filler tank (unless someone can tell me why it needs to be there...)

11060

[Mechie3]

That's not the sole purpose of the header tank. Yes, it's the highest point so it hels with bleeding, but it also allows for convection currents to help cool the turbo after the car is shut off (which is why Subarus don't need turbo timers).

When the car is shut off, coolant in the turbo heats up (a lot) and rises up into the header tank. As it rises, it pulls cooler coolant into the turbo. This process repeates until the turbo is cool enough that it no longer has enough energy to create strong convection currents at which point it is cool enough to not need more than ambient air cooling.

[apexanimal]

^ good info...

considering i've never driven a turbo car with one, i think i'd be okay deleting it... not to mention that this won't be my dd by any stretch...

[Mechie3]

For oil cooled turbos people often get turbo timers to let the car idle for 5 mins after parking it. My mini uses an electric waterpump to circulate water after its parked.

[apexanimal]

yeah all the turbo's i've had are water-cooled... helps cool down be quicker...

mechie - where in indy are you? my fam is in greencastle and avon...

[Mechie3]

Brownsburg. My house is half a mile north of Avon.

[apexanimal]

my aunt owned the chocolate moose in brownsburg... recently closed, but it was there for about 20 years...