[Memornix]

Do you mean the factory oil-to-water heat exchanger that sits between the oil filter and the block, or do you have an external oil cooler (oil-to-air) installed?

It is an external cooler in front of the radiator with the factory cooler removed. The previous owner tracked the car and now I have been dailying it for the last year or so with plans to take it back to the track.

I am currently planning to keep it but move its location.

 

[Patrick Olsen]

Gotcha. I don't even have my car running yet after all these years, but my intention is to add an external cooler. Not sure if I'll leave the factory one in there or not - the car will still be primarily a street car, so for winter use it's nice to have the "oil warmer" there.

Do you have any pics of your setup? I suppose I could probably find some in your build thread.

 

[Memornix]

Gotcha. I don't even have my car running yet after all these years, but my intention is to add an external cooler. Not sure if I'll leave the factory one in there or not - the car will still be primarily a street car, so for winter use it's nice to have the "oil warmer" there.

Do you have any pics of your setup? I suppose I could probably find some in your build thread.

Here's the current setup

 

[silverton]

EZ is hands down the best engine subaru ever made. no idea what all the hub bub about the EJ is; i hear that engine eats head gaskets like they're going out of style. Obviously you just need to extend the nose of the car 4" so you can fit fans and this:

muchgofasterparts

 

[Memornix]

EZ is hands down the best engine subaru ever made. no idea what all the hub bub about the EJ is; i hear that engine eats head gaskets like they're going out of style. Obviously you just need to extend the nose of the car 4" so you can fit fans and this:

muchgofasterparts

Ha, I actually spoke to the guys at Raptor and they have managed to fit their system in an ez30 swapped GC.

I believe their words were something like, "it fits and it's awesome"

 

[ironiron2002]

Tks. I'm running the factory ez30d radiator in my swap, and it is not enough cooling for that engine. Like climbing the mountain pass on a hot day with the AC on, the temp gauge will slowly creep up till I pull over. The system is properly burped, both by me and by a subaru tech buddy.

Hi We have been endurance racing an gc8 impreza with an ez30d swap for 10 years, a typical day is 8 or more hours of continuous full throttle. We have done multiple events in 90 degree plus weather and do not have over heating issues. Use a 1" core or better with good condition fins. We use this radiator KOYORAD A2779. We also use the stock automatic trans ecu with a 5 speed manual. The stalling issue many people complain about with a manual transmission is solved by installing a vehicle speed emulator. The emulator or signal generator sends a 20 mph signal to the ecu at all times. Can't remember where it came from except that the VW van community support this swap and someone sold them online. The biggest hurdle to solve on our swap was the transmission over heating. The 5 speed has a small front differential that builds enough heat to ruin the oil. A transmission cooler solved the problem.

 

[Seabass20329]

We have been endurance racing an gc8 impreza with an ez30d swap for 10 years… …We have done multiple events in 90 degree plus weather and do not have over heating issues…

1. Thats awesome to hear the 6 has served well enough that you’re still running the same powerplant for a decade

2. For us street car guys, have you ever done any cooling system testing that would replicate stop and go traffic, or any instance where you’re relying on fans alone to move air through your rad?

 

[ironiron]

1. Thats awesome to hear the 6 has served well enough that you’re still running the same powerplant for a decade

2. For us street car guys, have you ever done any cooling system testing that would replicate stop and go traffic, or any instance where you’re relying on fans alone to move air through your rad?

Check out the core thickness on your radiator. Cheap ones will be 5/8" thick. Good ones 1" and all aluminum ones are 1.125". We use the 1".

 

[Seabass20329]

Check out the core thickness on your radiator. Cheap ones will be 5/8" thick. Good ones 1" and all aluminum ones are 1.125". We use the 1".

Thats really encouraging to hear the 1” holds up! I’ve got a weird radiator due to space constraints with an eg33; its a 3.5” core dual pass but only 24”x9.5” surface area, fits up inside the bumper cover almost like an fmic. I’m in the process of wiring the engine so idk how well it’ll cool yet, but I’ll be sure to report back once my car’s running.

 

[sharpman993]

nice.