cooling issues..., fine when driving, spikes when stopped. Options

[malaga_red75]

subaru JDM EJ25 DOHC

So, got my conversion finally road worthy and have noticed that while I am driving around, the car stays at around 200 F. when i stop, or let it idle in my garage... the temp slowly climbs and doesnt stop (i shut it off around 230 F). I am assuming this is an issue with my fans.

I am running a front mounted radiator, using 2 push-style fans. A few things that i think may be wrong...

-There is no shroud around the fans... just the shroud that seals the radiator to the front (since they are push fans, they are mounted on the front side of the radiator, in between the radiator and the nose of the car)

- there is about a 1 1/2" gap between the fans and the radiator (this was just the way that ended up working for mounting the fans)

anyways, i am pretty sure that the cooling system is working (no kinked lines, thermostat working, fans do turn on) as indicated by driving and the temp staying cool, there is just something not working when i stop moving. let me know what you guys think.

-Peter

[charliew]

I guess you also don't have the oil filter cooler/heater bypass lines on the na motor? subaru designed the suby to mainly be a snow car and the idea of the bypass was a lot of trouble to design but it is for more consistent cooling and heating year round. The ideal street car motor temp is to keep the oil and motor about 200 degrees, as quick as possible, that keeps the moisture boiled off the oil and keeps the oil at it's designed viscosity to get everywhere as fast as possible and to keep the motor parts at their correct tolerances to prevent cold start wear and tear. At 20 degrees oil gets real thick and slow so the bypass lines kept the warm coolant around the motor until it warmed up, and out of the radiator, including warming the oil filter.

The importance of bypass lines on subys has been discussed since subys first were put in other street cars. Outback my not use bypass lines on sandrails though.