low temp thermostat\high pressure rad cap

[nztintin]

Is it worth getting a high pressure radiator cap and\or low temp thermostat? I'm getting a alloy radiator and upgrading radiator hoses so was thinking of doing this at the same time. Car is semi daily driver\weekend mission\casual track day forester.

[Guest boostin]

Nope, just stick with the standard items. If anything, fit a high flow thermostat.

[BC5RA]

 boostin said:

Nope, just stick with the standard items. If anything, fit a high flow thermostat.

Agreed.

With a high pressure cap you may run into coolant hoses bursting due to the higher pressure.

[Optical]

the zerosports lower temp stat was a good addition for me, i couldnt find any difference in the datalogs after fitting the 1.3bar cap though.

[BC5RA]

 Optical said:

the zerosports lower temp stat was a good addition for me, i couldnt find any difference in the datalogs after fitting the 1.3bar cap though.

Depends, what is your cars main use Optical?

I run from factory a 0.9 bar cap, i wouldn't run a higher pressure cap.

Haven't tried it so can't say, but have done my research; just not willing to see what will happen.

[nztintin]

low temp (71*c i think??) thermostat = high flow thermostat ???

[Guest boostcut]

a high flow thermostat isnt a cooler one lol.. it just have a larger "valve" to flow more

[Optical]

 BC5RA']

[quote name='Optical said:

the zerosports lower temp stat was a good addition for me, i couldnt find any difference in the datalogs after fitting the 1.3bar cap though.

/quote]

Depends, what is your cars main use Optical?

I run from factory a 0.9 bar cap, i wouldn't run a higher pressure cap.

Haven't tried it so can't say, but have done my research; just not willing to see what will happen.

making power

runs at approx 93degrees on the oem stat, 82 on the zs stat. I see no advantage in the former, but having a programmable ecu makes it easier to exploit though.

higher pressure cao just raises the boiling point for more headgasket insurance

[Guest boostin]

 Optical']

[quote name='Optical said:

the zerosports lower temp stat was a good addition for me, i couldnt find any difference in the datalogs after fitting the 1.3bar cap though.

/quote]

Depends, what is your cars main use Optical?

I run from factory a 0.9 bar cap, i wouldn't run a higher pressure cap.

Haven't tried it so can't say, but have done my research; just not willing to see what will happen.

making power

runs at approx 93degrees on the oem stat, 82 on the zs stat. I see no advantage in the former, but having a programmable ecu makes it easier to exploit though.

higher pressure cao just raises the boiling point for more headgasket insurance

With the flip side being higher risk of hoses bursting. Hmmmm, rock and a hard place there....

[Optical]

if you're really concerned you can put a pressure switch in the cooling system, same as the oil system.

if pressure drops when you're up to temp then you have a leak

[swee]

 boostin said:

With the flip side being higher risk of hoses bursting. Hmmmm, rock and a hard place there....

As he is upgrading his hoses and using an alloy radiator i don't see why he should worry about anything bursting... (assuming its all of decent quality and his end tanks aren't plastic)

[Guest boostin]

I was more saying that so Joe Average doesn't go out and slap one on his 20 year old RS thinking its a good plan and blows a hose and cooks the engine.

[nztintin]

yeah good quality full alloy rad and silicon top and bottom hoses from sta parts, will get the other hoses too in time, will leave the rad cap till i get all the hoses done, might look into a low temp t\stat, can't hurt having a new one!