135i Cooling ?

[e82n54]

Originally Posted by HP Autowerks

You will never be able to drain all of the coolant out, but you will get most of it. Adding distilled water and Reline WW will give you the best chance to battle cooling overheating issues. You do not need to go back to 50/50 coolant/water mix if your winter temps don't go below freezing.

I am worried about corrosion with only water and water wetter. What do you think would be a minimum coolant ratio to prevent corrosion?

[HP Autosport]

Originally Posted by e82n54

I am worried about corrosion with only water and water wetter. What do you think would be a minimum coolant ratio to prevent corrosion?

There is corrosion inhibitors added with the Redline WW, plus you won't be able to drain all the coolant anyway so you don't have to worry about it. We ran our 335i for 4 years with about 10% coolant, distilled water and Redline WW without any issues.

[e82n54]

Originally Posted by HP Autowerks

There is corrosion inhibitors added with the Redline WW, plus you won't be able to drain all the coolant anyway so you don't have to worry about it. We ran our 335i for 4 years with about 10% coolant, distilled water and Redline WW without any issues.

Awesome! Thanks for the advice!

[sour97]

anyone know if there is any bolt on radiator available? i would love to fix the cooling problem b4 hitting to the track. thanks

[Colt]

Originally Posted by sour97

anyone know if there is any bolt on radiator available?

Trying to find more information about this as well. Saw HP Autowerks had an upgraded radiator installed on a car but can't find it on their site

[Eddie135]

Originally Posted by HP Autowerks

To drain the coolant you will need to remove the FMIC to access the drain at the bottom of the radiator. The laternative is pull the bottom hose off to drain the coolant.

You will never be able to drain all of the coolant out, but you will get most of it. Adding distilled water and Reline WW will give you the best chance to battle cooling overheating issues. You do not need to go back to 50/50 coolant/water mix if your winter temps don't go below freezing.

Is there any other way to drain out the coolant without removing the FMIC?

Thanks.

[Jcp135]

Originally Posted by HP Autowerks

When our radiator is finally finished it will be a direct replacement for the oem radiator.

The fan only helps in low road speeds. Once you get up to speed, the air flowing through the radiator will take over and.

Do you have this Radiator finally finished? i need it urgently!

[Dackelone]

Originally Posted by Eddie135

Is there any other way to drain out the coolant without removing the FMIC?

Thanks.

You could pull off the lower radiator hose (the old school way)and get most of the old coolant out. There will be some left inside the radiator though.

[Eddie135]

Originally Posted by Dackelone

You could pull off the lower radiator hose (the old school way)and get most of the old coolant out. There will be some left inside the radiator though.

As I want to try to avoid taking out the FMIC where possible.

Thanks.