Quote from: Capo on October 05, 2008, 10:41:30 PM
The cap on my S4R is marked with 1.5. I assume this is bar which is quite high.

Sure is.  1 bar = 14.5 PSI.

Quote from: Capo on October 05, 2008, 10:41:30 PM
The cap on my S4R is marked with 1.5. I assume this is bar which is quite high.

Interesting.

My S4 cap is marked 1.2.

That's a big jump in system pressure.

I did what you want on my S4R.  I removed the stock overflow bottle and the fans.  I did, however, mount a smaller overflow bottle on my rad that I made up out of an oil sample bottle I got from work.  It has a volume of about 100ml, and I put enough in it that I can see it in the bottle when it's cold, and it dosen't overflow when it gets hot.  I've never had a problem with my bike overheating on the street or the track with the fans removed.

I would strongly recomend against removing your overflow bottle completely, or blacking it right out, because it is the best indication you've got about wether you've got any coolant in your cooling system.  If you develop a leak, the level drops out of your bottle.  You take a look before you go for a ride, see something's wrong, and deal with it befor it becomes a major.  Otherwise, you have to pull your rad cap all the time to check your levels. 

That's just my 2 cents.

Quote from: Speeddog on October 06, 2008, 10:05:10 AM
Interesting.

My S4 cap is marked 1.2.

That's a big jump in system pressure.

My big  I checked it and its 1.2 (17.5psi) at which point the coolant temperature would be 123.5° C (254.3° F)


Its been tried and tested
http://www.ducati.ms/forums/showthread.php?t=22601&page=2

Just to add more amusement to this thread...  Peak antifreeze compares and contrasts EG and PG

http://www.peakantifreeze.com/tech/tech_a.html

There are several pages of this - it just keeps getting better as you click the 'next' button

I am sure there are differences between evans and peak - additives and whatever so - this is for general EG/PG knowledge only

you guys do realize that using the evans isn't recommended as an antifreeze, but a replacement coolant.  No water is used (or recommended!).

Indeed, although Polypropylene Glycol is miscible with water, Evans is quite specific in removing all existing coolant from the system

That is a good point to keep in mind.  I've read so much about antifreeze my head hurts now.  I need some bacon bad.