Hey is that Red Line in a concentrated form? I was just wondering if you mix it with water or you have to buy enough bottles to fill your cooling system. Thanks.

 

I'm surprised to hear the 400 2 stroke can run without a fan cos my 500 HO will not. Even in -20 deg temperatures and running at mid speeds of 20 to 40 mph my fan cuts in every few minutes or so.

 

I know a bunch of mods would probably work fine, but Polaris put that there for a reason, and why take it off when it runs fine stock? What are your reasons for removing your battery anyways?

 

I have only heard my fan come on once on my 400 4by. And its a 98. When i built my other bike I removed it all, battery, fan starter, even charge coils. But i did install a SW mechanical temp guage. Havent had it go over 140. (yet)

 

put an in line temp gauge on your quad and watch when the fan kicks on .....have the gauge on my pred and it dropps the temp dramatically .......TLP

 

I hear that the fan weighs around 10-15 lbs. Anytime you can drop weight helps. By removing the starter,battery you remove another considerable amount. There are alot of guys on here that have done this without any problems. I do think that putting on a temp gauge to monitor the heat is good insurance though.