Radiator Caps

I have searched but my search skills are poor.
I want to put a stouter rad cap on my 06 510.
Currently has a 1.1 . Folks here seem to like a 1.4 or a 1.8.
The ones I'm finding are 20lb and 30lb. I'm not sure how they correlate to one another.
Also, rad caps do not appear to be brand specific. Is a rad cap just a rad cap? Interchangeable? Never bought one before.

What do I need and where can I get it?

Thanks

I have a Kawasaki 1.8 on my 08 TC 510. fits nice.

Is that a standard cap that Kawasaki uses? So if I go to a Kawi dealer and ask for a radiator cap, they should give me a 1.8 that works?

I am pretty sure it is standard, the part number is 49085-1077

Thanks for the part number!

I have one of these on my 250

http://pitposse.com/ourahipr16ra.html

Maybe this will help?
http://www.cafehusky.com/forums/showthread.php?t=4997&highlight=radiator cap

As mentioned in link, I bought a CV4 20psi cap (1.4bar). I had heard good things about, and it appears to be a nice cap, but due to work/weather I haven't been able to ride since I bought it at the end of Aug (& now have blown truck engine) ......so not looking like I'll get a chance ride and try that new cap until next spring now.

I know that the KTMs went from 1.4 to 1.8 a year or so ago, however they do not have an overflow tank. The 1.1 seem to be ok assuming you are using a top notch coolant imho.

I did a little research on the Kawasaki radiator caps.

All from a KX500 parts list:

# 49085-1070 ----- 1.1 bar
#49085-1073 ------ 1.6 bar
# 49085-1077 ----- 1.8 bar

The 2005 KX450 takes a 49085-1078 but it doesn't say what pressure rating it has. Whether it fits the husky radiator ... I don't know.

Dave

Husky ran stout Toyo rads through 05, switched to flimsy Alexons in 06-07 and back to Toyos in 08. My 07 TE510 came with a 1.4 bar cap.

I run the CV4 20psi cap and removed the overflow tank and hoses. Working good so far.
They pretty much fit universal. It fit my old Honda, KTM, and the new Husky.

I have a 2006 TE 510 and yes a Kaw cap will fit BUT WHY if you run the Zip TY waterless coolant the only reason you need a cap is so the coolant will not spash out as it will not boil .Going on 4 years many expert races and rides and never lost a drop
Stock works for me The stuf is waterless so it will not boil

Almost all liquid boils, just at a higher temp. Ive had my engine ice boiling more than once. Most waterless coolents ive seen boil at around 370f, I think engine ice boils around 250f. By getting a high temp radiator cap its doing the same thing. keeps the system pressurized and prevents water from boiling.

At 370 i would think something else will blow before the coolant does

With a higher cap you put the coolant system under more pressure
Why do that if you do not have to .Plus if there is no water it will not rust and wear out the parts.
But everone is different so do what works for you

For peace of mind, a higher pressure cap and waterless coolant is for the rare time that my engine temp spikes and wants to boil out coolant...now it won't do it. In the past, I have puked out some and at times, all of my radiator fluid (Engine Ice). I don't want it to happen again because when I lost some of my fluid it compounded the issue driving the temps up and up, puking more and more coolant. I also have the Trail Tech Vector with a temperature gauge to monitor things.