engine damaged?

i lost 1 1/2 cup of coolant after 2 hours of hare scrambles(70% tight wood). :ride:

my yzf 450 2006 is stock and had about 10 hours before that race. it's my first time on a 4 stroke and i have not race in 15 years.

you guys helped me choose the best one. i just love it. it really makes me feel 10 years younger.

do you think i could have damaged my engine with 1/3 of the coolant out?

what should i do to prevent that?

thank's again! :thumbsup:

I would change your oil and make sure to look at it closely. Your coolant could be getting into your engine if you blew the head gasket. Otherwise if you were going through slow tight and twisty stuff you could have just heated her up and lost coolant. Don't let the bike idle long either it will just spew out, this bike needs airflow. Maybe run more water than coolant since this isnt a cold time of the year, and water is the best at cooling.

:thumbsup: I'm going to have to agree with the last guy change your oil look for any signs of water inn it the only other thing i can tell you is you have a defective radiator cap had it happen to me on my 426 minor fix but it worked didn't cost alot for new one also replaced coolant with engine ice.hope this helps.

If that's the kind of riding your gonna do then add an overflow tank/chamber. Cheap mod! Yz's have a smaller rad. capacity than the wr's.

Have to agree with the above post.

Did some insane enduro sections of a local spot and the bike was getting hot. As soon as theirs no air flow and the bike is working it is going to get hot. It was only in superhard sections that i had to have a second or third or fourth go at, that it started to get hot.

But if i was going to that slow/tight riding often i would think about getting a overflow tank off a WR and hooking it up just be on the safe side.

Should cost hardly any coin.

Any one done this mod before with the WR catch tank?

Im running a 02 YZ426 that could do with a little cooling down...

First thing I would try is a higher pressure radiator cap.

More than likely you are fine. Use some water wetter or engine ice for a little better cooling.

As said before if you plan on this type of riding install a puke tank. you can buy the WR tank or just fab one up. There are many place to fit one on the bike and it will catch overflow and allow the rads to regain what it pukes when it is real hot. It is the same concept as on your car. This is not a real magical thin or a very technical mod, it is a bottle with a tube stuffed in it (make sure the tube extends to the lowest point in the bottle.

All of the above is good advice if you're going to spend a lot of time in the woods.

> Use Engine Ice or Evans NPG-R coolant

> Install a recovery bottle (radiator caps for recovery sytems differ in that they have a seal at the top of the filler neck as well as at the bottom of it. "normal" caps don't always have that, and it's important to the ability of the system to draw the expelled coolant back in.)

> Raise the cap pressure to 1.5/1.6 bars (22/23.5 pounds) (if you still have problems ...you probably won't)

Another good advice would be riding faster in the woods :ride:

sorry for the dumb ass answer, you beat the *?/% out of me last weekend :thumbsup:

All of the above is good advice if you're going to spend a lot of time in the woods.

> Use Engine Ice or Evans NPG-R coolant

> Install a recovery bottle (radiator caps for recovery sytems differ in that they have a seal at the top of the filler neck as well as at the bottom of it. "normal" caps don't always have that, and it's important to the ability of the system to draw the expelled coolant back in.)

> Raise the cap pressure to 1.5/1.6 bars (22/23.5 pounds) (if you still have problems ...you probably won't)

Hey grey, I noticed on the wr bottle there are two tubes that come from the bottle, but only one receptacle at the radiator cap, where does the other tube go?

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