Metal in coolant

[pittss1c]

I bought a recently melted and rebuilt banshee.

Most everything is working well, but I had some overheating in the woods.

In the process of debugging the problem, I found that there were specks of what looks like metal in the coolant (aluminum maybe) it seemed to float around in the coolant.

Is this just leftover from the meltdown (meaning they didn't clean it up well)

Or could this be something else?

[gumby6t9]

Were the cylinders bored out when you rebuilt it? Did you wash / clean the cylinders out before you put it together?

 

When I had my cylinders ported I washed and washed and washed my cylinders out to where I thought they were spotless and still ended up having aluminum "speckles" in my coolant!

[pittss1c]

The rebuild was done before I bought it, so I don't know who did the work. It is anyone's guess.

But, it sounds like it is reasonably normal to have some in the coolant.

I did a half assed flush of the system, and it is better, but still has a few flakes.

[bansheesmoke]

The rebuild was done before I bought it, so I don't know who did the work. It is anyone's guess.

But, it sounds like it is reasonably normal to have some in the coolant.

I did a half assed flush of the system, and it is better, but still has a few flakes.

 

 

what happend when it overheated? did the water bubble in the overflow bottle under the seat? or did it shoot or steam out of the overflow hose?

[inthemail]

yea your gonna have flakes in your cooling system if it was ported/bored or planed whatever. especially a head plane (somewhat hard to flush out that shit) anyway, good luck on the new machine! stay away from cam chains. about the overheating.

 

have you checked your impellar yet? to do this you have to remove your kickstarter, remove your clutch side case cover, and from there your water pump will be forward on the cover attached to a white gear thingy. if ya wanna check that out we can step by step it for you. a good idea is to install an aftermarket aluminum one (prodesign) because the stockers can and have melted on people before. and you dont want that do you.

my concern here is, if it was blown and melted down perhaps your impellar felt some of that abuse as well, just a chance anyway.

[pittss1c]

I saw the overheating on the temp gauge. One time I could hear it bubbling in the overflow but no steam.

I have a trailtech and it says I peaked at 265! I only saw 245 when I looked, but that was enough for me.

I was scared, I had just leaned the mixture via the air screws, so I backed off a half a turn, and bought some engine ice coolant. That is when I found the metal flakes in the coolant (I had never looked before)

I opened the water pump up expecting to find a melted impeller, but found a billet impeller installed already. I turned over the engine a few times to see that the pump was rotating.

I have never seen a problem in the dunes (even hill climbing) or any other area. I have only seen this overheating in the woods.

Many people have said it happens to all of us. I wonder if it didn't happen the first few rides because it was so overly rich before.

[sinisterboo]

Turning the air screws only changes the mixture at idle, so thats not gonna make it get hot.