Coolant catch tank

Hi,

I have an exc 400 with the 453 conversion, I want to fit a coolant catch tank to stop me loosing coolant every time things get slow and hot.

My question is how does the coolant suck back in when it cools down because the cap release will not be open then and that will prevent coolant returning to the rads?

Cheers

Neil

In the canter of the underside of your radiator cap, you'll find a small, dome shaped steel check valve that closes against pressure in the radiators but opens to prevent a vacuum from forming as the coolant chills. It's through that that the coolant returns.

That makes sense thanks for explaining that!

Neil

Here is what I did for a catch tank.

I tried the little RC airplane tanks but they don't hold anywhere enough coolant and the fittings don't seal properly after awhile causing them to leak and lose vacuum. Others do the turkey baster method but again I can't see them holding enough coolant to be worthwhile.

A friend found this setup for me and it works rather well. It uses an overflow tank, cap and gasket from a 2012 Yamaha WR450.

Part #'s:

1Qty. Qty. Qty. Part Product

Ord. Ship BO Num. Name

---- ---- ---- ----- ----- ------ --------------

1 1 0 26H-21874-00-00 Yamaha - GASKET

1 1 0 26H-21875-00-00 Yamaha - CAP

1 1 0 5UM-21860-E0-00 Yamaha - TANK ASSY

Total cost of parts is about $45.00 and you will need to supply some hose for plumbing the tank. The setup is a bit more expensive than some others but installed it looks rather "factory" and works perfectly. I wish the tank was a bit larger as I can fill it to overflowing in the tough stuff but it's way better than not having it at all.

http://www.flickr.co.../in/photostream

Here is what I did for a catch tank.

I tried the little RC airplane tanks but they don't hold anywhere enough coolant and the fittings don't seal properly after awhile causing them to leak and lose vacuum. Others do the turkey baster method but again I can't see them holding enough coolant to be worthwhile.

A friend found this setup for me and it works rather well. It uses an overflow tank, cap and gasket from a 2012 Yamaha WR450.

Part #'s:

1Qty. Qty. Qty. Part Product

Ord. Ship BO Num. Name

---- ---- ---- ----- ----- ------ --------------

1 1 0 26H-21874-00-00 Yamaha - GASKET

1 1 0 26H-21875-00-00 Yamaha - CAP

1 1 0 5UM-21860-E0-00 Yamaha - TANK ASSY

Total cost of parts is about $45.00 and you will need to supply some hose for plumbing the tank. The setup is a bit more expensive than some others but installed it looks rather "factory" and works perfectly. I wish the tank was a bit larger as I can fill it to overflowing in the tough stuff but it's way better than not having it at all.

http://www.flickr.co.../in/photostream

That looks very good.

How is it attached to the frame?

This is what you need http://www.rlrproducts.com/

I have this one no buying seperate parts and jerry rigging it together mount the can hook the hoses up and go.And this is $30

Looks good.

I like this setup better than the RLR option. Looks to be twice the capacity and easy to get at and top up. If I remember correctly the RLR is just a model airplane fuel tank.

Thanks for passing the info on.

Looks good.

I like this setup better than the RLR option. Looks to be twice the capacity and easy to get at and top up. If I remember correctly the RLR is just a model airplane fuel tank.

Thanks for passing the info on.

You can just zip tie it to frame,pretty slick set up.I guess if you could get the bottle like you said airplane fuel tank you could do it.

I got the RLR also, it was only $30 complete but it's a total pita to fill. I wish I had seen this option exIT posted because I'd have done that instead. I also upgraded my water pump and don't seem to have any issues (no fan).

This cost about $1.50 and works just about as well as anything. It's out of the way, easily movable, and very well protected.

Sorry I don't have a pic of it clean. $ .99 turkey baster. Wifey brought it home from the kitchen store at the local mall.

IMAG0006.jpg

This is what you need http://www.rlrproducts.com/

I just got mine in the other day. Ordered it the middle of May but that's another story. Anyway, looking at the pics they show placement, it seems I need to do some trimming on the airbox to get it stuffed in there. Anyone else run into this? I didn't feel like fooling with it the other day in the 90+ heat so I havn't looked at it very hard. Hopefully it will slip in with no mods.

http://www.rlrproducts.com/images/fill2.JPG

Edited by michigan400

I just got mine in the other day. Ordered it the middle of May but that's another story. Anyway, looking at the pics they show placement, it seems I need to do some trimming on the airbox to get it stuffed in there. Anyone else run into this? I didn't feel like fooling with it the other day in the 90+ heat so I havn't looked at it very hard. Hopefully it will slip in with no mods.

http://www.rlrproduc...mages/fill2.JPG

I have an 08 450 i think its a different airbox than yours.

IMAG0006.jpg

How'd you route the hoses?

How'd you route the hoses?

Sorry for the late response. I've been off the grid, and on vacation for about ten days. Anyway, I ran the line from the top of the left radiator (vent line) to the bottom of the baster. Then ran a line out the top. This line runs down the frame, under the tank, and exits in the swingarm along side the carb vent tubes. This line can go anywhere you want....it's actually kind of irrelevant. I have filled the baster almost completely up, but have never sent any coolant out the top...and I've tried. :devil:

Here is a little better pic:

IMG_5151.jpg

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