This thread contains measurements and other information about radiators that may be suitable for liquid cooled scooter projects. If you have measurements, pics, pipe function, links to LC conversion threads on 49ccScoot, or other info to add please PM me with it or a link to where you've posted it.
Please use the information is a quick reference, but check for yourself to be certain of any sizes if space is critical.
Not counting brackets, most of the radiators are under 2" thick, but go over 2" around the cap.
Hose routing and sizes for the YZ125 radiator pair.
1 = 16mm : Inlet/Hot (From cylinder head) 2 = 14mm : Connects to 3 3 = 14mm : Connects to 2 4 = 8mm : Expansion/Overflow (To expansion tank or hose routed toward ground) 5 = 14mm : Connects to 6 6 = 14mm : Connects to 5 7 = 18mm : Outlet/Cold (To water pump inlet)
You can get the anti-vibration mount setup from Yamaha parts dealers. You could probably also make something and then use universal rubber grommets. The Yamaha parts that I'd use would be 90387-06065-00 (collar) and 90480-15528-00 (grommet). I wouldn't pay Yamaha for their bolts or washers. I guess I'd need 4 of each of those, with shipping that's around $30. If made at home, probably less than half that cost but much more time.
When attaching radiators hoses, if no specifications can be found, generally hot is attached to the top of the radiator and cold to the bottom. Hot being from the engine/thermostat and cold being to the water pump. An easy way to remember the radiator top/bottom attachment is to remember that heat rises, so you want the hot side at the top. The water pump is in the cold side.
5/8" or 16mm hose works with most Minarelli engine setups and suitable radiators should be able to use 5/8" or 16mm hose.
Some systems don't use an overflow or expansion tank and simply route the hose from the overflow outlet to the ground. Using an expansion tank can avoid spilled coolant, which has various benefits. First, the coolant may be available to the system again if you don't lose it. Second, you shouldn't get coolant on the ground. It's generally more ecologically friendly to contain the coolant, it can be harmful to animals and has a sweet odor/taste that may attract them to it, and if routed improperly you could wet your tires or at least make a little mess of your scooter. It may also be safer to use an expansion tank to prevent air from getting into the system. Here's an example of an expansion tank, but there are many options.
Senna1Rossi: Thanks renagade281!
May 23, 2016 14:59:12 GMT -5
Fox: I don't really know how to say this but straight. I am Dave's Girlfriend Kellilee and bluntly and VERY SADLY he passed away early Tuesday morning. I know he would want ya all to know this. Thank You Brent for befriending my love he was very happy on here!
Jun 18, 2016 16:26:04 GMT -5
Fox: www.gofundme.com/29mgf6b8 I hope it is ok to pass on his gofundme page link. If not you will un-post it I'm sure. Thanks again all!!
Jun 18, 2016 16:31:18 GMT -5