Ebay Oddity

[FireHead]

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=43977&item=2482525200&rd=1

I don't know if that thing is cool or not.

[threewheelin-feelin]

well i didnt know the made a liquid cooled 81 tho 84 250r

[FireHead]

They didn't. This head turns it into one though. I would guess that you replace your air cooled head with that thing.

[CHAINSAW]

I thought someone on this site had a machine with this on it.... I could be wrong.

[FireHead]

Dunno. I am curious as to how it works. I would be guessing not very well, but I could be wrong.

[plkmonster2]

I wonder how it cycles the fluid? Do you need a pump, or does it work off the engines compression?

[Mobular]

Those conversions use the thermo-siphon principle. The hot water in the head will rise through the one hose to the rad, be cooled, and then return to the head via the return hose.

[plkmonster2]

Oh, so its convection. I wonder if that is effective enough though?? Some of the small r/c engines use a tad bit of engine vaccum to cycle the water... Its pretty cool.

[BigGreenMachine]

Didn't DG make a liquid cooled head for the 84r?

[Mobular]

Yes they did. They show up from time to time on eBay.

[Lots_Of_Nothing]

i've had that same head before, selvys company made it first, then a bunch of "copycats" started, i got it on ebay for like 30 bucks, threw it on my old 84 with a cr80 radiator, it helped a bit, but i ended up selling it on ebay for like $140 when i sold my 84R, if you do a search on the forums, you may find the topic i had on it, or maybe it got deleted because its so old, howdy probly remembers it, he helped me a bit with it.