Cleaning Heatercores, Pump selection, Flow Q's

[Maviryk]

Hey folks,

I spent $41.15 at Advance Auto Parts and they overnighted a pair of Fedco 2-199 1977 Pontiac Bonneville Heatercores to me.

They're a sight to behold. :) Anyone have a special way to rinse out heatercores? I'd rather not have anything get stuck in my jets.

I've got plans for my M-atx portable project. Any suggestions would be helpful.

I'm cooling a 1900xt, oc'ed Opteron 144. Using 2 Heatercores, a DDx18 GPU block, and a Swiftech Storm. That's a lot of flow restriction!

Planning on Y'ing off into the heatercores after the Storm, so that they don't restrict the flow anymore than they have to. They'll feed back into a custom reservior.

Right now I'm undecided on which pump to get. I'm thinking about the MCP350 modded to a 3/4" intake, but I've already got an MCP655 to use. I'd like to use the 350 due to space constraints.

[Deathknight]

Clean with white vinegar. Rinse with it several times, let it soak for a few hours, rinse with distilled water then repeat. In the end flush with distilled water several times to get all of the vinegar out.

[Moto7451]

I've never had a problem with stuff in new cores. Does flushing them actually remove any grime/particles?

[PunkRawk911]

Yes, flushung new Hc's is always a good idea.

[Spade]

it's known as "swarf" and it COULD theoretically be in even
new cores.

always a good idea to at least flush them once.
what's it going to hurt?

[citronym]

IMO flushing new (and recently aquired used) WC parts is just good habbit.

[striker85]

All that is in the heatercore is slag from welding or excess solder. Just blow some water through with a garden hose and shake it around a bit; that should do the trick.

[Spade]

lol. swarf = jaggies and metal fibre from cutting. also chemical chunks or oxidized chunks

slag = beads of solder / metal.

just felt like clearing that up :) (pun intended)