Raditor question

[revival]

Which rad would give better cooling?
Dtek or this onedual heater core

I have a swiftech pump (mcp 600)

WOuld the diff would a lot or little?

What is the differnce between single pass and multi pass?

[Blackeagle]

A single pass rad when compared to a dual pass rad of the same size and number of tubes has only about 70% of the resistence of the dual pass core.

And a single pass like the core from a 69-72 pick up with air would be even better than that 70% figure when compared to the rad in the link you provided. The single pass is a bit wider, more tubes, so lower resistence for that reason also.

The single pass advantages are well worth having.

[revival]

With teh heater database down, How do I find out if a heater core is single pass?

[BillA]

Blackeagle
anyone made a list of only single pass rads ?

I know of only 2, just encountered the 2-235

[Blackeagle]

Originally Posted by unregistered

Blackeagle
anyone made a list of only single pass rads ?

I know of only 2, just encountered the 2-235

I really don't know if anyone has, but I have a stored copy of the old Fedco site from which I should be able to do so.

Will check on this and post back latter.

[Blackeagle]

Bill,

The mirror I downloaded is, I'm sorry to say, not complete. But I'll list all I've found.

2-149, 2-209, 2-210, 2-216, 2-217, 2-275, 2-285, 2-317, 2-617

I listed these as I don't know your intended usage Bill, but all of these have what I'd consider a flaw for water cooling use. The inlet & outlet are on the same side of the core. Would I'd think have the effect of not having flow balanced between all the tubes. Second they all have the inlet/outlet on the ends or edges, not the "face" of the core.

2-549, 2-553, 2-611

All have inlet's and outlets on opposed corners. But none have the inlet/outlet on the "face" of the rad, all are on ends or sides. All three are about the size of a Chevette core.

Perhaps 2-342 is a one of a kind? I could not referance the one you've seen as it's missing form the file I downloaded, how is it configured?

I hope this is of some help to you, and I wish it were complete.

I do recall that when I was first looking around a year or so ago for what I would use, 2-342 was the largest single pass with inlet/outlet on the face of the core and with them at opposed corners. Some 2-342 rad are made of all copper instead of mostly brass. A guy at Xtreme Systems was lucky enough to get one like that. Wish I had that sort of luck!

Good luck with what ever you're at work on.

[revival]

So is there a way to look at a core and just tell what it is?


WC NOOB here , but those part numbers are for what site?

[BillA]

inlet & outlet same side = dual pass (4 pass if a BI original !!!)
inlet & outlet opposite sides (best opposite corners) = single pass

[revival]

Originally Posted by unregistered

inlet & outlet same side = dual pass (4 pass if a BI original !!!)
inlet & outlet opposite sides (best opposite corners) = single pass

SO this ONE is dual pass.

And this ONE i ssingle?? Did I get this right?

What kind or performance diff is there between the two?

[BillA]

yup
the hc will be better than the 676, but bigger also (why is better, eh ?)

[pHaestus]

Do you know what make/model/year car the 2-342 comes from?

[BillA]

Originally Posted by pHaestus

Do you know what make/model/year car the 2-342 comes from?

Chevy C10, 20, 30 with AC, '69-'72 $17.99 Auto Zone (website)
does seem to be unique, and uniquely cheap too

[Blackeagle]

Originally Posted by unregistered

inlet & outlet same side = dual pass (4 pass if a BI original !!!)
inlet & outlet opposite sides (best opposite corners) = single pass

I should have been more clear. All those listed in the first group are single pass rads. Inlet/outlet at opposite ends (tanks) of the rad, but also on the same side of the rad, instead of being at diagonal corners.

Can you share what your setting up Bill?