[DeTomaso] Radiators

[Ken Green]

The overall width at the top is 30 1/4 inches.  The bottom sides are tapered.  It's a very tight fit.

Ken




--- On Mon, 6/16/08, JDeRyke at aol.com <JDeRyke at aol.com> wrote:

> From: JDeRyke at aol.com <JDeRyke at aol.com>
> Subject: Re: [DeTomaso] Radiators
> To: kenn_green at yahoo.com, detomaso at realbig.com
> Date: Monday, June 16, 2008, 12:53 PM
> MD's Ron Davis racing radiator-
> Single pass (aluminum)
> 4 core (comes out to 6 inches thick)
> 30-1/4 inches wide at the widest point (the bottom side are
> tapered some)
> 16 inches tall
> 
> Ken, did you mean the overall width was 30" or only
> the 4-tube core? Pantera 
> radiators are around 29-1/2" wide overall with the
> core at 26 or so inches 
> wide. 
> 
> For reference to all who can't afford to experiment, a
> stock copper/brass 
> Pantera radiator is 26" wide x 15" high by
> 2-1/2" thick, with a tank 1-3/4" wide 
> on each side and is a dual-pass crossflow style radiator-
> or two separate 
> designs, one of which didn't work. My 2nd design
> stocker weighed 40 lbs but may 
> have had scale built up inside after 15 yrs of use. 
> 
> A Fluidyne aluminum is also 26" wide x 15" high
> but is 3-1/2" thick, with two 
> side tanks each 1-3/4" wide, and is a dual-pass
> crossflow. It weighs 22 lbs 
> without the fan shroud or shroud extension. It is a
> dual-pass 4-tube style.
> 
> A '90s Corvette/Z-28 radiator is a 12-lb single pass
> crossflow one-tube 
> aluminum radiator 25-1/2" wide x 18" tall,
> swedged into two 2-1/2" wide plastic 
> tanks. GM gets away with one tube by making the inside of
> the tube bumpy (Modine 
> Radiators calls it a 'tubulator core'), thus vastly
> increasing the turbulence 
> of the water and increasing its heat transfer. I've
> often thought of taking 
> two of these good cores and welding them into aluminum
> tanks for a custom setup, 
> but my Fluidyne works so well to 150 mph, I haven't
> bothered. The plastic GM 
> tanks often crack from overheating and cannot be repaired
> so don't bother to 
> try adapting stockers to a Pantera. At very low speeds
> around town with the 
> front-mounted A/C on, I've seen 250 F in our stock
> Z-28. The single electric fan 
> isn't even designed to come on until around 225F!
> 
> Some say that dual-pass radiators increase the restriction
> to flow since 
> water is forced across the core twice, while a single pass
> radiator means that 
> water is only forced across (or down) once, thus using less
> power or adding less 
> flow restriction. Generally, water that stays in a radiator
> longer transfers 
> more heat but the amount of temp loss from two passes is
> not proportional- you 
> don't get twice the cooling. The actual flow
> restriction is a function of how 
> big the tubes are and how many you pack into the space
> available. In our usual 
> balancing act, more tubes means more water flow but less
> air flow through the 
> core. More bigger tubes helps but there's a size limit.
> 
> Hall was an innovater! The Phoenix radiator was std
> dimensions but thicker 
> 7-core brass radiator that weighed at least 50 lbs-
> essentially two cores 
> soldered in the same tanks, and held up to a light bulb by
> a strong man, no light 
> could be seen, so how much air actually made it thru is
> problematic. Hall 
> himself said they didn't work like he expected and he
> soon stopped selling them- 
> apparently except to MD. Hall also built a few wild
> slanted-core radiators in 
> which air from the grille flowed straight thru in spite of
> the radiator being 
> radically slanted. This design allowed a little more
> frontal surface area, too. 
> Never heard of any owner results on these. FWIW- J DeRyke
> 
> 
> **************
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> prices getting you down? Search AOL Autos for
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>       
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