[Healeys] Heater query

[John Spaur]

When I restored my BT7 I put in a high efficiency core, for rows I believe. Nothing was difficult. The top and bottom will accept the core and almost any competent radiator shop can do the work.

 

One caveat, I had to flatten the inside of the rail and bend it to accept the wider core. Again, that was not difficult. It is hard to see the modification.

 

John

62’ BT7

 

From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Harold Manifold
Sent: Tuesday, July 11, 2023 9:40 AM
To: warthodson at aol.com
Cc: healeys at autox.team.net
Subject: Re: [Healeys] Heater query

 

Gary,

 

I had the same options when restoring my Mk1 BT7. I looked into aluminum radiators extensively to see what the benefits might be. Contrary to popular belief it is not better heat transfer properties of the materials. The copper radiator fins on the original Healey radiators have much better thermal conductivity than aluminum. The advantage of the aluminum radiator is the manufacturing process and the formability of modern aluminum. The result is more tube and fin area. I estimated a Wizard radiator has about 25% more fin area than the stock radiator. The greater the fin area the better to expel heat.

 

Having said that, there is a third option which is to replace the original core with a high efficiency core. This retains the stock look of the engine bay and will be close in performance to the aluminum radiator. The high efficiency core option will be more expensive than a Wizard radiator and the difficulty is finding a radiator shop that can access the core can do the work.

 

This website has a good overview: https://usradiator.com/cores

 

Harold

 

 

 

 

 

On Tue, Jul 11, 2023 at 9:12 AM warthodson--- via Healeys <healeys at autox.team.net <mailto:healeys at autoxteam.net> > wrote:

My 100 radiator is in need of some rehabilitation. It either needs to be boiled out, which would not replace some of the damaged fins, or re-cored. I am leaning toward re-coring but that would be more expensive, which leads to the aluminum option.  

Besides price what are the pros vs. cons of these options? Does anyone know if re-cored 100 radiator is more efficient than an aluminum radiator?

Gary H

 

On Monday, July 10, 2023 at 09:02:21 PM CDT, BJ8Healeys via Healeys <healeys at autox.team.net <mailto:healeys at autox.team.net> > wrote: 

 

 

I live in the sunny South (90° F and 90% relative humidity today) and I used to refer to my BJ8’s heater as the “auxiliary engine cooler”; but I no longer have to use  it that way since I had a modern core installed in the radiator and added a 190° sleeved thermostat that I bought from Kees.

 

Steve Byers

HBJ8L/36666

BJ8 Registry

AHCA Delegate at Large

Havelock, NC  USA

 

 

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