[Healeys] Radiator shovel

[WILLIAM B LAWRENCE]

I promised some photos of my modification and I apologize that it took so long to find these and also to relearn how to load them from iphoto. On the right is the assembly of the fans.They are attached to the radiator core behind the cross bracing. Note the added sheetmetal angle I used to land the tops of the cross braces and the slight bend from the bottoms of the braces that gave me an extra inch to work with. The shiny highlights toward the outsides of the fan shrouds are the aluminum blanking plates that close off the edges of the fans and direct all of the air through the core.

On the left is the finished assembly. The fans are thermostatically controlled to come on when the coolant temp reaches 195 F. They shut off when the temp drops to 185. They will maintain 195 or below when idling in 100 F ambient temps at 5000 feet of altitude. Probably better at lower altitudes due to higher air density.

I am running a stock dynamo with a gel cell battery and so far have not had a problem with power capacity. The fans are powered through a relay and each is fused separately. The controller has bypass wire that is normally attached to the AC system to power the fans while it is running. I wired that in as a manual switch leg, but have never used it.

I had worried that the fans and shrouds ahead of the radiator core would impede the flow of air while the car was moving. That doesn't seem to be the case as the fans rarely come on while the car is moving and then only when at lower speed and climbing. The fans always come on after a run when the engine goes back to idle and excess heat begins to soak out of the engine, but that its normal.

I also added a coolant recovery tank to keep the radiator full and that seems to be working.

In the process I eliminated the mechanical fan from the engine and installed narrower pullys/belt sourced from a 6 cylinder engine altogether these have reduced the power lost through the (mostly ineffective) cast alloy fan and reduced engine vibration.

Bill Lawrence
BN1 #554
________________________________
From: Healeys <healeys-bounces at autox.team.net> on behalf of Bruce Steele <healeybruce at roadrunner.com>
Sent: Wednesday, November 6, 2019 4:06 PM
To: 'Bob Spidell' <bspidell at comcast.net>; healeys at autox.team.net <healeys at autox.team.net>
Subject: Re: [Healeys] Radiator shovel

Hard to quantify, or even confirm, the impact of the oil cooler itself, but
I would say yes, a little.  Starting at about 10 degrees lower gives me more
headroom.  The added volume of oil allows for, I am assuming, a bit more
dissipation of heat as well.  That said, I still do all I can to avoid
freeway congestion when it is above 90; I prefer to use surface streets
where I can vary my route and at least have some recover between stoplights.
I also find that when stopped, running at about 1700-1800 rpm moves a lot
more air (I have a 6-blade tropical fan) which helps buy me more time.  Or I
avoid driving altogether under those conditions, as they are not much fun on
the driver either!

Bruce Steele
Brea, CA
1960 BN7


-----Original Message-----
From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Bob
Spidell
Sent: Tuesday, November 05, 2019 9:44 AM
To: healeys at autox.team.net
Subject: Re: [Healeys] Radiator shovel

Does the oil cooler help in So Cal stop-and-go (and stop again) traffic/red
lights?

On 11/5/2019 8:57 AM, Bruce Steele wrote:
> I bought mine from Chris Gallagher (studio at chrisgallagher.ca).  I also
> installed the Moss oil cooler kit.  Combined, I achieved about a 10
> degree drop in indicated temp, helpful in So Cal summers.
>
> Bruce Steele
> Brea, CA
> 1960 BN7
>

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