[Healeys] alum radiator swap

Sun Jul 14 21:00:27 MDT 2019

70 MPH?   Hmmmmm.   After a drive the other day, I started doing some work
on the engine and I was standing next to my front fender - that has rally
vents --and felt a lot of hot air coming out of the vent.   I have an
electric fan and it had come on at the end of my drive as the temperature
started to climb above 190 degrees.   And, the hood (bonnet) was in the
raised position.

On Sun, Jun 2, 2019 at 8:08 AM josef-eckert at t-online.de <
josef-eckert at t-online.de> wrote:

> My opinion.
>
> Side  vents help at speeds above app. 70 miles/h for race cars.
>
> Louvers are just a gimmick. help nothing, only cause trouble in rain
> (mainly when car is parked somewhere).
>
>
>
> Josef Eckert
>
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> -----Original-Nachricht-----
>
> Betreff: Re: [Healeys] alum radiator swap
>
> Datum: 2019-06-02T16:16:51+0200
>
> Von: "Bob Spidell" <bspidell at comcast.net>
>
> An: "healeys at autox.team.net" <healeys at autox.team.net>
>
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>
> While we're (sort of) on topic, what is the List wisdom on the efficacy of
> fitting side vents to the front wings (a la rally cars)?  Since,
> supposedly, a big part of the issue with Healeys overheating is
> insufficient airflow through the engine bay, I'd expect them to help quite
> a bit.  Or, or they 'useless' as well, since the main overheating issue is
> stopped at idle?
>
> Not sure if the louvers on my 100M help.  It still gets a bit warm stopped
> at idle, but not as much as my BJ8 (but I haven't driven the M as much,
> smaller engine, etc.).
>
> Bob
> On 6/2/2019 1:19 AM, Kees Oudesluijs wrote:
>
> Yes and no.
>
> An old car should be fit for any normal drive, be it regularly or
> occasionally, at leisure or in modern heavy traffic. This means that many
> classic cars will need some assistance with the cooling, i.e. an electric
> fan, either manually or thermostatically controlled.
>
> An aluminium radiator is indeed a gimmick and does not add anything at
> all. It will probably wear out faster due to corrosion. It is just cheap to
> manufacture and does not improve the cooling efficiency.
>
> What improves cooling efficiency is increasing the running temperature of
> the engine by fitting a hotter thermostat thus creating a larger delta T,
> fitting a more efficient water pump to increase the coolant flow, enlarging
> the total surface area of the radiator, i.e. more rows (up to a point),
> larger matrix or increase the air flow through the radiator, i.e. improved
> cowling, more blades to the fixed fan, higher engine idling speed but most
> of all a thermostatically controlled fan in combination with a carefully
> chosen thermostat and thermoswitch.
>
> Kees Oudesluijs
>
>
>
>
> Op 2-6-2019 om 08:53 schreef josef-eckert at t-online.de:
>
> When you use genuine parts to replace faulty ones and when you keep the
> car propperly maintained  and when you use the old car only occasionally
> for fun drives just to enjoy driving it, there is no problem with an old
> car.
>
> PS: Aluminium radiator is something nobody needs in a classic car as it
> improves nothing. Just a useless gimmick.
>
>
>
> Josef Eckert
>
> Königswinter/Germany
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> -----Original-Nachricht-----
>
> Betreff: [Healeys] alum radiator swap
>
> Datum: 2019-06-02T00:21:42+0200
>
> Von: "i erbs" <eyera3000 at gmail.com> <eyera3000 at gmail.com>
>
> An: "Ahealey help" <healeys at autox.team.net> <healeys at autox.team.net>
>
>
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>
> Aluminum radiator swap update:
> Got my old oem unit out. Removed my nice newish metal flex fan. spliced
> wires onto the electric fan for easy connect/disconnect and then went to
> double-check the new radiator will work after and initial trial fit. What I
> found: OEM radiator is 1/2" wider and the aluminum radiator does not have
> tapped holes, so nuts will be needed to attach to my car. I am outside of
> the return window.
> So it looks like I will be getting my OEM Radiator flow tested and tanked.
> Will reinstall my flex fan
> refill with coolant/water
> have installed a new sleeved thermostat to replace the non-sleeved unit.
> I can make some shims for the new radiator, but cutting threads in the
> holes will most likely result in the holes being to big for the bolts.
> Fun with old cars
> Registered for a car show on June 8th....
> Ira Erbs
> Portland,OR
>       _______                                  _______
>      (______ \____1959 BN4____/ _______)
>          (_________________________)
>           BT7 engine and disk brakes
>
>
> 1967 MGB  [image: MG]
>
> A racing car is an animal with a thousand adjustments. Mario Andretti
> Please excuse random auto corrects and misspelled words
>
>  
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