[Mgs] Rubber-bumper B cooling system

[Dan DiBiase]

On the '77 - '80 cars, the radiator was moved farther forward (I think to
allow room for the V8 engine) so the mechanical fan would no longer have
been any use. So they put the electric fan in (also, I assume because of
all of the emissions stuff, especially the catalytic converter, underbonnet
temps may have been higher). On my '76, when I need to reduce the level of
coolant, I disconnect the lower radiator hose. It's messy but fairly quick
and not too difficult. But yet, a lower petcock would have been nice.

Dan D
Central NJ USA
http://dandibiase.cbintouch.com/


On Sat, Feb 8, 2020 at 12:51 PM S.Carr via Mgs <mgs at autox.team.net> wrote:

> A friend who runs a small shop is working on a 1980 MGB—the first
> rubber-bumper B he’s encountered.  Neither he nor anyone else who looks at
> the car can understand why the cooling system was designed with no opening
> (cap) at the highest point to let fluid in or—more importantly—to let air
> out of the system, and with no tap at the bottom to drain the coolant.
>
>
>
> Anyone experienced in dealing with this cooling system have any
> suggestions?  He’s thinking of inserting a piece of tubing with a filler
> cap into the upper radiator hose to speed up system refill and get the air
> out of the head—he suspects this is why the owner had overheating problems.
>
>
>
> My ’71 B/GT is in the shop next to this ’80, and we wonder why the later
> car had the radiator/oil cooler positions reversed and a dual electric fan
> fitted.  The previous layout would seem to offer better cooling, and my car
> never had any overheating problems.
>
>
>
> I wouldn’t dare repeat his comments on the job of bleeding the clutch
> system.  He’s an old-time racing mechanic and believes that parts ought to
> be ACCESSIBLE.  We are convinced that British car designers were getting
> revenge for England’s having lost the Revolutionary War….
>
>
>
> Thank in advance,
>
> Sarah Carr
>
> ’71 B/GT in PA
>
>
>
>
>
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> Windows 10
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