[Healeys] Yet another mystery

[Michael Salter]

I would also suggest that you take a careful look at the baffles that are, or should be, installed forward from the sides of the radiator to the grille. If these baffles aren't correctly fitted hot air from the backside of the radiator will swirl around to the front and pass through the radiator again and thus seriously deminish its cooling ability.

M


________________________________
From: Healeys <healeys-bounces at autox.team.net> on behalf of Harold Manifold <manifold at telus.net>
Sent: Thursday, October 2, 2025 6:45:19 PM
To: Richard Antal <rantal243 at yahoo.com>
Cc: Healeys <healeys at autox.team.net>
Subject: Re: [Healeys] Yet another mystery

Rich,

Your comments "high speed. run of twenty miles" and "extra series of cooling tubes" may offer some clues. Fan blades flex away from the side that pushes air, in other words towards the radiator. The extra cooling tubes may have reduced the clearance between the radiator and the fan. There isn't much clearance to begin with. The combination of the two may have been enough for the fan to hit the radiator.

The other issue is what caused the overheating. At high speeds the fan has little to no effect on cooling. Unless the ambient temperature was very high and you were going up a steep hill the colling system should keep up. What was the water temperature gauge saying?

Harold



On Thu, Oct 2, 2025 at 1:39 PM Richard Antal via Healeys <healeys at autox.team.net<mailto:healeys at autox.team.net>> wrote:
Listers,
    My BJ8 seems beleaguered with misfortune. A couple of weeks ago I noted the oil pressure gauge wildly oscillating at various speeds. It vanished two days later.
    Yesterday a high speed. run of twenty miles produce an overheating radiator with fluid spewing from the overflow tube. To my horror, I saw that the Texas cooler fan which I'd had for at least 25 years had confronted the engine side of the radiator leaving a distinct circular impression and abrasion to the tip of one of the fan blades. That radiator was rebuilt two years ago with an extra series of cooling tubes and had given no problems for at least 5000 miles. I assumed the harness which prevents the engine from sliding forward was faulty. Inspection of the underside did not support that conclusion--it looked fine to me: all bushings and nuts were in place. I ran the engine after filling the radiator and saw no evidence of recurrence of the fan nudging the radiator. I'm perplexed what to do next. Thanks for your thoughts......
Rich Antal
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Suggested annual donation  $12.75

Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive/healeys

Healeys at autox.team.net<mailto:Healeys at autox.team.net>
http://autox.team.net/mailman/listinfo/healeys

Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/manifold@telus.net

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20251003/4bbdde22/attachment.htm>