[TR] Add coolant overflow catch to TR3A

[bill beecher]

Ditto, about a 1/4” of coolant visible in the neck, no problems.  
Bill B
TS30800L

“Last night I saw upon the stair,
A little man who wasn't there,
He wasn't there again today
Oh, how I wish he'd go away”.... Mearns

On Feb 14, 2022, at 9:56 AM, Dave MacKay <dave at mdmackay.ca> wrote:


 
 
The TR3A owners manual (Practical hints …) says to “keep the neck of the filler at least half full of water”. I’ve been doing that and have always had coolant spilling out from the car.
 
If Randy is correct in saying that one should barely see coolant in the radiator neck when the TR3A is cold, I’ve been overfilling the radiator. Can I solve the overflow problem simply by keeping the rad less full? If so, how high should I fill the rad?
 
Or would I be better off fitting a TR4A overflow bottle? If so, where would be a good location? Here’s what I’d been thinking of: https://mossmotors.com/catalogsearch/result/?cat=8823&q=overflow
 
Thanks,
 
Dave MacKay
 
>From: Randy and Valerie DeRuiter <deruiterville at hotmail.com> 
>Subject: Re: [TR] Add coolant overflow catch to TR3A
> 
>I'm not sure you have room as I haven't done it on a TR3A, but a coolant bottle and bracket from a TR4A-6 might fit which would put it below the horns.  On my TR4, I added an expansion tank from an MGB like the picture attached which >remained pressurized with the system and worked well.  That tank can be added pretty much anywhere you have room.
> 
>That said, are you sure you need an overflow bottle?  The 3A radiator neck has a lot of expansion space in it - and normally that is what keeps all the coolant in place - are you possibly overfilling your radiator?  When cold you should barely >see coolant in the radiator neck.  
> 
>Randy
> 
>> I’d like to add a coolant overflow bottle to my TR3A (s/n 68639L). I’m trying to determine a good spot for the coolant overflow bottle. The spot I like best is already taken up by the horns.
>> 
>> What Have others done? Pictures would be very helpful.
>> 
>> Thanks in advance,
 
 
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