[TR] Add coolant overflow catch to TR3A

[Dave MacKay]

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,
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/triumphs/attachments/20220214/f2ac6ce8/attachment.htm>