Morris Minor Owners Club

Here is a link to the instructions for making the stabiliser yourself for any one who is interested.
http://www.britishv8.org/articles/MGB-v ... ilizer.htm

... and if you'd like to make it a little better , you could add a coupe of capacitors in the input and output stages so..
with no need for the LED and resistor...




John ;-)

Wouldn’t you need a 7910 if it is positive earth?

You are quite right there , is this car a positive earth? 1963...should be?

FosterS , is it?

Does it have a dynamo or an alternator ?

Thanks
John

Sleeper wrote: ↑Fri Jul 23, 2021 7:48 am You are quite right there , is this car a positive earth? 1963...should be?

FosterS , is it?

Does it have a dynamo or an alternator ?

Thanks
John

Negative earth as its running an altenator.

After I've checked every thing thats been said I have contacted the supplier of the gauge and sender and they are sending me a new sender, I've also ordered a stabiliser off ebay (it's due in a few days) I'll let you know what happens.

Sleeper wrote: ↑Thu Jul 22, 2021 7:46 pm ... and if you'd like to make it a little better , you could add a coupe of capacitors in the input and output stages so..

vreg10.jpg

with no need for the LED and resistor...

John ;-)

Thats just to much for my brain to sort out, I'm just a humble mechanic.

Hi,

This all looks very familiar to me! I fitted the same Smiths water temp gauge to my 1963 car (negative earth) , and also ordered a 10v stabiliser. To start with, all worked well, the temperature gauge reading just under 90 degrees for almost all types of driving - needle at the green arrow on the photo. Then a few months later I was driving and the temp gauge was moving up to the yellow arrow. I was very concerned that I had an over heating issue. I put the manual over-ride switch on for my electric radiator fan, but every now and again the temp would go back to 'normal' but then it would go back up again. The needle on the gauge did not flick between normal and high, it would move slowly between the two. I was quite worried - but I was not losing any coolant and there was no change in engine noise or performance.
I then read this thread on the forum - the mentioning of a bad earth made me think - so I had a look at my voltage stabiliser and noticed the screw holding it on/earthing it was a bit loose - so I tightened it. Ever since, the temp gauge has been indicating the normal temp!
I hope this helps!

Good Man...

but you should have that hidden behind your speedo or at least behind the dash...

John ;-)

Sleeper wrote: ↑Fri Jul 23, 2021 1:46 pm Good Man...

but you should have that hidden behind your speedo or at least behind the dash...

John ;-)

Guilty as charged!

I have fixed the problem, here’s what I did.

I got the new sender unit from the company I got the gauge from and fitted it, it was a bit better the gauge was now reading 90ish deg, the stabilizer was putting out 10.9 v so as I had ordered a new electronic on and with that fitted and putting out 9.8 v the gauge is reading 70-75 deg C (I have a 72 deg thermostat fitted) so that is exactly the reading I would expect.
Thank every one for your input much appreciated.