Morris Minor Owners Club

Hi

My Friends , anyone know what is the value of this Ressitor (blue colour )please see the pic .

Regards
Sandun

I don't know but you could try asking SU directly - info@burlen.co.uk

They may need some more details about the item number etc. but it is worth a try. I have always found them very helpful.

Sandun
Whilst there is no harm in asking Burlen Fuels reference the resister you may not get an answer to your question.
I would suggest that the fuel pump is an after market item - looking on the Burlen web site I cannot find a resister listed though it may be well buried somewhere in there.
SU electrical pumps normally do not have a resister fitted.
If you get any problems come back to me - Burlen Fuels are local to me and I can pop in and ask them about the resister.
Phil

Deleted duplicate post.

That looks like a disk capacitor to me.

It is probably for spark suppression on the points.

Don

Sandun
I have found the repair kit with the blue diode-resister included. See link below for details:-

http://sucarb.co.uk/su-fuel-pumps-spare ... -1985.html

The diode/resister has been fitted to reduce the spark erosion of the contact points.

See the link below for details:-

http://sucarb.co.uk/technical-electrica ... onnections

Phil

When a I rebuilt a pump a long while back I used a P6KE18A Fairchild Semiconductor Diode (Transient Voltage Suppressors Axial Unidirectional 600W) across the points.

Check out:

• this link - scroll to 'NOTES ABOUT CONTACT LIFE'; and
• rebuild video

I agree with Don , looks like a ceramic disc capacitor . It should have a value printed on the underside , which you could see by gently pulling it off the points . Looking at the size of it possibly 0.047 or 0.022 microfarad ( a guess ) together with an indication of maximum working voltage . Looking on ebay the blue capacitors seem to be 1 KV working voltage .

Andrew .

It does look like a disc ceramic capacitor but it is a Metal Oxide Varistor, 18V DC should do the job. It is a resistor that changes value with voltage, high resistance below 18V and low resistance above 18V so would be like a short circuit to the back EMF when the points open helping prevent arcing. They come in various voltages and work on AC or DC, the voltage being different for both because of the peak to peak of AC.
They do 14V ones but the vehicle voltage is higher than that when the car is running, that is why I recommend 18V. A suitable one would be marked S14K14 the S14 denotes the diameter of 14mm and K14 denotes 14V AC/18V DC, you could also use S10K14 the 10mm version.
Your photo comes from an article in MGB Stuff that also show a photo of a S14K385 Varistor which would be of no use, it has to be S14K14 or S10K14.
The original capacitor value fitted to the pump was 0.047uf at 400V, so you could use a 0.047uf at 1kv disc ceramic capacitor if that is easier for you get. A disc ceramic of this value and voltage will have a diameter of around 20mm and 5mm depth.
Regards John