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Uprating the 15/50
November 1, 2019
4:58 pm
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Steve Grimes
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October 31, 2019
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I’m new to Wolseley and have just bought a 15/50. On the Honest John website they say that the engine performance can be improved but does not say how.
Do I assume that is just by adding twin carbs and if so, can you advise where to source this. I’ve noted to improve the brakes, the best way is to add a servo. Does anybody have any other advise so the car can be driven in modern traffic.
I was going to buy a Morris traveller where there are so many upgrades, but after sitting in the 15/50 the Moggie felt like under rated car compared to the 15/50.
Does anybody add indicators to their cars ??
Many thanks
Steve.

November 1, 2019
7:10 pm
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Graham Button
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The best and easiest way to increase performance is to fit the twin carbs and bigger valve cylinder head from a Magnette or Riley 4/68 which is what I have done to my 15/60. Its also worth fitting a multi layer stainless steel gasket at the same time, more expensive but worth it, the MGB racers use them and it stops the gasket blowing between cylinders 2 and 3. If your car has the BMC banjo rear axle a taller diff is a good idea as well, the 15/50’s wheel size is 15″ so a 16/60 4.3/1 diff unit is ideal, it bolts straight in with only the need to use the original diff wheels to effect the swap as the 15/50 halfshafts have fewer splines. These modifications will give a usefull increase in power and cruising speed without increasing fuel consumption or leaving the car breathless on hills. All of these changes can easily be reversed if required.
Graham.

November 1, 2019
7:45 pm
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Steve

In addition to Graham’s suggestions above, I would suggest that the addition of indicators, although always a point for debate, is a sensible option if you are going to use the car regularly and on main roads. Modern drivers just don’t see trafficators any more. However, it is best to avoid doing any irreversible changes, such as drilling holes into the wings, as this can affect any eventual sales price. I think there are companies now that sell indicator bulbs that will fit into existing light units. Definitely worth investigation?

Regarding brakes, remember that a servo on its own, does not improve the efficiency of the brakes. It just reduces the effort required at the pedal. The standard brakes should be adequate really, unless you wish to drive the car in a more ‘spirited’ manner. I don’t know what size the 15/50 brakes are, but the Wolseley 1500 brakes can be uprated with the larger Riley 1.5 brakes.

Bob

November 29, 2019
11:26 am
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Steve Grimes
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October 31, 2019
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Thank you for the wise words which I will follow up.
With reference to the differential on my car, I’ve been asked to identify which diff I have to work out if it can be upgraded or not.
The chassis number is TAAB1S8404 registered 08.08.57. Is there anyway I can check if this differential can be upgraded ?

I’ve bought the lighting system and will get this installed.

Just need to get the twin carbs now so I can see off the Subaru’s at my local town !!!

Steve.

November 29, 2019
3:26 pm
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Graham Button
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If the axle is the banjo type there will be a ring of studs and nuts at the front of the case holding the diff in position, with the propshaft disconnected and the halfshafts removed after these nuts are removed the diff will come out from the axle case forwards.
The chassis number you have quoted appears to be incorrect if you have taken it from the V5c check the I.D. plate under the bonnet.
Graham.

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