The 'E' Type Forum

I don’t know the answer to configuring between coil and ECU. Mine was already in coil mode, and seemed to work ok with that. Here are the settings I used (S2 FHC). I’m not sure if they’re right or not. Adjusting the settings even a small amount has a bigger affect on the performance figures than one...

The bung is 1/2” UNF, so the hole in the block will be 1/2” UNF.

So the adapter will need to be male 1/2” UNF to whatever suits the available pressure switch.

Or use a 1/2” UNF pressure switch.

UNF isn’t the same as Whitworth or BSPP. UNF uses a 60 degree thread form, whilst Whitworth is 55 degrees. BSPP uses a Whitworth thread form. 1/4 BSPP is 19tpi. 1/2” UNF is the closest dimensionally, but is 20tpi. So over a short length they may appear compatible, but they’re not. Edit: The plugs ar...

I assume the car is on SUs, and the float levels are set correctly.

A few things come to mind in addition to what’s already been suggested. Are the floats able to drop fully? Are the float levers able to drop fully? Are the needle valves the correct size? Worth checking the above as it’s straightforward. Although if you’re seeing zero pressure on the gauge with the ...

Remember on the saloon cars, the engine is angled backwards, and on the E-type it sits almost level. As the dipstick is at the back of the block, the angle the engine is at affects the reading. The sumps are also very different shapes, the volume being evenly distributed on the E, and at the back on...

It depends how easily the UJ moves on the splines. When I dismantled mine, it slid off without needing force.

I’d avoid using a hammer on the series 2 steering column and joints. The series 2 column is collapsible, and if you’re too brutal with the hammer, you could shear the nylon pins. The steering columns aren’t available any more, and they shouldn’t be repaired after they’ve been collapsed. But yes, if ...

First gear is very low.

I don’t know if the 123 vacuum sensor is a simple switch or a proper MAP sensor. One hopes it’s a proper MAP sensor, and the fact you can programme different values to different pressures suggests it is. Does the app show a varying vacuum value as you rev the engine? There are several factors that d...

That’s disappointing. How are you determining them to be no good? The car didn’t perform as expected or you didn’t get the advance number you expected at a given RPM? If I’m following this correctly (I might not be) at 3000 rpm you have 24degrees of mechanical advance, and possibly up to 18 degrees ...

The switchable distributors with the 16 pre programmed curves are sold as manufacturer/model specific. Whether one of the 16 curves is suitable is another discussion. I was referring to the 123tune and 123tune plus (Bluetooth) which aren’t manufacturer/model specific, besides the physical mounting, ...

I don’t think the Bluetooth 123 purports to come pre-programmed with a curve specific to a Jaguar. It’s not even specifically a Jaguar distributor, as it fits many 6 cylinder cars that used the Lucas 22D6. I think it’s expected that you adjust the curve to suit your particular application.

Hi Steve. Yes, I’m referring to the distributors with the 16 switchable curves.

On the programmable versions, presumably you can just draw a curve without it if you didn’t want it.

Additional to the above. The pre programmed 123 has a gearshift vacuum advance cut off, so at vacuum beyond a certain point (low pressure) the vacuum advance is actually removed. And on cars with ported vacuum advance, when the throttle is closed, the vacuum port is no longer exposed to the manifold...

Yes, your assumption on the conditions for maximum and minimum vacuum are basically correct. Maximum vacuum under conditions of maximum engine braking, and minimum vacuum under conditions of maximum load. Any conditions where the engine speed is throttled by the throttle butterflies will see some va...

Christopher typed his reply as I’ve been writing this, so apologies for duplication. KPa is an absolute measurement. Atmospheric pressure at sea level is about 101KPa. Figures below that represent vacuum, i.e below atmospheric pressure. The figures you list show no change until 87KPa adding a maximu...

Tom, now I am confused about your statement about static setting. The instructions say to set the static at 10 BTDC. The screen advance degrees are crankshaft degrees. Therefore for example you program 0 degrees at the beginning and if you want a max of 30 degree, you input 20 degrees as the max. A...

The numbers for the vacuum curve are on the left hand side of the workshop manual photo. You need to convert from inches of mercury to KPa for the pressure values. The corresponding values for advance in the workshop manual are distributor degrees, so they’ll need doubling to get the values for cran...

Merry Christmas everyone!