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Next time you get notice of impending pulsing have a voltmeter connected across the battery with the engine running and watch the v-readings. That might help with the diagnosis. By the way: An ANALOG voltmeter is better suited to observe rapid fluctuations. Vin

After that much input - who is going to do the statistics? A bar diagram or some such. Vin

75 + ½. Anyone to beat me? At the tender age of 15(?) I read about the projected turbine powered Rover. That got me hooked. Vin

Hi Christopher, are you saying the only options are: either a clumsy installation at the inlets or a good ear for the suction hiss? Vin

Splendid! I never thought of using the brake servo ports. Vin

Thanks Harvey. So I'll leave the electrics unconnected. And as an aside: When I scrapped my previous P6 more than 30 years ago, I installed said solenoid as a code controlled opener for my frontdoor. It is still operational. Vin

There they are.

Thanks KiwiRover, thanks Steven. With the underside port - which is the one currently connected to the dizzy - I tried to measure the vacuum. I've let a tranparent tube hang into a water container so as to measure the water column. But I gave up after 1 meter. The length of the tube did not...

Hi Kees, interesting contraption. But I can't really figure out how it works. And how are the nozzles connected to the inlets? Vin

Hi Vern. Can't send a picture just now as everything has been assembled. But I anticipate further fiddlings. Will make a picture then. Vin

Thank you, Harvey! Vin

Is there nobody to know the answer, or is my question phrased nebulously? Vin

2000TC with HS8-carbies. As I understand things the downstream side of the carbies should be connected to the vacuum advance. In my case the rear carby has its nipple at the bottom, the front carby on top. WHY? Currently only the rear is connected to the vacuum advance, the front nipple is...

My heater hoses are on the way out. To verify the part numbers for ordering new ones I'm trying to find an exploded view of the coolant/heating system. But can't find one. Help please. 2000TC Vin

But before delving into the subtleties of our little circuit one needs someone to do the hardware. Are you conversant with a soldering iron, Pat? Vin

A completely different tack would be the following: The temp-sensor for the temp-gauge is a variable resistor whose signal shows up as a variable voltage at the temp-gauge. You tap this voltage and feed it to a tiny circuit with an adjustable threshold to operate a relais for your fan...

And thank you for the SMCJ30A. Vin

A very good presentation. Congratulations! Vin

Ok, Phil, and mind you: I just wanted to niggle. I fully agree that one should be satisfied with the observed tolerances. Although for your Mark-2 model you might want to select a three terminal voltage reference instead. That is provided that the instrument mechanics itself responds linearly...

What I meant is: Measure the voltage from 'Meter +' to GND. This one should be constant at ca. 7.5V if the zener is not to blame. Vin

Before diving into the details of the circuit operation two queries come to my mind. 1) Is there any kind of overvoltage resp. reverse voltage protection upstream of the power connection? Those semiconductors are so unforgiving against voltage spikes. 2) Concerning the unlinearity in the...

But where is the circuit diagram? Vin

Yes, Rich, I understand all that. But what I meant to ask is: How would you judge that you have the right needles? Presuming your mixture is set properly for low power but you have pinking under heavy load. Would you consider to try a different type of needles or would you polish the slim end...

When I recently ordered a refurbish kit for my HS8 carbies I phoned Mark Gray about the applicable needle type. He recommended AAB. The istallation will take place once the days get warmer again. Meanwhile I'm wondering: What are the crucial dimensions of the needle? Is it the diameter at the...

At Mark Gray's I have ordered a CARB SERVICE KIT and needles after inquiring about the appropriate type. But please don't expect a speedy feedback as the car went into hibernation by now. Thanks for the direction. Vin