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1
Garage / Re: Fuel Tank Sender Unit
« Last post by 4129R on Today at 07:22:41 AM »
I managed to take some measurements.

The sender is central to the tank, so 10.5" above the bottom.

The float bottoms out 7.5" below its centre, so when it is reading empty, there is still 3" of fuel in the tanks = 1/7th full.

If the full travel of the float is 12", the float will be 15" above the bottom, so it will still read full when you have used 6" of fuel = 2/7th.

Since the US/UK cannot agree about the size of a gallon, (or even the spelling of litre), the fuel tank capacity is supposed to be 57 litres.

So when it first reads empty, you will have 1/7th of 57 litres = say 8 litres left.

It will still read full even after you have used around 16 litres.

So I believe the gauge measures from 8 litres to 41 litres in its full travel so it measures only 33 litres from empty to full, so 1/4 full would be 8 + 8.25 = 16.25 litres, half full would be 8 + 8.25 + 8.25 = 24.5 litres, and 3/4 full would be 88 + 8.25 + 8.25 + 8.25 = 32.75 litres. 

E = 8 litres or less.
1/4 = 16.25 litres
1/2 = 24.5 litres
3/4 = 32.75 litres
F    =  41 litres or more.

(If the scaling of the gauge is accurate !!!)

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eBay - Craigslist Ads - Other Listings / '72 TC FS on eBay and Hemmings - very questionable "FACTORY" original?
« Last post by FourLoti on Today at 05:23:16 AM »
Beautiful paint and nice interior, but OK, where to start?  https://www.ebay.com/itm/266837955443

Stored in a climate controlled collection - with rusted suspension and front undertray connector plate?
17K miles - with half worn pedal pads?
Factory Original - except for missing secondary throttle body, crossover pipes, Catch Tank, Brake Boosters, and?
And apparently, the collector was so embarrassed his car is a L O T U S, he had someone fill in the holes in the back end.
OH, and how many of those silicon sealant worms around the valve cover have relatives on the inside?

Anyone here know this car?  Also listed on Hemmings.


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Garage / Re: Fuel Tank Sender Unit
« Last post by 4129R on Today at 05:23:03 AM »
Quote from: Dilkris on Today at 04:06:12 AM
Does this mean that when the fuel tank gauge reads "E" - you still have (for a TCS) 9"of fuel in each tank?

I have not measured where the float is at its lowest point. I will do that when I fit the new sender, after I either run the fuel level low, or drain the left tank.
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Garage / Re: Fuel Tank Sender Unit
« Last post by Dilkris on Today at 04:06:12 AM »
Does this mean that when the fuel tank gauge reads "E" - you still have (for a TCS) 9"of fuel in each tank?   
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Garage / Re: What are we missing, what should I make on a VMC?
« Last post by TurboFource on Today at 03:52:52 AM »
Good luck!
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Garage / Re: Fuel Tank Sender Unit
« Last post by 4129R on Today at 12:38:11 AM »
I have just measured the travel of the fuel tank sender unit.

Its full travel in 12", whereas the tank is 21" tall.

So for 9" of fuel level change, the sender unit will not register any movement.

That means it is only actually measuring 57% of the fuel movement, and for 43% of the time, it is not moving at all.

No wonder it stays full for a while, then empties quickly, then still has quite a lot of fuel left as the sender is not recording any movement.

I suppose that is what happens when you use a tall tank and a sender that describes only a small arc.
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Off Topic Subjects / Re: Bought a PU with less seat space than a Europa!
« Last post by Richard48Y on Saturday,June 01, 2024, 08:53:00 PM »
May have found out why it would not run?

I wonder if this might account for the low compression?  :holdurbreath:  :confused:
I put compressed air to two cylinders and really did not hear leakage.
Somewhere along the rebuild clear tape was put over the head ports.
It was not removed before the intake and exhaust were put on.
I will be doing another compression check once I put a few things back on the engine.

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Garage / Re: What are we missing, what should I make on a VMC?
« Last post by Richard48Y on Saturday,June 01, 2024, 08:03:39 PM »
Hard to believe, but the VMC purchase may be ON again!
Sold a Triumph GT6 project, way too cheap but I promised myself I was cutting back.
That funds buying the VMC but I still need to scratch up more funds to get it shipped.
Seller finally relented and will allow me to send my own trucker, that will be much less expensive.
If he had done that a week ago I would already have bought the VMC instead of the Morris Minor.
If this goes sideways again, I will be buying Lotus and MM parts.
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Garage / Re: Fuel Tank Sender Unit
« Last post by 4129R on Saturday,June 01, 2024, 10:20:46 AM »
Quote from: Dilkris on Saturday,June 01, 2024, 10:16:01 AM
Can't help with the question but my original sender (TCS) is out and readily accessible if you need dimensions or a any photo's.

Thanks, but I have 2 rusted ones as patterns.

I have ordered the Herald one on eBay. I will report if it is the same length and fitting.

They must have got it from some normal car. They did with nearly all the other parts.
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Garage / Re: Fuel Tank Sender Unit
« Last post by Dilkris on Saturday,June 01, 2024, 10:16:01 AM »
Can't help with the question but my original sender (TCS) is out and readily accessible if you need dimensions or a any photo's. 
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