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In the MG the needle sits in the middle of the gauge all the time so maybe 80C. I've never fitted a temperature gauge to a Renault 4 before so don't know how they normally behave but I think the Rodeo doesn't have quite enough cooling. I've been running with the heater on full to supplement...

I was hoping I fixed an overheating problem by fiddling with the gauge. But still got to 95C this afternoon.

Could check it if I owned a thermometer. Figured the important thing to know is when the water starts to boil.

Turns out you have to calibrate them. The bezel comes off with a lot of prying and force, then the needle pulls off with more force than you want to use. Just pop the needle back at the 100C mark while the sensor is boiling away in a kettle. Reassembly is possible by prying the bezel back...

That's a good call. The gauge over-reads by 20 degrees!

The 123 distributor is in. The distributor cap is a bit bigger than the original and the leads are tight against the dynamo. Looks like a 90 degree cap would work better. I've only done a rough tune so far and haven't connected vacuum advance, but already it is so much better than the...

The sensor installed in the water pump. The theads don't screw in all the way. I think it's some sort of plumbing thread that seals by itself with a taper. The temperature gauge needs power, ground and a wire to the sensor. The two thin wires are for lighting and I've left them...

Worth some notes about how to fit a cheap temperature gauge as there have been questions recently. I've got an overheating issue to diagnose and I'll need a temperature gauge for that. I thought about throwing a thermocouple into one of the hoses but gauges are cheap so decided to go that...

Are the early conrods white metalled and you need to know the standard size for machining the big end bearing? What's the engine type? 800-01 would be 845cc. 680 - xx would be 747cc. With the engine type someone with an old book ought to be able to find the spec.

I ended up cutting down the original sleeve. It's a risky thing to do as I think the length of the sleeve controls the end float on the distributor drive gear which should be around 0.15 to 0.5mm from memory. I measured a lot and found when the original sleeve was slipped onto the old...

That looks like an 845cc engine. You can buy adapters on ebay if the thread in the sensor is too small.

Thanks for the parts diagrams. I can see which parts I need now. Anyone have any spare?

I've found a photo of the later distributor mounting. I don't have the enlarged casting for the bolt hole on the top. I only have the bolt hole on the side. But the 123 distributor doesn't need to be rotated so I could pin it in place at TDC and clamp from the side hole. I think the...

Does anyone know anything about distributor types for early engines? I've bought a 123 distributor (above in photo) but the body is different from the distributor that came out of the engine (below). It'll fit if I remove the bush and seems to be designed for a clamp down fastening rather...

I have a similar problem on my Billancourt engine. My first step is fitting a temperature gauge to see what the temperature gets to before overheating. If it only gets to less than 100 degrees the system isn't pressurising. If it gets to maybe 105 or 110 degrees the system is pressurising...

A lot of us fit 145 80 13 tyres. There is a much better choice in that size.

I didn't realise there was supposed to be a fan cowl. Mine is missing. There is a photo in the manual so I can make one unless anyone has a spare.

I've been thinking a lot about the overheating. I've been having trouble setting the ignition timing so it works in all conditions. When I set it by the book it is way off and I think It's because the distributor advance no longer works as designed. I've been advancing the ignition a...

The expansion bottle was half full this morning and it was only that quantity of coolant that was lost. The system is bled. I turned the interior heater and fan on after the coolant light came on. That should have added some extra cooling and there was plenty of very hot air coming out of...

The Rodeo is great in the hot weather - lots of ventilation and a roof for shade. Unfortunately it overheats driving at a constant 80km/h. Yesterday the red cooling light came on but everything was fine. Today it was 28C and some water came out of the expansion bottle. Radiator is full...