Cylinder Head Temperature Gauge - Should I? & or Air Fuel Ratio

That's what he has (?) and they didn't help at all. If I just had those I would know my oil sat at 90 degs whatever I did and the oil pressure is higher cold. Then what?
I agree for stock, but Paul's odd ball would benefit from more monitoring.

Anyone overwhelmed by a couple of gauges should be in the passenger seat.

 

@zedders

any links to your 2cv dual senor CHT gauge please?

 

Yeah that is a bit pricy isn't it!

 

That looks good and great value. I can't find the wiring to go with it on their site

Any recommendations on what wiring i'd need? & where to get it from please?

 

The analogue gauges look so much better than digital. More in keeping with the vehicle. I, however, opted for digital displays, where I could, because they will be considerably easier to glance at to get an idea of what’s going on. Well (garishly) illuminated.

Then again, you are already familiar with 2 gauges. So can likely mostly ignore them. For me it is going to be like stepping in to one of those cockpit photos.

Just thought i’d give you one more thing to think about.


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J type thermocouple 14mm id for spark plug mount.. I doctored the heads on a type 4 (cut out the blue coloured bit) to take the ring type better and not get in the way of the plug.. don't know if this is required on a type 1


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I just checked and they don't list it now.
I paid £111. VW Jim lists same gauge for £200 with a 4 week lead time.

It's a joke, the gauges are probably £20 from China, you could make the senders for a tenner.

 

****But you hav'nt been trying to chase down overheating problems for the last four years....****

I only fitted the guages when I was having issues with the new engine that shouldn't be happening - oil light flashing at tickover , running very hot etc and the guages confirmed there was something wrong . Had the engine out recently made a few modifications - the guages proved the mods worked .
As you know , prior to that I did lots of hot forrin travelling on the old VEGE engine without guages and without issues .
The guages worked for me , easy to install , uncomplicated operation and gives you an basic idea of what's normal, you can keep all the lashed up multiple CHT & AFR gubbins, I'm really not interested ...

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Ditto.

 

I can possibly get this dual gauge for £40. But i have no idea what wires it needs to work or where i can get them from quickly.

Or i could get a Mainline sensor & gauge with wiring for £47 or two for £94

https://www.mainline-sensors.co.uk/...r-cht-5-meter-sensor-cable?variant=1127439593

No idea if 5m is long enough

 

Neither of you two have had your Cylinder heads overheating though, mine possibly have!

 

And, Paul has a bigger one than most (engine that is)

 

I’ve got a big one too...it’s too big really, to be efficient. Very effective though. Eye catching. Lots of thrust.

Engine that is!


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I've pulled over a few times when the oil temperature hit 125* on a long run in 20+ degrees ambient , that was hot enough - hot enough to thin out the oil and drop the pressure to flashing-oil-light-on-tickover territory. ***

As far as I'm concerned the whole lump was overheating so a CHT guage wouldn't tell me anything I didn't know already.
All you're looking for is some kind of base line to work from .

*** And before anyone tells me the light flashed so the bearings are bolloxed, the VDO sender flashes at around 10psi , the stock flashes at about 3 psi .

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Tempting.

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I find it far easier to glance at an analogue gauge to see the position of the needle rather than looking at a digital display and trying to remember what the number was last time I looked or even what is normal. I know that when the CHT needle goes beyond vertical I should back off a bit. Same for oil temp, although the gauge doesn’t match the sender I just know where the needle should point without looking at the numbers.

 

That's like judging how your stove is running by checking if the wallpaper is on fire across the room.

Anyway, this is for Paul's engine, not a stock engine. You are at a massive advantage - put stock carb on your stock engine, no air leaks you're done.

Me? I tried the recommended jetting for my carb/venturi once just to see and by the time I was doodling along at 50mph the head temps were the highest I've ever seen and I crawled home. The oil gauge hadn't moved, AFR was fine. Non stock engines.

 

I've never had my oil that hot, but still have issues with the heads....which may be overheating related

I'm just looking for something that may highlight potential issues with the heads. Something that may show me something has changed drastically from my 'norm'

Plus both @mikedjames and @zedders think it could be a good idea

 

I'd prefer a needle type gauge as it's more in keeping with the rest of the bus, but im struggling to find anything with a double gauge and all the 'wiring'.

 

Agreed , they are more stressed but UNTIL a reliable , accurate , calibrated and tested CHT guage is offered at a reasonable price i don`t see the point .
Anyone willing to build and fit one for Paul ?
The whole debate above seems to centre around different wiring giving different readings and i realise certain people have the skills to lash together something made from cheapo BBQ temperature sensors and it`ll give you a rough idea but surely the whole point of head temperatures is to be an accurate measurment , not a ballpark figure ??

As we both know , putting a stock carb on a stock engine is over simplyifying the problems i struggled with .