Cylinder head temp gauge
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- Oil Stain
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Cylinder head temp gauge
Hi.
We are busy developing a affordable cylinder head temp gauge to be fitted under spark plug number 3.
This will tell you a lot of the state of tune of your engine. Overheating of a air cooled engine will often result in cylinder head damage to the valve seats, the so called "dropped seats"syndrome may buss drivers heard about or expierenced. This is a cheap way of saving your Kombi,Camper or Beefed up big bore motor.
We are busy developing a affordable cylinder head temp gauge to be fitted under spark plug number 3.
This will tell you a lot of the state of tune of your engine. Overheating of a air cooled engine will often result in cylinder head damage to the valve seats, the so called "dropped seats"syndrome may buss drivers heard about or expierenced. This is a cheap way of saving your Kombi,Camper or Beefed up big bore motor.
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- Oil Stain
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Re: Cylinder head temp gauge
Hi I also would like to have more details, cheapest gauge in that Deg c range is R750 what I could find.
This will have digital display and would cost way less than the gauge alone.
This will have digital display and would cost way less than the gauge alone.
- splitfan
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Re: Cylinder head temp gauge
Bought my gauges and senders from a aviation supplier in Kyalami business park , cant remember what they were called this was years back , they had both options for gauges digital or analogue
My biggest fear is that my wife sells my cars for what i told her they cost !!
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- Oil Stain
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Re: Cylinder head temp gauge
It is just two different metal wires crimped togethar on a washer which fits to the sparkplug and connected to a gauge.
No voltage or nothing required as it generates its own voltage to an analogue gauge
You also get electronic ones which is programable to a alarm etc
No voltage or nothing required as it generates its own voltage to an analogue gauge
You also get electronic ones which is programable to a alarm etc
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- Oil Stain
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Re: Cylinder head temp gauge
Yes you are correct about the working of it. I did some research yesterday the cheapest Gauge I can ind now with the required Temp range is now R1050 .This system will be calibrated and way cheaper , the aim is making it affordable to the People .
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- Oil Stain
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Re: Cylinder head temp gauge
Expanded the the display option to be able to connect 2 measuring points now for those with twin carbs . Only extra cost will be R110 for extra J tipe wire and fitting. Might have first ones ready for display at Kaapse Kombi Kult
- Tony Z
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Re: Cylinder head temp gauge
just remember that these dont really read the head temp, but the temp difference between the hot and cold junction. i.e. difference in temp between the head and the gauge.
So if your head temp is perfect on a warm day and the next day its 20deg cooler but your head temp is exactly the same, the gauge will read 20deg hotter, making you think it is possibly overheating and leading to plenty confusion as to why the car would overheat in the cold but run fine in the hot...
So you need to make it known that when you say its calibrated, that it is calibrated to a temp difference between the hot and cold junctions.
Or are you building a properly compensated unit which does self compensation before outputting to the gauge? Dakota digital offer these but their price is a little high
I'm not saying your idea is bad, I'm just adding info to the topic.
So if your head temp is perfect on a warm day and the next day its 20deg cooler but your head temp is exactly the same, the gauge will read 20deg hotter, making you think it is possibly overheating and leading to plenty confusion as to why the car would overheat in the cold but run fine in the hot...
So you need to make it known that when you say its calibrated, that it is calibrated to a temp difference between the hot and cold junctions.
Or are you building a properly compensated unit which does self compensation before outputting to the gauge? Dakota digital offer these but their price is a little high
I'm not saying your idea is bad, I'm just adding info to the topic.
ANGRRR
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- retrovan
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Re: Cylinder head temp gauge
There is a lot more then just reading a temp.
You need to have a multi sampler that can read temp at say 100 times per minute and then compensate for losses and ambient and then send out a average for the meter to display with buffing to stop the meter shuddering.
So now you can see why even the high tech manufacturers in mass production have expensive meters.
Be easier to have an 6 LED display which give you Green for under set temp. Orange for set temp, and red for over set temp.
Then you have two sets 3LED's per side, and these need to be under the head bolt, and not the spark plug as this is not a true reflection of an aircooled motor.
The correct temp reference for an air cooled motor is the oil. and not the heads.
OMO
Herman
You need to have a multi sampler that can read temp at say 100 times per minute and then compensate for losses and ambient and then send out a average for the meter to display with buffing to stop the meter shuddering.
So now you can see why even the high tech manufacturers in mass production have expensive meters.
Be easier to have an 6 LED display which give you Green for under set temp. Orange for set temp, and red for over set temp.
Then you have two sets 3LED's per side, and these need to be under the head bolt, and not the spark plug as this is not a true reflection of an aircooled motor.
The correct temp reference for an air cooled motor is the oil. and not the heads.
OMO
Herman
1952 Split Beetle 1835cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
- Tony Z
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Re: Cylinder head temp gauge
not entirely true Herman, your oil can be fine while you are melting the heads (lack of cooling, dirt in fins, too lean AFR...)
ANGRRR
http://www.aircooledvwsa.co.za/viewtopi ... 23&t=14775
1302S
http://www.aircooledvwsa.co.za/viewtopi ... 23&t=33521
Panel Van
http://www.aircooledvwsa.co.za/viewtopic.php?p=288723
http://www.aircooledvwsa.co.za/viewtopi ... 23&t=14775
1302S
http://www.aircooledvwsa.co.za/viewtopi ... 23&t=33521
Panel Van
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- splitfan
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Re: Cylinder head temp gauge
Agree with Tony , I used these on the big bore type4 motors as we all know they love to drop a valve seat if the heads get to hot
My biggest fear is that my wife sells my cars for what i told her they cost !!
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- Oil Stain
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Re: Cylinder head temp gauge
Hi Tony , Yes it will have ambient Temperature compensation. Which was part of design (German the cost is R5).
This will be calibrated in a oven up to 250 Deg C and the temp compensation junction will be outside and will also be heated up cooled down to make sure there is no influence on the CHT connection whilst keeping temp steady inside oven.
This will be calibrated in a oven up to 250 Deg C and the temp compensation junction will be outside and will also be heated up cooled down to make sure there is no influence on the CHT connection whilst keeping temp steady inside oven.