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Posted by: 914werke May 25 2019, 12:36 PM

So will the soldering of the lead cause or change the operating resistance ?
I will replace it but I need to get it going & over memorial day WE I aint gonna find one.

Posted by: Olympic 914 May 25 2019, 12:56 PM

Not an electrical engineer, but I think you will be safe. the range in ohms of the CHT is pretty large, like <99-3200 . so an added resistance of an ohm or two should NOT make much difference.

Posted by: worn May 25 2019, 03:41 PM

I think you will be ok if you are going copper to copper. The voltages from the thermocouples are in the microvolt range as I recall, so it doesn’t pay to add resistance.

Posted by: Bleyseng May 26 2019, 12:27 AM

I have a couple of spare cht’s

Posted by: barefoot May 26 2019, 05:01 AM

CHT ? CHT??
Are we talking about the one screwed in the head near #3 chamber, or we talking about one that screws under a spark plug.
the spark plug ones are thermocouples but I'm not sure if the #3chamber are TC's or a different thermistor device. Experts needed.

Posted by: Mark Henry May 26 2019, 09:59 AM

Crimp only.
I did this with the VDO on my bug because the plugs are 12mm, works perfectly...for a VDO.

Posted by: rjames May 26 2019, 11:20 AM