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> Head Temp
hedfurst
post Feb 23 2018, 09:25 AM
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Rebuilding a track-car I haven't used for 10 years, it has 2 VDO head temp gauges and was set up for #s 1 and 3. I'd like to be able to watch all four.
Has anybody ever set any thing up for this before? I'd like a switch to change from 1 & 3 to 2 & 4?
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brant
post Feb 23 2018, 09:52 AM
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QUOTE(hedfurst @ Feb 23 2018, 08:25 AM) *

Rebuilding a track-car I haven't used for 10 years, it has 2 VDO head temp gauges and was set up for #s 1 and 3. I'd like to be able to watch all four.
Has anybody ever set any thing up for this before? I'd like a switch to change from 1 & 3 to 2 & 4?



a lot of people have done it
check the air craft suppliers for the gauges like that
spruce is one...


but you probably would be better off monitoring EGT on each cylinder than 4x- headtemps.....


the EGT is going to be more money but more useful
I think a single CHT on #3 is adequate if you know your mixture and your EGT

brant
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hedfurst
post Feb 23 2018, 10:39 AM
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QUOTE(brant @ Feb 23 2018, 07:52 AM) *

QUOTE(hedfurst @ Feb 23 2018, 08:25 AM) *

Rebuilding a track-car I haven't used for 10 years, it has 2 VDO head temp gauges and was set up for #s 1 and 3. I'd like to be able to watch all four.
Has anybody ever set any thing up for this before? I'd like a switch to change from 1 & 3 to 2 & 4?



a lot of people have done it
check the air craft suppliers for the gauges like that
spruce is one...


but you probably would be better off monitoring EGT on each cylinder than 4x- headtemps.....


the EGT is going to be more money but more useful
I think a single CHT on #3 is adequate if you know your mixture and your EGT

brant


Hey, appreciate it but what I was wondering was if there was a way to rig up a switch for an extra two sending units to use the gauges I have!
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jd74914
post Feb 23 2018, 01:43 PM
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QUOTE(hedfurst @ Feb 23 2018, 11:39 AM) *

Hey, appreciate it but what I was wondering was if there was a way to rig up a switch for an extra two sending units to use the gauges I have!

Just buy a thermocouple selector switch. (IMG:style_emoticons/default/smile.gif)

Cheap surplus one with 4 channels:
https://obtainsurplus.com/electrical/compon...917024jj17store
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