Classic cars forum & vehicle restoration.
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Ray White
Joined: 02 Dec 2014
Posts: 6319
Location: Derby
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 Posted: Thu Nov 25, 2021 12:36 am Post subject: High Tech carb tuning. |
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While I am not anticipating everyone (or anyone) rushing to buy one of these gizmos I thought it might be worth posting it here to see what we think.
Fitted to the exhaust system, this seems to be a high tech way of keeping your carb in the 'optimum zone'.
(It's a long word that I can never remember!)
http://www.dtmpower.com/FuelMeter |
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peter scott
Joined: 18 Dec 2007
Posts: 7119
Location: Edinburgh
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| Posted: Thu Nov 25, 2021 11:11 am Post subject: |
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Nice that it does the interpretation of the results but a bit more expensive than the £10 one I bought at an auto jumble some years ago. It works quite well.
Peter
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http://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon |
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Ray White
Joined: 02 Dec 2014
Posts: 6319
Location: Derby
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| Posted: Thu Nov 25, 2021 1:42 pm Post subject: |
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| How does that work, Peter? |
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MikeEdwards
Joined: 25 May 2011
Posts: 2472
Location: South Cheshire
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| Posted: Thu Nov 25, 2021 2:03 pm Post subject: |
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| peter scott wrote: | Nice that it does the interpretation of the results but a bit more expensive than the £10 one I bought at an auto jumble some years ago. It works quite well.
Peter |
Oh, that's interesting, looks as if yours is very similar to mine, a £3 car boot sale purchase a few years back. A mate has one the same as mine that I keep meaning to try back-to-back with mine to get an idea of whether mine is reading correctly. When I tested my car on his, it matched the reading at the subsequent MOT test, but that was before I'd acquired this one.
Certainly seem to be better than the various Gunsons gastesters that I have - I've always had trouble doing the first calibration run on them.
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1976 Vauxhall HP Firenza, 1976 Vauxhall Sportshatch (x2), 1986 Audi coupe quattro, 2000 Audi TT |
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peter scott
Joined: 18 Dec 2007
Posts: 7119
Location: Edinburgh
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| Posted: Thu Nov 25, 2021 2:15 pm Post subject: |
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| Ray White wrote: | | How does that work, Peter? |
Ray, It's a few years since I used it and I don't think I ever fully understood what all the bits did but operation simply involved clipping the sensor up the exhaust pipe and reading the CO % off the scale. The photo is not my actual unit but is the same as mine. I took the photo from this thread that goes into more detail. https://www.pistonheads.com/gassing/topic.asp?h=0&f=220&t=1572013
You got a real bargain Mike. 
Peter
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http://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon |
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MikeEdwards
Joined: 25 May 2011
Posts: 2472
Location: South Cheshire
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| Posted: Thu Nov 25, 2021 2:29 pm Post subject: |
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^ I thought so too, Peter. The seller started at a fiver, which I thought was pushing it a bit given that it might not have worked at all. Seller didn't actually know what it was, which usually helps.
As far as using it, it's just a case of connecting it to a suitable power source and sticking the probe in the exhaust and waiting for the reading to settle down, I think.
The two windows are containers for filters which I presume need changing from time to time.
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1976 Vauxhall HP Firenza, 1976 Vauxhall Sportshatch (x2), 1986 Audi coupe quattro, 2000 Audi TT |
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Ray White
Joined: 02 Dec 2014
Posts: 6319
Location: Derby
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| Posted: Thu Nov 25, 2021 2:30 pm Post subject: |
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This is my one.
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Bitumen Boy
Joined: 26 Jan 2012
Posts: 1735
Location: Above the snow line in old Monmouthshire
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| Posted: Thu Nov 25, 2021 3:31 pm Post subject: Re: High Tech carb tuning. |
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| Ray White wrote: | While I am not anticipating everyone (or anyone) rushing to buy one of these gizmos I thought it might be worth posting it here to see what we think.
Fitted to the exhaust system, this seems to be a high tech way of keeping your carb in the 'optimum zone'.
(It's a long word that I can never remember!)
http://www.dtmpower.com/FuelMeter |
I've seen that somewhere before, been around a few years I think. |
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Ray White
Joined: 02 Dec 2014
Posts: 6319
Location: Derby
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| Posted: Thu Nov 25, 2021 4:28 pm Post subject: |
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| The long word I couldn't remember is stoichiometry |
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