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Control pressure line, "Tecalan insert"

  • Racediagnostics
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18 Jun 2020 23:56 #250113 by Racediagnostics 450 SL 107.044 1979
Control pressure line, "Tecalan insert" was created by Racediagnostics
Regarding control pressure line 6b, doers anyone know what is meant by Tecalan Insert?

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Cheers
Jim

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19 Jun 2020 03:30 - 19 Jun 2020 03:47 #250114 by Rudiger 560 SL 107.048 1988 Americas (USA/CAN)
Replied by Rudiger on topic Control pressure line, "Tecalan insert"
Tecalan is a manufacturing company for air -pneumatic- and hydronic lines, tubing. Hoses.
www.tecalan.de/index.php/en/46-product-r...nd-hydraulic-systems

Inserts, I would call it also fitting.

To connect the “flex” tubing, pre bend tubing to the proper fitting, connector. DIN / AN - Army-Navy .
Rudiger
Last edit: 19 Jun 2020 03:47 by Rudiger.
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19 Jun 2020 06:51 #250118 by Moerten 300 SL 107.041 1988 Standard (Europa)
Replied by Moerten on topic Control pressure line, "Tecalan insert"

Gruß
Martin
_____________________________________
Lass mich, ich kann das... Oh, kaputt.

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19 Jun 2020 09:02 #250129 by Dr-DJet 450 SL 107.044 1973 Schweiz
Replied by Dr-DJet on topic Control pressure line, "Tecalan insert"
Hi Jim,

at first KA-Jetronic cars used to have a damper between fuel distributor and warm up regulator to dampen hydraulic noise. This was omitted when they introduced metal pipes with tecalan (=Polyamid) insert.

Viele Schraubergrüße - best regards, Volker alias Dr-DJet und K-Jet Forscher, Admin und Betreiber dieser Webseite
Alles über D-Jetronic und Zündung auf oldtimer.tips

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19 Jun 2020 10:35 #250144 by Racediagnostics 450 SL 107.044 1979
Replied by Racediagnostics on topic Control pressure line, "Tecalan insert"
Hi Volker, I plan to re-plate this and other parts with zinc and yellow passivate, do you have any experience of this and whether the pipe internal structure could be damaged by alkaline or acidic attack?

Google suggests that polyamide will be attacked by acid so will need to find a way to blank off the ends of the pipe.

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19 Jun 2020 10:41 #250145 by Dr-DJet 450 SL 107.044 1973 Schweiz
Replied by Dr-DJet on topic Control pressure line, "Tecalan insert"
Hi Jim,

you can see on your photo how the pipe is doubled up a few cm inches away from fitting. I have no experience whether this insert would suffer from heat and acid. As I wrote tecalan it is a PolyAmid version. I see heat more critical than acids.

Viele Schraubergrüße - best regards, Volker alias Dr-DJet und K-Jet Forscher, Admin und Betreiber dieser Webseite
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20 Jun 2020 14:54 #250258 by Racediagnostics 450 SL 107.044 1979
Replied by Racediagnostics on topic Control pressure line, "Tecalan insert"
OK, I found an easy solution to blank the ends of the pipe.

I will experiment on my spare system first.

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Pipes needing to be re-plated.

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Blanking plug made of brass on the lathe. M12 1.5mm thread, I did not have a die so tried single point screw cutting for the first time.

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That will prevent acid or alkali getting inside the tube.

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Jim

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20 Jun 2020 15:33 #250259 by Dr-DJet 450 SL 107.044 1973 Schweiz
Replied by Dr-DJet on topic Control pressure line, "Tecalan insert"
Hi Jim,

it is a good idea to close all of these pipes before replating. You will find ready made M12x1,5 plugs to close them.

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23 Jun 2020 21:45 #250562 by Racediagnostics 450 SL 107.044 1979
Replied by Racediagnostics on topic Control pressure line, "Tecalan insert"
This will be a long process to get all the parts cleaned and plated but will look good once complete. I have now made up a collection of end stops for all of the various threads and genders.

Cleaned with a "scotch" pad and de-greased.

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A bath in citric acid to remove the rust and old plating, with an immediate reaction.

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After a few hours, then cleaned up with a wire brush and scotch pad.

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Its condition now looks better than expected.

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I hope to get on to the plating tomorrow.

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Jim

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