26 April 2015

Lambretta 150D & LD Abarth Silencer

A word of caution: The packing material used in silencer's from this era was probably asbestos and is extremely hazardous. This also applies to brake linings and exhaust gaskets. The decision to do any work on these components must be made with this in mind.

Caustic Soda is extremely dangerous. Using it requires protective equipment and multiple safety considerations.


Abarth in their early years made sports silencers for Lambretta model D & LD's. This example was in poor condition and and at some stage it had been repaired using a header from a stock silencer.

The main thing required was a thorough de-coke. They were not made to be disassembled so the lower skin was removed (see caution above) and the silencer was submerged multiple times in a caustic soda solution to remove all traces of coking. Pipemasters, a motorcycle exhaust specialist (best known for their Honda CBX1000 pipes) sealed the bulkheads and re-skinned the lower half.


An Abarth silencer advertisement for the Piaggio Vespa from Moto Ciclismo (September 1954).

IGM (Ispettorato Generale Motorizzazione) stamp.

Manufacture date (?)

De-coke.

Coking removed from pipe.

Internal bulkheads, after cleaning, stock header.

Far left, at front - silencer for Lambretta D & LD.

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3 Comments:

Blogger Daniel Gasche said...

Great stuff!
I have one of these Abarth silencers on my Lambretta 150 D racer. Looks good, runs good and sounds good!
:)
see https://www.youtube.com/watch?v=kaVwv8S9iVo

March 1, 2016 at 2:45 AM  
Blogger Daniel Gasche said...

Dear blogger, i'd like to get in contact with you about the Lambretta thing. Please write to lambretta66@bluewin.ch
Thank you very much!
Dan

March 1, 2016 at 2:56 AM  
Blogger Oldtimerworkshop said...

Thanks Dan, email sent - talk soon!

March 1, 2016 at 11:18 PM  

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