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whizzbang
 Post subject: HS2 overflow
PostPosted: Wed Nov 27, 2024 10:57 pm 
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848cc
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Is it possible to fit an overflow pipe to an AUD146 HS2. If so how, please?
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timmy201
 Post subject: Re: HS2 overflow
PostPosted: Thu Nov 28, 2024 5:12 am 
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1275cc
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Joined: Sun Apr 29, 2012 1:19 pm
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Location: Wollongong, NSW
You’ll need a different lid with an overflow port / breather vent

Eg
https://www.barnfindspareparts.com.au/s ... ud9203~852
https://www.barnfindspareparts.com.au/s ... id-aud9210

This is the standard type with the pin hole
https://www.barnfindspareparts.com.au/s ... id-aud9203

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Bill B
 Post subject: Re: HS2 overflow
PostPosted: Thu Nov 28, 2024 1:17 pm 
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1275cc
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Joined: Sat Feb 09, 2013 5:44 pm
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Location: Camden
timmy201 wrote:
You’ll need a different lid with an overflow port / breather vent

Eg
https://www.barnfindspareparts.com.au/s ... ud9203~852
https://www.barnfindspareparts.com.au/s ... id-aud9210

This is the standard type with the pin hole
https://www.barnfindspareparts.com.au/s ... id-aud9203


Quick question: On the Barnfind lid, (AUD9210) is the 2nd brass vent for supplying the other carburettor in a twin set-up rather than an overflow?
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timmy201
 Post subject: Re: HS2 overflow
PostPosted: Thu Nov 28, 2024 3:13 pm 
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Location: Wollongong, NSW
I couldn’t tell from the photo Bill. There seem to be many different versions, some with the second port at 90 degrees to the inlet, some at 180 degrees and the same applies to the overflow port.

Some have an inlet, second carb port and also the vent

https://sucarb.co.uk/float-chambers-spa ... -lids.html


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Hinesy1275
 Post subject: Re: HS2 overflow
PostPosted: Fri Nov 29, 2024 7:39 am 
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Generally the 9210 secondary pipe was an overflow - application to MGB etc
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whizzbang
 Post subject: Re: HS2 overflow
PostPosted: Fri Nov 29, 2024 7:09 pm 
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848cc
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Joined: Tue Oct 10, 2023 5:48 pm
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My AUD146's have the small vent under the metal clip. Can this be drilled out and a small pipe fitted?
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timmy201
 Post subject: Re: HS2 overflow
PostPosted: Fri Nov 29, 2024 7:21 pm 
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It’s probably possible, but it’d get very close to the fuel inlet rubber hose.

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