Carbs

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oldbikeman
Posts: 280
Joined: Sun Jul 25, 2010 3:32 pm

Carbs

Post by oldbikeman »

Hello
Does anyone know what the air cut off valves do ? What circuit are they on?
Cheers
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oldbikeman
Posts: 280
Joined: Sun Jul 25, 2010 3:32 pm

Re: Carbs

Post by oldbikeman »

I shall answer my own question in case any one else wants to Know .When you shut the throttle a high vacuum is created in the inlet.This is used to operate a valve that shuts off the air to the pilot jet circuit causing a richer mixture to prevent banging and popping on the over run.
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tony.mon
Posts: 16290
Joined: Wed Jul 25, 2007 10:46 pm
Location: Norf Kent

Re: Carbs

Post by tony.mon »

Name and shame that guilty valve!

I LIKE popping and banging on the overrun....... :biggrin
It's not falling off, it's an upgrade opportunity.
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seb421
Posts: 4840
Joined: Fri Mar 06, 2009 1:06 am
Location: Bolton Lancs

Re: Carbs

Post by seb421 »

tony.mon wrote:Name and shame that guilty valve!

I LIKE popping and banging on the overrun....... :biggrin
yep, ill second that mate!
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masterdave

Re: Carbs

Post by masterdave »

Is it possible to disable this?
id like much popping and banging!
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oldbikeman
Posts: 280
Joined: Sun Jul 25, 2010 3:32 pm

Re: Carbs

Post by oldbikeman »

It doesn't just stop noise it also stops the exhaust valves from burning.
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chris vtr virgin
Posts: 294
Joined: Wed Feb 23, 2011 8:23 pm
Location: dunfermline

Re: Carbs

Post by chris vtr virgin »

You canny beat the popping and banging the louder the better.
:thumbup: :thumbup:
Some twins have all the fun !!!!
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