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Home > Beginners Tech > Downdraught weber for boost

carl talbot

326 Posts
Member #: 1323
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17th Feb, 2012 at 05:26:41pm

Can anyone suggest a downdraught weber for a low boosted [5-8psi] 1200cc motor

Are all weber carbs ok to use with low boost
or do they need seals , float chamber etc changing


Carlzilla

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3673 Posts
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Quarry Bonk

17th Feb, 2012 at 06:13:30pm

Everything needs to be sealed and pressurised float bowl under any sort of boost or it'll run lean, unless you use it suckthrough.

On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper

On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!!

17.213 @ 71mph, 64bhp n/a (Old Engine)

wil_h

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Betwix Harrogate and York

17th Feb, 2012 at 07:17:38pm

Isn't the R5 carb a down draught?

Even if it is though it has a bad reputation. Why do you want one over the HIF44?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.

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