Xtreme Kermit
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| posted on 19/1/12 at 07:50 PM |
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Why use 'Split' webers?
So carrying on the weber based discussion from the other day, why do people use 'split' webers?
I mean using two dcoe webers with one choke blocked off in each?
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britishtrident
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| posted on 19/1/12 at 07:55 PM |
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Siamesed inlet ports on A series heads heads particularly in BMc Minis, because a single Weber Dcoe didn't line up with the ports the
resultant S bend it badly affect the gas flow and the mixture distribution between the two cylinders sharing the port.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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paul Irvine
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| posted on 19/1/12 at 07:57 PM |
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The main reason to use split webers is on an "A" series engine, they only have two inlet ports, if you use one choke on each carb you end
up with a straight inlet tract and better air flow.
Paul
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Xtreme Kermit
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| posted on 19/1/12 at 08:12 PM |
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Ah - I get it! It's the angle of the dangle that causes the requirement 
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contaminated
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| posted on 19/1/12 at 08:58 PM |
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quote:
Originally posted by Xtreme Kermit
Ah - I get it! It's the angle of the dangle that causes the requirement
Yup
Read a bit of David Vizard. Split webbers give you a straight line in the inlet and it stops the outer cylinders running lean in comparison to the
inner 2 on an A series.
Tiger Super Six Independent
www.southernkitcars.com
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dhutch
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| posted on 20/1/12 at 11:44 AM |
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quote:
Originally posted by paul Irvine
The main reason to use split webers is on an "A" series engine, they only have two inlet ports, if you use one choke on each carb you end
up with a straight inlet tract and better air flow.
Strange, but it appears, true!
http://books.google.co.uk/books?id=oqqhmgbXZkoC&pg=PA96&lpg=PA96&dq=split+webers&source=bl&ots=4GpabJNCe_&sig=mpQJGJyOlGVV1g1Z
BHajDkAW0VU&hl=en&sa=X&ei=CVMZT52RC5DHswaK9thI&ved=0CFEQ6AEwBg#v=onepage&q=split%20webers&f=false
http://www.google.co.uk/search?hl=en&safe=active&q=split+webers&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1308&bih=486&wrapid=tlif1327
05973770610&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=CVMZT52RC5DHswaK9thI
I guess it was a case of using what was available.
Daniel
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dhutch
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| posted on 20/1/12 at 11:45 AM |
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Second link is to a page of images, copy and paste whole link to get it to work!
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Xtreme Kermit
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| posted on 20/1/12 at 01:11 PM |
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well there you go - who'd have thought.
Thanks all - the collective does it again
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Marcus
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| posted on 21/1/12 at 03:04 PM |
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The other use was road rallying where you were only allowed to run 2 chokes. Was popular on Pintos and crossflows back in the day.
Marcus
Because kits are for girls!!
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