| [ Total Views: 457 | Total Replies: 1 | Thread Id: 13909 ] |
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 chappie
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| posted on September 30th, 2003 at 09:24 AM |
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DCNF's
Hi guys
Wonder if I could get some advice on DCNFs. ie - fitting twins to my 1835 and would like to know approximate jet sizes to start with and where to
purchase additional jets from. Any help would be greatly appreciated.
Cheers |
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whatnow
A.k.a.: Henry
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| posted on September 30th, 2003 at 12:15 PM |
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you prob need to give more info.
ie. what cam, valve sive, exhaust size, intended rpm etc.
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 Bizarre
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The artist formerly known as blue74l
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| posted on September 30th, 2003 at 12:16 PM |
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These are 2 sites woth reading on how to jet your carbs
http://www.redlineweber.com/html/Tech/Table_of_contents.htm
http://www.aircooled.net/gnrlsite/resource/articles.htm
I have scanned some pages on DNCF's but it is at work and i am away for 2 weeks. Try Helterskelter or Cray. I believe they both have the pages
As for jetting sizes
Idles - what ever the motor wants. 95% of cases it is a 50 - 55 idle. That said my IDF's want a 40  Read those articles and you will see that there is a sweet spot on the mixture screws. THIS ALONE determines
you idles
Mains should be 4.1ish X venturis size. If you have 32mm vents then a 130ish jet is a good starting point
Airs shoud be 50+ your mains.
So in my case it is 40 / 130 / 180. This is with a F11 Emulsion tube
Your vents are determined by your valve size. They say 3mm small than you inlet or say your exhaust valve.
28mm vents are too small for anything. A stock valved head (35/32) should have at least 32.
A big valved 40/35 should be at least 34 or 36
Where to buy?
Well dunno about Tas but most go fast shops sell jets. A company called Carburettor Service @ Burwood Sydney does mail order. Cant find the # at the
moment
[Edited on 30-9-2003 by blue74l]
Futue te ipsum!!!
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helterskelter400
Fahrvergnugen
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| posted on September 30th, 2003 at 05:55 PM |
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can email stuff at your request.
send me a proper email account as one is 44kb & the other is 2mb!!
:thumb
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