Keihin PWK 39 at 145 altitude

• Keihin PWK 39 at 145 altitude
  Posted by Frank on 20 Oct, 2012 00:51
• I want to buy a Keihin 39PWK in europe (cheaper shipping bill) for me!
  my question is anybody knows what the jetting spec is on c.k. 145 altitude?
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• #1 Reply
  Posted by Mitch Keller on 20 Oct, 2012 10:02
• Franks thank you for asking this, I am wanting to set up a spot in Tech Talk on Carburetor jetting asking members to post make of what quad, year, mods to engine, carburetor, size, what slide, what needle, clip location, pilot size, main jet size, air screw turns, with elevation and location, this would help out  so many members get into the "Ball Park" on jetting.
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• #2 Reply
  Posted by Rogue1970 on 20 Oct, 2012 11:08
• Yes, doing this again at least gives the other members a ballpark idea on what to shoot for.
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• #3 Reply
  Posted by Frank on 20 Oct, 2012 13:35
• i think the best way to find out our starting point to start the monster is that you know what is my altitude ?
  when engine is running
  you can start the finetuning for the mods that you have on your Quad.
  
  i have an oem mikuni 38  flatside  main jet is 360 and the pilot is 1,5  at altitude 145 m oversea
  this setup is maybe good running and start cold very well 1kick
  think the engine needs more air and fuel on the top rpm's
  keihin pwk is maybe the best and cheapest for powerfull ride anytime judt i need the setup for alt 145 m.
  Frank
  
  i have a little clip of mine how to start the zilla cold
  how can i add this ?
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• #4 Reply
  Posted by Gillio on 20 Oct, 2012 15:13
• Upload it to youtube
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• #5 Reply
  Posted by BadMoonRacing500 on 20 Oct, 2012 17:52
• Frank, what pipe and reeds? They will change your base jetting.
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• #6 Reply
  Posted by Frank on 20 Oct, 2012 23:24
• oh sorry
  i thought the man looks in the pics.
  bore : 87,50
  pipe : Paul Turner
  silencer : Fat Boy then a mod silencer Opel City 60 HP
  reeds: VForce 3
  carb: oem 38 Mikuni stock needle , on the second from above, 360 main, 1.5 pilot jet, air screw 2 out
  no porting
  altitude: 145 m oversea
  the idle dies after 30 seconds
  
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• #7 Reply
  Posted by Frank on 21 Oct, 2012 01:49
• <iframe width="420" height="315" src="http://www.youtube.com/embed/wgl1H2CnlD0" frameborder="0" allowfullscreen></iframe>
  
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• #8 Reply
  Posted by Hotbutta on 21 Oct, 2012 04:34
• Along with the Iron Cross, you guys must have iron soles in your sneakers. I can't do that on mine.  Also you are lucky to be  able to street ride.
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• #9 Reply
  Posted by Gillio on 21 Oct, 2012 07:39
• I would love to ride my 2-stroke on the steet, well legally I guess. lol
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• #10 Reply
  Posted by Frank on 21 Oct, 2012 08:15
• is not so cool , i can drive on the Autobahn , but nowere els where 
  can one tell me how can i jetting my keihin at alt 145 m ?
  
  
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• #11 Reply
  Posted by Dezsled on 21 Oct, 2012 09:07
• Here at sea level +/- 100' , 88 cyl &head stock
  39pwk , 185 main, 60 pilot, 6 slide, dgh needle, clip in the middle, 1.5 air screw,
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• #12 Reply
  Posted by El Diablo on 21 Oct, 2012 15:47
• Guys, 145 M is roughly 450 feet. Give or take a few feet.
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• #13 Reply
  Posted by Frank on 22 Oct, 2012 09:46
• thanks mutch el diablo 
  i think it's the same numbers of jets from Mik to Kei ?
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• #14 Reply
  Posted by El Diablo on 23 Oct, 2012 10:54
• Frank, the Mikuni & Kehin carburetors take different styles of jets with different numbers. We are collecting more information on carburetors & jetting and are posting this on a standard  format sheet found elswhere here in the forum. Hopefully someone here has a combination similar to yours that rides at or near the same altitude.   
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