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Author Topic: jet kits for 77/78 cb750's where???  (Read 3682 times)

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Offline GAsohc4

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jet kits for 77/78 cb750's where???
« on: November 02, 2009, 09:04:26 PM »
anyone on here know where to find a jet kit for 77-78 cb750's with the pumper carbs? - thanks
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Offline Peters1983

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Re: jet kits for 77/78 cb750's where???
« Reply #1 on: November 03, 2009, 01:11:32 AM »
there really aren't any "kits" per say you have to buy the jets individually and there is a bit of trial and error. I moved to 125's on a stock motor with pods and 4-2 exhaust and am a lot happier with performance but I think I could go a bit leaner( I still have a bit of tweaking to do with the needles). the later carbs take a little more work but can be worth the time if you take the effort to learn their faults. luckily I have a local mechanic that has built a lot of 750's and has enlightened me on a few things but research is going to be your best friend here.
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Offline dragracer

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Re: jet kits for 77/78 cb750's where???
« Reply #2 on: February 28, 2011, 02:18:44 PM »
Quote from: GAsohc4 on November 02, 2009, 09:04:26 PM
anyone on here know where to find a jet kit for 77-78 cb750's with the pumper carbs? - thanks

Did you ever find jet for your bike. I mainly need pilot jets. The ones for the 77-78 are push in versus screw ins for the earlier model bikes.
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Offline mick750F

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Re: jet kits for 77/78 cb750's where???
« Reply #3 on: February 28, 2011, 04:12:52 PM »

  You could try here... http://www.motorcyclecarbs.com/

Mike
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Offline Mandic

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Re: jet kits for 77/78 cb750's where???
« Reply #4 on: February 28, 2011, 04:16:10 PM »
I tried and tried, no one has new pilot jets for these carbs anymore.  Not sure anyone ever really did.  The consensus I found was most folks felt that even on crazier big bore motors the factory pilot jetting is sufficient. Needle and main jet adjustment is where you probably need to focus. 
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Offline luap

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Re: jet kits for 77/78 cb750's where???
« Reply #5 on: February 28, 2011, 04:21:27 PM »
siriusconinc.com they have alot of push in jets 44 bucks for 16 mains 110 115 120 an 125 an they will let you swap say 105 instead of the 125 or 130 instead of the 110. their up in canada so customs takes a little longer on shipping
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Offline Mandic

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Re: jet kits for 77/78 cb750's where???
« Reply #6 on: February 28, 2011, 04:29:44 PM »
Wow surprised I never found them before, I tried like heck to find new slow jets.  They have a handful between #30-#58.  Only #45 and #58 bigger than stock for my 750F but that is something.
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Offline dragracer

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Re: jet kits for 77/78 cb750's where???
« Reply #7 on: March 01, 2011, 01:40:52 PM »
Quote from: luap on February 28, 2011, 04:21:27 PM
siriusconinc.com they have alot of push in jets 44 bucks for 16 mains 110 115 120 an 125 an they will let you swap say 105 instead of the 125 or 130 instead of the 110. their up in canada so customs takes a little longer on shipping

Thanks for the link luap. I ordered mine last night and they shipped today. I got both 40 and 45's for the pilots since i'm unsure of how much fuel we'll need at idle. Couldn't get any plug color using the stock 35's. Running pod type filter and an open sidewinder.
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Offline thewudd

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Re: jet kits for 77/78 cb750's where???
« Reply #8 on: December 02, 2011, 12:23:34 PM »
what did you ever end up finding as the best combo?  i just bought pods and have a 4 into 2 exhaust which should be similar.

Matt
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Offline yozuri54

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Re: jet kits for 77/78 cb750's where???
« Reply #9 on: December 02, 2011, 04:46:51 PM »
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