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Author Topic: Bench synching?  (Read 1476 times)

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Offline climbingaz

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Bench synching?
« on: September 14, 2009, 12:49:14 PM »
Okay, so I got my '78 750k carbs all cleaned up, ready to reinstall, but I'd like to do what "synching" I can while the carbs are still off the bike.

Can you give me a breif rundown on what I should be synching, adjusting before I put them back on the bike?
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Offline Johnie

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Re: Bench synching?
« Reply #1 on: September 14, 2009, 01:06:07 PM »
Quote from: climbingaz on September 14, 2009, 12:49:14 PM
Okay, so I got my '78 750k carbs all cleaned up, ready to reinstall, but I'd like to do what "synching" I can while the carbs are still off the bike.

Can you give me a breif rundown on what I should be synching, adjusting before I put them back on the bike?
Go to the FAQ section of this board. You will find a nice tutorial on the subject. That 78 will have a "slave" carb and I believe it is #2 as it was on my K7. You will sync the other 3 carbs to the #2. You are actually getting all the carb slides the same on all 4 carbs. That is a brief summary. The adjustment area is under the top cap of the carbs at the very top of the slide location. Let us know how it goes...
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1970 CB750K0 - Candy Ruby Red
1973 CB750K3 - Candy Bacchus Olive or Sunflake Orange
1970 Chevy Chevelle SS396 - Cortez Silver
1976 GL1000 Sulphur Yellow

Oshkosh, WI  USA

Offline new2novas

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Re: Bench synching?
« Reply #2 on: September 14, 2009, 03:39:27 PM »
i actually took a bit of time to get my bench sync real close, its good enough that i have been riding around like that for a while....i almost wish it hadn't have been so close, that way i would have to vac sync, but now i just keep sayin "i can do that next weekend"
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Offline torrinh

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Re: Bench synching?
« Reply #3 on: September 14, 2009, 03:49:23 PM »
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1978 Honda CB750K w/ 1976 CB750F1 motor
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Offline climbingaz

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Re: Bench synching?
« Reply #4 on: September 15, 2009, 10:38:19 AM »
Great info guys!  Seems simple enough...thanks!
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Offline bert96

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Re: Bench synching?
« Reply #5 on: September 16, 2009, 05:51:02 AM »


 Euhhhh.....could it be possible to know the samething but with carb from a cb700 nighthawk ??? ::) ;D

 I bought these carbs for my k4


Bert
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QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline climbingaz

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Re: Bench synching?
« Reply #6 on: September 16, 2009, 10:34:50 AM »
Could it be possible to know who that chick is in your avatar?!  ;D :o
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Offline bert96

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Re: Bench synching?
« Reply #7 on: September 16, 2009, 01:44:27 PM »


 I have a long list(and i'm on top) of members heres who would like to know too ;D ::)
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QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline fevah

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Re: Bench synching?
« Reply #8 on: September 16, 2009, 02:19:52 PM »
Quote from: torrinh on September 14, 2009, 03:49:23 PM
http://www.salocal.com/sohc/tech/carb/asmpg3/syncprep.htm

what i do, works pretty well

i read the one in the Carb FAQ and did that on my CB500. That one said a 1/8th drill bit gap. is that way too much cause my bike is misbehaving now.
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Offline new2novas

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Re: Bench synching?
« Reply #9 on: September 17, 2009, 08:16:09 AM »
the drill bit size really doesn't matter cause you need to back the idle screw down anyhow
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75 cb750F
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