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Author Topic: Carb vent 'T's missing  (Read 511 times)

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Offline Johnny340

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Carb vent 'T's missing
« on: August 11, 2015, 10:24:39 AM »
'81 CB650 (new to me)
The vent tubes between carbs 1/2 and 3/4 have been previously removed for some reason and explains why I couldn't figure out where the vent tube from the airbox went.  See pic.  Are these connections required for proper running?  I'm cleaning the carbs now and wondered if I should split them and replace these connections. 
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1975 CB750F0 Super Sport
1972 CB750K2
1981 CB650
1974 T-500
2003 GSXR750
2006 YZ250

Offline evanphi

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Re: Carb vent 'T's missing
« Reply #1 on: August 12, 2015, 06:21:45 AM »
I'm no carb expert, but those tees were originally there, and attached to the vent tubes for a reason, likely for reducing turbulence.

I say put them on.
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--Evan

1975 CB750K "Rhonda"
Delkevic Stainless 4-1 Header, Cone Engineering 18" Quiet Core Reverse Cone, K&N Filter in Drilled Airbox
K5 Crankcase/Frame, K4 Head and Cylinders, K1 Carbs (42;120;1 Turn)

She's a mix-matched (former) basket case, but she's mine.

CB750 Shop Manual (all years), searchable text PDF
Calculating the correct input circumference for digital speedometers connected to the original speedometer drive
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