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Offline theslayedsaint

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carb question
« on: February 28, 2015, 05:24:52 PM »
so I've been looking on line and saw a few people comment on it and i believe that when i pulled the carbs off months ago i didn't think the two lines coming off 2-3 carb goes anywhere is that correct or am i remembering it wrong? not my carbs ps
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1974 CB750 custom build cafe racer
-849cc big bore
-Webcam 63a
-APE rods
-4-1 stainless exhaust
-GSXR front end

Offline goldarrow

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Re: carb question
« Reply #1 on: February 28, 2015, 05:30:08 PM »
Those are breather holes
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Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0

Offline evanphi

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Re: carb question
« Reply #2 on: February 28, 2015, 06:36:24 PM »
They usually have a short black hose attached that just vents to above the airbox.

Hondaman's book suggests routing them into the bottom of the airbox through two small holes. I did that. We'll see how it turns out.
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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

Offline theslayedsaint

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Re: carb question
« Reply #3 on: February 28, 2015, 06:44:36 PM »
thanks! i love Hondamans book but damn its hard to find what i'm looking for in it sometimes.
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1974 CB750 custom build cafe racer
-849cc big bore
-Webcam 63a
-APE rods
-4-1 stainless exhaust
-GSXR front end

Offline evanphi

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  • Rhonda the Basket Case
Re: carb question
« Reply #4 on: March 01, 2015, 06:23:17 AM »
That is in the tuning section, I think, where he also talks about adding holes to the intake areas of the airbox.
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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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