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Author Topic: CB350F carb jetting question  (Read 3035 times)

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Offline CB For Me

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CB350F carb jetting question
« on: January 10, 2011, 04:45:27 AM »
Hi Guys

Long time reader, first time poster. Love this site!

I'm looking at changing to these http://www.knfilters.com/search/product.aspx?Prod=RC-0794 pod filters on my stock 350F and was hoping for some advice.

I know people have differing views on running pod filters but it's something I want to do, mainly because of the clean look.

Question is: what would be a good size main jet to try when re-jetting for the pods? I understand it may take trying out a few different sizes to get it perfect but i'm interested to know what people have found to be a good match i.e. a good place for me to start.

The bike is essentially stock (engine-wise) with what i believe is the original (though somewhat welded up) 4-4 exhaust.

Any advice would be greatly appreciated.

Cheers,

Doug.
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Offline CBDee

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Re: CB350F carb jetting question
« Reply #1 on: January 10, 2011, 05:28:20 AM »
Try posting your question on the SOHC4 forum. This forum is for how-to's, not technical questions.
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Offline CB For Me

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Re: CB350F carb jetting question
« Reply #2 on: January 10, 2011, 08:15:28 AM »
Ok, sorry.

edit: moved
« Last Edit: January 10, 2011, 08:41:32 AM by CB For Me »
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Offline flybox1

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Re: CB350F carb jetting question
« Reply #3 on: January 10, 2011, 09:02:39 AM »
your bike may look clean, but tuning will be a challenge.
Save all your stock airbox and carb components for a rainy day  ;)

85 mains will get you real close.
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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"Knowledge without mileage equals bullsh!t" - Henry Rollins

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Offline CB For Me

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Re: CB350F carb jetting question
« Reply #4 on: January 11, 2011, 12:59:49 AM »
Ok I'll give 85's a try and go from there.

Will definitely be keeping the stock setup at hand.

Thanks for the help.

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Offline flybox1

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Re: CB350F carb jetting question
« Reply #5 on: January 11, 2011, 07:18:07 AM »
might want to ask whomever you by your 85's from, if they can get 90's, and if they can take returns.  ;)
If a WOT plug chop shows you are still lean on 85's, you dont want to be messing with drilling out jets.
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline fletcha221

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Re: CB350F carb jetting question
« Reply #6 on: January 11, 2011, 10:44:42 AM »
FLYBOX! Long time Buddy!

I believe I ended up using 85's with my pods and the bike runs reat.
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"Consistency is the last refuge of the unimaginative" -Oscar Wilde

1973 CB350f
1975 CB550k
1975 CB750 K5

Offline jamesv220820

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Re: CB350F carb jetting question
« Reply #7 on: January 11, 2011, 10:51:24 AM »
depends on the elevation, like i did the pods (emgo ones, i like the look a better) and did the stock size of jets since the pod's let more air in and since i have less air up in denver it basically equalled it out to a tune-able range

hope that helps

- james mv
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There is nothing to fear but fear itself . . . and trying to restore a cb350f

Offline flybox1

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Re: CB350F carb jetting question
« Reply #8 on: January 11, 2011, 11:56:03 AM »
Quote from: fletcha221 on January 11, 2011, 10:44:42 AM
FLYBOX! Long time Buddy!

I believe I ended up using 85's with my pods and the bike runs reat.
Fletcha! Sup!?!?  8)
gonna have ride for the 'world tour'?
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline nk140

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Re: CB350F carb jetting question
« Reply #9 on: January 21, 2011, 12:12:37 PM »
Will the emgo pod filters fit on the 350f or will they be too long and hit the frame?  I hear the K&N will fit but they are a little pricey.
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