Author Topic: 1977 CB400f jetting  (Read 511 times)

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Offline fenixv8

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1977 CB400f jetting
« on: August 06, 2014, 09:14:03 AM »
Hello, I just purchased a CB400f coming from a 1978 SR500.

The previous owner put pods on it and a generic header with a shorty exhaust. When I got it it had trouble starting off the line and couldn't rev up. 1/8 to 1/4 throttle was too leana nd 3/4 to WOT I believe is too rich.  I have since done Cam chain tensioner adjustment and Valves. and adjusted the pilot screw. Richened the low end and starts off the line better but I believe the 3/4 to WOT is even worse now which leads me to believe the main jet is too big. I have heard that PODS are a big pain in the ass so I am leaning towards putting the stock air box back on and I just ordered a Yoshimura exhaust.   Could anyone recommend me a good baseline set up for just all stock air box and just the Yoshimura exhaust.

Thank you,

Chris
« Last Edit: August 06, 2014, 11:14:37 AM by fenixv8 »

Offline fenixv8

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Re: 1977 CB400f jetting
« Reply #1 on: August 12, 2014, 07:24:14 AM »
Also where does the house off the plastic manifold lead to?