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Author Topic: 1978 CB750 carbs. PD42B to PD44A?  (Read 940 times)

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Offline JeremiahCB

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1978 CB750 carbs. PD42B to PD44A?
« on: December 18, 2014, 02:43:35 PM »
I am looking to purchase some carbs for my 750 and came across a set of carbs that seem to be off the same year bike with different jets.
Does anyone know if these will interchange with my carbs and even more important, how Will the bikes performance be affected by changes in Slow and Primary jets?
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Offline MiGhost

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Re: 1978 CB750 carbs. PD42B to PD44A?
« Reply #1 on: December 18, 2014, 04:12:11 PM »
To start off with. the PD44A are for the 750A. They are 26mm carbs comparable to the PD50/51 carbs on the 650. The PD42B are for the 750K/F. They are 28mm carbs. Totally different flow characteristics. The 44A carbs on the K/F will restrict power.
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~ Ghost

Grey Ghost '80 CB650C: Updated Stock Restomod. Period Custom Cruiser (OEM harbags & trunk, Wixom Ranger fairing, Jardine turnouts)
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Offline JeremiahCB

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Re: 1978 CB750 carbs. PD42B to PD44A?
« Reply #2 on: December 18, 2014, 11:00:10 PM »
Thanks MiGhost Exactly what I needed to know!
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Offline Mr Freeze

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Re: 1978 CB750 carbs. PD42B to PD44A?
« Reply #3 on: December 19, 2014, 09:53:07 AM »
Got some PD42B's for sale. Clean.

http://forums.sohc4.net/index.php?topic=143580.0
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