Author Topic: Oil Pump  (Read 517 times)

Offline cliff7

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Oil Pump
« on: July 10, 2020, 10:30:48 AM »
Excuse my ignorance but why has the CB400 have a double oil pump? I could understand if it was dry sump with separate oil tank like the 750 (scavenge pump and feed pump) but 400 is wet sump. Most cars are wet sump and have single pump.

Offline Nurse Julie

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Re: Oil Pump
« Reply #1 on: July 10, 2020, 10:47:15 AM »
Excuse my ignorance but why has the CB400 have a double oil pump? I could understand if it was dry sump with separate oil tank like the 750 (scavenge pump and feed pump) but 400 is wet sump. Most cars are wet sump and have single pump.
The small one feeds the gearbox.
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Online Laverda Dave

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Re: Oil Pump
« Reply #2 on: July 10, 2020, 10:48:06 AM »
One side of the pump looks after the engine whilst the other side looks after the gearbox. That's what I think the arrangement is anyway but happy to be corrected 👍.
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

Online Laverda Dave

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Re: Oil Pump
« Reply #3 on: July 10, 2020, 10:48:59 AM »
We both posted at the same time Julie👍
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

Offline cliff7

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Re: Oil Pump
« Reply #4 on: July 10, 2020, 12:29:59 PM »
Thanks. I knew it was something like that. Honest! One of the little O rings was displaced slightly due to lack of dowel. Hope gearbox is ok. :-[

 

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